1 /* Subroutines for insn-output.c for HPPA.
2 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
3 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
4 Contributed by Tim Moore (moore@cs.utah.edu), based on sparc.c
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GCC is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING. If not, write to
20 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
25 #include "coretypes.h"
29 #include "hard-reg-set.h"
31 #include "insn-config.h"
32 #include "conditions.h"
33 #include "insn-attr.h"
41 #include "integrate.h"
49 #include "target-def.h"
51 /* Return nonzero if there is a bypass for the output of
52 OUT_INSN and the fp store IN_INSN. */
54 hppa_fpstore_bypass_p (rtx out_insn, rtx in_insn)
56 enum machine_mode store_mode;
57 enum machine_mode other_mode;
60 if (recog_memoized (in_insn) < 0
61 || get_attr_type (in_insn) != TYPE_FPSTORE
62 || recog_memoized (out_insn) < 0)
65 store_mode = GET_MODE (SET_SRC (PATTERN (in_insn)));
67 set = single_set (out_insn);
71 other_mode = GET_MODE (SET_SRC (set));
73 return (GET_MODE_SIZE (store_mode) == GET_MODE_SIZE (other_mode));
77 #ifndef DO_FRAME_NOTES
78 #ifdef INCOMING_RETURN_ADDR_RTX
79 #define DO_FRAME_NOTES 1
81 #define DO_FRAME_NOTES 0
85 static void copy_reg_pointer (rtx, rtx);
86 static void fix_range (const char *);
87 static bool pa_handle_option (size_t, const char *, int);
88 static int hppa_address_cost (rtx);
89 static bool hppa_rtx_costs (rtx, int, int, int *);
90 static inline rtx force_mode (enum machine_mode, rtx);
91 static void pa_reorg (void);
92 static void pa_combine_instructions (void);
93 static int pa_can_combine_p (rtx, rtx, rtx, int, rtx, rtx, rtx);
94 static int forward_branch_p (rtx);
95 static void compute_zdepwi_operands (unsigned HOST_WIDE_INT, unsigned *);
96 static int compute_movmem_length (rtx);
97 static int compute_clrmem_length (rtx);
98 static bool pa_assemble_integer (rtx, unsigned int, int);
99 static void remove_useless_addtr_insns (int);
100 static void store_reg (int, HOST_WIDE_INT, int);
101 static void store_reg_modify (int, int, HOST_WIDE_INT);
102 static void load_reg (int, HOST_WIDE_INT, int);
103 static void set_reg_plus_d (int, int, HOST_WIDE_INT, int);
104 static void pa_output_function_prologue (FILE *, HOST_WIDE_INT);
105 static void update_total_code_bytes (int);
106 static void pa_output_function_epilogue (FILE *, HOST_WIDE_INT);
107 static int pa_adjust_cost (rtx, rtx, rtx, int);
108 static int pa_adjust_priority (rtx, int);
109 static int pa_issue_rate (void);
110 static void pa_select_section (tree, int, unsigned HOST_WIDE_INT)
112 static void pa_encode_section_info (tree, rtx, int);
113 static const char *pa_strip_name_encoding (const char *);
114 static bool pa_function_ok_for_sibcall (tree, tree);
115 static void pa_globalize_label (FILE *, const char *)
117 static void pa_asm_output_mi_thunk (FILE *, tree, HOST_WIDE_INT,
118 HOST_WIDE_INT, tree);
119 #if !defined(USE_COLLECT2)
120 static void pa_asm_out_constructor (rtx, int);
121 static void pa_asm_out_destructor (rtx, int);
123 static void pa_init_builtins (void);
124 static rtx hppa_builtin_saveregs (void);
125 static tree hppa_gimplify_va_arg_expr (tree, tree, tree *, tree *);
126 static bool pa_scalar_mode_supported_p (enum machine_mode);
127 static bool pa_commutative_p (rtx x, int outer_code);
128 static void copy_fp_args (rtx) ATTRIBUTE_UNUSED;
129 static int length_fp_args (rtx) ATTRIBUTE_UNUSED;
130 static struct deferred_plabel *get_plabel (rtx) ATTRIBUTE_UNUSED;
131 static inline void pa_file_start_level (void) ATTRIBUTE_UNUSED;
132 static inline void pa_file_start_space (int) ATTRIBUTE_UNUSED;
133 static inline void pa_file_start_file (int) ATTRIBUTE_UNUSED;
134 static inline void pa_file_start_mcount (const char*) ATTRIBUTE_UNUSED;
135 static void pa_elf_file_start (void) ATTRIBUTE_UNUSED;
136 static void pa_som_file_start (void) ATTRIBUTE_UNUSED;
137 static void pa_linux_file_start (void) ATTRIBUTE_UNUSED;
138 static void pa_hpux64_gas_file_start (void) ATTRIBUTE_UNUSED;
139 static void pa_hpux64_hpas_file_start (void) ATTRIBUTE_UNUSED;
140 static void output_deferred_plabels (void);
141 #ifdef ASM_OUTPUT_EXTERNAL_REAL
142 static void pa_hpux_file_end (void);
144 #ifdef HPUX_LONG_DOUBLE_LIBRARY
145 static void pa_hpux_init_libfuncs (void);
147 static rtx pa_struct_value_rtx (tree, int);
148 static bool pa_pass_by_reference (CUMULATIVE_ARGS *, enum machine_mode,
150 static int pa_arg_partial_bytes (CUMULATIVE_ARGS *, enum machine_mode,
152 static struct machine_function * pa_init_machine_status (void);
155 /* Save the operands last given to a compare for use when we
156 generate a scc or bcc insn. */
157 rtx hppa_compare_op0, hppa_compare_op1;
158 enum cmp_type hppa_branch_type;
160 /* Which cpu we are scheduling for. */
161 enum processor_type pa_cpu = TARGET_SCHED_DEFAULT;
163 /* The UNIX standard to use for predefines and linking. */
164 int flag_pa_unix = TARGET_HPUX_11_11 ? 1998 : TARGET_HPUX_10_10 ? 1995 : 1993;
166 /* Counts for the number of callee-saved general and floating point
167 registers which were saved by the current function's prologue. */
168 static int gr_saved, fr_saved;
170 static rtx find_addr_reg (rtx);
172 /* Keep track of the number of bytes we have output in the CODE subspace
173 during this compilation so we'll know when to emit inline long-calls. */
174 unsigned long total_code_bytes;
176 /* The last address of the previous function plus the number of bytes in
177 associated thunks that have been output. This is used to determine if
178 a thunk can use an IA-relative branch to reach its target function. */
179 static int last_address;
181 /* Variables to handle plabels that we discover are necessary at assembly
182 output time. They are output after the current function. */
183 struct deferred_plabel GTY(())
188 static GTY((length ("n_deferred_plabels"))) struct deferred_plabel *
190 static size_t n_deferred_plabels = 0;
193 /* Initialize the GCC target structure. */
195 #undef TARGET_ASM_ALIGNED_HI_OP
196 #define TARGET_ASM_ALIGNED_HI_OP "\t.half\t"
197 #undef TARGET_ASM_ALIGNED_SI_OP
198 #define TARGET_ASM_ALIGNED_SI_OP "\t.word\t"
199 #undef TARGET_ASM_ALIGNED_DI_OP
200 #define TARGET_ASM_ALIGNED_DI_OP "\t.dword\t"
201 #undef TARGET_ASM_UNALIGNED_HI_OP
202 #define TARGET_ASM_UNALIGNED_HI_OP TARGET_ASM_ALIGNED_HI_OP
203 #undef TARGET_ASM_UNALIGNED_SI_OP
204 #define TARGET_ASM_UNALIGNED_SI_OP TARGET_ASM_ALIGNED_SI_OP
205 #undef TARGET_ASM_UNALIGNED_DI_OP
206 #define TARGET_ASM_UNALIGNED_DI_OP TARGET_ASM_ALIGNED_DI_OP
207 #undef TARGET_ASM_INTEGER
208 #define TARGET_ASM_INTEGER pa_assemble_integer
210 #undef TARGET_ASM_FUNCTION_PROLOGUE
211 #define TARGET_ASM_FUNCTION_PROLOGUE pa_output_function_prologue
212 #undef TARGET_ASM_FUNCTION_EPILOGUE
213 #define TARGET_ASM_FUNCTION_EPILOGUE pa_output_function_epilogue
215 #undef TARGET_SCHED_ADJUST_COST
216 #define TARGET_SCHED_ADJUST_COST pa_adjust_cost
217 #undef TARGET_SCHED_ADJUST_PRIORITY
218 #define TARGET_SCHED_ADJUST_PRIORITY pa_adjust_priority
219 #undef TARGET_SCHED_ISSUE_RATE
220 #define TARGET_SCHED_ISSUE_RATE pa_issue_rate
222 #undef TARGET_ENCODE_SECTION_INFO
223 #define TARGET_ENCODE_SECTION_INFO pa_encode_section_info
224 #undef TARGET_STRIP_NAME_ENCODING
225 #define TARGET_STRIP_NAME_ENCODING pa_strip_name_encoding
227 #undef TARGET_FUNCTION_OK_FOR_SIBCALL
228 #define TARGET_FUNCTION_OK_FOR_SIBCALL pa_function_ok_for_sibcall
230 #undef TARGET_COMMUTATIVE_P
231 #define TARGET_COMMUTATIVE_P pa_commutative_p
233 #undef TARGET_ASM_OUTPUT_MI_THUNK
234 #define TARGET_ASM_OUTPUT_MI_THUNK pa_asm_output_mi_thunk
235 #undef TARGET_ASM_CAN_OUTPUT_MI_THUNK
236 #define TARGET_ASM_CAN_OUTPUT_MI_THUNK default_can_output_mi_thunk_no_vcall
238 #undef TARGET_ASM_FILE_END
239 #ifdef ASM_OUTPUT_EXTERNAL_REAL
240 #define TARGET_ASM_FILE_END pa_hpux_file_end
242 #define TARGET_ASM_FILE_END output_deferred_plabels
245 #if !defined(USE_COLLECT2)
246 #undef TARGET_ASM_CONSTRUCTOR
247 #define TARGET_ASM_CONSTRUCTOR pa_asm_out_constructor
248 #undef TARGET_ASM_DESTRUCTOR
249 #define TARGET_ASM_DESTRUCTOR pa_asm_out_destructor
252 #undef TARGET_DEFAULT_TARGET_FLAGS
253 #define TARGET_DEFAULT_TARGET_FLAGS (TARGET_DEFAULT | TARGET_CPU_DEFAULT)
254 #undef TARGET_HANDLE_OPTION
255 #define TARGET_HANDLE_OPTION pa_handle_option
257 #undef TARGET_INIT_BUILTINS
258 #define TARGET_INIT_BUILTINS pa_init_builtins
260 #undef TARGET_RTX_COSTS
261 #define TARGET_RTX_COSTS hppa_rtx_costs
262 #undef TARGET_ADDRESS_COST
263 #define TARGET_ADDRESS_COST hppa_address_cost
265 #undef TARGET_MACHINE_DEPENDENT_REORG
266 #define TARGET_MACHINE_DEPENDENT_REORG pa_reorg
268 #ifdef HPUX_LONG_DOUBLE_LIBRARY
269 #undef TARGET_INIT_LIBFUNCS
270 #define TARGET_INIT_LIBFUNCS pa_hpux_init_libfuncs
273 #undef TARGET_PROMOTE_FUNCTION_RETURN
274 #define TARGET_PROMOTE_FUNCTION_RETURN hook_bool_tree_true
275 #undef TARGET_PROMOTE_PROTOTYPES
276 #define TARGET_PROMOTE_PROTOTYPES hook_bool_tree_true
278 #undef TARGET_STRUCT_VALUE_RTX
279 #define TARGET_STRUCT_VALUE_RTX pa_struct_value_rtx
280 #undef TARGET_RETURN_IN_MEMORY
281 #define TARGET_RETURN_IN_MEMORY pa_return_in_memory
282 #undef TARGET_MUST_PASS_IN_STACK
283 #define TARGET_MUST_PASS_IN_STACK must_pass_in_stack_var_size
284 #undef TARGET_PASS_BY_REFERENCE
285 #define TARGET_PASS_BY_REFERENCE pa_pass_by_reference
286 #undef TARGET_CALLEE_COPIES
287 #define TARGET_CALLEE_COPIES hook_bool_CUMULATIVE_ARGS_mode_tree_bool_true
288 #undef TARGET_ARG_PARTIAL_BYTES
289 #define TARGET_ARG_PARTIAL_BYTES pa_arg_partial_bytes
291 #undef TARGET_EXPAND_BUILTIN_SAVEREGS
292 #define TARGET_EXPAND_BUILTIN_SAVEREGS hppa_builtin_saveregs
293 #undef TARGET_GIMPLIFY_VA_ARG_EXPR
294 #define TARGET_GIMPLIFY_VA_ARG_EXPR hppa_gimplify_va_arg_expr
296 #undef TARGET_SCALAR_MODE_SUPPORTED_P
297 #define TARGET_SCALAR_MODE_SUPPORTED_P pa_scalar_mode_supported_p
299 #undef TARGET_CANNOT_FORCE_CONST_MEM
300 #define TARGET_CANNOT_FORCE_CONST_MEM pa_tls_referenced_p
302 struct gcc_target targetm = TARGET_INITIALIZER;
304 /* Parse the -mfixed-range= option string. */
307 fix_range (const char *const_str)
310 char *str, *dash, *comma;
312 /* str must be of the form REG1'-'REG2{,REG1'-'REG} where REG1 and
313 REG2 are either register names or register numbers. The effect
314 of this option is to mark the registers in the range from REG1 to
315 REG2 as ``fixed'' so they won't be used by the compiler. This is
316 used, e.g., to ensure that kernel mode code doesn't use fr4-fr31. */
318 i = strlen (const_str);
319 str = (char *) alloca (i + 1);
320 memcpy (str, const_str, i + 1);
324 dash = strchr (str, '-');
327 warning (0, "value of -mfixed-range must have form REG1-REG2");
332 comma = strchr (dash + 1, ',');
336 first = decode_reg_name (str);
339 warning (0, "unknown register name: %s", str);
343 last = decode_reg_name (dash + 1);
346 warning (0, "unknown register name: %s", dash + 1);
354 warning (0, "%s-%s is an empty range", str, dash + 1);
358 for (i = first; i <= last; ++i)
359 fixed_regs[i] = call_used_regs[i] = 1;
368 /* Check if all floating point registers have been fixed. */
369 for (i = FP_REG_FIRST; i <= FP_REG_LAST; i++)
374 target_flags |= MASK_DISABLE_FPREGS;
377 /* Implement TARGET_HANDLE_OPTION. */
380 pa_handle_option (size_t code, const char *arg, int value ATTRIBUTE_UNUSED)
385 case OPT_mpa_risc_1_0:
387 target_flags &= ~(MASK_PA_11 | MASK_PA_20);
391 case OPT_mpa_risc_1_1:
393 target_flags &= ~MASK_PA_20;
394 target_flags |= MASK_PA_11;
397 case OPT_mpa_risc_2_0:
399 target_flags |= MASK_PA_11 | MASK_PA_20;
403 if (strcmp (arg, "8000") == 0)
404 pa_cpu = PROCESSOR_8000;
405 else if (strcmp (arg, "7100") == 0)
406 pa_cpu = PROCESSOR_7100;
407 else if (strcmp (arg, "700") == 0)
408 pa_cpu = PROCESSOR_700;
409 else if (strcmp (arg, "7100LC") == 0)
410 pa_cpu = PROCESSOR_7100LC;
411 else if (strcmp (arg, "7200") == 0)
412 pa_cpu = PROCESSOR_7200;
413 else if (strcmp (arg, "7300") == 0)
414 pa_cpu = PROCESSOR_7300;
419 case OPT_mfixed_range_:
429 #if TARGET_HPUX_10_10
435 #if TARGET_HPUX_11_11
447 override_options (void)
449 /* Unconditional branches in the delay slot are not compatible with dwarf2
450 call frame information. There is no benefit in using this optimization
451 on PA8000 and later processors. */
452 if (pa_cpu >= PROCESSOR_8000
453 || (! USING_SJLJ_EXCEPTIONS && flag_exceptions)
454 || flag_unwind_tables)
455 target_flags &= ~MASK_JUMP_IN_DELAY;
457 if (flag_pic && TARGET_PORTABLE_RUNTIME)
459 warning (0, "PIC code generation is not supported in the portable runtime model");
462 if (flag_pic && TARGET_FAST_INDIRECT_CALLS)
464 warning (0, "PIC code generation is not compatible with fast indirect calls");
467 if (! TARGET_GAS && write_symbols != NO_DEBUG)
469 warning (0, "-g is only supported when using GAS on this processor,");
470 warning (0, "-g option disabled");
471 write_symbols = NO_DEBUG;
474 /* We only support the "big PIC" model now. And we always generate PIC
475 code when in 64bit mode. */
476 if (flag_pic == 1 || TARGET_64BIT)
479 /* We can't guarantee that .dword is available for 32-bit targets. */
480 if (UNITS_PER_WORD == 4)
481 targetm.asm_out.aligned_op.di = NULL;
483 /* The unaligned ops are only available when using GAS. */
486 targetm.asm_out.unaligned_op.hi = NULL;
487 targetm.asm_out.unaligned_op.si = NULL;
488 targetm.asm_out.unaligned_op.di = NULL;
491 init_machine_status = pa_init_machine_status;
495 pa_init_builtins (void)
497 #ifdef DONT_HAVE_FPUTC_UNLOCKED
498 built_in_decls[(int) BUILT_IN_FPUTC_UNLOCKED] = NULL_TREE;
499 implicit_built_in_decls[(int) BUILT_IN_FPUTC_UNLOCKED] = NULL_TREE;
503 /* Function to init struct machine_function.
504 This will be called, via a pointer variable,
505 from push_function_context. */
507 static struct machine_function *
508 pa_init_machine_status (void)
510 return ggc_alloc_cleared (sizeof (machine_function));
513 /* If FROM is a probable pointer register, mark TO as a probable
514 pointer register with the same pointer alignment as FROM. */
517 copy_reg_pointer (rtx to, rtx from)
519 if (REG_POINTER (from))
520 mark_reg_pointer (to, REGNO_POINTER_ALIGN (REGNO (from)));
523 /* Return 1 if X contains a symbolic expression. We know these
524 expressions will have one of a few well defined forms, so
525 we need only check those forms. */
527 symbolic_expression_p (rtx x)
530 /* Strip off any HIGH. */
531 if (GET_CODE (x) == HIGH)
534 return (symbolic_operand (x, VOIDmode));
537 /* Accept any constant that can be moved in one instruction into a
540 cint_ok_for_move (HOST_WIDE_INT intval)
542 /* OK if ldo, ldil, or zdepi, can be used. */
543 return (CONST_OK_FOR_LETTER_P (intval, 'J')
544 || CONST_OK_FOR_LETTER_P (intval, 'N')
545 || CONST_OK_FOR_LETTER_P (intval, 'K'));
548 /* Return truth value of whether OP can be used as an operand in a
551 adddi3_operand (rtx op, enum machine_mode mode)
553 return (register_operand (op, mode)
554 || (GET_CODE (op) == CONST_INT
555 && (TARGET_64BIT ? INT_14_BITS (op) : INT_11_BITS (op))));
558 /* True iff zdepi can be used to generate this CONST_INT.
559 zdepi first sign extends a 5 bit signed number to a given field
560 length, then places this field anywhere in a zero. */
562 zdepi_cint_p (unsigned HOST_WIDE_INT x)
564 unsigned HOST_WIDE_INT lsb_mask, t;
566 /* This might not be obvious, but it's at least fast.
567 This function is critical; we don't have the time loops would take. */
569 t = ((x >> 4) + lsb_mask) & ~(lsb_mask - 1);
570 /* Return true iff t is a power of two. */
571 return ((t & (t - 1)) == 0);
574 /* True iff depi or extru can be used to compute (reg & mask).
575 Accept bit pattern like these:
580 and_mask_p (unsigned HOST_WIDE_INT mask)
583 mask += mask & -mask;
584 return (mask & (mask - 1)) == 0;
587 /* True iff depi can be used to compute (reg | MASK). */
589 ior_mask_p (unsigned HOST_WIDE_INT mask)
591 mask += mask & -mask;
592 return (mask & (mask - 1)) == 0;
595 /* Legitimize PIC addresses. If the address is already
596 position-independent, we return ORIG. Newly generated
597 position-independent addresses go to REG. If we need more
598 than one register, we lose. */
601 legitimize_pic_address (rtx orig, enum machine_mode mode, rtx reg)
605 gcc_assert (!PA_SYMBOL_REF_TLS_P (orig));
607 /* Labels need special handling. */
608 if (pic_label_operand (orig, mode))
610 /* We do not want to go through the movXX expanders here since that
611 would create recursion.
613 Nor do we really want to call a generator for a named pattern
614 since that requires multiple patterns if we want to support
617 So instead we just emit the raw set, which avoids the movXX
618 expanders completely. */
619 mark_reg_pointer (reg, BITS_PER_UNIT);
620 emit_insn (gen_rtx_SET (VOIDmode, reg, orig));
621 current_function_uses_pic_offset_table = 1;
624 if (GET_CODE (orig) == SYMBOL_REF)
630 /* Before reload, allocate a temporary register for the intermediate
631 result. This allows the sequence to be deleted when the final
632 result is unused and the insns are trivially dead. */
633 tmp_reg = ((reload_in_progress || reload_completed)
634 ? reg : gen_reg_rtx (Pmode));
636 emit_move_insn (tmp_reg,
637 gen_rtx_PLUS (word_mode, pic_offset_table_rtx,
638 gen_rtx_HIGH (word_mode, orig)));
640 = gen_const_mem (Pmode,
641 gen_rtx_LO_SUM (Pmode, tmp_reg,
642 gen_rtx_UNSPEC (Pmode,
646 current_function_uses_pic_offset_table = 1;
647 mark_reg_pointer (reg, BITS_PER_UNIT);
648 insn = emit_move_insn (reg, pic_ref);
650 /* Put a REG_EQUAL note on this insn, so that it can be optimized. */
651 REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_EQUAL, orig, REG_NOTES (insn));
655 else if (GET_CODE (orig) == CONST)
659 if (GET_CODE (XEXP (orig, 0)) == PLUS
660 && XEXP (XEXP (orig, 0), 0) == pic_offset_table_rtx)
664 gcc_assert (GET_CODE (XEXP (orig, 0)) == PLUS);
666 base = legitimize_pic_address (XEXP (XEXP (orig, 0), 0), Pmode, reg);
667 orig = legitimize_pic_address (XEXP (XEXP (orig, 0), 1), Pmode,
668 base == reg ? 0 : reg);
670 if (GET_CODE (orig) == CONST_INT)
672 if (INT_14_BITS (orig))
673 return plus_constant (base, INTVAL (orig));
674 orig = force_reg (Pmode, orig);
676 pic_ref = gen_rtx_PLUS (Pmode, base, orig);
677 /* Likewise, should we set special REG_NOTEs here? */
683 static GTY(()) rtx gen_tls_tga;
686 gen_tls_get_addr (void)
689 gen_tls_tga = init_one_libfunc ("__tls_get_addr");
694 hppa_tls_call (rtx arg)
698 ret = gen_reg_rtx (Pmode);
699 emit_library_call_value (gen_tls_get_addr (), ret,
700 LCT_CONST, Pmode, 1, arg, Pmode);
706 legitimize_tls_address (rtx addr)
708 rtx ret, insn, tmp, t1, t2, tp;
709 enum tls_model model = SYMBOL_REF_TLS_MODEL (addr);
713 case TLS_MODEL_GLOBAL_DYNAMIC:
714 tmp = gen_reg_rtx (Pmode);
715 emit_insn (gen_tgd_load (tmp, addr));
716 ret = hppa_tls_call (tmp);
719 case TLS_MODEL_LOCAL_DYNAMIC:
720 ret = gen_reg_rtx (Pmode);
721 tmp = gen_reg_rtx (Pmode);
723 emit_insn (gen_tld_load (tmp, addr));
724 t1 = hppa_tls_call (tmp);
727 t2 = gen_reg_rtx (Pmode);
728 emit_libcall_block (insn, t2, t1,
729 gen_rtx_UNSPEC (Pmode, gen_rtvec (1, const0_rtx),
731 emit_insn (gen_tld_offset_load (ret, addr, t2));
734 case TLS_MODEL_INITIAL_EXEC:
735 tp = gen_reg_rtx (Pmode);
736 tmp = gen_reg_rtx (Pmode);
737 ret = gen_reg_rtx (Pmode);
738 emit_insn (gen_tp_load (tp));
739 emit_insn (gen_tie_load (tmp, addr));
740 emit_move_insn (ret, gen_rtx_PLUS (Pmode, tp, tmp));
743 case TLS_MODEL_LOCAL_EXEC:
744 tp = gen_reg_rtx (Pmode);
745 ret = gen_reg_rtx (Pmode);
746 emit_insn (gen_tp_load (tp));
747 emit_insn (gen_tle_load (ret, addr, tp));
757 /* Try machine-dependent ways of modifying an illegitimate address
758 to be legitimate. If we find one, return the new, valid address.
759 This macro is used in only one place: `memory_address' in explow.c.
761 OLDX is the address as it was before break_out_memory_refs was called.
762 In some cases it is useful to look at this to decide what needs to be done.
764 MODE and WIN are passed so that this macro can use
765 GO_IF_LEGITIMATE_ADDRESS.
767 It is always safe for this macro to do nothing. It exists to recognize
768 opportunities to optimize the output.
770 For the PA, transform:
772 memory(X + <large int>)
776 if (<large int> & mask) >= 16
777 Y = (<large int> & ~mask) + mask + 1 Round up.
779 Y = (<large int> & ~mask) Round down.
781 memory (Z + (<large int> - Y));
783 This is for CSE to find several similar references, and only use one Z.
785 X can either be a SYMBOL_REF or REG, but because combine cannot
786 perform a 4->2 combination we do nothing for SYMBOL_REF + D where
787 D will not fit in 14 bits.
789 MODE_FLOAT references allow displacements which fit in 5 bits, so use
792 MODE_INT references allow displacements which fit in 14 bits, so use
795 This relies on the fact that most mode MODE_FLOAT references will use FP
796 registers and most mode MODE_INT references will use integer registers.
797 (In the rare case of an FP register used in an integer MODE, we depend
798 on secondary reloads to clean things up.)
801 It is also beneficial to handle (plus (mult (X) (Y)) (Z)) in a special
802 manner if Y is 2, 4, or 8. (allows more shadd insns and shifted indexed
803 addressing modes to be used).
805 Put X and Z into registers. Then put the entire expression into
809 hppa_legitimize_address (rtx x, rtx oldx ATTRIBUTE_UNUSED,
810 enum machine_mode mode)
814 /* We need to canonicalize the order of operands in unscaled indexed
815 addresses since the code that checks if an address is valid doesn't
816 always try both orders. */
817 if (!TARGET_NO_SPACE_REGS
818 && GET_CODE (x) == PLUS
819 && GET_MODE (x) == Pmode
820 && REG_P (XEXP (x, 0))
821 && REG_P (XEXP (x, 1))
822 && REG_POINTER (XEXP (x, 0))
823 && !REG_POINTER (XEXP (x, 1)))
824 return gen_rtx_PLUS (Pmode, XEXP (x, 1), XEXP (x, 0));
826 if (PA_SYMBOL_REF_TLS_P (x))
827 return legitimize_tls_address (x);
829 return legitimize_pic_address (x, mode, gen_reg_rtx (Pmode));
831 /* Strip off CONST. */
832 if (GET_CODE (x) == CONST)
835 /* Special case. Get the SYMBOL_REF into a register and use indexing.
836 That should always be safe. */
837 if (GET_CODE (x) == PLUS
838 && GET_CODE (XEXP (x, 0)) == REG
839 && GET_CODE (XEXP (x, 1)) == SYMBOL_REF)
841 rtx reg = force_reg (Pmode, XEXP (x, 1));
842 return force_reg (Pmode, gen_rtx_PLUS (Pmode, reg, XEXP (x, 0)));
845 /* Note we must reject symbols which represent function addresses
846 since the assembler/linker can't handle arithmetic on plabels. */
847 if (GET_CODE (x) == PLUS
848 && GET_CODE (XEXP (x, 1)) == CONST_INT
849 && ((GET_CODE (XEXP (x, 0)) == SYMBOL_REF
850 && !FUNCTION_NAME_P (XSTR (XEXP (x, 0), 0)))
851 || GET_CODE (XEXP (x, 0)) == REG))
853 rtx int_part, ptr_reg;
855 int offset = INTVAL (XEXP (x, 1));
858 mask = (GET_MODE_CLASS (mode) == MODE_FLOAT
859 ? (TARGET_PA_20 ? 0x3fff : 0x1f) : 0x3fff);
861 /* Choose which way to round the offset. Round up if we
862 are >= halfway to the next boundary. */
863 if ((offset & mask) >= ((mask + 1) / 2))
864 newoffset = (offset & ~ mask) + mask + 1;
866 newoffset = (offset & ~ mask);
868 /* If the newoffset will not fit in 14 bits (ldo), then
869 handling this would take 4 or 5 instructions (2 to load
870 the SYMBOL_REF + 1 or 2 to load the newoffset + 1 to
871 add the new offset and the SYMBOL_REF.) Combine can
872 not handle 4->2 or 5->2 combinations, so do not create
874 if (! VAL_14_BITS_P (newoffset)
875 && GET_CODE (XEXP (x, 0)) == SYMBOL_REF)
877 rtx const_part = plus_constant (XEXP (x, 0), newoffset);
880 gen_rtx_HIGH (Pmode, const_part));
883 gen_rtx_LO_SUM (Pmode,
884 tmp_reg, const_part));
888 if (! VAL_14_BITS_P (newoffset))
889 int_part = force_reg (Pmode, GEN_INT (newoffset));
891 int_part = GEN_INT (newoffset);
893 ptr_reg = force_reg (Pmode,
895 force_reg (Pmode, XEXP (x, 0)),
898 return plus_constant (ptr_reg, offset - newoffset);
901 /* Handle (plus (mult (a) (shadd_constant)) (b)). */
903 if (GET_CODE (x) == PLUS && GET_CODE (XEXP (x, 0)) == MULT
904 && GET_CODE (XEXP (XEXP (x, 0), 1)) == CONST_INT
905 && shadd_constant_p (INTVAL (XEXP (XEXP (x, 0), 1)))
906 && (OBJECT_P (XEXP (x, 1))
907 || GET_CODE (XEXP (x, 1)) == SUBREG)
908 && GET_CODE (XEXP (x, 1)) != CONST)
910 int val = INTVAL (XEXP (XEXP (x, 0), 1));
914 if (GET_CODE (reg1) != REG)
915 reg1 = force_reg (Pmode, force_operand (reg1, 0));
917 reg2 = XEXP (XEXP (x, 0), 0);
918 if (GET_CODE (reg2) != REG)
919 reg2 = force_reg (Pmode, force_operand (reg2, 0));
921 return force_reg (Pmode, gen_rtx_PLUS (Pmode,
928 /* Similarly for (plus (plus (mult (a) (shadd_constant)) (b)) (c)).
930 Only do so for floating point modes since this is more speculative
931 and we lose if it's an integer store. */
932 if (GET_CODE (x) == PLUS
933 && GET_CODE (XEXP (x, 0)) == PLUS
934 && GET_CODE (XEXP (XEXP (x, 0), 0)) == MULT
935 && GET_CODE (XEXP (XEXP (XEXP (x, 0), 0), 1)) == CONST_INT
936 && shadd_constant_p (INTVAL (XEXP (XEXP (XEXP (x, 0), 0), 1)))
937 && (mode == SFmode || mode == DFmode))
940 /* First, try and figure out what to use as a base register. */
941 rtx reg1, reg2, base, idx, orig_base;
943 reg1 = XEXP (XEXP (x, 0), 1);
948 /* Make sure they're both regs. If one was a SYMBOL_REF [+ const],
949 then emit_move_sequence will turn on REG_POINTER so we'll know
950 it's a base register below. */
951 if (GET_CODE (reg1) != REG)
952 reg1 = force_reg (Pmode, force_operand (reg1, 0));
954 if (GET_CODE (reg2) != REG)
955 reg2 = force_reg (Pmode, force_operand (reg2, 0));
957 /* Figure out what the base and index are. */
959 if (GET_CODE (reg1) == REG
960 && REG_POINTER (reg1))
963 orig_base = XEXP (XEXP (x, 0), 1);
964 idx = gen_rtx_PLUS (Pmode,
966 XEXP (XEXP (XEXP (x, 0), 0), 0),
967 XEXP (XEXP (XEXP (x, 0), 0), 1)),
970 else if (GET_CODE (reg2) == REG
971 && REG_POINTER (reg2))
974 orig_base = XEXP (x, 1);
981 /* If the index adds a large constant, try to scale the
982 constant so that it can be loaded with only one insn. */
983 if (GET_CODE (XEXP (idx, 1)) == CONST_INT
984 && VAL_14_BITS_P (INTVAL (XEXP (idx, 1))
985 / INTVAL (XEXP (XEXP (idx, 0), 1)))
986 && INTVAL (XEXP (idx, 1)) % INTVAL (XEXP (XEXP (idx, 0), 1)) == 0)
988 /* Divide the CONST_INT by the scale factor, then add it to A. */
989 int val = INTVAL (XEXP (idx, 1));
991 val /= INTVAL (XEXP (XEXP (idx, 0), 1));
992 reg1 = XEXP (XEXP (idx, 0), 0);
993 if (GET_CODE (reg1) != REG)
994 reg1 = force_reg (Pmode, force_operand (reg1, 0));
996 reg1 = force_reg (Pmode, gen_rtx_PLUS (Pmode, reg1, GEN_INT (val)));
998 /* We can now generate a simple scaled indexed address. */
1001 (Pmode, gen_rtx_PLUS (Pmode,
1002 gen_rtx_MULT (Pmode, reg1,
1003 XEXP (XEXP (idx, 0), 1)),
1007 /* If B + C is still a valid base register, then add them. */
1008 if (GET_CODE (XEXP (idx, 1)) == CONST_INT
1009 && INTVAL (XEXP (idx, 1)) <= 4096
1010 && INTVAL (XEXP (idx, 1)) >= -4096)
1012 int val = INTVAL (XEXP (XEXP (idx, 0), 1));
1015 reg1 = force_reg (Pmode, gen_rtx_PLUS (Pmode, base, XEXP (idx, 1)));
1017 reg2 = XEXP (XEXP (idx, 0), 0);
1018 if (GET_CODE (reg2) != CONST_INT)
1019 reg2 = force_reg (Pmode, force_operand (reg2, 0));
1021 return force_reg (Pmode, gen_rtx_PLUS (Pmode,
1022 gen_rtx_MULT (Pmode,
1028 /* Get the index into a register, then add the base + index and
1029 return a register holding the result. */
1031 /* First get A into a register. */
1032 reg1 = XEXP (XEXP (idx, 0), 0);
1033 if (GET_CODE (reg1) != REG)
1034 reg1 = force_reg (Pmode, force_operand (reg1, 0));
1036 /* And get B into a register. */
1037 reg2 = XEXP (idx, 1);
1038 if (GET_CODE (reg2) != REG)
1039 reg2 = force_reg (Pmode, force_operand (reg2, 0));
1041 reg1 = force_reg (Pmode,
1042 gen_rtx_PLUS (Pmode,
1043 gen_rtx_MULT (Pmode, reg1,
1044 XEXP (XEXP (idx, 0), 1)),
1047 /* Add the result to our base register and return. */
1048 return force_reg (Pmode, gen_rtx_PLUS (Pmode, base, reg1));
1052 /* Uh-oh. We might have an address for x[n-100000]. This needs
1053 special handling to avoid creating an indexed memory address
1054 with x-100000 as the base.
1056 If the constant part is small enough, then it's still safe because
1057 there is a guard page at the beginning and end of the data segment.
1059 Scaled references are common enough that we want to try and rearrange the
1060 terms so that we can use indexing for these addresses too. Only
1061 do the optimization for floatint point modes. */
1063 if (GET_CODE (x) == PLUS
1064 && symbolic_expression_p (XEXP (x, 1)))
1066 /* Ugly. We modify things here so that the address offset specified
1067 by the index expression is computed first, then added to x to form
1068 the entire address. */
1070 rtx regx1, regx2, regy1, regy2, y;
1072 /* Strip off any CONST. */
1074 if (GET_CODE (y) == CONST)
1077 if (GET_CODE (y) == PLUS || GET_CODE (y) == MINUS)
1079 /* See if this looks like
1080 (plus (mult (reg) (shadd_const))
1081 (const (plus (symbol_ref) (const_int))))
1083 Where const_int is small. In that case the const
1084 expression is a valid pointer for indexing.
1086 If const_int is big, but can be divided evenly by shadd_const
1087 and added to (reg). This allows more scaled indexed addresses. */
1088 if (GET_CODE (XEXP (y, 0)) == SYMBOL_REF
1089 && GET_CODE (XEXP (x, 0)) == MULT
1090 && GET_CODE (XEXP (y, 1)) == CONST_INT
1091 && INTVAL (XEXP (y, 1)) >= -4096
1092 && INTVAL (XEXP (y, 1)) <= 4095
1093 && GET_CODE (XEXP (XEXP (x, 0), 1)) == CONST_INT
1094 && shadd_constant_p (INTVAL (XEXP (XEXP (x, 0), 1))))
1096 int val = INTVAL (XEXP (XEXP (x, 0), 1));
1100 if (GET_CODE (reg1) != REG)
1101 reg1 = force_reg (Pmode, force_operand (reg1, 0));
1103 reg2 = XEXP (XEXP (x, 0), 0);
1104 if (GET_CODE (reg2) != REG)
1105 reg2 = force_reg (Pmode, force_operand (reg2, 0));
1107 return force_reg (Pmode,
1108 gen_rtx_PLUS (Pmode,
1109 gen_rtx_MULT (Pmode,
1114 else if ((mode == DFmode || mode == SFmode)
1115 && GET_CODE (XEXP (y, 0)) == SYMBOL_REF
1116 && GET_CODE (XEXP (x, 0)) == MULT
1117 && GET_CODE (XEXP (y, 1)) == CONST_INT
1118 && INTVAL (XEXP (y, 1)) % INTVAL (XEXP (XEXP (x, 0), 1)) == 0
1119 && GET_CODE (XEXP (XEXP (x, 0), 1)) == CONST_INT
1120 && shadd_constant_p (INTVAL (XEXP (XEXP (x, 0), 1))))
1123 = force_reg (Pmode, GEN_INT (INTVAL (XEXP (y, 1))
1124 / INTVAL (XEXP (XEXP (x, 0), 1))));
1125 regx2 = XEXP (XEXP (x, 0), 0);
1126 if (GET_CODE (regx2) != REG)
1127 regx2 = force_reg (Pmode, force_operand (regx2, 0));
1128 regx2 = force_reg (Pmode, gen_rtx_fmt_ee (GET_CODE (y), Pmode,
1132 gen_rtx_PLUS (Pmode,
1133 gen_rtx_MULT (Pmode, regx2,
1134 XEXP (XEXP (x, 0), 1)),
1135 force_reg (Pmode, XEXP (y, 0))));
1137 else if (GET_CODE (XEXP (y, 1)) == CONST_INT
1138 && INTVAL (XEXP (y, 1)) >= -4096
1139 && INTVAL (XEXP (y, 1)) <= 4095)
1141 /* This is safe because of the guard page at the
1142 beginning and end of the data space. Just
1143 return the original address. */
1148 /* Doesn't look like one we can optimize. */
1149 regx1 = force_reg (Pmode, force_operand (XEXP (x, 0), 0));
1150 regy1 = force_reg (Pmode, force_operand (XEXP (y, 0), 0));
1151 regy2 = force_reg (Pmode, force_operand (XEXP (y, 1), 0));
1152 regx1 = force_reg (Pmode,
1153 gen_rtx_fmt_ee (GET_CODE (y), Pmode,
1155 return force_reg (Pmode, gen_rtx_PLUS (Pmode, regx1, regy1));
1163 /* For the HPPA, REG and REG+CONST is cost 0
1164 and addresses involving symbolic constants are cost 2.
1166 PIC addresses are very expensive.
1168 It is no coincidence that this has the same structure
1169 as GO_IF_LEGITIMATE_ADDRESS. */
1172 hppa_address_cost (rtx X)
1174 switch (GET_CODE (X))
1187 /* Compute a (partial) cost for rtx X. Return true if the complete
1188 cost has been computed, and false if subexpressions should be
1189 scanned. In either case, *TOTAL contains the cost result. */
1192 hppa_rtx_costs (rtx x, int code, int outer_code, int *total)
1197 if (INTVAL (x) == 0)
1199 else if (INT_14_BITS (x))
1216 if ((x == CONST0_RTX (DFmode) || x == CONST0_RTX (SFmode))
1217 && outer_code != SET)
1224 if (GET_MODE_CLASS (GET_MODE (x)) == MODE_FLOAT)
1225 *total = COSTS_N_INSNS (3);
1226 else if (TARGET_PA_11 && !TARGET_DISABLE_FPREGS && !TARGET_SOFT_FLOAT)
1227 *total = COSTS_N_INSNS (8);
1229 *total = COSTS_N_INSNS (20);
1233 if (GET_MODE_CLASS (GET_MODE (x)) == MODE_FLOAT)
1235 *total = COSTS_N_INSNS (14);
1243 *total = COSTS_N_INSNS (60);
1246 case PLUS: /* this includes shNadd insns */
1248 if (GET_MODE_CLASS (GET_MODE (x)) == MODE_FLOAT)
1249 *total = COSTS_N_INSNS (3);
1251 *total = COSTS_N_INSNS (1);
1257 *total = COSTS_N_INSNS (1);
1265 /* Ensure mode of ORIG, a REG rtx, is MODE. Returns either ORIG or a
1266 new rtx with the correct mode. */
1268 force_mode (enum machine_mode mode, rtx orig)
1270 if (mode == GET_MODE (orig))
1273 gcc_assert (REGNO (orig) < FIRST_PSEUDO_REGISTER);
1275 return gen_rtx_REG (mode, REGNO (orig));
1278 /* Return 1 if *X is a thread-local symbol. */
1281 pa_tls_symbol_ref_1 (rtx *x, void *data ATTRIBUTE_UNUSED)
1283 return PA_SYMBOL_REF_TLS_P (*x);
1286 /* Return 1 if X contains a thread-local symbol. */
1289 pa_tls_referenced_p (rtx x)
1291 if (!TARGET_HAVE_TLS)
1294 return for_each_rtx (&x, &pa_tls_symbol_ref_1, 0);
1297 /* Emit insns to move operands[1] into operands[0].
1299 Return 1 if we have written out everything that needs to be done to
1300 do the move. Otherwise, return 0 and the caller will emit the move
1303 Note SCRATCH_REG may not be in the proper mode depending on how it
1304 will be used. This routine is responsible for creating a new copy
1305 of SCRATCH_REG in the proper mode. */
1308 emit_move_sequence (rtx *operands, enum machine_mode mode, rtx scratch_reg)
1310 register rtx operand0 = operands[0];
1311 register rtx operand1 = operands[1];
1314 /* We can only handle indexed addresses in the destination operand
1315 of floating point stores. Thus, we need to break out indexed
1316 addresses from the destination operand. */
1317 if (GET_CODE (operand0) == MEM && IS_INDEX_ADDR_P (XEXP (operand0, 0)))
1319 /* This is only safe up to the beginning of life analysis. */
1320 gcc_assert (!no_new_pseudos);
1322 tem = copy_to_mode_reg (Pmode, XEXP (operand0, 0));
1323 operand0 = replace_equiv_address (operand0, tem);
1326 /* On targets with non-equivalent space registers, break out unscaled
1327 indexed addresses from the source operand before the final CSE.
1328 We have to do this because the REG_POINTER flag is not correctly
1329 carried through various optimization passes and CSE may substitute
1330 a pseudo without the pointer set for one with the pointer set. As
1331 a result, we loose various opportunities to create insns with
1332 unscaled indexed addresses. */
1333 if (!TARGET_NO_SPACE_REGS
1334 && !cse_not_expected
1335 && GET_CODE (operand1) == MEM
1336 && GET_CODE (XEXP (operand1, 0)) == PLUS
1337 && REG_P (XEXP (XEXP (operand1, 0), 0))
1338 && REG_P (XEXP (XEXP (operand1, 0), 1)))
1340 = replace_equiv_address (operand1,
1341 copy_to_mode_reg (Pmode, XEXP (operand1, 0)));
1344 && reload_in_progress && GET_CODE (operand0) == REG
1345 && REGNO (operand0) >= FIRST_PSEUDO_REGISTER)
1346 operand0 = reg_equiv_mem[REGNO (operand0)];
1347 else if (scratch_reg
1348 && reload_in_progress && GET_CODE (operand0) == SUBREG
1349 && GET_CODE (SUBREG_REG (operand0)) == REG
1350 && REGNO (SUBREG_REG (operand0)) >= FIRST_PSEUDO_REGISTER)
1352 /* We must not alter SUBREG_BYTE (operand0) since that would confuse
1353 the code which tracks sets/uses for delete_output_reload. */
1354 rtx temp = gen_rtx_SUBREG (GET_MODE (operand0),
1355 reg_equiv_mem [REGNO (SUBREG_REG (operand0))],
1356 SUBREG_BYTE (operand0));
1357 operand0 = alter_subreg (&temp);
1361 && reload_in_progress && GET_CODE (operand1) == REG
1362 && REGNO (operand1) >= FIRST_PSEUDO_REGISTER)
1363 operand1 = reg_equiv_mem[REGNO (operand1)];
1364 else if (scratch_reg
1365 && reload_in_progress && GET_CODE (operand1) == SUBREG
1366 && GET_CODE (SUBREG_REG (operand1)) == REG
1367 && REGNO (SUBREG_REG (operand1)) >= FIRST_PSEUDO_REGISTER)
1369 /* We must not alter SUBREG_BYTE (operand0) since that would confuse
1370 the code which tracks sets/uses for delete_output_reload. */
1371 rtx temp = gen_rtx_SUBREG (GET_MODE (operand1),
1372 reg_equiv_mem [REGNO (SUBREG_REG (operand1))],
1373 SUBREG_BYTE (operand1));
1374 operand1 = alter_subreg (&temp);
1377 if (scratch_reg && reload_in_progress && GET_CODE (operand0) == MEM
1378 && ((tem = find_replacement (&XEXP (operand0, 0)))
1379 != XEXP (operand0, 0)))
1380 operand0 = replace_equiv_address (operand0, tem);
1382 if (scratch_reg && reload_in_progress && GET_CODE (operand1) == MEM
1383 && ((tem = find_replacement (&XEXP (operand1, 0)))
1384 != XEXP (operand1, 0)))
1385 operand1 = replace_equiv_address (operand1, tem);
1387 /* Handle secondary reloads for loads/stores of FP registers from
1388 REG+D addresses where D does not fit in 5 or 14 bits, including
1389 (subreg (mem (addr))) cases. */
1391 && fp_reg_operand (operand0, mode)
1392 && ((GET_CODE (operand1) == MEM
1393 && !memory_address_p ((GET_MODE_SIZE (mode) == 4 ? SFmode : DFmode),
1394 XEXP (operand1, 0)))
1395 || ((GET_CODE (operand1) == SUBREG
1396 && GET_CODE (XEXP (operand1, 0)) == MEM
1397 && !memory_address_p ((GET_MODE_SIZE (mode) == 4
1399 XEXP (XEXP (operand1, 0), 0))))))
1401 if (GET_CODE (operand1) == SUBREG)
1402 operand1 = XEXP (operand1, 0);
1404 /* SCRATCH_REG will hold an address and maybe the actual data. We want
1405 it in WORD_MODE regardless of what mode it was originally given
1407 scratch_reg = force_mode (word_mode, scratch_reg);
1409 /* D might not fit in 14 bits either; for such cases load D into
1411 if (!memory_address_p (Pmode, XEXP (operand1, 0)))
1413 emit_move_insn (scratch_reg, XEXP (XEXP (operand1, 0), 1));
1414 emit_move_insn (scratch_reg,
1415 gen_rtx_fmt_ee (GET_CODE (XEXP (operand1, 0)),
1417 XEXP (XEXP (operand1, 0), 0),
1421 emit_move_insn (scratch_reg, XEXP (operand1, 0));
1422 emit_insn (gen_rtx_SET (VOIDmode, operand0,
1423 replace_equiv_address (operand1, scratch_reg)));
1426 else if (scratch_reg
1427 && fp_reg_operand (operand1, mode)
1428 && ((GET_CODE (operand0) == MEM
1429 && !memory_address_p ((GET_MODE_SIZE (mode) == 4
1431 XEXP (operand0, 0)))
1432 || ((GET_CODE (operand0) == SUBREG)
1433 && GET_CODE (XEXP (operand0, 0)) == MEM
1434 && !memory_address_p ((GET_MODE_SIZE (mode) == 4
1436 XEXP (XEXP (operand0, 0), 0)))))
1438 if (GET_CODE (operand0) == SUBREG)
1439 operand0 = XEXP (operand0, 0);
1441 /* SCRATCH_REG will hold an address and maybe the actual data. We want
1442 it in WORD_MODE regardless of what mode it was originally given
1444 scratch_reg = force_mode (word_mode, scratch_reg);
1446 /* D might not fit in 14 bits either; for such cases load D into
1448 if (!memory_address_p (Pmode, XEXP (operand0, 0)))
1450 emit_move_insn (scratch_reg, XEXP (XEXP (operand0, 0), 1));
1451 emit_move_insn (scratch_reg, gen_rtx_fmt_ee (GET_CODE (XEXP (operand0,
1454 XEXP (XEXP (operand0, 0),
1459 emit_move_insn (scratch_reg, XEXP (operand0, 0));
1460 emit_insn (gen_rtx_SET (VOIDmode,
1461 replace_equiv_address (operand0, scratch_reg),
1465 /* Handle secondary reloads for loads of FP registers from constant
1466 expressions by forcing the constant into memory.
1468 Use scratch_reg to hold the address of the memory location.
1470 The proper fix is to change PREFERRED_RELOAD_CLASS to return
1471 NO_REGS when presented with a const_int and a register class
1472 containing only FP registers. Doing so unfortunately creates
1473 more problems than it solves. Fix this for 2.5. */
1474 else if (scratch_reg
1475 && CONSTANT_P (operand1)
1476 && fp_reg_operand (operand0, mode))
1478 rtx const_mem, xoperands[2];
1480 /* SCRATCH_REG will hold an address and maybe the actual data. We want
1481 it in WORD_MODE regardless of what mode it was originally given
1483 scratch_reg = force_mode (word_mode, scratch_reg);
1485 /* Force the constant into memory and put the address of the
1486 memory location into scratch_reg. */
1487 const_mem = force_const_mem (mode, operand1);
1488 xoperands[0] = scratch_reg;
1489 xoperands[1] = XEXP (const_mem, 0);
1490 emit_move_sequence (xoperands, Pmode, 0);
1492 /* Now load the destination register. */
1493 emit_insn (gen_rtx_SET (mode, operand0,
1494 replace_equiv_address (const_mem, scratch_reg)));
1497 /* Handle secondary reloads for SAR. These occur when trying to load
1498 the SAR from memory, FP register, or with a constant. */
1499 else if (scratch_reg
1500 && GET_CODE (operand0) == REG
1501 && REGNO (operand0) < FIRST_PSEUDO_REGISTER
1502 && REGNO_REG_CLASS (REGNO (operand0)) == SHIFT_REGS
1503 && (GET_CODE (operand1) == MEM
1504 || GET_CODE (operand1) == CONST_INT
1505 || (GET_CODE (operand1) == REG
1506 && FP_REG_CLASS_P (REGNO_REG_CLASS (REGNO (operand1))))))
1508 /* D might not fit in 14 bits either; for such cases load D into
1510 if (GET_CODE (operand1) == MEM
1511 && !memory_address_p (Pmode, XEXP (operand1, 0)))
1513 /* We are reloading the address into the scratch register, so we
1514 want to make sure the scratch register is a full register. */
1515 scratch_reg = force_mode (word_mode, scratch_reg);
1517 emit_move_insn (scratch_reg, XEXP (XEXP (operand1, 0), 1));
1518 emit_move_insn (scratch_reg, gen_rtx_fmt_ee (GET_CODE (XEXP (operand1,
1521 XEXP (XEXP (operand1, 0),
1525 /* Now we are going to load the scratch register from memory,
1526 we want to load it in the same width as the original MEM,
1527 which must be the same as the width of the ultimate destination,
1529 scratch_reg = force_mode (GET_MODE (operand0), scratch_reg);
1531 emit_move_insn (scratch_reg,
1532 replace_equiv_address (operand1, scratch_reg));
1536 /* We want to load the scratch register using the same mode as
1537 the ultimate destination. */
1538 scratch_reg = force_mode (GET_MODE (operand0), scratch_reg);
1540 emit_move_insn (scratch_reg, operand1);
1543 /* And emit the insn to set the ultimate destination. We know that
1544 the scratch register has the same mode as the destination at this
1546 emit_move_insn (operand0, scratch_reg);
1549 /* Handle the most common case: storing into a register. */
1550 else if (register_operand (operand0, mode))
1552 if (register_operand (operand1, mode)
1553 || (GET_CODE (operand1) == CONST_INT
1554 && cint_ok_for_move (INTVAL (operand1)))
1555 || (operand1 == CONST0_RTX (mode))
1556 || (GET_CODE (operand1) == HIGH
1557 && !symbolic_operand (XEXP (operand1, 0), VOIDmode))
1558 /* Only `general_operands' can come here, so MEM is ok. */
1559 || GET_CODE (operand1) == MEM)
1561 /* Various sets are created during RTL generation which don't
1562 have the REG_POINTER flag correctly set. After the CSE pass,
1563 instruction recognition can fail if we don't consistently
1564 set this flag when performing register copies. This should
1565 also improve the opportunities for creating insns that use
1566 unscaled indexing. */
1567 if (REG_P (operand0) && REG_P (operand1))
1569 if (REG_POINTER (operand1)
1570 && !REG_POINTER (operand0)
1571 && !HARD_REGISTER_P (operand0))
1572 copy_reg_pointer (operand0, operand1);
1573 else if (REG_POINTER (operand0)
1574 && !REG_POINTER (operand1)
1575 && !HARD_REGISTER_P (operand1))
1576 copy_reg_pointer (operand1, operand0);
1579 /* When MEMs are broken out, the REG_POINTER flag doesn't
1580 get set. In some cases, we can set the REG_POINTER flag
1581 from the declaration for the MEM. */
1582 if (REG_P (operand0)
1583 && GET_CODE (operand1) == MEM
1584 && !REG_POINTER (operand0))
1586 tree decl = MEM_EXPR (operand1);
1588 /* Set the register pointer flag and register alignment
1589 if the declaration for this memory reference is a
1590 pointer type. Fortran indirect argument references
1593 && !(flag_argument_noalias > 1
1594 && TREE_CODE (decl) == INDIRECT_REF
1595 && TREE_CODE (TREE_OPERAND (decl, 0)) == PARM_DECL))
1599 /* If this is a COMPONENT_REF, use the FIELD_DECL from
1601 if (TREE_CODE (decl) == COMPONENT_REF)
1602 decl = TREE_OPERAND (decl, 1);
1604 type = TREE_TYPE (decl);
1605 if (TREE_CODE (type) == ARRAY_TYPE)
1606 type = get_inner_array_type (type);
1608 if (POINTER_TYPE_P (type))
1612 type = TREE_TYPE (type);
1613 /* Using TYPE_ALIGN_OK is rather conservative as
1614 only the ada frontend actually sets it. */
1615 align = (TYPE_ALIGN_OK (type) ? TYPE_ALIGN (type)
1617 mark_reg_pointer (operand0, align);
1622 emit_insn (gen_rtx_SET (VOIDmode, operand0, operand1));
1626 else if (GET_CODE (operand0) == MEM)
1628 if (mode == DFmode && operand1 == CONST0_RTX (mode)
1629 && !(reload_in_progress || reload_completed))
1631 rtx temp = gen_reg_rtx (DFmode);
1633 emit_insn (gen_rtx_SET (VOIDmode, temp, operand1));
1634 emit_insn (gen_rtx_SET (VOIDmode, operand0, temp));
1637 if (register_operand (operand1, mode) || operand1 == CONST0_RTX (mode))
1639 /* Run this case quickly. */
1640 emit_insn (gen_rtx_SET (VOIDmode, operand0, operand1));
1643 if (! (reload_in_progress || reload_completed))
1645 operands[0] = validize_mem (operand0);
1646 operands[1] = operand1 = force_reg (mode, operand1);
1650 /* Simplify the source if we need to.
1651 Note we do have to handle function labels here, even though we do
1652 not consider them legitimate constants. Loop optimizations can
1653 call the emit_move_xxx with one as a source. */
1654 if ((GET_CODE (operand1) != HIGH && immediate_operand (operand1, mode))
1655 || function_label_operand (operand1, mode)
1656 || (GET_CODE (operand1) == HIGH
1657 && symbolic_operand (XEXP (operand1, 0), mode)))
1661 if (GET_CODE (operand1) == HIGH)
1664 operand1 = XEXP (operand1, 0);
1666 if (symbolic_operand (operand1, mode))
1668 /* Argh. The assembler and linker can't handle arithmetic
1671 So we force the plabel into memory, load operand0 from
1672 the memory location, then add in the constant part. */
1673 if ((GET_CODE (operand1) == CONST
1674 && GET_CODE (XEXP (operand1, 0)) == PLUS
1675 && function_label_operand (XEXP (XEXP (operand1, 0), 0), Pmode))
1676 || function_label_operand (operand1, mode))
1678 rtx temp, const_part;
1680 /* Figure out what (if any) scratch register to use. */
1681 if (reload_in_progress || reload_completed)
1683 scratch_reg = scratch_reg ? scratch_reg : operand0;
1684 /* SCRATCH_REG will hold an address and maybe the actual
1685 data. We want it in WORD_MODE regardless of what mode it
1686 was originally given to us. */
1687 scratch_reg = force_mode (word_mode, scratch_reg);
1690 scratch_reg = gen_reg_rtx (Pmode);
1692 if (GET_CODE (operand1) == CONST)
1694 /* Save away the constant part of the expression. */
1695 const_part = XEXP (XEXP (operand1, 0), 1);
1696 gcc_assert (GET_CODE (const_part) == CONST_INT);
1698 /* Force the function label into memory. */
1699 temp = force_const_mem (mode, XEXP (XEXP (operand1, 0), 0));
1703 /* No constant part. */
1704 const_part = NULL_RTX;
1706 /* Force the function label into memory. */
1707 temp = force_const_mem (mode, operand1);
1711 /* Get the address of the memory location. PIC-ify it if
1713 temp = XEXP (temp, 0);
1715 temp = legitimize_pic_address (temp, mode, scratch_reg);
1717 /* Put the address of the memory location into our destination
1720 emit_move_sequence (operands, mode, scratch_reg);
1722 /* Now load from the memory location into our destination
1724 operands[1] = gen_rtx_MEM (Pmode, operands[0]);
1725 emit_move_sequence (operands, mode, scratch_reg);
1727 /* And add back in the constant part. */
1728 if (const_part != NULL_RTX)
1729 expand_inc (operand0, const_part);
1738 if (reload_in_progress || reload_completed)
1740 temp = scratch_reg ? scratch_reg : operand0;
1741 /* TEMP will hold an address and maybe the actual
1742 data. We want it in WORD_MODE regardless of what mode it
1743 was originally given to us. */
1744 temp = force_mode (word_mode, temp);
1747 temp = gen_reg_rtx (Pmode);
1749 /* (const (plus (symbol) (const_int))) must be forced to
1750 memory during/after reload if the const_int will not fit
1752 if (GET_CODE (operand1) == CONST
1753 && GET_CODE (XEXP (operand1, 0)) == PLUS
1754 && GET_CODE (XEXP (XEXP (operand1, 0), 1)) == CONST_INT
1755 && !INT_14_BITS (XEXP (XEXP (operand1, 0), 1))
1756 && (reload_completed || reload_in_progress)
1759 rtx const_mem = force_const_mem (mode, operand1);
1760 operands[1] = legitimize_pic_address (XEXP (const_mem, 0),
1762 operands[1] = replace_equiv_address (const_mem, operands[1]);
1763 emit_move_sequence (operands, mode, temp);
1767 operands[1] = legitimize_pic_address (operand1, mode, temp);
1768 if (REG_P (operand0) && REG_P (operands[1]))
1769 copy_reg_pointer (operand0, operands[1]);
1770 emit_insn (gen_rtx_SET (VOIDmode, operand0, operands[1]));
1773 /* On the HPPA, references to data space are supposed to use dp,
1774 register 27, but showing it in the RTL inhibits various cse
1775 and loop optimizations. */
1780 if (reload_in_progress || reload_completed)
1782 temp = scratch_reg ? scratch_reg : operand0;
1783 /* TEMP will hold an address and maybe the actual
1784 data. We want it in WORD_MODE regardless of what mode it
1785 was originally given to us. */
1786 temp = force_mode (word_mode, temp);
1789 temp = gen_reg_rtx (mode);
1791 /* Loading a SYMBOL_REF into a register makes that register
1792 safe to be used as the base in an indexed address.
1794 Don't mark hard registers though. That loses. */
1795 if (GET_CODE (operand0) == REG
1796 && REGNO (operand0) >= FIRST_PSEUDO_REGISTER)
1797 mark_reg_pointer (operand0, BITS_PER_UNIT);
1798 if (REGNO (temp) >= FIRST_PSEUDO_REGISTER)
1799 mark_reg_pointer (temp, BITS_PER_UNIT);
1802 set = gen_rtx_SET (mode, operand0, temp);
1804 set = gen_rtx_SET (VOIDmode,
1806 gen_rtx_LO_SUM (mode, temp, operand1));
1808 emit_insn (gen_rtx_SET (VOIDmode,
1810 gen_rtx_HIGH (mode, operand1)));
1816 else if (pa_tls_referenced_p (operand1))
1821 if (GET_CODE (tmp) == CONST && GET_CODE (XEXP (tmp, 0)) == PLUS)
1823 addend = XEXP (XEXP (tmp, 0), 1);
1824 tmp = XEXP (XEXP (tmp, 0), 0);
1827 gcc_assert (GET_CODE (tmp) == SYMBOL_REF);
1828 tmp = legitimize_tls_address (tmp);
1831 tmp = gen_rtx_PLUS (mode, tmp, addend);
1832 tmp = force_operand (tmp, operands[0]);
1836 else if (GET_CODE (operand1) != CONST_INT
1837 || !cint_ok_for_move (INTVAL (operand1)))
1841 HOST_WIDE_INT value = 0;
1842 HOST_WIDE_INT insv = 0;
1845 if (GET_CODE (operand1) == CONST_INT)
1846 value = INTVAL (operand1);
1849 && GET_CODE (operand1) == CONST_INT
1850 && HOST_BITS_PER_WIDE_INT > 32
1851 && GET_MODE_BITSIZE (GET_MODE (operand0)) > 32)
1855 /* Extract the low order 32 bits of the value and sign extend.
1856 If the new value is the same as the original value, we can
1857 can use the original value as-is. If the new value is
1858 different, we use it and insert the most-significant 32-bits
1859 of the original value into the final result. */
1860 nval = ((value & (((HOST_WIDE_INT) 2 << 31) - 1))
1861 ^ ((HOST_WIDE_INT) 1 << 31)) - ((HOST_WIDE_INT) 1 << 31);
1864 #if HOST_BITS_PER_WIDE_INT > 32
1865 insv = value >= 0 ? value >> 32 : ~(~value >> 32);
1869 operand1 = GEN_INT (nval);
1873 if (reload_in_progress || reload_completed)
1874 temp = scratch_reg ? scratch_reg : operand0;
1876 temp = gen_reg_rtx (mode);
1878 /* We don't directly split DImode constants on 32-bit targets
1879 because PLUS uses an 11-bit immediate and the insn sequence
1880 generated is not as efficient as the one using HIGH/LO_SUM. */
1881 if (GET_CODE (operand1) == CONST_INT
1882 && GET_MODE_BITSIZE (mode) <= HOST_BITS_PER_WIDE_INT
1885 /* Directly break constant into high and low parts. This
1886 provides better optimization opportunities because various
1887 passes recognize constants split with PLUS but not LO_SUM.
1888 We use a 14-bit signed low part except when the addition
1889 of 0x4000 to the high part might change the sign of the
1891 HOST_WIDE_INT low = value & 0x3fff;
1892 HOST_WIDE_INT high = value & ~ 0x3fff;
1896 if (high == 0x7fffc000 || (mode == HImode && high == 0x4000))
1904 emit_insn (gen_rtx_SET (VOIDmode, temp, GEN_INT (high)));
1905 operands[1] = gen_rtx_PLUS (mode, temp, GEN_INT (low));
1909 emit_insn (gen_rtx_SET (VOIDmode, temp,
1910 gen_rtx_HIGH (mode, operand1)));
1911 operands[1] = gen_rtx_LO_SUM (mode, temp, operand1);
1914 insn = emit_move_insn (operands[0], operands[1]);
1916 /* Now insert the most significant 32 bits of the value
1917 into the register. When we don't have a second register
1918 available, it could take up to nine instructions to load
1919 a 64-bit integer constant. Prior to reload, we force
1920 constants that would take more than three instructions
1921 to load to the constant pool. During and after reload,
1922 we have to handle all possible values. */
1925 /* Use a HIGH/LO_SUM/INSV sequence if we have a second
1926 register and the value to be inserted is outside the
1927 range that can be loaded with three depdi instructions. */
1928 if (temp != operand0 && (insv >= 16384 || insv < -16384))
1930 operand1 = GEN_INT (insv);
1932 emit_insn (gen_rtx_SET (VOIDmode, temp,
1933 gen_rtx_HIGH (mode, operand1)));
1934 emit_move_insn (temp, gen_rtx_LO_SUM (mode, temp, operand1));
1935 emit_insn (gen_insv (operand0, GEN_INT (32),
1940 int len = 5, pos = 27;
1942 /* Insert the bits using the depdi instruction. */
1945 HOST_WIDE_INT v5 = ((insv & 31) ^ 16) - 16;
1946 HOST_WIDE_INT sign = v5 < 0;
1948 /* Left extend the insertion. */
1949 insv = (insv >= 0 ? insv >> len : ~(~insv >> len));
1950 while (pos > 0 && (insv & 1) == sign)
1952 insv = (insv >= 0 ? insv >> 1 : ~(~insv >> 1));
1957 emit_insn (gen_insv (operand0, GEN_INT (len),
1958 GEN_INT (pos), GEN_INT (v5)));
1960 len = pos > 0 && pos < 5 ? pos : 5;
1967 = gen_rtx_EXPR_LIST (REG_EQUAL, op1, REG_NOTES (insn));
1972 /* Now have insn-emit do whatever it normally does. */
1976 /* Examine EXP and return nonzero if it contains an ADDR_EXPR (meaning
1977 it will need a link/runtime reloc). */
1980 reloc_needed (tree exp)
1984 switch (TREE_CODE (exp))
1991 reloc = reloc_needed (TREE_OPERAND (exp, 0));
1992 reloc |= reloc_needed (TREE_OPERAND (exp, 1));
1997 case NON_LVALUE_EXPR:
1998 reloc = reloc_needed (TREE_OPERAND (exp, 0));
2004 unsigned HOST_WIDE_INT ix;
2006 FOR_EACH_CONSTRUCTOR_VALUE (CONSTRUCTOR_ELTS (exp), ix, value)
2008 reloc |= reloc_needed (value);
2021 /* Does operand (which is a symbolic_operand) live in text space?
2022 If so, SYMBOL_REF_FLAG, which is set by pa_encode_section_info,
2026 read_only_operand (rtx operand, enum machine_mode mode ATTRIBUTE_UNUSED)
2028 if (GET_CODE (operand) == CONST)
2029 operand = XEXP (XEXP (operand, 0), 0);
2032 if (GET_CODE (operand) == SYMBOL_REF)
2033 return SYMBOL_REF_FLAG (operand) && !CONSTANT_POOL_ADDRESS_P (operand);
2037 if (GET_CODE (operand) == SYMBOL_REF)
2038 return SYMBOL_REF_FLAG (operand) || CONSTANT_POOL_ADDRESS_P (operand);
2044 /* Return the best assembler insn template
2045 for moving operands[1] into operands[0] as a fullword. */
2047 singlemove_string (rtx *operands)
2049 HOST_WIDE_INT intval;
2051 if (GET_CODE (operands[0]) == MEM)
2052 return "stw %r1,%0";
2053 if (GET_CODE (operands[1]) == MEM)
2055 if (GET_CODE (operands[1]) == CONST_DOUBLE)
2060 gcc_assert (GET_MODE (operands[1]) == SFmode);
2062 /* Translate the CONST_DOUBLE to a CONST_INT with the same target
2064 REAL_VALUE_FROM_CONST_DOUBLE (d, operands[1]);
2065 REAL_VALUE_TO_TARGET_SINGLE (d, i);
2067 operands[1] = GEN_INT (i);
2068 /* Fall through to CONST_INT case. */
2070 if (GET_CODE (operands[1]) == CONST_INT)
2072 intval = INTVAL (operands[1]);
2074 if (VAL_14_BITS_P (intval))
2076 else if ((intval & 0x7ff) == 0)
2077 return "ldil L'%1,%0";
2078 else if (zdepi_cint_p (intval))
2079 return "{zdepi %Z1,%0|depwi,z %Z1,%0}";
2081 return "ldil L'%1,%0\n\tldo R'%1(%0),%0";
2083 return "copy %1,%0";
2087 /* Compute position (in OP[1]) and width (in OP[2])
2088 useful for copying IMM to a register using the zdepi
2089 instructions. Store the immediate value to insert in OP[0]. */
2091 compute_zdepwi_operands (unsigned HOST_WIDE_INT imm, unsigned *op)
2095 /* Find the least significant set bit in IMM. */
2096 for (lsb = 0; lsb < 32; lsb++)
2103 /* Choose variants based on *sign* of the 5-bit field. */
2104 if ((imm & 0x10) == 0)
2105 len = (lsb <= 28) ? 4 : 32 - lsb;
2108 /* Find the width of the bitstring in IMM. */
2109 for (len = 5; len < 32; len++)
2111 if ((imm & (1 << len)) == 0)
2115 /* Sign extend IMM as a 5-bit value. */
2116 imm = (imm & 0xf) - 0x10;
2124 /* Compute position (in OP[1]) and width (in OP[2])
2125 useful for copying IMM to a register using the depdi,z
2126 instructions. Store the immediate value to insert in OP[0]. */
2128 compute_zdepdi_operands (unsigned HOST_WIDE_INT imm, unsigned *op)
2130 HOST_WIDE_INT lsb, len;
2132 /* Find the least significant set bit in IMM. */
2133 for (lsb = 0; lsb < HOST_BITS_PER_WIDE_INT; lsb++)
2140 /* Choose variants based on *sign* of the 5-bit field. */
2141 if ((imm & 0x10) == 0)
2142 len = ((lsb <= HOST_BITS_PER_WIDE_INT - 4)
2143 ? 4 : HOST_BITS_PER_WIDE_INT - lsb);
2146 /* Find the width of the bitstring in IMM. */
2147 for (len = 5; len < HOST_BITS_PER_WIDE_INT; len++)
2149 if ((imm & ((unsigned HOST_WIDE_INT) 1 << len)) == 0)
2153 /* Sign extend IMM as a 5-bit value. */
2154 imm = (imm & 0xf) - 0x10;
2162 /* Output assembler code to perform a doubleword move insn
2163 with operands OPERANDS. */
2166 output_move_double (rtx *operands)
2168 enum { REGOP, OFFSOP, MEMOP, CNSTOP, RNDOP } optype0, optype1;
2170 rtx addreg0 = 0, addreg1 = 0;
2172 /* First classify both operands. */
2174 if (REG_P (operands[0]))
2176 else if (offsettable_memref_p (operands[0]))
2178 else if (GET_CODE (operands[0]) == MEM)
2183 if (REG_P (operands[1]))
2185 else if (CONSTANT_P (operands[1]))
2187 else if (offsettable_memref_p (operands[1]))
2189 else if (GET_CODE (operands[1]) == MEM)
2194 /* Check for the cases that the operand constraints are not
2195 supposed to allow to happen. */
2196 gcc_assert (optype0 == REGOP || optype1 == REGOP);
2198 /* Handle auto decrementing and incrementing loads and stores
2199 specifically, since the structure of the function doesn't work
2200 for them without major modification. Do it better when we learn
2201 this port about the general inc/dec addressing of PA.
2202 (This was written by tege. Chide him if it doesn't work.) */
2204 if (optype0 == MEMOP)
2206 /* We have to output the address syntax ourselves, since print_operand
2207 doesn't deal with the addresses we want to use. Fix this later. */
2209 rtx addr = XEXP (operands[0], 0);
2210 if (GET_CODE (addr) == POST_INC || GET_CODE (addr) == POST_DEC)
2212 rtx high_reg = gen_rtx_SUBREG (SImode, operands[1], 0);
2214 operands[0] = XEXP (addr, 0);
2215 gcc_assert (GET_CODE (operands[1]) == REG
2216 && GET_CODE (operands[0]) == REG);
2218 gcc_assert (!reg_overlap_mentioned_p (high_reg, addr));
2220 /* No overlap between high target register and address
2221 register. (We do this in a non-obvious way to
2222 save a register file writeback) */
2223 if (GET_CODE (addr) == POST_INC)
2224 return "{stws|stw},ma %1,8(%0)\n\tstw %R1,-4(%0)";
2225 return "{stws|stw},ma %1,-8(%0)\n\tstw %R1,12(%0)";
2227 else if (GET_CODE (addr) == PRE_INC || GET_CODE (addr) == PRE_DEC)
2229 rtx high_reg = gen_rtx_SUBREG (SImode, operands[1], 0);
2231 operands[0] = XEXP (addr, 0);
2232 gcc_assert (GET_CODE (operands[1]) == REG
2233 && GET_CODE (operands[0]) == REG);
2235 gcc_assert (!reg_overlap_mentioned_p (high_reg, addr));
2236 /* No overlap between high target register and address
2237 register. (We do this in a non-obvious way to save a
2238 register file writeback) */
2239 if (GET_CODE (addr) == PRE_INC)
2240 return "{stws|stw},mb %1,8(%0)\n\tstw %R1,4(%0)";
2241 return "{stws|stw},mb %1,-8(%0)\n\tstw %R1,4(%0)";
2244 if (optype1 == MEMOP)
2246 /* We have to output the address syntax ourselves, since print_operand
2247 doesn't deal with the addresses we want to use. Fix this later. */
2249 rtx addr = XEXP (operands[1], 0);
2250 if (GET_CODE (addr) == POST_INC || GET_CODE (addr) == POST_DEC)
2252 rtx high_reg = gen_rtx_SUBREG (SImode, operands[0], 0);
2254 operands[1] = XEXP (addr, 0);
2255 gcc_assert (GET_CODE (operands[0]) == REG
2256 && GET_CODE (operands[1]) == REG);
2258 if (!reg_overlap_mentioned_p (high_reg, addr))
2260 /* No overlap between high target register and address
2261 register. (We do this in a non-obvious way to
2262 save a register file writeback) */
2263 if (GET_CODE (addr) == POST_INC)
2264 return "{ldws|ldw},ma 8(%1),%0\n\tldw -4(%1),%R0";
2265 return "{ldws|ldw},ma -8(%1),%0\n\tldw 12(%1),%R0";
2269 /* This is an undefined situation. We should load into the
2270 address register *and* update that register. Probably
2271 we don't need to handle this at all. */
2272 if (GET_CODE (addr) == POST_INC)
2273 return "ldw 4(%1),%R0\n\t{ldws|ldw},ma 8(%1),%0";
2274 return "ldw 4(%1),%R0\n\t{ldws|ldw},ma -8(%1),%0";
2277 else if (GET_CODE (addr) == PRE_INC || GET_CODE (addr) == PRE_DEC)
2279 rtx high_reg = gen_rtx_SUBREG (SImode, operands[0], 0);
2281 operands[1] = XEXP (addr, 0);
2282 gcc_assert (GET_CODE (operands[0]) == REG
2283 && GET_CODE (operands[1]) == REG);
2285 if (!reg_overlap_mentioned_p (high_reg, addr))
2287 /* No overlap between high target register and address
2288 register. (We do this in a non-obvious way to
2289 save a register file writeback) */
2290 if (GET_CODE (addr) == PRE_INC)
2291 return "{ldws|ldw},mb 8(%1),%0\n\tldw 4(%1),%R0";
2292 return "{ldws|ldw},mb -8(%1),%0\n\tldw 4(%1),%R0";
2296 /* This is an undefined situation. We should load into the
2297 address register *and* update that register. Probably
2298 we don't need to handle this at all. */
2299 if (GET_CODE (addr) == PRE_INC)
2300 return "ldw 12(%1),%R0\n\t{ldws|ldw},mb 8(%1),%0";
2301 return "ldw -4(%1),%R0\n\t{ldws|ldw},mb -8(%1),%0";
2304 else if (GET_CODE (addr) == PLUS
2305 && GET_CODE (XEXP (addr, 0)) == MULT)
2307 rtx high_reg = gen_rtx_SUBREG (SImode, operands[0], 0);
2309 if (!reg_overlap_mentioned_p (high_reg, addr))
2313 xoperands[0] = high_reg;
2314 xoperands[1] = XEXP (addr, 1);
2315 xoperands[2] = XEXP (XEXP (addr, 0), 0);
2316 xoperands[3] = XEXP (XEXP (addr, 0), 1);
2317 output_asm_insn ("{sh%O3addl %2,%1,%0|shladd,l %2,%O3,%1,%0}",
2319 return "ldw 4(%0),%R0\n\tldw 0(%0),%0";
2325 xoperands[0] = high_reg;
2326 xoperands[1] = XEXP (addr, 1);
2327 xoperands[2] = XEXP (XEXP (addr, 0), 0);
2328 xoperands[3] = XEXP (XEXP (addr, 0), 1);
2329 output_asm_insn ("{sh%O3addl %2,%1,%R0|shladd,l %2,%O3,%1,%R0}",
2331 return "ldw 0(%R0),%0\n\tldw 4(%R0),%R0";
2336 /* If an operand is an unoffsettable memory ref, find a register
2337 we can increment temporarily to make it refer to the second word. */
2339 if (optype0 == MEMOP)
2340 addreg0 = find_addr_reg (XEXP (operands[0], 0));
2342 if (optype1 == MEMOP)
2343 addreg1 = find_addr_reg (XEXP (operands[1], 0));
2345 /* Ok, we can do one word at a time.
2346 Normally we do the low-numbered word first.
2348 In either case, set up in LATEHALF the operands to use
2349 for the high-numbered word and in some cases alter the
2350 operands in OPERANDS to be suitable for the low-numbered word. */
2352 if (optype0 == REGOP)
2353 latehalf[0] = gen_rtx_REG (SImode, REGNO (operands[0]) + 1);
2354 else if (optype0 == OFFSOP)
2355 latehalf[0] = adjust_address (operands[0], SImode, 4);
2357 latehalf[0] = operands[0];
2359 if (optype1 == REGOP)
2360 latehalf[1] = gen_rtx_REG (SImode, REGNO (operands[1]) + 1);
2361 else if (optype1 == OFFSOP)
2362 latehalf[1] = adjust_address (operands[1], SImode, 4);
2363 else if (optype1 == CNSTOP)
2364 split_double (operands[1], &operands[1], &latehalf[1]);
2366 latehalf[1] = operands[1];
2368 /* If the first move would clobber the source of the second one,
2369 do them in the other order.
2371 This can happen in two cases:
2373 mem -> register where the first half of the destination register
2374 is the same register used in the memory's address. Reload
2375 can create such insns.
2377 mem in this case will be either register indirect or register
2378 indirect plus a valid offset.
2380 register -> register move where REGNO(dst) == REGNO(src + 1)
2381 someone (Tim/Tege?) claimed this can happen for parameter loads.
2383 Handle mem -> register case first. */
2384 if (optype0 == REGOP
2385 && (optype1 == MEMOP || optype1 == OFFSOP)
2386 && refers_to_regno_p (REGNO (operands[0]), REGNO (operands[0]) + 1,
2389 /* Do the late half first. */
2391 output_asm_insn ("ldo 4(%0),%0", &addreg1);
2392 output_asm_insn (singlemove_string (latehalf), latehalf);
2396 output_asm_insn ("ldo -4(%0),%0", &addreg1);
2397 return singlemove_string (operands);
2400 /* Now handle register -> register case. */
2401 if (optype0 == REGOP && optype1 == REGOP
2402 && REGNO (operands[0]) == REGNO (operands[1]) + 1)
2404 output_asm_insn (singlemove_string (latehalf), latehalf);
2405 return singlemove_string (operands);
2408 /* Normal case: do the two words, low-numbered first. */
2410 output_asm_insn (singlemove_string (operands), operands);
2412 /* Make any unoffsettable addresses point at high-numbered word. */
2414 output_asm_insn ("ldo 4(%0),%0", &addreg0);
2416 output_asm_insn ("ldo 4(%0),%0", &addreg1);
2419 output_asm_insn (singlemove_string (latehalf), latehalf);
2421 /* Undo the adds we just did. */
2423 output_asm_insn ("ldo -4(%0),%0", &addreg0);
2425 output_asm_insn ("ldo -4(%0),%0", &addreg1);
2431 output_fp_move_double (rtx *operands)
2433 if (FP_REG_P (operands[0]))
2435 if (FP_REG_P (operands[1])
2436 || operands[1] == CONST0_RTX (GET_MODE (operands[0])))
2437 output_asm_insn ("fcpy,dbl %f1,%0", operands);
2439 output_asm_insn ("fldd%F1 %1,%0", operands);
2441 else if (FP_REG_P (operands[1]))
2443 output_asm_insn ("fstd%F0 %1,%0", operands);
2449 gcc_assert (operands[1] == CONST0_RTX (GET_MODE (operands[0])));
2451 /* This is a pain. You have to be prepared to deal with an
2452 arbitrary address here including pre/post increment/decrement.
2454 so avoid this in the MD. */
2455 gcc_assert (GET_CODE (operands[0]) == REG);
2457 xoperands[1] = gen_rtx_REG (SImode, REGNO (operands[0]) + 1);
2458 xoperands[0] = operands[0];
2459 output_asm_insn ("copy %%r0,%0\n\tcopy %%r0,%1", xoperands);
2464 /* Return a REG that occurs in ADDR with coefficient 1.
2465 ADDR can be effectively incremented by incrementing REG. */
2468 find_addr_reg (rtx addr)
2470 while (GET_CODE (addr) == PLUS)
2472 if (GET_CODE (XEXP (addr, 0)) == REG)
2473 addr = XEXP (addr, 0);
2474 else if (GET_CODE (XEXP (addr, 1)) == REG)
2475 addr = XEXP (addr, 1);
2476 else if (CONSTANT_P (XEXP (addr, 0)))
2477 addr = XEXP (addr, 1);
2478 else if (CONSTANT_P (XEXP (addr, 1)))
2479 addr = XEXP (addr, 0);
2483 gcc_assert (GET_CODE (addr) == REG);
2487 /* Emit code to perform a block move.
2489 OPERANDS[0] is the destination pointer as a REG, clobbered.
2490 OPERANDS[1] is the source pointer as a REG, clobbered.
2491 OPERANDS[2] is a register for temporary storage.
2492 OPERANDS[3] is a register for temporary storage.
2493 OPERANDS[4] is the size as a CONST_INT
2494 OPERANDS[5] is the alignment safe to use, as a CONST_INT.
2495 OPERANDS[6] is another temporary register. */
2498 output_block_move (rtx *operands, int size_is_constant ATTRIBUTE_UNUSED)
2500 int align = INTVAL (operands[5]);
2501 unsigned long n_bytes = INTVAL (operands[4]);
2503 /* We can't move more than a word at a time because the PA
2504 has no longer integer move insns. (Could use fp mem ops?) */
2505 if (align > (TARGET_64BIT ? 8 : 4))
2506 align = (TARGET_64BIT ? 8 : 4);
2508 /* Note that we know each loop below will execute at least twice
2509 (else we would have open-coded the copy). */
2513 /* Pre-adjust the loop counter. */
2514 operands[4] = GEN_INT (n_bytes - 16);
2515 output_asm_insn ("ldi %4,%2", operands);
2518 output_asm_insn ("ldd,ma 8(%1),%3", operands);
2519 output_asm_insn ("ldd,ma 8(%1),%6", operands);
2520 output_asm_insn ("std,ma %3,8(%0)", operands);
2521 output_asm_insn ("addib,>= -16,%2,.-12", operands);
2522 output_asm_insn ("std,ma %6,8(%0)", operands);
2524 /* Handle the residual. There could be up to 7 bytes of
2525 residual to copy! */
2526 if (n_bytes % 16 != 0)
2528 operands[4] = GEN_INT (n_bytes % 8);
2529 if (n_bytes % 16 >= 8)
2530 output_asm_insn ("ldd,ma 8(%1),%3", operands);
2531 if (n_bytes % 8 != 0)
2532 output_asm_insn ("ldd 0(%1),%6", operands);
2533 if (n_bytes % 16 >= 8)
2534 output_asm_insn ("std,ma %3,8(%0)", operands);
2535 if (n_bytes % 8 != 0)
2536 output_asm_insn ("stdby,e %6,%4(%0)", operands);
2541 /* Pre-adjust the loop counter. */
2542 operands[4] = GEN_INT (n_bytes - 8);
2543 output_asm_insn ("ldi %4,%2", operands);
2546 output_asm_insn ("{ldws|ldw},ma 4(%1),%3", operands);
2547 output_asm_insn ("{ldws|ldw},ma 4(%1),%6", operands);
2548 output_asm_insn ("{stws|stw},ma %3,4(%0)", operands);
2549 output_asm_insn ("addib,>= -8,%2,.-12", operands);
2550 output_asm_insn ("{stws|stw},ma %6,4(%0)", operands);
2552 /* Handle the residual. There could be up to 7 bytes of
2553 residual to copy! */
2554 if (n_bytes % 8 != 0)
2556 operands[4] = GEN_INT (n_bytes % 4);
2557 if (n_bytes % 8 >= 4)
2558 output_asm_insn ("{ldws|ldw},ma 4(%1),%3", operands);
2559 if (n_bytes % 4 != 0)
2560 output_asm_insn ("ldw 0(%1),%6", operands);
2561 if (n_bytes % 8 >= 4)
2562 output_asm_insn ("{stws|stw},ma %3,4(%0)", operands);
2563 if (n_bytes % 4 != 0)
2564 output_asm_insn ("{stbys|stby},e %6,%4(%0)", operands);
2569 /* Pre-adjust the loop counter. */
2570 operands[4] = GEN_INT (n_bytes - 4);
2571 output_asm_insn ("ldi %4,%2", operands);
2574 output_asm_insn ("{ldhs|ldh},ma 2(%1),%3", operands);
2575 output_asm_insn ("{ldhs|ldh},ma 2(%1),%6", operands);
2576 output_asm_insn ("{sths|sth},ma %3,2(%0)", operands);
2577 output_asm_insn ("addib,>= -4,%2,.-12", operands);
2578 output_asm_insn ("{sths|sth},ma %6,2(%0)", operands);
2580 /* Handle the residual. */
2581 if (n_bytes % 4 != 0)
2583 if (n_bytes % 4 >= 2)
2584 output_asm_insn ("{ldhs|ldh},ma 2(%1),%3", operands);
2585 if (n_bytes % 2 != 0)
2586 output_asm_insn ("ldb 0(%1),%6", operands);
2587 if (n_bytes % 4 >= 2)
2588 output_asm_insn ("{sths|sth},ma %3,2(%0)", operands);
2589 if (n_bytes % 2 != 0)
2590 output_asm_insn ("stb %6,0(%0)", operands);
2595 /* Pre-adjust the loop counter. */
2596 operands[4] = GEN_INT (n_bytes - 2);
2597 output_asm_insn ("ldi %4,%2", operands);
2600 output_asm_insn ("{ldbs|ldb},ma 1(%1),%3", operands);
2601 output_asm_insn ("{ldbs|ldb},ma 1(%1),%6", operands);
2602 output_asm_insn ("{stbs|stb},ma %3,1(%0)", operands);
2603 output_asm_insn ("addib,>= -2,%2,.-12", operands);
2604 output_asm_insn ("{stbs|stb},ma %6,1(%0)", operands);
2606 /* Handle the residual. */
2607 if (n_bytes % 2 != 0)
2609 output_asm_insn ("ldb 0(%1),%3", operands);
2610 output_asm_insn ("stb %3,0(%0)", operands);
2619 /* Count the number of insns necessary to handle this block move.
2621 Basic structure is the same as emit_block_move, except that we
2622 count insns rather than emit them. */
2625 compute_movmem_length (rtx insn)
2627 rtx pat = PATTERN (insn);
2628 unsigned int align = INTVAL (XEXP (XVECEXP (pat, 0, 7), 0));
2629 unsigned long n_bytes = INTVAL (XEXP (XVECEXP (pat, 0, 6), 0));
2630 unsigned int n_insns = 0;
2632 /* We can't move more than four bytes at a time because the PA
2633 has no longer integer move insns. (Could use fp mem ops?) */
2634 if (align > (TARGET_64BIT ? 8 : 4))
2635 align = (TARGET_64BIT ? 8 : 4);
2637 /* The basic copying loop. */
2641 if (n_bytes % (2 * align) != 0)
2643 if ((n_bytes % (2 * align)) >= align)
2646 if ((n_bytes % align) != 0)
2650 /* Lengths are expressed in bytes now; each insn is 4 bytes. */
2654 /* Emit code to perform a block clear.
2656 OPERANDS[0] is the destination pointer as a REG, clobbered.
2657 OPERANDS[1] is a register for temporary storage.
2658 OPERANDS[2] is the size as a CONST_INT
2659 OPERANDS[3] is the alignment safe to use, as a CONST_INT. */
2662 output_block_clear (rtx *operands, int size_is_constant ATTRIBUTE_UNUSED)
2664 int align = INTVAL (operands[3]);
2665 unsigned long n_bytes = INTVAL (operands[2]);
2667 /* We can't clear more than a word at a time because the PA
2668 has no longer integer move insns. */
2669 if (align > (TARGET_64BIT ? 8 : 4))
2670 align = (TARGET_64BIT ? 8 : 4);
2672 /* Note that we know each loop below will execute at least twice
2673 (else we would have open-coded the copy). */
2677 /* Pre-adjust the loop counter. */
2678 operands[2] = GEN_INT (n_bytes - 16);
2679 output_asm_insn ("ldi %2,%1", operands);
2682 output_asm_insn ("std,ma %%r0,8(%0)", operands);
2683 output_asm_insn ("addib,>= -16,%1,.-4", operands);
2684 output_asm_insn ("std,ma %%r0,8(%0)", operands);
2686 /* Handle the residual. There could be up to 7 bytes of
2687 residual to copy! */
2688 if (n_bytes % 16 != 0)
2690 operands[2] = GEN_INT (n_bytes % 8);
2691 if (n_bytes % 16 >= 8)
2692 output_asm_insn ("std,ma %%r0,8(%0)", operands);
2693 if (n_bytes % 8 != 0)
2694 output_asm_insn ("stdby,e %%r0,%2(%0)", operands);
2699 /* Pre-adjust the loop counter. */
2700 operands[2] = GEN_INT (n_bytes - 8);
2701 output_asm_insn ("ldi %2,%1", operands);
2704 output_asm_insn ("{stws|stw},ma %%r0,4(%0)", operands);
2705 output_asm_insn ("addib,>= -8,%1,.-4", operands);
2706 output_asm_insn ("{stws|stw},ma %%r0,4(%0)", operands);
2708 /* Handle the residual. There could be up to 7 bytes of
2709 residual to copy! */
2710 if (n_bytes % 8 != 0)
2712 operands[2] = GEN_INT (n_bytes % 4);
2713 if (n_bytes % 8 >= 4)
2714 output_asm_insn ("{stws|stw},ma %%r0,4(%0)", operands);
2715 if (n_bytes % 4 != 0)
2716 output_asm_insn ("{stbys|stby},e %%r0,%2(%0)", operands);
2721 /* Pre-adjust the loop counter. */
2722 operands[2] = GEN_INT (n_bytes - 4);
2723 output_asm_insn ("ldi %2,%1", operands);
2726 output_asm_insn ("{sths|sth},ma %%r0,2(%0)", operands);
2727 output_asm_insn ("addib,>= -4,%1,.-4", operands);
2728 output_asm_insn ("{sths|sth},ma %%r0,2(%0)", operands);
2730 /* Handle the residual. */
2731 if (n_bytes % 4 != 0)
2733 if (n_bytes % 4 >= 2)
2734 output_asm_insn ("{sths|sth},ma %%r0,2(%0)", operands);
2735 if (n_bytes % 2 != 0)
2736 output_asm_insn ("stb %%r0,0(%0)", operands);
2741 /* Pre-adjust the loop counter. */
2742 operands[2] = GEN_INT (n_bytes - 2);
2743 output_asm_insn ("ldi %2,%1", operands);
2746 output_asm_insn ("{stbs|stb},ma %%r0,1(%0)", operands);
2747 output_asm_insn ("addib,>= -2,%1,.-4", operands);
2748 output_asm_insn ("{stbs|stb},ma %%r0,1(%0)", operands);
2750 /* Handle the residual. */
2751 if (n_bytes % 2 != 0)
2752 output_asm_insn ("stb %%r0,0(%0)", operands);
2761 /* Count the number of insns necessary to handle this block move.
2763 Basic structure is the same as emit_block_move, except that we
2764 count insns rather than emit them. */
2767 compute_clrmem_length (rtx insn)
2769 rtx pat = PATTERN (insn);
2770 unsigned int align = INTVAL (XEXP (XVECEXP (pat, 0, 4), 0));
2771 unsigned long n_bytes = INTVAL (XEXP (XVECEXP (pat, 0, 3), 0));
2772 unsigned int n_insns = 0;
2774 /* We can't clear more than a word at a time because the PA
2775 has no longer integer move insns. */
2776 if (align > (TARGET_64BIT ? 8 : 4))
2777 align = (TARGET_64BIT ? 8 : 4);
2779 /* The basic loop. */
2783 if (n_bytes % (2 * align) != 0)
2785 if ((n_bytes % (2 * align)) >= align)
2788 if ((n_bytes % align) != 0)
2792 /* Lengths are expressed in bytes now; each insn is 4 bytes. */
2798 output_and (rtx *operands)
2800 if (GET_CODE (operands[2]) == CONST_INT && INTVAL (operands[2]) != 0)
2802 unsigned HOST_WIDE_INT mask = INTVAL (operands[2]);
2803 int ls0, ls1, ms0, p, len;
2805 for (ls0 = 0; ls0 < 32; ls0++)
2806 if ((mask & (1 << ls0)) == 0)
2809 for (ls1 = ls0; ls1 < 32; ls1++)
2810 if ((mask & (1 << ls1)) != 0)
2813 for (ms0 = ls1; ms0 < 32; ms0++)
2814 if ((mask & (1 << ms0)) == 0)
2817 gcc_assert (ms0 == 32);
2825 operands[2] = GEN_INT (len);
2826 return "{extru|extrw,u} %1,31,%2,%0";
2830 /* We could use this `depi' for the case above as well, but `depi'
2831 requires one more register file access than an `extru'. */
2836 operands[2] = GEN_INT (p);
2837 operands[3] = GEN_INT (len);
2838 return "{depi|depwi} 0,%2,%3,%0";
2842 return "and %1,%2,%0";
2845 /* Return a string to perform a bitwise-and of operands[1] with operands[2]
2846 storing the result in operands[0]. */
2848 output_64bit_and (rtx *operands)
2850 if (GET_CODE (operands[2]) == CONST_INT && INTVAL (operands[2]) != 0)
2852 unsigned HOST_WIDE_INT mask = INTVAL (operands[2]);
2853 int ls0, ls1, ms0, p, len;
2855 for (ls0 = 0; ls0 < HOST_BITS_PER_WIDE_INT; ls0++)
2856 if ((mask & ((unsigned HOST_WIDE_INT) 1 << ls0)) == 0)
2859 for (ls1 = ls0; ls1 < HOST_BITS_PER_WIDE_INT; ls1++)
2860 if ((mask & ((unsigned HOST_WIDE_INT) 1 << ls1)) != 0)
2863 for (ms0 = ls1; ms0 < HOST_BITS_PER_WIDE_INT; ms0++)
2864 if ((mask & ((unsigned HOST_WIDE_INT) 1 << ms0)) == 0)
2867 gcc_assert (ms0 == HOST_BITS_PER_WIDE_INT);
2869 if (ls1 == HOST_BITS_PER_WIDE_INT)
2875 operands[2] = GEN_INT (len);
2876 return "extrd,u %1,63,%2,%0";
2880 /* We could use this `depi' for the case above as well, but `depi'
2881 requires one more register file access than an `extru'. */
2886 operands[2] = GEN_INT (p);
2887 operands[3] = GEN_INT (len);
2888 return "depdi 0,%2,%3,%0";
2892 return "and %1,%2,%0";
2896 output_ior (rtx *operands)
2898 unsigned HOST_WIDE_INT mask = INTVAL (operands[2]);
2899 int bs0, bs1, p, len;
2901 if (INTVAL (operands[2]) == 0)
2902 return "copy %1,%0";
2904 for (bs0 = 0; bs0 < 32; bs0++)
2905 if ((mask & (1 << bs0)) != 0)
2908 for (bs1 = bs0; bs1 < 32; bs1++)
2909 if ((mask & (1 << bs1)) == 0)
2912 gcc_assert (bs1 == 32 || ((unsigned HOST_WIDE_INT) 1 << bs1) > mask);
2917 operands[2] = GEN_INT (p);
2918 operands[3] = GEN_INT (len);
2919 return "{depi|depwi} -1,%2,%3,%0";
2922 /* Return a string to perform a bitwise-and of operands[1] with operands[2]
2923 storing the result in operands[0]. */
2925 output_64bit_ior (rtx *operands)
2927 unsigned HOST_WIDE_INT mask = INTVAL (operands[2]);
2928 int bs0, bs1, p, len;
2930 if (INTVAL (operands[2]) == 0)
2931 return "copy %1,%0";
2933 for (bs0 = 0; bs0 < HOST_BITS_PER_WIDE_INT; bs0++)
2934 if ((mask & ((unsigned HOST_WIDE_INT) 1 << bs0)) != 0)
2937 for (bs1 = bs0; bs1 < HOST_BITS_PER_WIDE_INT; bs1++)
2938 if ((mask & ((unsigned HOST_WIDE_INT) 1 << bs1)) == 0)
2941 gcc_assert (bs1 == HOST_BITS_PER_WIDE_INT
2942 || ((unsigned HOST_WIDE_INT) 1 << bs1) > mask);
2947 operands[2] = GEN_INT (p);
2948 operands[3] = GEN_INT (len);
2949 return "depdi -1,%2,%3,%0";
2952 /* Target hook for assembling integer objects. This code handles
2953 aligned SI and DI integers specially since function references
2954 must be preceded by P%. */
2957 pa_assemble_integer (rtx x, unsigned int size, int aligned_p)
2959 if (size == UNITS_PER_WORD
2961 && function_label_operand (x, VOIDmode))
2963 fputs (size == 8? "\t.dword\tP%" : "\t.word\tP%", asm_out_file);
2964 output_addr_const (asm_out_file, x);
2965 fputc ('\n', asm_out_file);
2968 return default_assemble_integer (x, size, aligned_p);
2971 /* Output an ascii string. */
2973 output_ascii (FILE *file, const char *p, int size)
2977 unsigned char partial_output[16]; /* Max space 4 chars can occupy. */
2979 /* The HP assembler can only take strings of 256 characters at one
2980 time. This is a limitation on input line length, *not* the
2981 length of the string. Sigh. Even worse, it seems that the
2982 restriction is in number of input characters (see \xnn &
2983 \whatever). So we have to do this very carefully. */
2985 fputs ("\t.STRING \"", file);
2988 for (i = 0; i < size; i += 4)
2992 for (io = 0, co = 0; io < MIN (4, size - i); io++)
2994 register unsigned int c = (unsigned char) p[i + io];
2996 if (c == '\"' || c == '\\')
2997 partial_output[co++] = '\\';
2998 if (c >= ' ' && c < 0177)
2999 partial_output[co++] = c;
3003 partial_output[co++] = '\\';
3004 partial_output[co++] = 'x';
3005 hexd = c / 16 - 0 + '0';
3007 hexd -= '9' - 'a' + 1;
3008 partial_output[co++] = hexd;
3009 hexd = c % 16 - 0 + '0';
3011 hexd -= '9' - 'a' + 1;
3012 partial_output[co++] = hexd;
3015 if (chars_output + co > 243)
3017 fputs ("\"\n\t.STRING \"", file);
3020 fwrite (partial_output, 1, (size_t) co, file);
3024 fputs ("\"\n", file);
3027 /* Try to rewrite floating point comparisons & branches to avoid
3028 useless add,tr insns.
3030 CHECK_NOTES is nonzero if we should examine REG_DEAD notes
3031 to see if FPCC is dead. CHECK_NOTES is nonzero for the
3032 first attempt to remove useless add,tr insns. It is zero
3033 for the second pass as reorg sometimes leaves bogus REG_DEAD
3036 When CHECK_NOTES is zero we can only eliminate add,tr insns
3037 when there's a 1:1 correspondence between fcmp and ftest/fbranch
3040 remove_useless_addtr_insns (int check_notes)
3043 static int pass = 0;
3045 /* This is fairly cheap, so always run it when optimizing. */
3049 int fbranch_count = 0;
3051 /* Walk all the insns in this function looking for fcmp & fbranch
3052 instructions. Keep track of how many of each we find. */
3053 for (insn = get_insns (); insn; insn = next_insn (insn))
3057 /* Ignore anything that isn't an INSN or a JUMP_INSN. */
3058 if (GET_CODE (insn) != INSN && GET_CODE (insn) != JUMP_INSN)
3061 tmp = PATTERN (insn);
3063 /* It must be a set. */
3064 if (GET_CODE (tmp) != SET)
3067 /* If the destination is CCFP, then we've found an fcmp insn. */
3068 tmp = SET_DEST (tmp);
3069 if (GET_CODE (tmp) == REG && REGNO (tmp) == 0)
3075 tmp = PATTERN (insn);
3076 /* If this is an fbranch instruction, bump the fbranch counter. */
3077 if (GET_CODE (tmp) == SET
3078 && SET_DEST (tmp) == pc_rtx
3079 && GET_CODE (SET_SRC (tmp)) == IF_THEN_ELSE
3080 && GET_CODE (XEXP (SET_SRC (tmp), 0)) == NE
3081 && GET_CODE (XEXP (XEXP (SET_SRC (tmp), 0), 0)) == REG
3082 && REGNO (XEXP (XEXP (SET_SRC (tmp), 0), 0)) == 0)
3090 /* Find all floating point compare + branch insns. If possible,
3091 reverse the comparison & the branch to avoid add,tr insns. */
3092 for (insn = get_insns (); insn; insn = next_insn (insn))
3096 /* Ignore anything that isn't an INSN. */
3097 if (GET_CODE (insn) != INSN)
3100 tmp = PATTERN (insn);
3102 /* It must be a set. */
3103 if (GET_CODE (tmp) != SET)
3106 /* The destination must be CCFP, which is register zero. */
3107 tmp = SET_DEST (tmp);
3108 if (GET_CODE (tmp) != REG || REGNO (tmp) != 0)
3111 /* INSN should be a set of CCFP.
3113 See if the result of this insn is used in a reversed FP
3114 conditional branch. If so, reverse our condition and
3115 the branch. Doing so avoids useless add,tr insns. */
3116 next = next_insn (insn);
3119 /* Jumps, calls and labels stop our search. */
3120 if (GET_CODE (next) == JUMP_INSN
3121 || GET_CODE (next) == CALL_INSN
3122 || GET_CODE (next) == CODE_LABEL)
3125 /* As does another fcmp insn. */
3126 if (GET_CODE (next) == INSN
3127 && GET_CODE (PATTERN (next)) == SET
3128 && GET_CODE (SET_DEST (PATTERN (next))) == REG
3129 && REGNO (SET_DEST (PATTERN (next))) == 0)
3132 next = next_insn (next);
3135 /* Is NEXT_INSN a branch? */
3137 && GET_CODE (next) == JUMP_INSN)
3139 rtx pattern = PATTERN (next);
3141 /* If it a reversed fp conditional branch (e.g. uses add,tr)
3142 and CCFP dies, then reverse our conditional and the branch
3143 to avoid the add,tr. */
3144 if (GET_CODE (pattern) == SET
3145 && SET_DEST (pattern) == pc_rtx
3146 && GET_CODE (SET_SRC (pattern)) == IF_THEN_ELSE
3147 && GET_CODE (XEXP (SET_SRC (pattern), 0)) == NE
3148 && GET_CODE (XEXP (XEXP (SET_SRC (pattern), 0), 0)) == REG
3149 && REGNO (XEXP (XEXP (SET_SRC (pattern), 0), 0)) == 0
3150 && GET_CODE (XEXP (SET_SRC (pattern), 1)) == PC
3151 && (fcmp_count == fbranch_count
3153 && find_regno_note (next, REG_DEAD, 0))))
3155 /* Reverse the branch. */
3156 tmp = XEXP (SET_SRC (pattern), 1);
3157 XEXP (SET_SRC (pattern), 1) = XEXP (SET_SRC (pattern), 2);
3158 XEXP (SET_SRC (pattern), 2) = tmp;
3159 INSN_CODE (next) = -1;
3161 /* Reverse our condition. */
3162 tmp = PATTERN (insn);
3163 PUT_CODE (XEXP (tmp, 1),
3164 (reverse_condition_maybe_unordered
3165 (GET_CODE (XEXP (tmp, 1)))));
3175 /* You may have trouble believing this, but this is the 32 bit HP-PA
3180 Variable arguments (optional; any number may be allocated)
3182 SP-(4*(N+9)) arg word N
3187 Fixed arguments (must be allocated; may remain unused)
3196 SP-32 External Data Pointer (DP)
3198 SP-24 External/stub RP (RP')
3202 SP-8 Calling Stub RP (RP'')
3207 SP-0 Stack Pointer (points to next available address)
3211 /* This function saves registers as follows. Registers marked with ' are
3212 this function's registers (as opposed to the previous function's).
3213 If a frame_pointer isn't needed, r4 is saved as a general register;
3214 the space for the frame pointer is still allocated, though, to keep
3220 SP (FP') Previous FP
3221 SP + 4 Alignment filler (sigh)
3222 SP + 8 Space for locals reserved here.
3226 SP + n All call saved register used.
3230 SP + o All call saved fp registers used.
3234 SP + p (SP') points to next available address.
3238 /* Global variables set by output_function_prologue(). */
3239 /* Size of frame. Need to know this to emit return insns from
3241 static HOST_WIDE_INT actual_fsize, local_fsize;
3242 static int save_fregs;
3244 /* Emit RTL to store REG at the memory location specified by BASE+DISP.
3245 Handle case where DISP > 8k by using the add_high_const patterns.
3247 Note in DISP > 8k case, we will leave the high part of the address
3248 in %r1. There is code in expand_hppa_{prologue,epilogue} that knows this.*/
3251 store_reg (int reg, HOST_WIDE_INT disp, int base)
3253 rtx insn, dest, src, basereg;
3255 src = gen_rtx_REG (word_mode, reg);
3256 basereg = gen_rtx_REG (Pmode, base);
3257 if (VAL_14_BITS_P (disp))
3259 dest = gen_rtx_MEM (word_mode, plus_constant (basereg, disp));
3260 insn = emit_move_insn (dest, src);
3262 else if (TARGET_64BIT && !VAL_32_BITS_P (disp))
3264 rtx delta = GEN_INT (disp);
3265 rtx tmpreg = gen_rtx_REG (Pmode, 1);
3267 emit_move_insn (tmpreg, delta);
3268 emit_move_insn (tmpreg, gen_rtx_PLUS (Pmode, tmpreg, basereg));
3269 dest = gen_rtx_MEM (word_mode, tmpreg);
3270 insn = emit_move_insn (dest, src);
3274 = gen_rtx_EXPR_LIST (REG_FRAME_RELATED_EXPR,
3275 gen_rtx_SET (VOIDmode,
3276 gen_rtx_MEM (word_mode,
3277 gen_rtx_PLUS (word_mode, basereg,
3285 rtx delta = GEN_INT (disp);
3286 rtx high = gen_rtx_PLUS (Pmode, basereg, gen_rtx_HIGH (Pmode, delta));
3287 rtx tmpreg = gen_rtx_REG (Pmode, 1);
3289 emit_move_insn (tmpreg, high);
3290 dest = gen_rtx_MEM (word_mode, gen_rtx_LO_SUM (Pmode, tmpreg, delta));
3291 insn = emit_move_insn (dest, src);
3295 = gen_rtx_EXPR_LIST (REG_FRAME_RELATED_EXPR,
3296 gen_rtx_SET (VOIDmode,
3297 gen_rtx_MEM (word_mode,
3298 gen_rtx_PLUS (word_mode, basereg,
3306 RTX_FRAME_RELATED_P (insn) = 1;
3309 /* Emit RTL to store REG at the memory location specified by BASE and then
3310 add MOD to BASE. MOD must be <= 8k. */
3313 store_reg_modify (int base, int reg, HOST_WIDE_INT mod)
3315 rtx insn, basereg, srcreg, delta;
3317 gcc_assert (VAL_14_BITS_P (mod));
3319 basereg = gen_rtx_REG (Pmode, base);
3320 srcreg = gen_rtx_REG (word_mode, reg);
3321 delta = GEN_INT (mod);
3323 insn = emit_insn (gen_post_store (basereg, srcreg, delta));
3326 RTX_FRAME_RELATED_P (insn) = 1;
3328 /* RTX_FRAME_RELATED_P must be set on each frame related set
3329 in a parallel with more than one element. Don't set
3330 RTX_FRAME_RELATED_P in the first set if reg is temporary
3331 register 1. The effect of this operation is recorded in
3332 the initial copy. */
3335 RTX_FRAME_RELATED_P (XVECEXP (PATTERN (insn), 0, 0)) = 1;
3336 RTX_FRAME_RELATED_P (XVECEXP (PATTERN (insn), 0, 1)) = 1;
3340 /* The first element of a PARALLEL is always processed if it is
3341 a SET. Thus, we need an expression list for this case. */
3343 = gen_rtx_EXPR_LIST (REG_FRAME_RELATED_EXPR,
3344 gen_rtx_SET (VOIDmode, basereg,
3345 gen_rtx_PLUS (word_mode, basereg, delta)),
3351 /* Emit RTL to set REG to the value specified by BASE+DISP. Handle case
3352 where DISP > 8k by using the add_high_const patterns. NOTE indicates
3353 whether to add a frame note or not.
3355 In the DISP > 8k case, we leave the high part of the address in %r1.
3356 There is code in expand_hppa_{prologue,epilogue} that knows about this. */
3359 set_reg_plus_d (int reg, int base, HOST_WIDE_INT disp, int note)
3363 if (VAL_14_BITS_P (disp))
3365 insn = emit_move_insn (gen_rtx_REG (Pmode, reg),
3366 plus_constant (gen_rtx_REG (Pmode, base), disp));
3368 else if (TARGET_64BIT && !VAL_32_BITS_P (disp))
3370 rtx basereg = gen_rtx_REG (Pmode, base);
3371 rtx delta = GEN_INT (disp);
3372 rtx tmpreg = gen_rtx_REG (Pmode, 1);
3374 emit_move_insn (tmpreg, delta);
3375 insn = emit_move_insn (gen_rtx_REG (Pmode, reg),
3376 gen_rtx_PLUS (Pmode, tmpreg, basereg));
3380 rtx basereg = gen_rtx_REG (Pmode, base);
3381 rtx delta = GEN_INT (disp);
3382 rtx tmpreg = gen_rtx_REG (Pmode, 1);
3384 emit_move_insn (tmpreg,
3385 gen_rtx_PLUS (Pmode, basereg,
3386 gen_rtx_HIGH (Pmode, delta)));
3387 insn = emit_move_insn (gen_rtx_REG (Pmode, reg),
3388 gen_rtx_LO_SUM (Pmode, tmpreg, delta));
3391 if (DO_FRAME_NOTES && note)
3392 RTX_FRAME_RELATED_P (insn) = 1;
3396 compute_frame_size (HOST_WIDE_INT size, int *fregs_live)
3401 /* The code in hppa_expand_prologue and hppa_expand_epilogue must
3402 be consistent with the rounding and size calculation done here.
3403 Change them at the same time. */
3405 /* We do our own stack alignment. First, round the size of the
3406 stack locals up to a word boundary. */
3407 size = (size + UNITS_PER_WORD - 1) & ~(UNITS_PER_WORD - 1);
3409 /* Space for previous frame pointer + filler. If any frame is
3410 allocated, we need to add in the STARTING_FRAME_OFFSET. We
3411 waste some space here for the sake of HP compatibility. The
3412 first slot is only used when the frame pointer is needed. */
3413 if (size || frame_pointer_needed)
3414 size += STARTING_FRAME_OFFSET;
3416 /* If the current function calls __builtin_eh_return, then we need
3417 to allocate stack space for registers that will hold data for
3418 the exception handler. */
3419 if (DO_FRAME_NOTES && current_function_calls_eh_return)
3423 for (i = 0; EH_RETURN_DATA_REGNO (i) != INVALID_REGNUM; ++i)
3425 size += i * UNITS_PER_WORD;
3428 /* Account for space used by the callee general register saves. */
3429 for (i = 18, j = frame_pointer_needed ? 4 : 3; i >= j; i--)
3430 if (regs_ever_live[i])
3431 size += UNITS_PER_WORD;
3433 /* Account for space used by the callee floating point register saves. */
3434 for (i = FP_SAVED_REG_LAST; i >= FP_SAVED_REG_FIRST; i -= FP_REG_STEP)
3435 if (regs_ever_live[i]
3436 || (!TARGET_64BIT && regs_ever_live[i + 1]))
3440 /* We always save both halves of the FP register, so always
3441 increment the frame size by 8 bytes. */
3445 /* If any of the floating registers are saved, account for the
3446 alignment needed for the floating point register save block. */
3449 size = (size + 7) & ~7;
3454 /* The various ABIs include space for the outgoing parameters in the
3455 size of the current function's stack frame. We don't need to align
3456 for the outgoing arguments as their alignment is set by the final
3457 rounding for the frame as a whole. */
3458 size += current_function_outgoing_args_size;
3460 /* Allocate space for the fixed frame marker. This space must be
3461 allocated for any function that makes calls or allocates
3463 if (!current_function_is_leaf || size)
3464 size += TARGET_64BIT ? 48 : 32;
3466 /* Finally, round to the preferred stack boundary. */
3467 return ((size + PREFERRED_STACK_BOUNDARY / BITS_PER_UNIT - 1)
3468 & ~(PREFERRED_STACK_BOUNDARY / BITS_PER_UNIT - 1));
3471 /* Generate the assembly code for function entry. FILE is a stdio
3472 stream to output the code to. SIZE is an int: how many units of
3473 temporary storage to allocate.
3475 Refer to the array `regs_ever_live' to determine which registers to
3476 save; `regs_ever_live[I]' is nonzero if register number I is ever
3477 used in the function. This function is responsible for knowing
3478 which registers should not be saved even if used. */
3480 /* On HP-PA, move-double insns between fpu and cpu need an 8-byte block
3481 of memory. If any fpu reg is used in the function, we allocate
3482 such a block here, at the bottom of the frame, just in case it's needed.
3484 If this function is a leaf procedure, then we may choose not
3485 to do a "save" insn. The decision about whether or not
3486 to do this is made in regclass.c. */
3489 pa_output_function_prologue (FILE *file, HOST_WIDE_INT size ATTRIBUTE_UNUSED)
3491 /* The function's label and associated .PROC must never be
3492 separated and must be output *after* any profiling declarations
3493 to avoid changing spaces/subspaces within a procedure. */
3494 ASM_OUTPUT_LABEL (file, XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0));
3495 fputs ("\t.PROC\n", file);
3497 /* hppa_expand_prologue does the dirty work now. We just need
3498 to output the assembler directives which denote the start
3500 fprintf (file, "\t.CALLINFO FRAME=" HOST_WIDE_INT_PRINT_DEC, actual_fsize);
3501 if (regs_ever_live[2])
3502 fputs (",CALLS,SAVE_RP", file);
3504 fputs (",NO_CALLS", file);
3506 /* The SAVE_SP flag is used to indicate that register %r3 is stored
3507 at the beginning of the frame and that it is used as the frame
3508 pointer for the frame. We do this because our current frame
3509 layout doesn't conform to that specified in the HP runtime
3510 documentation and we need a way to indicate to programs such as
3511 GDB where %r3 is saved. The SAVE_SP flag was chosen because it
3512 isn't used by HP compilers but is supported by the assembler.
3513 However, SAVE_SP is supposed to indicate that the previous stack
3514 pointer has been saved in the frame marker. */
3515 if (frame_pointer_needed)
3516 fputs (",SAVE_SP", file);
3518 /* Pass on information about the number of callee register saves
3519 performed in the prologue.
3521 The compiler is supposed to pass the highest register number
3522 saved, the assembler then has to adjust that number before
3523 entering it into the unwind descriptor (to account for any
3524 caller saved registers with lower register numbers than the
3525 first callee saved register). */
3527 fprintf (file, ",ENTRY_GR=%d", gr_saved + 2);
3530 fprintf (file, ",ENTRY_FR=%d", fr_saved + 11);
3532 fputs ("\n\t.ENTRY\n", file);
3534 remove_useless_addtr_insns (0);
3538 hppa_expand_prologue (void)
3540 int merge_sp_adjust_with_store = 0;
3541 HOST_WIDE_INT size = get_frame_size ();
3542 HOST_WIDE_INT offset;
3550 /* Compute total size for frame pointer, filler, locals and rounding to
3551 the next word boundary. Similar code appears in compute_frame_size
3552 and must be changed in tandem with this code. */
3553 local_fsize = (size + UNITS_PER_WORD - 1) & ~(UNITS_PER_WORD - 1);
3554 if (local_fsize || frame_pointer_needed)
3555 local_fsize += STARTING_FRAME_OFFSET;
3557 actual_fsize = compute_frame_size (size, &save_fregs);
3559 /* Compute a few things we will use often. */
3560 tmpreg = gen_rtx_REG (word_mode, 1);
3562 /* Save RP first. The calling conventions manual states RP will
3563 always be stored into the caller's frame at sp - 20 or sp - 16
3564 depending on which ABI is in use. */
3565 if (regs_ever_live[2] || current_function_calls_eh_return)
3566 store_reg (2, TARGET_64BIT ? -16 : -20, STACK_POINTER_REGNUM);
3568 /* Allocate the local frame and set up the frame pointer if needed. */
3569 if (actual_fsize != 0)
3571 if (frame_pointer_needed)
3573 /* Copy the old frame pointer temporarily into %r1. Set up the
3574 new stack pointer, then store away the saved old frame pointer
3575 into the stack at sp and at the same time update the stack
3576 pointer by actual_fsize bytes. Two versions, first
3577 handles small (<8k) frames. The second handles large (>=8k)
3579 insn = emit_move_insn (tmpreg, frame_pointer_rtx);
3582 /* We need to record the frame pointer save here since the
3583 new frame pointer is set in the following insn. */
3584 RTX_FRAME_RELATED_P (insn) = 1;
3586 = gen_rtx_EXPR_LIST (REG_FRAME_RELATED_EXPR,
3587 gen_rtx_SET (VOIDmode,
3588 gen_rtx_MEM (word_mode, stack_pointer_rtx),
3593 insn = emit_move_insn (frame_pointer_rtx, stack_pointer_rtx);
3595 RTX_FRAME_RELATED_P (insn) = 1;
3597 if (VAL_14_BITS_P (actual_fsize))
3598 store_reg_modify (STACK_POINTER_REGNUM, 1, actual_fsize);
3601 /* It is incorrect to store the saved frame pointer at *sp,
3602 then increment sp (writes beyond the current stack boundary).
3604 So instead use stwm to store at *sp and post-increment the
3605 stack pointer as an atomic operation. Then increment sp to
3606 finish allocating the new frame. */
3607 HOST_WIDE_INT adjust1 = 8192 - 64;
3608 HOST_WIDE_INT adjust2 = actual_fsize - adjust1;
3610 store_reg_modify (STACK_POINTER_REGNUM, 1, adjust1);
3611 set_reg_plus_d (STACK_POINTER_REGNUM, STACK_POINTER_REGNUM,
3615 /* We set SAVE_SP in frames that need a frame pointer. Thus,
3616 we need to store the previous stack pointer (frame pointer)
3617 into the frame marker on targets that use the HP unwind
3618 library. This allows the HP unwind library to be used to
3619 unwind GCC frames. However, we are not fully compatible
3620 with the HP library because our frame layout differs from
3621 that specified in the HP runtime specification.
3623 We don't want a frame note on this instruction as the frame
3624 marker moves during dynamic stack allocation.
3626 This instruction also serves as a blockage to prevent
3627 register spills from being scheduled before the stack
3628 pointer is raised. This is necessary as we store
3629 registers using the frame pointer as a base register,
3630 and the frame pointer is set before sp is raised. */
3631 if (TARGET_HPUX_UNWIND_LIBRARY)
3633 rtx addr = gen_rtx_PLUS (word_mode, stack_pointer_rtx,
3634 GEN_INT (TARGET_64BIT ? -8 : -4));
3636 emit_move_insn (gen_rtx_MEM (word_mode, addr),
3640 emit_insn (gen_blockage ());
3642 /* no frame pointer needed. */
3645 /* In some cases we can perform the first callee register save
3646 and allocating the stack frame at the same time. If so, just
3647 make a note of it and defer allocating the frame until saving
3648 the callee registers. */
3649 if (VAL_14_BITS_P (actual_fsize) && local_fsize == 0)
3650 merge_sp_adjust_with_store = 1;
3651 /* Can not optimize. Adjust the stack frame by actual_fsize
3654 set_reg_plus_d (STACK_POINTER_REGNUM, STACK_POINTER_REGNUM,
3659 /* Normal register save.
3661 Do not save the frame pointer in the frame_pointer_needed case. It
3662 was done earlier. */
3663 if (frame_pointer_needed)
3665 offset = local_fsize;
3667 /* Saving the EH return data registers in the frame is the simplest
3668 way to get the frame unwind information emitted. We put them
3669 just before the general registers. */
3670 if (DO_FRAME_NOTES && current_function_calls_eh_return)
3672 unsigned int i, regno;
3676 regno = EH_RETURN_DATA_REGNO (i);
3677 if (regno == INVALID_REGNUM)
3680 store_reg (regno, offset, FRAME_POINTER_REGNUM);
3681 offset += UNITS_PER_WORD;
3685 for (i = 18; i >= 4; i--)
3686 if (regs_ever_live[i] && ! call_used_regs[i])
3688 store_reg (i, offset, FRAME_POINTER_REGNUM);
3689 offset += UNITS_PER_WORD;
3692 /* Account for %r3 which is saved in a special place. */
3695 /* No frame pointer needed. */
3698 offset = local_fsize - actual_fsize;
3700 /* Saving the EH return data registers in the frame is the simplest
3701 way to get the frame unwind information emitted. */
3702 if (DO_FRAME_NOTES && current_function_calls_eh_return)
3704 unsigned int i, regno;
3708 regno = EH_RETURN_DATA_REGNO (i);
3709 if (regno == INVALID_REGNUM)
3712 /* If merge_sp_adjust_with_store is nonzero, then we can
3713 optimize the first save. */
3714 if (merge_sp_adjust_with_store)
3716 store_reg_modify (STACK_POINTER_REGNUM, regno, -offset);
3717 merge_sp_adjust_with_store = 0;
3720 store_reg (regno, offset, STACK_POINTER_REGNUM);
3721 offset += UNITS_PER_WORD;
3725 for (i = 18; i >= 3; i--)
3726 if (regs_ever_live[i] && ! call_used_regs[i])
3728 /* If merge_sp_adjust_with_store is nonzero, then we can
3729 optimize the first GR save. */
3730 if (merge_sp_adjust_with_store)
3732 store_reg_modify (STACK_POINTER_REGNUM, i, -offset);
3733 merge_sp_adjust_with_store = 0;
3736 store_reg (i, offset, STACK_POINTER_REGNUM);
3737 offset += UNITS_PER_WORD;
3741 /* If we wanted to merge the SP adjustment with a GR save, but we never
3742 did any GR saves, then just emit the adjustment here. */
3743 if (merge_sp_adjust_with_store)
3744 set_reg_plus_d (STACK_POINTER_REGNUM, STACK_POINTER_REGNUM,
3748 /* The hppa calling conventions say that %r19, the pic offset
3749 register, is saved at sp - 32 (in this function's frame)
3750 when generating PIC code. FIXME: What is the correct thing
3751 to do for functions which make no calls and allocate no
3752 frame? Do we need to allocate a frame, or can we just omit
3753 the save? For now we'll just omit the save.
3755 We don't want a note on this insn as the frame marker can
3756 move if there is a dynamic stack allocation. */
3757 if (flag_pic && actual_fsize != 0 && !TARGET_64BIT)
3759 rtx addr = gen_rtx_PLUS (word_mode, stack_pointer_rtx, GEN_INT (-32));
3761 emit_move_insn (gen_rtx_MEM (word_mode, addr), pic_offset_table_rtx);
3765 /* Align pointer properly (doubleword boundary). */
3766 offset = (offset + 7) & ~7;
3768 /* Floating point register store. */
3773 /* First get the frame or stack pointer to the start of the FP register
3775 if (frame_pointer_needed)
3777 set_reg_plus_d (1, FRAME_POINTER_REGNUM, offset, 0);
3778 base = frame_pointer_rtx;
3782 set_reg_plus_d (1, STACK_POINTER_REGNUM, offset, 0);
3783 base = stack_pointer_rtx;
3786 /* Now actually save the FP registers. */
3787 for (i = FP_SAVED_REG_LAST; i >= FP_SAVED_REG_FIRST; i -= FP_REG_STEP)
3789 if (regs_ever_live[i]
3790 || (! TARGET_64BIT && regs_ever_live[i + 1]))
3792 rtx addr, insn, reg;
3793 addr = gen_rtx_MEM (DFmode, gen_rtx_POST_INC (DFmode, tmpreg));
3794 reg = gen_rtx_REG (DFmode, i);
3795 insn = emit_move_insn (addr, reg);
3798 RTX_FRAME_RELATED_P (insn) = 1;
3801 rtx mem = gen_rtx_MEM (DFmode,
3802 plus_constant (base, offset));
3804 = gen_rtx_EXPR_LIST (REG_FRAME_RELATED_EXPR,
3805 gen_rtx_SET (VOIDmode, mem, reg),
3810 rtx meml = gen_rtx_MEM (SFmode,
3811 plus_constant (base, offset));
3812 rtx memr = gen_rtx_MEM (SFmode,
3813 plus_constant (base, offset + 4));
3814 rtx regl = gen_rtx_REG (SFmode, i);
3815 rtx regr = gen_rtx_REG (SFmode, i + 1);
3816 rtx setl = gen_rtx_SET (VOIDmode, meml, regl);
3817 rtx setr = gen_rtx_SET (VOIDmode, memr, regr);
3820 RTX_FRAME_RELATED_P (setl) = 1;
3821 RTX_FRAME_RELATED_P (setr) = 1;
3822 vec = gen_rtvec (2, setl, setr);
3824 = gen_rtx_EXPR_LIST (REG_FRAME_RELATED_EXPR,
3825 gen_rtx_SEQUENCE (VOIDmode, vec),
3829 offset += GET_MODE_SIZE (DFmode);
3836 /* Emit RTL to load REG from the memory location specified by BASE+DISP.
3837 Handle case where DISP > 8k by using the add_high_const patterns. */
3840 load_reg (int reg, HOST_WIDE_INT disp, int base)
3842 rtx dest = gen_rtx_REG (word_mode, reg);
3843 rtx basereg = gen_rtx_REG (Pmode, base);
3846 if (VAL_14_BITS_P (disp))
3847 src = gen_rtx_MEM (word_mode, plus_constant (basereg, disp));
3848 else if (TARGET_64BIT && !VAL_32_BITS_P (disp))
3850 rtx delta = GEN_INT (disp);
3851 rtx tmpreg = gen_rtx_REG (Pmode, 1);
3853 emit_move_insn (tmpreg, delta);
3854 if (TARGET_DISABLE_INDEXING)
3856 emit_move_insn (tmpreg, gen_rtx_PLUS (Pmode, tmpreg, basereg));
3857 src = gen_rtx_MEM (word_mode, tmpreg);
3860 src = gen_rtx_MEM (word_mode, gen_rtx_PLUS (Pmode, tmpreg, basereg));
3864 rtx delta = GEN_INT (disp);
3865 rtx high = gen_rtx_PLUS (Pmode, basereg, gen_rtx_HIGH (Pmode, delta));
3866 rtx tmpreg = gen_rtx_REG (Pmode, 1);
3868 emit_move_insn (tmpreg, high);
3869 src = gen_rtx_MEM (word_mode, gen_rtx_LO_SUM (Pmode, tmpreg, delta));
3872 emit_move_insn (dest, src);
3875 /* Update the total code bytes output to the text section. */
3878 update_total_code_bytes (int nbytes)
3880 if ((TARGET_PORTABLE_RUNTIME || !TARGET_GAS || !TARGET_SOM)
3881 && !IN_NAMED_SECTION_P (cfun->decl))
3883 if (INSN_ADDRESSES_SET_P ())
3885 unsigned long old_total = total_code_bytes;
3887 total_code_bytes += nbytes;
3889 /* Be prepared to handle overflows. */
3890 if (old_total > total_code_bytes)
3891 total_code_bytes = -1;
3894 total_code_bytes = -1;
3898 /* This function generates the assembly code for function exit.
3899 Args are as for output_function_prologue ().
3901 The function epilogue should not depend on the current stack
3902 pointer! It should use the frame pointer only. This is mandatory
3903 because of alloca; we also take advantage of it to omit stack
3904 adjustments before returning. */
3907 pa_output_function_epilogue (FILE *file, HOST_WIDE_INT size ATTRIBUTE_UNUSED)
3909 rtx insn = get_last_insn ();
3913 /* hppa_expand_epilogue does the dirty work now. We just need
3914 to output the assembler directives which denote the end
3917 To make debuggers happy, emit a nop if the epilogue was completely
3918 eliminated due to a volatile call as the last insn in the
3919 current function. That way the return address (in %r2) will
3920 always point to a valid instruction in the current function. */
3922 /* Get the last real insn. */
3923 if (GET_CODE (insn) == NOTE)
3924 insn = prev_real_insn (insn);
3926 /* If it is a sequence, then look inside. */
3927 if (insn && GET_CODE (insn) == INSN && GET_CODE (PATTERN (insn)) == SEQUENCE)
3928 insn = XVECEXP (PATTERN (insn), 0, 0);
3930 /* If insn is a CALL_INSN, then it must be a call to a volatile
3931 function (otherwise there would be epilogue insns). */
3932 if (insn && GET_CODE (insn) == CALL_INSN)
3934 fputs ("\tnop\n", file);
3938 fputs ("\t.EXIT\n\t.PROCEND\n", file);
3940 if (TARGET_SOM && TARGET_GAS)
3942 /* We done with this subspace except possibly for some additional
3943 debug information. Forget that we are in this subspace to ensure
3944 that the next function is output in its own subspace. */
3948 if (INSN_ADDRESSES_SET_P ())
3950 insn = get_last_nonnote_insn ();
3951 last_address += INSN_ADDRESSES (INSN_UID (insn));
3953 last_address += insn_default_length (insn);
3954 last_address = ((last_address + FUNCTION_BOUNDARY / BITS_PER_UNIT - 1)
3955 & ~(FUNCTION_BOUNDARY / BITS_PER_UNIT - 1));
3958 /* Finally, update the total number of code bytes output so far. */
3959 update_total_code_bytes (last_address);
3963 hppa_expand_epilogue (void)
3966 HOST_WIDE_INT offset;
3967 HOST_WIDE_INT ret_off = 0;
3969 int merge_sp_adjust_with_load = 0;
3971 /* We will use this often. */
3972 tmpreg = gen_rtx_REG (word_mode, 1);
3974 /* Try to restore RP early to avoid load/use interlocks when
3975 RP gets used in the return (bv) instruction. This appears to still
3976 be necessary even when we schedule the prologue and epilogue. */
3977 if (regs_ever_live [2] || current_function_calls_eh_return)
3979 ret_off = TARGET_64BIT ? -16 : -20;
3980 if (frame_pointer_needed)
3982 load_reg (2, ret_off, FRAME_POINTER_REGNUM);
3987 /* No frame pointer, and stack is smaller than 8k. */
3988 if (VAL_14_BITS_P (ret_off - actual_fsize))
3990 load_reg (2, ret_off - actual_fsize, STACK_POINTER_REGNUM);
3996 /* General register restores. */
3997 if (frame_pointer_needed)
3999 offset = local_fsize;
4001 /* If the current function calls __builtin_eh_return, then we need
4002 to restore the saved EH data registers. */
4003 if (DO_FRAME_NOTES && current_function_calls_eh_return)
4005 unsigned int i, regno;
4009 regno = EH_RETURN_DATA_REGNO (i);
4010 if (regno == INVALID_REGNUM)
4013 load_reg (regno, offset, FRAME_POINTER_REGNUM);
4014 offset += UNITS_PER_WORD;
4018 for (i = 18; i >= 4; i--)
4019 if (regs_ever_live[i] && ! call_used_regs[i])
4021 load_reg (i, offset, FRAME_POINTER_REGNUM);
4022 offset += UNITS_PER_WORD;
4027 offset = local_fsize - actual_fsize;
4029 /* If the current function calls __builtin_eh_return, then we need
4030 to restore the saved EH data registers. */
4031 if (DO_FRAME_NOTES && current_function_calls_eh_return)
4033 unsigned int i, regno;
4037 regno = EH_RETURN_DATA_REGNO (i);
4038 if (regno == INVALID_REGNUM)
4041 /* Only for the first load.
4042 merge_sp_adjust_with_load holds the register load
4043 with which we will merge the sp adjustment. */
4044 if (merge_sp_adjust_with_load == 0
4046 && VAL_14_BITS_P (-actual_fsize))
4047 merge_sp_adjust_with_load = regno;
4049 load_reg (regno, offset, STACK_POINTER_REGNUM);
4050 offset += UNITS_PER_WORD;
4054 for (i = 18; i >= 3; i--)
4056 if (regs_ever_live[i] && ! call_used_regs[i])
4058 /* Only for the first load.
4059 merge_sp_adjust_with_load holds the register load
4060 with which we will merge the sp adjustment. */
4061 if (merge_sp_adjust_with_load == 0
4063 && VAL_14_BITS_P (-actual_fsize))
4064 merge_sp_adjust_with_load = i;
4066 load_reg (i, offset, STACK_POINTER_REGNUM);
4067 offset += UNITS_PER_WORD;
4072 /* Align pointer properly (doubleword boundary). */
4073 offset = (offset + 7) & ~7;
4075 /* FP register restores. */
4078 /* Adjust the register to index off of. */
4079 if (frame_pointer_needed)
4080 set_reg_plus_d (1, FRAME_POINTER_REGNUM, offset, 0);
4082 set_reg_plus_d (1, STACK_POINTER_REGNUM, offset, 0);
4084 /* Actually do the restores now. */
4085 for (i = FP_SAVED_REG_LAST; i >= FP_SAVED_REG_FIRST; i -= FP_REG_STEP)
4086 if (regs_ever_live[i]
4087 || (! TARGET_64BIT && regs_ever_live[i + 1]))
4089 rtx src = gen_rtx_MEM (DFmode, gen_rtx_POST_INC (DFmode, tmpreg));
4090 rtx dest = gen_rtx_REG (DFmode, i);
4091 emit_move_insn (dest, src);
4095 /* Emit a blockage insn here to keep these insns from being moved to
4096 an earlier spot in the epilogue, or into the main instruction stream.
4098 This is necessary as we must not cut the stack back before all the
4099 restores are finished. */
4100 emit_insn (gen_blockage ());
4102 /* Reset stack pointer (and possibly frame pointer). The stack
4103 pointer is initially set to fp + 64 to avoid a race condition. */
4104 if (frame_pointer_needed)
4106 rtx delta = GEN_INT (-64);
4108 set_reg_plus_d (STACK_POINTER_REGNUM, FRAME_POINTER_REGNUM, 64, 0);
4109 emit_insn (gen_pre_load (frame_pointer_rtx, stack_pointer_rtx, delta));
4111 /* If we were deferring a callee register restore, do it now. */
4112 else if (merge_sp_adjust_with_load)
4114 rtx delta = GEN_INT (-actual_fsize);
4115 rtx dest = gen_rtx_REG (word_mode, merge_sp_adjust_with_load);
4117 emit_insn (gen_pre_load (dest, stack_pointer_rtx, delta));
4119 else if (actual_fsize != 0)
4120 set_reg_plus_d (STACK_POINTER_REGNUM, STACK_POINTER_REGNUM,
4123 /* If we haven't restored %r2 yet (no frame pointer, and a stack
4124 frame greater than 8k), do so now. */
4126 load_reg (2, ret_off, STACK_POINTER_REGNUM);
4128 if (DO_FRAME_NOTES && current_function_calls_eh_return)
4130 rtx sa = EH_RETURN_STACKADJ_RTX;
4132 emit_insn (gen_blockage ());
4133 emit_insn (TARGET_64BIT
4134 ? gen_subdi3 (stack_pointer_rtx, stack_pointer_rtx, sa)
4135 : gen_subsi3 (stack_pointer_rtx, stack_pointer_rtx, sa));
4140 hppa_pic_save_rtx (void)
4142 return get_hard_reg_initial_val (word_mode, PIC_OFFSET_TABLE_REGNUM);
4146 hppa_profile_hook (int label_no)
4148 /* We use SImode for the address of the function in both 32 and
4149 64-bit code to avoid having to provide DImode versions of the
4150 lcla2 and load_offset_label_address insn patterns. */
4151 rtx reg = gen_reg_rtx (SImode);
4152 rtx label_rtx = gen_label_rtx ();
4153 rtx begin_label_rtx, call_insn;
4154 char begin_label_name[16];
4156 ASM_GENERATE_INTERNAL_LABEL (begin_label_name, FUNC_BEGIN_PROLOG_LABEL,
4158 begin_label_rtx = gen_rtx_SYMBOL_REF (SImode, ggc_strdup (begin_label_name));
4161 emit_move_insn (arg_pointer_rtx,
4162 gen_rtx_PLUS (word_mode, virtual_outgoing_args_rtx,
4165 emit_move_insn (gen_rtx_REG (word_mode, 26), gen_rtx_REG (word_mode, 2));
4167 /* The address of the function is loaded into %r25 with a instruction-
4168 relative sequence that avoids the use of relocations. The sequence
4169 is split so that the load_offset_label_address instruction can
4170 occupy the delay slot of the call to _mcount. */
4172 emit_insn (gen_lcla2 (reg, label_rtx));
4174 emit_insn (gen_lcla1 (reg, label_rtx));
4176 emit_insn (gen_load_offset_label_address (gen_rtx_REG (SImode, 25),
4177 reg, begin_label_rtx, label_rtx));
4179 #ifndef NO_PROFILE_COUNTERS
4181 rtx count_label_rtx, addr, r24;
4182 char count_label_name[16];
4184 ASM_GENERATE_INTERNAL_LABEL (count_label_name, "LP", label_no);
4185 count_label_rtx = gen_rtx_SYMBOL_REF (Pmode, ggc_strdup (count_label_name));
4187 addr = force_reg (Pmode, count_label_rtx);
4188 r24 = gen_rtx_REG (Pmode, 24);
4189 emit_move_insn (r24, addr);
4192 emit_call_insn (gen_call (gen_rtx_MEM (Pmode,
4193 gen_rtx_SYMBOL_REF (Pmode,
4195 GEN_INT (TARGET_64BIT ? 24 : 12)));
4197 use_reg (&CALL_INSN_FUNCTION_USAGE (call_insn), r24);
4202 emit_call_insn (gen_call (gen_rtx_MEM (Pmode,
4203 gen_rtx_SYMBOL_REF (Pmode,
4205 GEN_INT (TARGET_64BIT ? 16 : 8)));
4209 use_reg (&CALL_INSN_FUNCTION_USAGE (call_insn), gen_rtx_REG (SImode, 25));
4210 use_reg (&CALL_INSN_FUNCTION_USAGE (call_insn), gen_rtx_REG (SImode, 26));
4212 /* Indicate the _mcount call cannot throw, nor will it execute a
4214 REG_NOTES (call_insn)
4215 = gen_rtx_EXPR_LIST (REG_EH_REGION, constm1_rtx, REG_NOTES (call_insn));
4218 /* Fetch the return address for the frame COUNT steps up from
4219 the current frame, after the prologue. FRAMEADDR is the
4220 frame pointer of the COUNT frame.
4222 We want to ignore any export stub remnants here. To handle this,
4223 we examine the code at the return address, and if it is an export
4224 stub, we return a memory rtx for the stub return address stored
4227 The value returned is used in two different ways:
4229 1. To find a function's caller.
4231 2. To change the return address for a function.
4233 This function handles most instances of case 1; however, it will
4234 fail if there are two levels of stubs to execute on the return
4235 path. The only way I believe that can happen is if the return value
4236 needs a parameter relocation, which never happens for C code.
4238 This function handles most instances of case 2; however, it will
4239 fail if we did not originally have stub code on the return path
4240 but will need stub code on the new return path. This can happen if
4241 the caller & callee are both in the main program, but the new
4242 return location is in a shared library. */
4245 return_addr_rtx (int count, rtx frameaddr)
4255 rp = get_hard_reg_initial_val (Pmode, 2);
4257 if (TARGET_64BIT || TARGET_NO_SPACE_REGS)
4260 saved_rp = gen_reg_rtx (Pmode);
4261 emit_move_insn (saved_rp, rp);
4263 /* Get pointer to the instruction stream. We have to mask out the
4264 privilege level from the two low order bits of the return address
4265 pointer here so that ins will point to the start of the first
4266 instruction that would have been executed if we returned. */
4267 ins = copy_to_reg (gen_rtx_AND (Pmode, rp, MASK_RETURN_ADDR));
4268 label = gen_label_rtx ();
4270 /* Check the instruction stream at the normal return address for the
4273 0x4bc23fd1 | stub+8: ldw -18(sr0,sp),rp
4274 0x004010a1 | stub+12: ldsid (sr0,rp),r1
4275 0x00011820 | stub+16: mtsp r1,sr0
4276 0xe0400002 | stub+20: be,n 0(sr0,rp)
4278 If it is an export stub, than our return address is really in
4281 emit_cmp_insn (gen_rtx_MEM (SImode, ins), GEN_INT (0x4bc23fd1), NE,
4282 NULL_RTX, SImode, 1);
4283 emit_jump_insn (gen_bne (label));
4285 emit_cmp_insn (gen_rtx_MEM (SImode, plus_constant (ins, 4)),
4286 GEN_INT (0x004010a1), NE, NULL_RTX, SImode, 1);
4287 emit_jump_insn (gen_bne (label));
4289 emit_cmp_insn (gen_rtx_MEM (SImode, plus_constant (ins, 8)),
4290 GEN_INT (0x00011820), NE, NULL_RTX, SImode, 1);
4291 emit_jump_insn (gen_bne (label));
4293 emit_cmp_insn (gen_rtx_MEM (SImode, plus_constant (ins, 12)),
4294 GEN_INT (0xe0400002), NE, NULL_RTX, SImode, 1);
4296 /* If there is no export stub then just use the value saved from
4297 the return pointer register. */
4299 emit_jump_insn (gen_bne (label));
4301 /* Here we know that our return address points to an export
4302 stub. We don't want to return the address of the export stub,
4303 but rather the return address of the export stub. That return
4304 address is stored at -24[frameaddr]. */
4306 emit_move_insn (saved_rp,
4308 memory_address (Pmode,
4309 plus_constant (frameaddr,
4316 /* This is only valid once reload has completed because it depends on
4317 knowing exactly how much (if any) frame there is and...
4319 It's only valid if there is no frame marker to de-allocate and...
4321 It's only valid if %r2 hasn't been saved into the caller's frame
4322 (we're not profiling and %r2 isn't live anywhere). */
4324 hppa_can_use_return_insn_p (void)
4326 return (reload_completed
4327 && (compute_frame_size (get_frame_size (), 0) ? 0 : 1)
4328 && ! regs_ever_live[2]
4329 && ! frame_pointer_needed);
4333 emit_bcond_fp (enum rtx_code code, rtx operand0)
4335 emit_jump_insn (gen_rtx_SET (VOIDmode, pc_rtx,
4336 gen_rtx_IF_THEN_ELSE (VOIDmode,
4337 gen_rtx_fmt_ee (code,
4339 gen_rtx_REG (CCFPmode, 0),
4341 gen_rtx_LABEL_REF (VOIDmode, operand0),
4347 gen_cmp_fp (enum rtx_code code, rtx operand0, rtx operand1)
4349 return gen_rtx_SET (VOIDmode, gen_rtx_REG (CCFPmode, 0),
4350 gen_rtx_fmt_ee (code, CCFPmode, operand0, operand1));
4353 /* Adjust the cost of a scheduling dependency. Return the new cost of
4354 a dependency LINK or INSN on DEP_INSN. COST is the current cost. */
4357 pa_adjust_cost (rtx insn, rtx link, rtx dep_insn, int cost)
4359 enum attr_type attr_type;
4361 /* Don't adjust costs for a pa8000 chip, also do not adjust any
4362 true dependencies as they are described with bypasses now. */
4363 if (pa_cpu >= PROCESSOR_8000 || REG_NOTE_KIND (link) == 0)
4366 if (! recog_memoized (insn))
4369 attr_type = get_attr_type (insn);
4371 switch (REG_NOTE_KIND (link))
4374 /* Anti dependency; DEP_INSN reads a register that INSN writes some
4377 if (attr_type == TYPE_FPLOAD)
4379 rtx pat = PATTERN (insn);
4380 rtx dep_pat = PATTERN (dep_insn);
4381 if (GET_CODE (pat) == PARALLEL)
4383 /* This happens for the fldXs,mb patterns. */
4384 pat = XVECEXP (pat, 0, 0);
4386 if (GET_CODE (pat) != SET || GET_CODE (dep_pat) != SET)
4387 /* If this happens, we have to extend this to schedule
4388 optimally. Return 0 for now. */
4391 if (reg_mentioned_p (SET_DEST (pat), SET_SRC (dep_pat)))
4393 if (! recog_memoized (dep_insn))
4395 switch (get_attr_type (dep_insn))
4402 case TYPE_FPSQRTSGL:
4403 case TYPE_FPSQRTDBL:
4404 /* A fpload can't be issued until one cycle before a
4405 preceding arithmetic operation has finished if
4406 the target of the fpload is any of the sources
4407 (or destination) of the arithmetic operation. */
4408 return insn_default_latency (dep_insn) - 1;
4415 else if (attr_type == TYPE_FPALU)
4417 rtx pat = PATTERN (insn);
4418 rtx dep_pat = PATTERN (dep_insn);
4419 if (GET_CODE (pat) == PARALLEL)
4421 /* This happens for the fldXs,mb patterns. */
4422 pat = XVECEXP (pat, 0, 0);
4424 if (GET_CODE (pat) != SET || GET_CODE (dep_pat) != SET)
4425 /* If this happens, we have to extend this to schedule
4426 optimally. Return 0 for now. */
4429 if (reg_mentioned_p (SET_DEST (pat), SET_SRC (dep_pat)))
4431 if (! recog_memoized (dep_insn))
4433 switch (get_attr_type (dep_insn))
4437 case TYPE_FPSQRTSGL:
4438 case TYPE_FPSQRTDBL:
4439 /* An ALU flop can't be issued until two cycles before a
4440 preceding divide or sqrt operation has finished if
4441 the target of the ALU flop is any of the sources
4442 (or destination) of the divide or sqrt operation. */
4443 return insn_default_latency (dep_insn) - 2;
4451 /* For other anti dependencies, the cost is 0. */
4454 case REG_DEP_OUTPUT:
4455 /* Output dependency; DEP_INSN writes a register that INSN writes some
4457 if (attr_type == TYPE_FPLOAD)
4459 rtx pat = PATTERN (insn);
4460 rtx dep_pat = PATTERN (dep_insn);
4461 if (GET_CODE (pat) == PARALLEL)
4463 /* This happens for the fldXs,mb patterns. */
4464 pat = XVECEXP (pat, 0, 0);
4466 if (GET_CODE (pat) != SET || GET_CODE (dep_pat) != SET)
4467 /* If this happens, we have to extend this to schedule
4468 optimally. Return 0 for now. */
4471 if (reg_mentioned_p (SET_DEST (pat), SET_DEST (dep_pat)))
4473 if (! recog_memoized (dep_insn))
4475 switch (get_attr_type (dep_insn))
4482 case TYPE_FPSQRTSGL:
4483 case TYPE_FPSQRTDBL:
4484 /* A fpload can't be issued until one cycle before a
4485 preceding arithmetic operation has finished if
4486 the target of the fpload is the destination of the
4487 arithmetic operation.
4489 Exception: For PA7100LC, PA7200 and PA7300, the cost
4490 is 3 cycles, unless they bundle together. We also
4491 pay the penalty if the second insn is a fpload. */
4492 return insn_default_latency (dep_insn) - 1;
4499 else if (attr_type == TYPE_FPALU)
4501 rtx pat = PATTERN (insn);
4502 rtx dep_pat = PATTERN (dep_insn);
4503 if (GET_CODE (pat) == PARALLEL)
4505 /* This happens for the fldXs,mb patterns. */
4506 pat = XVECEXP (pat, 0, 0);
4508 if (GET_CODE (pat) != SET || GET_CODE (dep_pat) != SET)
4509 /* If this happens, we have to extend this to schedule
4510 optimally. Return 0 for now. */
4513 if (reg_mentioned_p (SET_DEST (pat), SET_DEST (dep_pat)))
4515 if (! recog_memoized (dep_insn))
4517 switch (get_attr_type (dep_insn))
4521 case TYPE_FPSQRTSGL:
4522 case TYPE_FPSQRTDBL:
4523 /* An ALU flop can't be issued until two cycles before a
4524 preceding divide or sqrt operation has finished if
4525 the target of the ALU flop is also the target of
4526 the divide or sqrt operation. */
4527 return insn_default_latency (dep_insn) - 2;
4535 /* For other output dependencies, the cost is 0. */
4543 /* Adjust scheduling priorities. We use this to try and keep addil
4544 and the next use of %r1 close together. */
4546 pa_adjust_priority (rtx insn, int priority)
4548 rtx set = single_set (insn);
4552 src = SET_SRC (set);
4553 dest = SET_DEST (set);
4554 if (GET_CODE (src) == LO_SUM
4555 && symbolic_operand (XEXP (src, 1), VOIDmode)
4556 && ! read_only_operand (XEXP (src, 1), VOIDmode))
4559 else if (GET_CODE (src) == MEM
4560 && GET_CODE (XEXP (src, 0)) == LO_SUM
4561 && symbolic_operand (XEXP (XEXP (src, 0), 1), VOIDmode)
4562 && ! read_only_operand (XEXP (XEXP (src, 0), 1), VOIDmode))
4565 else if (GET_CODE (dest) == MEM
4566 && GET_CODE (XEXP (dest, 0)) == LO_SUM
4567 && symbolic_operand (XEXP (XEXP (dest, 0), 1), VOIDmode)
4568 && ! read_only_operand (XEXP (XEXP (dest, 0), 1), VOIDmode))
4574 /* The 700 can only issue a single insn at a time.
4575 The 7XXX processors can issue two insns at a time.
4576 The 8000 can issue 4 insns at a time. */
4578 pa_issue_rate (void)
4582 case PROCESSOR_700: return 1;
4583 case PROCESSOR_7100: return 2;
4584 case PROCESSOR_7100LC: return 2;
4585 case PROCESSOR_7200: return 2;
4586 case PROCESSOR_7300: return 2;
4587 case PROCESSOR_8000: return 4;
4596 /* Return any length adjustment needed by INSN which already has its length
4597 computed as LENGTH. Return zero if no adjustment is necessary.
4599 For the PA: function calls, millicode calls, and backwards short
4600 conditional branches with unfilled delay slots need an adjustment by +1
4601 (to account for the NOP which will be inserted into the instruction stream).
4603 Also compute the length of an inline block move here as it is too
4604 complicated to express as a length attribute in pa.md. */
4606 pa_adjust_insn_length (rtx insn, int length)
4608 rtx pat = PATTERN (insn);
4610 /* Jumps inside switch tables which have unfilled delay slots need
4612 if (GET_CODE (insn) == JUMP_INSN
4613 && GET_CODE (pat) == PARALLEL
4614 && get_attr_type (insn) == TYPE_BTABLE_BRANCH)
4616 /* Millicode insn with an unfilled delay slot. */
4617 else if (GET_CODE (insn) == INSN
4618 && GET_CODE (pat) != SEQUENCE
4619 && GET_CODE (pat) != USE
4620 && GET_CODE (pat) != CLOBBER
4621 && get_attr_type (insn) == TYPE_MILLI)
4623 /* Block move pattern. */
4624 else if (GET_CODE (insn) == INSN
4625 && GET_CODE (pat) == PARALLEL
4626 && GET_CODE (XVECEXP (pat, 0, 0)) == SET
4627 && GET_CODE (XEXP (XVECEXP (pat, 0, 0), 0)) == MEM
4628 && GET_CODE (XEXP (XVECEXP (pat, 0, 0), 1)) == MEM
4629 && GET_MODE (XEXP (XVECEXP (pat, 0, 0), 0)) == BLKmode
4630 && GET_MODE (XEXP (XVECEXP (pat, 0, 0), 1)) == BLKmode)
4631 return compute_movmem_length (insn) - 4;
4632 /* Block clear pattern. */
4633 else if (GET_CODE (insn) == INSN
4634 && GET_CODE (pat) == PARALLEL
4635 && GET_CODE (XVECEXP (pat, 0, 0)) == SET
4636 && GET_CODE (XEXP (XVECEXP (pat, 0, 0), 0)) == MEM
4637 && XEXP (XVECEXP (pat, 0, 0), 1) == const0_rtx
4638 && GET_MODE (XEXP (XVECEXP (pat, 0, 0), 0)) == BLKmode)
4639 return compute_clrmem_length (insn) - 4;
4640 /* Conditional branch with an unfilled delay slot. */
4641 else if (GET_CODE (insn) == JUMP_INSN && ! simplejump_p (insn))
4643 /* Adjust a short backwards conditional with an unfilled delay slot. */
4644 if (GET_CODE (pat) == SET
4646 && ! forward_branch_p (insn))
4648 else if (GET_CODE (pat) == PARALLEL
4649 && get_attr_type (insn) == TYPE_PARALLEL_BRANCH
4652 /* Adjust dbra insn with short backwards conditional branch with
4653 unfilled delay slot -- only for case where counter is in a
4654 general register register. */
4655 else if (GET_CODE (pat) == PARALLEL
4656 && GET_CODE (XVECEXP (pat, 0, 1)) == SET
4657 && GET_CODE (XEXP (XVECEXP (pat, 0, 1), 0)) == REG
4658 && ! FP_REG_P (XEXP (XVECEXP (pat, 0, 1), 0))
4660 && ! forward_branch_p (insn))
4668 /* Print operand X (an rtx) in assembler syntax to file FILE.
4669 CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
4670 For `%' followed by punctuation, CODE is the punctuation and X is null. */
4673 print_operand (FILE *file, rtx x, int code)
4678 /* Output a 'nop' if there's nothing for the delay slot. */
4679 if (dbr_sequence_length () == 0)
4680 fputs ("\n\tnop", file);
4683 /* Output a nullification completer if there's nothing for the */
4684 /* delay slot or nullification is requested. */
4685 if (dbr_sequence_length () == 0 ||
4687 INSN_ANNULLED_BRANCH_P (XVECEXP (final_sequence, 0, 0))))
4691 /* Print out the second register name of a register pair.
4692 I.e., R (6) => 7. */
4693 fputs (reg_names[REGNO (x) + 1], file);
4696 /* A register or zero. */
4698 || (x == CONST0_RTX (DFmode))
4699 || (x == CONST0_RTX (SFmode)))
4701 fputs ("%r0", file);
4707 /* A register or zero (floating point). */
4709 || (x == CONST0_RTX (DFmode))
4710 || (x == CONST0_RTX (SFmode)))
4712 fputs ("%fr0", file);
4721 xoperands[0] = XEXP (XEXP (x, 0), 0);
4722 xoperands[1] = XVECEXP (XEXP (XEXP (x, 0), 1), 0, 0);
4723 output_global_address (file, xoperands[1], 0);
4724 fprintf (file, "(%s)", reg_names [REGNO (xoperands[0])]);
4728 case 'C': /* Plain (C)ondition */
4730 switch (GET_CODE (x))
4733 fputs ("=", file); break;
4735 fputs ("<>", file); break;
4737 fputs (">", file); break;
4739 fputs (">=", file); break;
4741 fputs (">>=", file); break;
4743 fputs (">>", file); break;
4745 fputs ("<", file); break;
4747 fputs ("<=", file); break;
4749 fputs ("<<=", file); break;
4751 fputs ("<<", file); break;
4756 case 'N': /* Condition, (N)egated */
4757 switch (GET_CODE (x))
4760 fputs ("<>", file); break;
4762 fputs ("=", file); break;
4764 fputs ("<=", file); break;
4766 fputs ("<", file); break;
4768 fputs ("<<", file); break;
4770 fputs ("<<=", file); break;
4772 fputs (">=", file); break;
4774 fputs (">", file); break;
4776 fputs (">>", file); break;
4778 fputs (">>=", file); break;
4783 /* For floating point comparisons. Note that the output
4784 predicates are the complement of the desired mode. The
4785 conditions for GT, GE, LT, LE and LTGT cause an invalid
4786 operation exception if the result is unordered and this
4787 exception is enabled in the floating-point status register. */
4789 switch (GET_CODE (x))
4792 fputs ("!=", file); break;
4794 fputs ("=", file); break;
4796 fputs ("!>", file); break;
4798 fputs ("!>=", file); break;
4800 fputs ("!<", file); break;
4802 fputs ("!<=", file); break;
4804 fputs ("!<>", file); break;
4806 fputs ("!?<=", file); break;
4808 fputs ("!?<", file); break;
4810 fputs ("!?>=", file); break;
4812 fputs ("!?>", file); break;
4814 fputs ("!?=", file); break;
4816 fputs ("!?", file); break;
4818 fputs ("?", file); break;
4823 case 'S': /* Condition, operands are (S)wapped. */
4824 switch (GET_CODE (x))
4827 fputs ("=", file); break;
4829 fputs ("<>", file); break;
4831 fputs ("<", file); break;
4833 fputs ("<=", file); break;
4835 fputs ("<<=", file); break;
4837 fputs ("<<", file); break;
4839 fputs (">", file); break;
4841 fputs (">=", file); break;
4843 fputs (">>=", file); break;
4845 fputs (">>", file); break;
4850 case 'B': /* Condition, (B)oth swapped and negate. */
4851 switch (GET_CODE (x))
4854 fputs ("<>", file); break;
4856 fputs ("=", file); break;
4858 fputs (">=", file); break;
4860 fputs (">", file); break;
4862 fputs (">>", file); break;
4864 fputs (">>=", file); break;
4866 fputs ("<=", file); break;
4868 fputs ("<", file); break;
4870 fputs ("<<", file); break;
4872 fputs ("<<=", file); break;
4878 gcc_assert (GET_CODE (x) == CONST_INT);
4879 fprintf (file, HOST_WIDE_INT_PRINT_DEC, ~INTVAL (x));
4882 gcc_assert (GET_CODE (x) == CONST_INT);
4883 fprintf (file, HOST_WIDE_INT_PRINT_DEC, 64 - (INTVAL (x) & 63));
4886 gcc_assert (GET_CODE (x) == CONST_INT);
4887 fprintf (file, HOST_WIDE_INT_PRINT_DEC, 32 - (INTVAL (x) & 31));
4890 gcc_assert (GET_CODE (x) == CONST_INT && exact_log2 (INTVAL (x)) >= 0);
4891 fprintf (file, "%d", exact_log2 (INTVAL (x)));
4894 gcc_assert (GET_CODE (x) == CONST_INT);
4895 fprintf (file, HOST_WIDE_INT_PRINT_DEC, 63 - (INTVAL (x) & 63));
4898 gcc_assert (GET_CODE (x) == CONST_INT);
4899 fprintf (file, HOST_WIDE_INT_PRINT_DEC, 31 - (INTVAL (x) & 31));
4902 if (GET_CODE (x) == CONST_INT)
4907 switch (GET_CODE (XEXP (x, 0)))
4911 if (ASSEMBLER_DIALECT == 0)
4912 fputs ("s,mb", file);
4914 fputs (",mb", file);
4918 if (ASSEMBLER_DIALECT == 0)
4919 fputs ("s,ma", file);
4921 fputs (",ma", file);
4924 if (GET_CODE (XEXP (XEXP (x, 0), 0)) == REG
4925 && GET_CODE (XEXP (XEXP (x, 0), 1)) == REG)
4927 if (ASSEMBLER_DIALECT == 0)
4930 else if (GET_CODE (XEXP (XEXP (x, 0), 0)) == MULT
4931 || GET_CODE (XEXP (XEXP (x, 0), 1)) == MULT)
4933 if (ASSEMBLER_DIALECT == 0)
4934 fputs ("x,s", file);
4938 else if (code == 'F' && ASSEMBLER_DIALECT == 0)
4942 if (code == 'F' && ASSEMBLER_DIALECT == 0)
4948 output_global_address (file, x, 0);
4951 output_global_address (file, x, 1);
4953 case 0: /* Don't do anything special */
4958 compute_zdepwi_operands (INTVAL (x), op);
4959 fprintf (file, "%d,%d,%d", op[0], op[1], op[2]);
4965 compute_zdepdi_operands (INTVAL (x), op);
4966 fprintf (file, "%d,%d,%d", op[0], op[1], op[2]);
4970 /* We can get here from a .vtable_inherit due to our
4971 CONSTANT_ADDRESS_P rejecting perfectly good constant
4977 if (GET_CODE (x) == REG)
4979 fputs (reg_names [REGNO (x)], file);
4980 if (TARGET_64BIT && FP_REG_P (x) && GET_MODE_SIZE (GET_MODE (x)) <= 4)
4986 && GET_MODE_SIZE (GET_MODE (x)) <= 4
4987 && (REGNO (x) & 1) == 0)
4990 else if (GET_CODE (x) == MEM)
4992 int size = GET_MODE_SIZE (GET_MODE (x));
4993 rtx base = NULL_RTX;
4994 switch (GET_CODE (XEXP (x, 0)))
4998 base = XEXP (XEXP (x, 0), 0);
4999 fprintf (file, "-%d(%s)", size, reg_names [REGNO (base)]);
5003 base = XEXP (XEXP (x, 0), 0);
5004 fprintf (file, "%d(%s)", size, reg_names [REGNO (base)]);
5007 if (GET_CODE (XEXP (XEXP (x, 0), 0)) == MULT)
5008 fprintf (file, "%s(%s)",
5009 reg_names [REGNO (XEXP (XEXP (XEXP (x, 0), 0), 0))],
5010 reg_names [REGNO (XEXP (XEXP (x, 0), 1))]);
5011 else if (GET_CODE (XEXP (XEXP (x, 0), 1)) == MULT)
5012 fprintf (file, "%s(%s)",
5013 reg_names [REGNO (XEXP (XEXP (XEXP (x, 0), 1), 0))],
5014 reg_names [REGNO (XEXP (XEXP (x, 0), 0))]);
5015 else if (GET_CODE (XEXP (XEXP (x, 0), 0)) == REG
5016 && GET_CODE (XEXP (XEXP (x, 0), 1)) == REG)
5018 /* Because the REG_POINTER flag can get lost during reload,
5019 GO_IF_LEGITIMATE_ADDRESS canonicalizes the order of the
5020 index and base registers in the combined move patterns. */
5021 rtx base = XEXP (XEXP (x, 0), 1);
5022 rtx index = XEXP (XEXP (x, 0), 0);
5024 fprintf (file, "%s(%s)",
5025 reg_names [REGNO (index)], reg_names [REGNO (base)]);
5028 output_address (XEXP (x, 0));
5031 output_address (XEXP (x, 0));
5036 output_addr_const (file, x);
5039 /* output a SYMBOL_REF or a CONST expression involving a SYMBOL_REF. */
5042 output_global_address (FILE *file, rtx x, int round_constant)
5045 /* Imagine (high (const (plus ...))). */
5046 if (GET_CODE (x) == HIGH)
5049 if (GET_CODE (x) == SYMBOL_REF && read_only_operand (x, VOIDmode))
5050 output_addr_const (file, x);
5051 else if (GET_CODE (x) == SYMBOL_REF && !flag_pic)
5053 output_addr_const (file, x);
5054 fputs ("-$global$", file);
5056 else if (GET_CODE (x) == CONST)
5058 const char *sep = "";
5059 int offset = 0; /* assembler wants -$global$ at end */
5060 rtx base = NULL_RTX;
5062 switch (GET_CODE (XEXP (XEXP (x, 0), 0)))
5065 base = XEXP (XEXP (x, 0), 0);
5066 output_addr_const (file, base);
5069 offset = INTVAL (XEXP (XEXP (x, 0), 0));
5075 switch (GET_CODE (XEXP (XEXP (x, 0), 1)))
5078 base = XEXP (XEXP (x, 0), 1);
5079 output_addr_const (file, base);
5082 offset = INTVAL (XEXP (XEXP (x, 0), 1));
5088 /* How bogus. The compiler is apparently responsible for
5089 rounding the constant if it uses an LR field selector.
5091 The linker and/or assembler seem a better place since
5092 they have to do this kind of thing already.
5094 If we fail to do this, HP's optimizing linker may eliminate
5095 an addil, but not update the ldw/stw/ldo instruction that
5096 uses the result of the addil. */
5098 offset = ((offset + 0x1000) & ~0x1fff);
5100 switch (GET_CODE (XEXP (x, 0)))
5113 gcc_assert (GET_CODE (XEXP (XEXP (x, 0), 0)) == SYMBOL_REF);
5121 if (!read_only_operand (base, VOIDmode) && !flag_pic)
5122 fputs ("-$global$", file);
5124 fprintf (file, "%s%d", sep, offset);
5127 output_addr_const (file, x);
5130 /* Output boilerplate text to appear at the beginning of the file.
5131 There are several possible versions. */
5132 #define aputs(x) fputs(x, asm_out_file)
5134 pa_file_start_level (void)
5137 aputs ("\t.LEVEL 2.0w\n");
5138 else if (TARGET_PA_20)
5139 aputs ("\t.LEVEL 2.0\n");
5140 else if (TARGET_PA_11)
5141 aputs ("\t.LEVEL 1.1\n");
5143 aputs ("\t.LEVEL 1.0\n");
5147 pa_file_start_space (int sortspace)
5149 aputs ("\t.SPACE $PRIVATE$");
5152 aputs ("\n\t.SUBSPA $DATA$,QUAD=1,ALIGN=8,ACCESS=31"
5153 "\n\t.SUBSPA $BSS$,QUAD=1,ALIGN=8,ACCESS=31,ZERO,SORT=82"
5154 "\n\t.SPACE $TEXT$");
5157 aputs ("\n\t.SUBSPA $LIT$,QUAD=0,ALIGN=8,ACCESS=44"
5158 "\n\t.SUBSPA $CODE$,QUAD=0,ALIGN=8,ACCESS=44,CODE_ONLY\n");
5162 pa_file_start_file (int want_version)
5164 if (write_symbols != NO_DEBUG)
5166 output_file_directive (asm_out_file, main_input_filename);
5168 aputs ("\t.version\t\"01.01\"\n");
5173 pa_file_start_mcount (const char *aswhat)
5176 fprintf (asm_out_file, "\t.IMPORT _mcount,%s\n", aswhat);
5180 pa_elf_file_start (void)
5182 pa_file_start_level ();
5183 pa_file_start_mcount ("ENTRY");
5184 pa_file_start_file (0);
5188 pa_som_file_start (void)
5190 pa_file_start_level ();
5191 pa_file_start_space (0);
5192 aputs ("\t.IMPORT $global$,DATA\n"
5193 "\t.IMPORT $$dyncall,MILLICODE\n");
5194 pa_file_start_mcount ("CODE");
5195 pa_file_start_file (0);
5199 pa_linux_file_start (void)
5201 pa_file_start_file (1);
5202 pa_file_start_level ();
5203 pa_file_start_mcount ("CODE");
5207 pa_hpux64_gas_file_start (void)
5209 pa_file_start_level ();
5210 #ifdef ASM_OUTPUT_TYPE_DIRECTIVE
5212 ASM_OUTPUT_TYPE_DIRECTIVE (asm_out_file, "_mcount", "function");
5214 pa_file_start_file (1);
5218 pa_hpux64_hpas_file_start (void)
5220 pa_file_start_level ();
5221 pa_file_start_space (1);
5222 pa_file_start_mcount ("CODE");
5223 pa_file_start_file (0);
5227 static struct deferred_plabel *
5228 get_plabel (rtx symbol)
5230 const char *fname = XSTR (symbol, 0);
5233 /* See if we have already put this function on the list of deferred
5234 plabels. This list is generally small, so a liner search is not
5235 too ugly. If it proves too slow replace it with something faster. */
5236 for (i = 0; i < n_deferred_plabels; i++)
5237 if (strcmp (fname, XSTR (deferred_plabels[i].symbol, 0)) == 0)
5240 /* If the deferred plabel list is empty, or this entry was not found
5241 on the list, create a new entry on the list. */
5242 if (deferred_plabels == NULL || i == n_deferred_plabels)
5246 if (deferred_plabels == 0)
5247 deferred_plabels = (struct deferred_plabel *)
5248 ggc_alloc (sizeof (struct deferred_plabel));
5250 deferred_plabels = (struct deferred_plabel *)
5251 ggc_realloc (deferred_plabels,
5252 ((n_deferred_plabels + 1)
5253 * sizeof (struct deferred_plabel)));
5255 i = n_deferred_plabels++;
5256 deferred_plabels[i].internal_label = gen_label_rtx ();
5257 deferred_plabels[i].symbol = symbol;
5259 /* Gross. We have just implicitly taken the address of this
5260 function. Mark it in the same manner as assemble_name. */
5261 id = maybe_get_identifier (targetm.strip_name_encoding (fname));
5263 mark_referenced (id);
5266 return &deferred_plabels[i];
5270 output_deferred_plabels (void)
5273 /* If we have deferred plabels, then we need to switch into the data
5274 section and align it to a 4 byte boundary before we output the
5275 deferred plabels. */
5276 if (n_deferred_plabels)
5279 ASM_OUTPUT_ALIGN (asm_out_file, TARGET_64BIT ? 3 : 2);
5282 /* Now output the deferred plabels. */
5283 for (i = 0; i < n_deferred_plabels; i++)
5285 (*targetm.asm_out.internal_label) (asm_out_file, "L",
5286 CODE_LABEL_NUMBER (deferred_plabels[i].internal_label));
5287 assemble_integer (deferred_plabels[i].symbol,
5288 TARGET_64BIT ? 8 : 4, TARGET_64BIT ? 64 : 32, 1);
5292 #ifdef HPUX_LONG_DOUBLE_LIBRARY
5293 /* Initialize optabs to point to HPUX long double emulation routines. */
5295 pa_hpux_init_libfuncs (void)
5297 set_optab_libfunc (add_optab, TFmode, "_U_Qfadd");
5298 set_optab_libfunc (sub_optab, TFmode, "_U_Qfsub");
5299 set_optab_libfunc (smul_optab, TFmode, "_U_Qfmpy");
5300 set_optab_libfunc (sdiv_optab, TFmode, "_U_Qfdiv");
5301 set_optab_libfunc (smin_optab, TFmode, "_U_Qmin");
5302 set_optab_libfunc (smax_optab, TFmode, "_U_Qfmax");
5303 set_optab_libfunc (sqrt_optab, TFmode, "_U_Qfsqrt");
5304 set_optab_libfunc (abs_optab, TFmode, "_U_Qfabs");
5305 set_optab_libfunc (neg_optab, TFmode, "_U_Qfneg");
5307 set_optab_libfunc (eq_optab, TFmode, "_U_Qfeq");
5308 set_optab_libfunc (ne_optab, TFmode, "_U_Qfne");
5309 set_optab_libfunc (gt_optab, TFmode, "_U_Qfgt");
5310 set_optab_libfunc (ge_optab, TFmode, "_U_Qfge");
5311 set_optab_libfunc (lt_optab, TFmode, "_U_Qflt");
5312 set_optab_libfunc (le_optab, TFmode, "_U_Qfle");
5313 set_optab_libfunc (unord_optab, TFmode, "_U_Qfunord");
5315 set_conv_libfunc (sext_optab, TFmode, SFmode, "_U_Qfcnvff_sgl_to_quad");
5316 set_conv_libfunc (sext_optab, TFmode, DFmode, "_U_Qfcnvff_dbl_to_quad");
5317 set_conv_libfunc (trunc_optab, SFmode, TFmode, "_U_Qfcnvff_quad_to_sgl");
5318 set_conv_libfunc (trunc_optab, DFmode, TFmode, "_U_Qfcnvff_quad_to_dbl");
5320 set_conv_libfunc (sfix_optab, SImode, TFmode, TARGET_64BIT
5321 ? "__U_Qfcnvfxt_quad_to_sgl"
5322 : "_U_Qfcnvfxt_quad_to_sgl");
5323 set_conv_libfunc (sfix_optab, DImode, TFmode, "_U_Qfcnvfxt_quad_to_dbl");
5324 set_conv_libfunc (ufix_optab, SImode, TFmode, "_U_Qfcnvfxt_quad_to_usgl");
5325 set_conv_libfunc (ufix_optab, DImode, TFmode, "_U_Qfcnvfxt_quad_to_udbl");
5327 set_conv_libfunc (sfloat_optab, TFmode, SImode, "_U_Qfcnvxf_sgl_to_quad");
5328 set_conv_libfunc (sfloat_optab, TFmode, DImode, "_U_Qfcnvxf_dbl_to_quad");
5332 /* HP's millicode routines mean something special to the assembler.
5333 Keep track of which ones we have used. */
5335 enum millicodes { remI, remU, divI, divU, mulI, end1000 };
5336 static void import_milli (enum millicodes);
5337 static char imported[(int) end1000];
5338 static const char * const milli_names[] = {"remI", "remU", "divI", "divU", "mulI"};
5339 static const char import_string[] = ".IMPORT $$....,MILLICODE";
5340 #define MILLI_START 10
5343 import_milli (enum millicodes code)
5345 char str[sizeof (import_string)];
5347 if (!imported[(int) code])
5349 imported[(int) code] = 1;
5350 strcpy (str, import_string);
5351 strncpy (str + MILLI_START, milli_names[(int) code], 4);
5352 output_asm_insn (str, 0);
5356 /* The register constraints have put the operands and return value in
5357 the proper registers. */
5360 output_mul_insn (int unsignedp ATTRIBUTE_UNUSED, rtx insn)
5362 import_milli (mulI);
5363 return output_millicode_call (insn, gen_rtx_SYMBOL_REF (Pmode, "$$mulI"));
5366 /* Emit the rtl for doing a division by a constant. */
5368 /* Do magic division millicodes exist for this value? */
5369 const int magic_milli[]= {0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1};
5371 /* We'll use an array to keep track of the magic millicodes and
5372 whether or not we've used them already. [n][0] is signed, [n][1] is
5375 static int div_milli[16][2];
5378 emit_hpdiv_const (rtx *operands, int unsignedp)
5380 if (GET_CODE (operands[2]) == CONST_INT
5381 && INTVAL (operands[2]) > 0
5382 && INTVAL (operands[2]) < 16
5383 && magic_milli[INTVAL (operands[2])])
5385 rtx ret = gen_rtx_REG (SImode, TARGET_64BIT ? 2 : 31);
5387 emit_move_insn (gen_rtx_REG (SImode, 26), operands[1]);
5391 gen_rtvec (6, gen_rtx_SET (VOIDmode, gen_rtx_REG (SImode, 29),
5392 gen_rtx_fmt_ee (unsignedp ? UDIV : DIV,
5394 gen_rtx_REG (SImode, 26),
5396 gen_rtx_CLOBBER (VOIDmode, operands[4]),
5397 gen_rtx_CLOBBER (VOIDmode, operands[3]),
5398 gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (SImode, 26)),
5399 gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (SImode, 25)),
5400 gen_rtx_CLOBBER (VOIDmode, ret))));
5401 emit_move_insn (operands[0], gen_rtx_REG (SImode, 29));
5408 output_div_insn (rtx *operands, int unsignedp, rtx insn)
5412 /* If the divisor is a constant, try to use one of the special
5414 if (GET_CODE (operands[0]) == CONST_INT)
5416 static char buf[100];
5417 divisor = INTVAL (operands[0]);
5418 if (!div_milli[divisor][unsignedp])
5420 div_milli[divisor][unsignedp] = 1;
5422 output_asm_insn (".IMPORT $$divU_%0,MILLICODE", operands);
5424 output_asm_insn (".IMPORT $$divI_%0,MILLICODE", operands);
5428 sprintf (buf, "$$divU_" HOST_WIDE_INT_PRINT_DEC,
5429 INTVAL (operands[0]));
5430 return output_millicode_call (insn,
5431 gen_rtx_SYMBOL_REF (SImode, buf));
5435 sprintf (buf, "$$divI_" HOST_WIDE_INT_PRINT_DEC,
5436 INTVAL (operands[0]));
5437 return output_millicode_call (insn,
5438 gen_rtx_SYMBOL_REF (SImode, buf));
5441 /* Divisor isn't a special constant. */
5446 import_milli (divU);
5447 return output_millicode_call (insn,
5448 gen_rtx_SYMBOL_REF (SImode, "$$divU"));
5452 import_milli (divI);
5453 return output_millicode_call (insn,
5454 gen_rtx_SYMBOL_REF (SImode, "$$divI"));
5459 /* Output a $$rem millicode to do mod. */
5462 output_mod_insn (int unsignedp, rtx insn)
5466 import_milli (remU);
5467 return output_millicode_call (insn,
5468 gen_rtx_SYMBOL_REF (SImode, "$$remU"));
5472 import_milli (remI);
5473 return output_millicode_call (insn,
5474 gen_rtx_SYMBOL_REF (SImode, "$$remI"));
5479 output_arg_descriptor (rtx call_insn)
5481 const char *arg_regs[4];
5482 enum machine_mode arg_mode;
5484 int i, output_flag = 0;
5487 /* We neither need nor want argument location descriptors for the
5488 64bit runtime environment or the ELF32 environment. */
5489 if (TARGET_64BIT || TARGET_ELF32)
5492 for (i = 0; i < 4; i++)
5495 /* Specify explicitly that no argument relocations should take place
5496 if using the portable runtime calling conventions. */
5497 if (TARGET_PORTABLE_RUNTIME)
5499 fputs ("\t.CALL ARGW0=NO,ARGW1=NO,ARGW2=NO,ARGW3=NO,RETVAL=NO\n",
5504 gcc_assert (GET_CODE (call_insn) == CALL_INSN);
5505 for (link = CALL_INSN_FUNCTION_USAGE (call_insn);
5506 link; link = XEXP (link, 1))
5508 rtx use = XEXP (link, 0);
5510 if (! (GET_CODE (use) == USE
5511 && GET_CODE (XEXP (use, 0)) == REG
5512 && FUNCTION_ARG_REGNO_P (REGNO (XEXP (use, 0)))))
5515 arg_mode = GET_MODE (XEXP (use, 0));
5516 regno = REGNO (XEXP (use, 0));
5517 if (regno >= 23 && regno <= 26)
5519 arg_regs[26 - regno] = "GR";
5520 if (arg_mode == DImode)
5521 arg_regs[25 - regno] = "GR";
5523 else if (regno >= 32 && regno <= 39)
5525 if (arg_mode == SFmode)
5526 arg_regs[(regno - 32) / 2] = "FR";
5529 #ifndef HP_FP_ARG_DESCRIPTOR_REVERSED
5530 arg_regs[(regno - 34) / 2] = "FR";
5531 arg_regs[(regno - 34) / 2 + 1] = "FU";
5533 arg_regs[(regno - 34) / 2] = "FU";
5534 arg_regs[(regno - 34) / 2 + 1] = "FR";
5539 fputs ("\t.CALL ", asm_out_file);
5540 for (i = 0; i < 4; i++)
5545 fputc (',', asm_out_file);
5546 fprintf (asm_out_file, "ARGW%d=%s", i, arg_regs[i]);
5549 fputc ('\n', asm_out_file);
5552 /* Return the class of any secondary reload register that is needed to
5553 move IN into a register in class CLASS using mode MODE.
5555 Profiling has showed this routine and its descendants account for
5556 a significant amount of compile time (~7%). So it has been
5557 optimized to reduce redundant computations and eliminate useless
5560 It might be worthwhile to try and make this a leaf function too. */
5563 secondary_reload_class (enum reg_class class, enum machine_mode mode, rtx in)
5565 int regno, is_symbolic;
5567 /* Trying to load a constant into a FP register during PIC code
5568 generation will require %r1 as a scratch register. */
5570 && GET_MODE_CLASS (mode) == MODE_INT
5571 && FP_REG_CLASS_P (class)
5572 && (GET_CODE (in) == CONST_INT || GET_CODE (in) == CONST_DOUBLE))
5575 /* Profiling showed the PA port spends about 1.3% of its compilation
5576 time in true_regnum from calls inside secondary_reload_class. */
5578 if (GET_CODE (in) == REG)
5581 if (regno >= FIRST_PSEUDO_REGISTER)
5582 regno = true_regnum (in);
5584 else if (GET_CODE (in) == SUBREG)
5585 regno = true_regnum (in);
5589 /* If we have something like (mem (mem (...)), we can safely assume the
5590 inner MEM will end up in a general register after reloading, so there's
5591 no need for a secondary reload. */
5592 if (GET_CODE (in) == MEM
5593 && GET_CODE (XEXP (in, 0)) == MEM)
5596 /* Handle out of range displacement for integer mode loads/stores of
5598 if (((regno >= FIRST_PSEUDO_REGISTER || regno == -1)
5599 && GET_MODE_CLASS (mode) == MODE_INT
5600 && FP_REG_CLASS_P (class))
5601 || (class == SHIFT_REGS && (regno <= 0 || regno >= 32)))
5602 return GENERAL_REGS;
5604 /* A SAR<->FP register copy requires a secondary register (GPR) as
5605 well as secondary memory. */
5606 if (regno >= 0 && regno < FIRST_PSEUDO_REGISTER
5607 && ((REGNO_REG_CLASS (regno) == SHIFT_REGS && FP_REG_CLASS_P (class))
5608 || (class == SHIFT_REGS && FP_REG_CLASS_P (REGNO_REG_CLASS (regno)))))
5609 return GENERAL_REGS;
5611 if (GET_CODE (in) == HIGH)
5614 /* Profiling has showed GCC spends about 2.6% of its compilation
5615 time in symbolic_operand from calls inside secondary_reload_class.
5617 We use an inline copy and only compute its return value once to avoid
5619 switch (GET_CODE (in))
5629 is_symbolic = ((GET_CODE (XEXP (tmp, 0)) == SYMBOL_REF
5630 || GET_CODE (XEXP (tmp, 0)) == LABEL_REF)
5631 && GET_CODE (XEXP (tmp, 1)) == CONST_INT);
5641 && read_only_operand (in, VOIDmode))
5644 if (class != R1_REGS && is_symbolic)
5650 /* In the 32-bit runtime, arguments larger than eight bytes are passed
5651 by invisible reference. As a GCC extension, we also pass anything
5652 with a zero or variable size by reference.
5654 The 64-bit runtime does not describe passing any types by invisible
5655 reference. The internals of GCC can't currently handle passing
5656 empty structures, and zero or variable length arrays when they are
5657 not passed entirely on the stack or by reference. Thus, as a GCC
5658 extension, we pass these types by reference. The HP compiler doesn't
5659 support these types, so hopefully there shouldn't be any compatibility
5660 issues. This may have to be revisited when HP releases a C99 compiler
5661 or updates the ABI. */
5664 pa_pass_by_reference (CUMULATIVE_ARGS *ca ATTRIBUTE_UNUSED,
5665 enum machine_mode mode, tree type,
5666 bool named ATTRIBUTE_UNUSED)
5671 size = int_size_in_bytes (type);
5673 size = GET_MODE_SIZE (mode);
5678 return size <= 0 || size > 8;
5682 function_arg_padding (enum machine_mode mode, tree type)
5685 || (TARGET_64BIT && type && AGGREGATE_TYPE_P (type)))
5687 /* Return none if justification is not required. */
5689 && TREE_CODE (TYPE_SIZE (type)) == INTEGER_CST
5690 && (int_size_in_bytes (type) * BITS_PER_UNIT) % PARM_BOUNDARY == 0)
5693 /* The directions set here are ignored when a BLKmode argument larger
5694 than a word is placed in a register. Different code is used for
5695 the stack and registers. This makes it difficult to have a
5696 consistent data representation for both the stack and registers.
5697 For both runtimes, the justification and padding for arguments on
5698 the stack and in registers should be identical. */
5700 /* The 64-bit runtime specifies left justification for aggregates. */
5703 /* The 32-bit runtime architecture specifies right justification.
5704 When the argument is passed on the stack, the argument is padded
5705 with garbage on the left. The HP compiler pads with zeros. */
5709 if (GET_MODE_BITSIZE (mode) < PARM_BOUNDARY)
5716 /* Do what is necessary for `va_start'. We look at the current function
5717 to determine if stdargs or varargs is used and fill in an initial
5718 va_list. A pointer to this constructor is returned. */
5721 hppa_builtin_saveregs (void)
5724 tree fntype = TREE_TYPE (current_function_decl);
5725 int argadj = ((!(TYPE_ARG_TYPES (fntype) != 0
5726 && (TREE_VALUE (tree_last (TYPE_ARG_TYPES (fntype)))
5727 != void_type_node)))
5728 ? UNITS_PER_WORD : 0);
5731 offset = plus_constant (current_function_arg_offset_rtx, argadj);
5733 offset = current_function_arg_offset_rtx;
5739 /* Adjust for varargs/stdarg differences. */
5741 offset = plus_constant (current_function_arg_offset_rtx, -argadj);
5743 offset = current_function_arg_offset_rtx;
5745 /* We need to save %r26 .. %r19 inclusive starting at offset -64
5746 from the incoming arg pointer and growing to larger addresses. */
5747 for (i = 26, off = -64; i >= 19; i--, off += 8)
5748 emit_move_insn (gen_rtx_MEM (word_mode,
5749 plus_constant (arg_pointer_rtx, off)),
5750 gen_rtx_REG (word_mode, i));
5752 /* The incoming args pointer points just beyond the flushback area;
5753 normally this is not a serious concern. However, when we are doing
5754 varargs/stdargs we want to make the arg pointer point to the start
5755 of the incoming argument area. */
5756 emit_move_insn (virtual_incoming_args_rtx,
5757 plus_constant (arg_pointer_rtx, -64));
5759 /* Now return a pointer to the first anonymous argument. */
5760 return copy_to_reg (expand_binop (Pmode, add_optab,
5761 virtual_incoming_args_rtx,
5762 offset, 0, 0, OPTAB_LIB_WIDEN));
5765 /* Store general registers on the stack. */
5766 dest = gen_rtx_MEM (BLKmode,
5767 plus_constant (current_function_internal_arg_pointer,
5769 set_mem_alias_set (dest, get_varargs_alias_set ());
5770 set_mem_align (dest, BITS_PER_WORD);
5771 move_block_from_reg (23, dest, 4);
5773 /* move_block_from_reg will emit code to store the argument registers
5774 individually as scalar stores.
5776 However, other insns may later load from the same addresses for
5777 a structure load (passing a struct to a varargs routine).
5779 The alias code assumes that such aliasing can never happen, so we
5780 have to keep memory referencing insns from moving up beyond the
5781 last argument register store. So we emit a blockage insn here. */
5782 emit_insn (gen_blockage ());
5784 return copy_to_reg (expand_binop (Pmode, add_optab,
5785 current_function_internal_arg_pointer,
5786 offset, 0, 0, OPTAB_LIB_WIDEN));
5790 hppa_va_start (tree valist, rtx nextarg)
5792 nextarg = expand_builtin_saveregs ();
5793 std_expand_builtin_va_start (valist, nextarg);
5797 hppa_gimplify_va_arg_expr (tree valist, tree type, tree *pre_p, tree *post_p)
5801 /* Args grow upward. We can use the generic routines. */
5802 return std_gimplify_va_arg_expr (valist, type, pre_p, post_p);
5804 else /* !TARGET_64BIT */
5806 tree ptr = build_pointer_type (type);
5809 unsigned int size, ofs;
5812 indirect = pass_by_reference (NULL, TYPE_MODE (type), type, 0);
5816 ptr = build_pointer_type (type);
5818 size = int_size_in_bytes (type);
5819 valist_type = TREE_TYPE (valist);
5821 /* Args grow down. Not handled by generic routines. */
5823 u = fold_convert (valist_type, size_in_bytes (type));
5824 t = build (MINUS_EXPR, valist_type, valist, u);
5826 /* Copied from va-pa.h, but we probably don't need to align to
5827 word size, since we generate and preserve that invariant. */
5828 u = build_int_cst (valist_type, (size > 4 ? -8 : -4));
5829 t = build (BIT_AND_EXPR, valist_type, t, u);
5831 t = build (MODIFY_EXPR, valist_type, valist, t);
5833 ofs = (8 - size) % 4;
5836 u = fold_convert (valist_type, size_int (ofs));
5837 t = build (PLUS_EXPR, valist_type, t, u);
5840 t = fold_convert (ptr, t);
5841 t = build_va_arg_indirect_ref (t);
5844 t = build_va_arg_indirect_ref (t);
5850 /* True if MODE is valid for the target. By "valid", we mean able to
5851 be manipulated in non-trivial ways. In particular, this means all
5852 the arithmetic is supported.
5854 Currently, TImode is not valid as the HP 64-bit runtime documentation
5855 doesn't document the alignment and calling conventions for this type.
5856 Thus, we return false when PRECISION is 2 * BITS_PER_WORD and
5857 2 * BITS_PER_WORD isn't equal LONG_LONG_TYPE_SIZE. */
5860 pa_scalar_mode_supported_p (enum machine_mode mode)
5862 int precision = GET_MODE_PRECISION (mode);
5864 switch (GET_MODE_CLASS (mode))
5866 case MODE_PARTIAL_INT:
5868 if (precision == CHAR_TYPE_SIZE)
5870 if (precision == SHORT_TYPE_SIZE)
5872 if (precision == INT_TYPE_SIZE)
5874 if (precision == LONG_TYPE_SIZE)
5876 if (precision == LONG_LONG_TYPE_SIZE)
5881 if (precision == FLOAT_TYPE_SIZE)
5883 if (precision == DOUBLE_TYPE_SIZE)
5885 if (precision == LONG_DOUBLE_TYPE_SIZE)
5894 /* This routine handles all the normal conditional branch sequences we
5895 might need to generate. It handles compare immediate vs compare
5896 register, nullification of delay slots, varying length branches,
5897 negated branches, and all combinations of the above. It returns the
5898 output appropriate to emit the branch corresponding to all given
5902 output_cbranch (rtx *operands, int nullify, int length, int negated, rtx insn)
5904 static char buf[100];
5908 /* A conditional branch to the following instruction (e.g. the delay slot)
5909 is asking for a disaster. This can happen when not optimizing and
5910 when jump optimization fails.
5912 While it is usually safe to emit nothing, this can fail if the
5913 preceding instruction is a nullified branch with an empty delay
5914 slot and the same branch target as this branch. We could check
5915 for this but jump optimization should eliminate nop jumps. It
5916 is always safe to emit a nop. */
5917 if (next_real_insn (JUMP_LABEL (insn)) == next_real_insn (insn))
5920 /* The doubleword form of the cmpib instruction doesn't have the LEU
5921 and GTU conditions while the cmpb instruction does. Since we accept
5922 zero for cmpb, we must ensure that we use cmpb for the comparison. */
5923 if (GET_MODE (operands[1]) == DImode && operands[2] == const0_rtx)
5924 operands[2] = gen_rtx_REG (DImode, 0);
5925 if (GET_MODE (operands[2]) == DImode && operands[1] == const0_rtx)
5926 operands[1] = gen_rtx_REG (DImode, 0);
5928 /* If this is a long branch with its delay slot unfilled, set `nullify'
5929 as it can nullify the delay slot and save a nop. */
5930 if (length == 8 && dbr_sequence_length () == 0)
5933 /* If this is a short forward conditional branch which did not get
5934 its delay slot filled, the delay slot can still be nullified. */
5935 if (! nullify && length == 4 && dbr_sequence_length () == 0)
5936 nullify = forward_branch_p (insn);
5938 /* A forward branch over a single nullified insn can be done with a
5939 comclr instruction. This avoids a single cycle penalty due to
5940 mis-predicted branch if we fall through (branch not taken). */
5942 && next_real_insn (insn) != 0
5943 && get_attr_length (next_real_insn (insn)) == 4
5944 && JUMP_LABEL (insn) == next_nonnote_insn (next_real_insn (insn))
5950 /* All short conditional branches except backwards with an unfilled
5954 strcpy (buf, "{com%I2clr,|cmp%I2clr,}");
5956 strcpy (buf, "{com%I2b,|cmp%I2b,}");
5957 if (GET_MODE (operands[1]) == DImode)
5960 strcat (buf, "%B3");
5962 strcat (buf, "%S3");
5964 strcat (buf, " %2,%r1,%%r0");
5966 strcat (buf, ",n %2,%r1,%0");
5968 strcat (buf, " %2,%r1,%0");
5971 /* All long conditionals. Note a short backward branch with an
5972 unfilled delay slot is treated just like a long backward branch
5973 with an unfilled delay slot. */
5975 /* Handle weird backwards branch with a filled delay slot
5976 with is nullified. */
5977 if (dbr_sequence_length () != 0
5978 && ! forward_branch_p (insn)
5981 strcpy (buf, "{com%I2b,|cmp%I2b,}");
5982 if (GET_MODE (operands[1]) == DImode)
5985 strcat (buf, "%S3");
5987 strcat (buf, "%B3");
5988 strcat (buf, ",n %2,%r1,.+12\n\tb %0");
5990 /* Handle short backwards branch with an unfilled delay slot.
5991 Using a comb;nop rather than comiclr;bl saves 1 cycle for both
5992 taken and untaken branches. */
5993 else if (dbr_sequence_length () == 0
5994 && ! forward_branch_p (insn)
5995 && INSN_ADDRESSES_SET_P ()
5996 && VAL_14_BITS_P (INSN_ADDRESSES (INSN_UID (JUMP_LABEL (insn)))
5997 - INSN_ADDRESSES (INSN_UID (insn)) - 8))
5999 strcpy (buf, "{com%I2b,|cmp%I2b,}");
6000 if (GET_MODE (operands[1]) == DImode)
6003 strcat (buf, "%B3 %2,%r1,%0%#");
6005 strcat (buf, "%S3 %2,%r1,%0%#");
6009 strcpy (buf, "{com%I2clr,|cmp%I2clr,}");
6010 if (GET_MODE (operands[1]) == DImode)
6013 strcat (buf, "%S3");
6015 strcat (buf, "%B3");
6017 strcat (buf, " %2,%r1,%%r0\n\tb,n %0");
6019 strcat (buf, " %2,%r1,%%r0\n\tb %0");
6025 xoperands[0] = operands[0];
6026 xoperands[1] = operands[1];
6027 xoperands[2] = operands[2];
6028 xoperands[3] = operands[3];
6030 /* The reversed conditional branch must branch over one additional
6031 instruction if the delay slot is filled. If the delay slot
6032 is empty, the instruction after the reversed condition branch
6033 must be nullified. */
6034 nullify = dbr_sequence_length () == 0;
6035 xoperands[4] = nullify ? GEN_INT (length) : GEN_INT (length + 4);
6037 /* Create a reversed conditional branch which branches around
6038 the following insns. */
6039 if (GET_MODE (operands[1]) != DImode)
6045 "{com%I2b,%S3,n %2,%r1,.+%4|cmp%I2b,%S3,n %2,%r1,.+%4}");
6048 "{com%I2b,%B3,n %2,%r1,.+%4|cmp%I2b,%B3,n %2,%r1,.+%4}");
6054 "{com%I2b,%S3 %2,%r1,.+%4|cmp%I2b,%S3 %2,%r1,.+%4}");
6057 "{com%I2b,%B3 %2,%r1,.+%4|cmp%I2b,%B3 %2,%r1,.+%4}");
6066 "{com%I2b,*%S3,n %2,%r1,.+%4|cmp%I2b,*%S3,n %2,%r1,.+%4}");
6069 "{com%I2b,*%B3,n %2,%r1,.+%4|cmp%I2b,*%B3,n %2,%r1,.+%4}");
6075 "{com%I2b,*%S3 %2,%r1,.+%4|cmp%I2b,*%S3 %2,%r1,.+%4}");
6078 "{com%I2b,*%B3 %2,%r1,.+%4|cmp%I2b,*%B3 %2,%r1,.+%4}");
6082 output_asm_insn (buf, xoperands);
6083 return output_lbranch (operands[0], insn);
6091 /* This routine handles long unconditional branches that exceed the
6092 maximum range of a simple branch instruction. */
6095 output_lbranch (rtx dest, rtx insn)
6099 xoperands[0] = dest;
6101 /* First, free up the delay slot. */
6102 if (dbr_sequence_length () != 0)
6104 /* We can't handle a jump in the delay slot. */
6105 gcc_assert (GET_CODE (NEXT_INSN (insn)) != JUMP_INSN);
6107 final_scan_insn (NEXT_INSN (insn), asm_out_file,
6110 /* Now delete the delay insn. */
6111 PUT_CODE (NEXT_INSN (insn), NOTE);
6112 NOTE_LINE_NUMBER (NEXT_INSN (insn)) = NOTE_INSN_DELETED;
6113 NOTE_SOURCE_FILE (NEXT_INSN (insn)) = 0;
6116 /* Output an insn to save %r1. The runtime documentation doesn't
6117 specify whether the "Clean Up" slot in the callers frame can
6118 be clobbered by the callee. It isn't copied by HP's builtin
6119 alloca, so this suggests that it can be clobbered if necessary.
6120 The "Static Link" location is copied by HP builtin alloca, so
6121 we avoid using it. Using the cleanup slot might be a problem
6122 if we have to interoperate with languages that pass cleanup
6123 information. However, it should be possible to handle these
6124 situations with GCC's asm feature.
6126 The "Current RP" slot is reserved for the called procedure, so
6127 we try to use it when we don't have a frame of our own. It's
6128 rather unlikely that we won't have a frame when we need to emit
6131 Really the way to go long term is a register scavenger; goto
6132 the target of the jump and find a register which we can use
6133 as a scratch to hold the value in %r1. Then, we wouldn't have
6134 to free up the delay slot or clobber a slot that may be needed
6135 for other purposes. */
6138 if (actual_fsize == 0 && !regs_ever_live[2])
6139 /* Use the return pointer slot in the frame marker. */
6140 output_asm_insn ("std %%r1,-16(%%r30)", xoperands);
6142 /* Use the slot at -40 in the frame marker since HP builtin
6143 alloca doesn't copy it. */
6144 output_asm_insn ("std %%r1,-40(%%r30)", xoperands);
6148 if (actual_fsize == 0 && !regs_ever_live[2])
6149 /* Use the return pointer slot in the frame marker. */
6150 output_asm_insn ("stw %%r1,-20(%%r30)", xoperands);
6152 /* Use the "Clean Up" slot in the frame marker. In GCC,
6153 the only other use of this location is for copying a
6154 floating point double argument from a floating-point
6155 register to two general registers. The copy is done
6156 as an "atomic" operation when outputting a call, so it
6157 won't interfere with our using the location here. */
6158 output_asm_insn ("stw %%r1,-12(%%r30)", xoperands);
6161 if (TARGET_PORTABLE_RUNTIME)
6163 output_asm_insn ("ldil L'%0,%%r1", xoperands);
6164 output_asm_insn ("ldo R'%0(%%r1),%%r1", xoperands);
6165 output_asm_insn ("bv %%r0(%%r1)", xoperands);
6169 output_asm_insn ("{bl|b,l} .+8,%%r1", xoperands);
6170 if (TARGET_SOM || !TARGET_GAS)
6172 xoperands[1] = gen_label_rtx ();
6173 output_asm_insn ("addil L'%l0-%l1,%%r1", xoperands);
6174 (*targetm.asm_out.internal_label) (asm_out_file, "L",
6175 CODE_LABEL_NUMBER (xoperands[1]));
6176 output_asm_insn ("ldo R'%l0-%l1(%%r1),%%r1", xoperands);
6180 output_asm_insn ("addil L'%l0-$PIC_pcrel$0+4,%%r1", xoperands);
6181 output_asm_insn ("ldo R'%l0-$PIC_pcrel$0+8(%%r1),%%r1", xoperands);
6183 output_asm_insn ("bv %%r0(%%r1)", xoperands);
6186 /* Now output a very long branch to the original target. */
6187 output_asm_insn ("ldil L'%l0,%%r1\n\tbe R'%l0(%%sr4,%%r1)", xoperands);
6189 /* Now restore the value of %r1 in the delay slot. */
6192 if (actual_fsize == 0 && !regs_ever_live[2])
6193 return "ldd -16(%%r30),%%r1";
6195 return "ldd -40(%%r30),%%r1";
6199 if (actual_fsize == 0 && !regs_ever_live[2])
6200 return "ldw -20(%%r30),%%r1";
6202 return "ldw -12(%%r30),%%r1";
6206 /* This routine handles all the branch-on-bit conditional branch sequences we
6207 might need to generate. It handles nullification of delay slots,
6208 varying length branches, negated branches and all combinations of the
6209 above. it returns the appropriate output template to emit the branch. */
6212 output_bb (rtx *operands ATTRIBUTE_UNUSED, int nullify, int length,
6213 int negated, rtx insn, int which)
6215 static char buf[100];
6218 /* A conditional branch to the following instruction (e.g. the delay slot) is
6219 asking for a disaster. I do not think this can happen as this pattern
6220 is only used when optimizing; jump optimization should eliminate the
6221 jump. But be prepared just in case. */
6223 if (next_real_insn (JUMP_LABEL (insn)) == next_real_insn (insn))
6226 /* If this is a long branch with its delay slot unfilled, set `nullify'
6227 as it can nullify the delay slot and save a nop. */
6228 if (length == 8 && dbr_sequence_length () == 0)
6231 /* If this is a short forward conditional branch which did not get
6232 its delay slot filled, the delay slot can still be nullified. */
6233 if (! nullify && length == 4 && dbr_sequence_length () == 0)
6234 nullify = forward_branch_p (insn);
6236 /* A forward branch over a single nullified insn can be done with a
6237 extrs instruction. This avoids a single cycle penalty due to
6238 mis-predicted branch if we fall through (branch not taken). */
6241 && next_real_insn (insn) != 0
6242 && get_attr_length (next_real_insn (insn)) == 4
6243 && JUMP_LABEL (insn) == next_nonnote_insn (next_real_insn (insn))
6250 /* All short conditional branches except backwards with an unfilled
6254 strcpy (buf, "{extrs,|extrw,s,}");
6256 strcpy (buf, "bb,");
6257 if (useskip && GET_MODE (operands[0]) == DImode)
6258 strcpy (buf, "extrd,s,*");
6259 else if (GET_MODE (operands[0]) == DImode)
6260 strcpy (buf, "bb,*");
6261 if ((which == 0 && negated)
6262 || (which == 1 && ! negated))
6267 strcat (buf, " %0,%1,1,%%r0");
6268 else if (nullify && negated)
6269 strcat (buf, ",n %0,%1,%3");
6270 else if (nullify && ! negated)
6271 strcat (buf, ",n %0,%1,%2");
6272 else if (! nullify && negated)
6273 strcat (buf, "%0,%1,%3");
6274 else if (! nullify && ! negated)
6275 strcat (buf, " %0,%1,%2");
6278 /* All long conditionals. Note a short backward branch with an
6279 unfilled delay slot is treated just like a long backward branch
6280 with an unfilled delay slot. */
6282 /* Handle weird backwards branch with a filled delay slot
6283 with is nullified. */
6284 if (dbr_sequence_length () != 0
6285 && ! forward_branch_p (insn)
6288 strcpy (buf, "bb,");
6289 if (GET_MODE (operands[0]) == DImode)
6291 if ((which == 0 && negated)
6292 || (which == 1 && ! negated))
6297 strcat (buf, ",n %0,%1,.+12\n\tb %3");
6299 strcat (buf, ",n %0,%1,.+12\n\tb %2");
6301 /* Handle short backwards branch with an unfilled delay slot.
6302 Using a bb;nop rather than extrs;bl saves 1 cycle for both
6303 taken and untaken branches. */
6304 else if (dbr_sequence_length () == 0
6305 && ! forward_branch_p (insn)
6306 && INSN_ADDRESSES_SET_P ()
6307 && VAL_14_BITS_P (INSN_ADDRESSES (INSN_UID (JUMP_LABEL (insn)))
6308 - INSN_ADDRESSES (INSN_UID (insn)) - 8))
6310 strcpy (buf, "bb,");
6311 if (GET_MODE (operands[0]) == DImode)
6313 if ((which == 0 && negated)
6314 || (which == 1 && ! negated))
6319 strcat (buf, " %0,%1,%3%#");
6321 strcat (buf, " %0,%1,%2%#");
6325 strcpy (buf, "{extrs,|extrw,s,}");
6326 if (GET_MODE (operands[0]) == DImode)
6327 strcpy (buf, "extrd,s,*");
6328 if ((which == 0 && negated)
6329 || (which == 1 && ! negated))
6333 if (nullify && negated)
6334 strcat (buf, " %0,%1,1,%%r0\n\tb,n %3");
6335 else if (nullify && ! negated)
6336 strcat (buf, " %0,%1,1,%%r0\n\tb,n %2");
6338 strcat (buf, " %0,%1,1,%%r0\n\tb %3");
6340 strcat (buf, " %0,%1,1,%%r0\n\tb %2");
6350 /* This routine handles all the branch-on-variable-bit conditional branch
6351 sequences we might need to generate. It handles nullification of delay
6352 slots, varying length branches, negated branches and all combinations
6353 of the above. it returns the appropriate output template to emit the
6357 output_bvb (rtx *operands ATTRIBUTE_UNUSED, int nullify, int length,
6358 int negated, rtx insn, int which)
6360 static char buf[100];
6363 /* A conditional branch to the following instruction (e.g. the delay slot) is
6364 asking for a disaster. I do not think this can happen as this pattern
6365 is only used when optimizing; jump optimization should eliminate the
6366 jump. But be prepared just in case. */
6368 if (next_real_insn (JUMP_LABEL (insn)) == next_real_insn (insn))
6371 /* If this is a long branch with its delay slot unfilled, set `nullify'
6372 as it can nullify the delay slot and save a nop. */
6373 if (length == 8 && dbr_sequence_length () == 0)
6376 /* If this is a short forward conditional branch which did not get
6377 its delay slot filled, the delay slot can still be nullified. */
6378 if (! nullify && length == 4 && dbr_sequence_length () == 0)
6379 nullify = forward_branch_p (insn);
6381 /* A forward branch over a single nullified insn can be done with a
6382 extrs instruction. This avoids a single cycle penalty due to
6383 mis-predicted branch if we fall through (branch not taken). */
6386 && next_real_insn (insn) != 0
6387 && get_attr_length (next_real_insn (insn)) == 4
6388 && JUMP_LABEL (insn) == next_nonnote_insn (next_real_insn (insn))
6395 /* All short conditional branches except backwards with an unfilled
6399 strcpy (buf, "{vextrs,|extrw,s,}");
6401 strcpy (buf, "{bvb,|bb,}");
6402 if (useskip && GET_MODE (operands[0]) == DImode)
6403 strcpy (buf, "extrd,s,*");
6404 else if (GET_MODE (operands[0]) == DImode)
6405 strcpy (buf, "bb,*");
6406 if ((which == 0 && negated)
6407 || (which == 1 && ! negated))
6412 strcat (buf, "{ %0,1,%%r0| %0,%%sar,1,%%r0}");
6413 else if (nullify && negated)
6414 strcat (buf, "{,n %0,%3|,n %0,%%sar,%3}");
6415 else if (nullify && ! negated)
6416 strcat (buf, "{,n %0,%2|,n %0,%%sar,%2}");
6417 else if (! nullify && negated)
6418 strcat (buf, "{%0,%3|%0,%%sar,%3}");
6419 else if (! nullify && ! negated)
6420 strcat (buf, "{ %0,%2| %0,%%sar,%2}");
6423 /* All long conditionals. Note a short backward branch with an
6424 unfilled delay slot is treated just like a long backward branch
6425 with an unfilled delay slot. */
6427 /* Handle weird backwards branch with a filled delay slot
6428 with is nullified. */
6429 if (dbr_sequence_length () != 0
6430 && ! forward_branch_p (insn)
6433 strcpy (buf, "{bvb,|bb,}");
6434 if (GET_MODE (operands[0]) == DImode)
6436 if ((which == 0 && negated)
6437 || (which == 1 && ! negated))
6442 strcat (buf, "{,n %0,.+12\n\tb %3|,n %0,%%sar,.+12\n\tb %3}");
6444 strcat (buf, "{,n %0,.+12\n\tb %2|,n %0,%%sar,.+12\n\tb %2}");
6446 /* Handle short backwards branch with an unfilled delay slot.
6447 Using a bb;nop rather than extrs;bl saves 1 cycle for both
6448 taken and untaken branches. */
6449 else if (dbr_sequence_length () == 0
6450 && ! forward_branch_p (insn)
6451 && INSN_ADDRESSES_SET_P ()
6452 && VAL_14_BITS_P (INSN_ADDRESSES (INSN_UID (JUMP_LABEL (insn)))
6453 - INSN_ADDRESSES (INSN_UID (insn)) - 8))
6455 strcpy (buf, "{bvb,|bb,}");
6456 if (GET_MODE (operands[0]) == DImode)
6458 if ((which == 0 && negated)
6459 || (which == 1 && ! negated))
6464 strcat (buf, "{ %0,%3%#| %0,%%sar,%3%#}");
6466 strcat (buf, "{ %0,%2%#| %0,%%sar,%2%#}");
6470 strcpy (buf, "{vextrs,|extrw,s,}");
6471 if (GET_MODE (operands[0]) == DImode)
6472 strcpy (buf, "extrd,s,*");
6473 if ((which == 0 && negated)
6474 || (which == 1 && ! negated))
6478 if (nullify && negated)
6479 strcat (buf, "{ %0,1,%%r0\n\tb,n %3| %0,%%sar,1,%%r0\n\tb,n %3}");
6480 else if (nullify && ! negated)
6481 strcat (buf, "{ %0,1,%%r0\n\tb,n %2| %0,%%sar,1,%%r0\n\tb,n %2}");
6483 strcat (buf, "{ %0,1,%%r0\n\tb %3| %0,%%sar,1,%%r0\n\tb %3}");
6485 strcat (buf, "{ %0,1,%%r0\n\tb %2| %0,%%sar,1,%%r0\n\tb %2}");
6495 /* Return the output template for emitting a dbra type insn.
6497 Note it may perform some output operations on its own before
6498 returning the final output string. */
6500 output_dbra (rtx *operands, rtx insn, int which_alternative)
6503 /* A conditional branch to the following instruction (e.g. the delay slot) is
6504 asking for a disaster. Be prepared! */
6506 if (next_real_insn (JUMP_LABEL (insn)) == next_real_insn (insn))
6508 if (which_alternative == 0)
6509 return "ldo %1(%0),%0";
6510 else if (which_alternative == 1)
6512 output_asm_insn ("{fstws|fstw} %0,-16(%%r30)", operands);
6513 output_asm_insn ("ldw -16(%%r30),%4", operands);
6514 output_asm_insn ("ldo %1(%4),%4\n\tstw %4,-16(%%r30)", operands);
6515 return "{fldws|fldw} -16(%%r30),%0";
6519 output_asm_insn ("ldw %0,%4", operands);
6520 return "ldo %1(%4),%4\n\tstw %4,%0";
6524 if (which_alternative == 0)
6526 int nullify = INSN_ANNULLED_BRANCH_P (insn);
6527 int length = get_attr_length (insn);
6529 /* If this is a long branch with its delay slot unfilled, set `nullify'
6530 as it can nullify the delay slot and save a nop. */
6531 if (length == 8 && dbr_sequence_length () == 0)
6534 /* If this is a short forward conditional branch which did not get
6535 its delay slot filled, the delay slot can still be nullified. */
6536 if (! nullify && length == 4 && dbr_sequence_length () == 0)
6537 nullify = forward_branch_p (insn);
6543 return "addib,%C2,n %1,%0,%3";
6545 return "addib,%C2 %1,%0,%3";
6548 /* Handle weird backwards branch with a fulled delay slot
6549 which is nullified. */
6550 if (dbr_sequence_length () != 0
6551 && ! forward_branch_p (insn)
6553 return "addib,%N2,n %1,%0,.+12\n\tb %3";
6554 /* Handle short backwards branch with an unfilled delay slot.
6555 Using a addb;nop rather than addi;bl saves 1 cycle for both
6556 taken and untaken branches. */
6557 else if (dbr_sequence_length () == 0
6558 && ! forward_branch_p (insn)
6559 && INSN_ADDRESSES_SET_P ()
6560 && VAL_14_BITS_P (INSN_ADDRESSES (INSN_UID (JUMP_LABEL (insn)))
6561 - INSN_ADDRESSES (INSN_UID (insn)) - 8))
6562 return "addib,%C2 %1,%0,%3%#";
6564 /* Handle normal cases. */
6566 return "addi,%N2 %1,%0,%0\n\tb,n %3";
6568 return "addi,%N2 %1,%0,%0\n\tb %3";
6575 /* Deal with gross reload from FP register case. */
6576 else if (which_alternative == 1)
6578 /* Move loop counter from FP register to MEM then into a GR,
6579 increment the GR, store the GR into MEM, and finally reload
6580 the FP register from MEM from within the branch's delay slot. */
6581 output_asm_insn ("{fstws|fstw} %0,-16(%%r30)\n\tldw -16(%%r30),%4",
6583 output_asm_insn ("ldo %1(%4),%4\n\tstw %4,-16(%%r30)", operands);
6584 if (get_attr_length (insn) == 24)
6585 return "{comb|cmpb},%S2 %%r0,%4,%3\n\t{fldws|fldw} -16(%%r30),%0";
6587 return "{comclr|cmpclr},%B2 %%r0,%4,%%r0\n\tb %3\n\t{fldws|fldw} -16(%%r30),%0";
6589 /* Deal with gross reload from memory case. */
6592 /* Reload loop counter from memory, the store back to memory
6593 happens in the branch's delay slot. */
6594 output_asm_insn ("ldw %0,%4", operands);
6595 if (get_attr_length (insn) == 12)
6596 return "addib,%C2 %1,%4,%3\n\tstw %4,%0";
6598 return "addi,%N2 %1,%4,%4\n\tb %3\n\tstw %4,%0";
6602 /* Return the output template for emitting a dbra type insn.
6604 Note it may perform some output operations on its own before
6605 returning the final output string. */
6607 output_movb (rtx *operands, rtx insn, int which_alternative,
6608 int reverse_comparison)
6611 /* A conditional branch to the following instruction (e.g. the delay slot) is
6612 asking for a disaster. Be prepared! */
6614 if (next_real_insn (JUMP_LABEL (insn)) == next_real_insn (insn))
6616 if (which_alternative == 0)
6617 return "copy %1,%0";
6618 else if (which_alternative == 1)
6620 output_asm_insn ("stw %1,-16(%%r30)", operands);
6621 return "{fldws|fldw} -16(%%r30),%0";
6623 else if (which_alternative == 2)
6629 /* Support the second variant. */
6630 if (reverse_comparison)
6631 PUT_CODE (operands[2], reverse_condition (GET_CODE (operands[2])));
6633 if (which_alternative == 0)
6635 int nullify = INSN_ANNULLED_BRANCH_P (insn);
6636 int length = get_attr_length (insn);
6638 /* If this is a long branch with its delay slot unfilled, set `nullify'
6639 as it can nullify the delay slot and save a nop. */
6640 if (length == 8 && dbr_sequence_length () == 0)
6643 /* If this is a short forward conditional branch which did not get
6644 its delay slot filled, the delay slot can still be nullified. */
6645 if (! nullify && length == 4 && dbr_sequence_length () == 0)
6646 nullify = forward_branch_p (insn);
6652 return "movb,%C2,n %1,%0,%3";
6654 return "movb,%C2 %1,%0,%3";
6657 /* Handle weird backwards branch with a filled delay slot
6658 which is nullified. */
6659 if (dbr_sequence_length () != 0
6660 && ! forward_branch_p (insn)
6662 return "movb,%N2,n %1,%0,.+12\n\tb %3";
6664 /* Handle short backwards branch with an unfilled delay slot.
6665 Using a movb;nop rather than or;bl saves 1 cycle for both
6666 taken and untaken branches. */
6667 else if (dbr_sequence_length () == 0
6668 && ! forward_branch_p (insn)
6669 && INSN_ADDRESSES_SET_P ()
6670 && VAL_14_BITS_P (INSN_ADDRESSES (INSN_UID (JUMP_LABEL (insn)))
6671 - INSN_ADDRESSES (INSN_UID (insn)) - 8))
6672 return "movb,%C2 %1,%0,%3%#";
6673 /* Handle normal cases. */
6675 return "or,%N2 %1,%%r0,%0\n\tb,n %3";
6677 return "or,%N2 %1,%%r0,%0\n\tb %3";
6683 /* Deal with gross reload from FP register case. */
6684 else if (which_alternative == 1)
6686 /* Move loop counter from FP register to MEM then into a GR,
6687 increment the GR, store the GR into MEM, and finally reload
6688 the FP register from MEM from within the branch's delay slot. */
6689 output_asm_insn ("stw %1,-16(%%r30)", operands);
6690 if (get_attr_length (insn) == 12)
6691 return "{comb|cmpb},%S2 %%r0,%1,%3\n\t{fldws|fldw} -16(%%r30),%0";
6693 return "{comclr|cmpclr},%B2 %%r0,%1,%%r0\n\tb %3\n\t{fldws|fldw} -16(%%r30),%0";
6695 /* Deal with gross reload from memory case. */
6696 else if (which_alternative == 2)
6698 /* Reload loop counter from memory, the store back to memory
6699 happens in the branch's delay slot. */
6700 if (get_attr_length (insn) == 8)
6701 return "{comb|cmpb},%S2 %%r0,%1,%3\n\tstw %1,%0";
6703 return "{comclr|cmpclr},%B2 %%r0,%1,%%r0\n\tb %3\n\tstw %1,%0";
6705 /* Handle SAR as a destination. */
6708 if (get_attr_length (insn) == 8)
6709 return "{comb|cmpb},%S2 %%r0,%1,%3\n\tmtsar %r1";
6711 return "{comclr|cmpclr},%B2 %%r0,%1,%%r0\n\tb %3\n\tmtsar %r1";
6715 /* Copy any FP arguments in INSN into integer registers. */
6717 copy_fp_args (rtx insn)
6722 for (link = CALL_INSN_FUNCTION_USAGE (insn); link; link = XEXP (link, 1))
6724 int arg_mode, regno;
6725 rtx use = XEXP (link, 0);
6727 if (! (GET_CODE (use) == USE
6728 && GET_CODE (XEXP (use, 0)) == REG
6729 && FUNCTION_ARG_REGNO_P (REGNO (XEXP (use, 0)))))
6732 arg_mode = GET_MODE (XEXP (use, 0));
6733 regno = REGNO (XEXP (use, 0));
6735 /* Is it a floating point register? */
6736 if (regno >= 32 && regno <= 39)
6738 /* Copy the FP register into an integer register via memory. */
6739 if (arg_mode == SFmode)
6741 xoperands[0] = XEXP (use, 0);
6742 xoperands[1] = gen_rtx_REG (SImode, 26 - (regno - 32) / 2);
6743 output_asm_insn ("{fstws|fstw} %0,-16(%%sr0,%%r30)", xoperands);
6744 output_asm_insn ("ldw -16(%%sr0,%%r30),%1", xoperands);
6748 xoperands[0] = XEXP (use, 0);
6749 xoperands[1] = gen_rtx_REG (DImode, 25 - (regno - 34) / 2);
6750 output_asm_insn ("{fstds|fstd} %0,-16(%%sr0,%%r30)", xoperands);
6751 output_asm_insn ("ldw -12(%%sr0,%%r30),%R1", xoperands);
6752 output_asm_insn ("ldw -16(%%sr0,%%r30),%1", xoperands);
6758 /* Compute length of the FP argument copy sequence for INSN. */
6760 length_fp_args (rtx insn)
6765 for (link = CALL_INSN_FUNCTION_USAGE (insn); link; link = XEXP (link, 1))
6767 int arg_mode, regno;
6768 rtx use = XEXP (link, 0);
6770 if (! (GET_CODE (use) == USE
6771 && GET_CODE (XEXP (use, 0)) == REG
6772 && FUNCTION_ARG_REGNO_P (REGNO (XEXP (use, 0)))))
6775 arg_mode = GET_MODE (XEXP (use, 0));
6776 regno = REGNO (XEXP (use, 0));
6778 /* Is it a floating point register? */
6779 if (regno >= 32 && regno <= 39)
6781 if (arg_mode == SFmode)
6791 /* Return the attribute length for the millicode call instruction INSN.
6792 The length must match the code generated by output_millicode_call.
6793 We include the delay slot in the returned length as it is better to
6794 over estimate the length than to under estimate it. */
6797 attr_length_millicode_call (rtx insn)
6799 unsigned long distance = -1;
6800 unsigned long total = IN_NAMED_SECTION_P (cfun->decl) ? 0 : total_code_bytes;
6802 if (INSN_ADDRESSES_SET_P ())
6804 distance = (total + insn_current_reference_address (insn));
6805 if (distance < total)
6811 if (!TARGET_LONG_CALLS && distance < 7600000)
6816 else if (TARGET_PORTABLE_RUNTIME)
6820 if (!TARGET_LONG_CALLS && distance < 240000)
6823 if (TARGET_LONG_ABS_CALL && !flag_pic)
6830 /* INSN is a function call. It may have an unconditional jump
6833 CALL_DEST is the routine we are calling. */
6836 output_millicode_call (rtx insn, rtx call_dest)
6838 int attr_length = get_attr_length (insn);
6839 int seq_length = dbr_sequence_length ();
6844 xoperands[0] = call_dest;
6845 xoperands[2] = gen_rtx_REG (Pmode, TARGET_64BIT ? 2 : 31);
6847 /* Handle the common case where we are sure that the branch will
6848 reach the beginning of the $CODE$ subspace. The within reach
6849 form of the $$sh_func_adrs call has a length of 28. Because
6850 it has an attribute type of multi, it never has a nonzero
6851 sequence length. The length of the $$sh_func_adrs is the same
6852 as certain out of reach PIC calls to other routines. */
6853 if (!TARGET_LONG_CALLS
6854 && ((seq_length == 0
6855 && (attr_length == 12
6856 || (attr_length == 28 && get_attr_type (insn) == TYPE_MULTI)))
6857 || (seq_length != 0 && attr_length == 8)))
6859 output_asm_insn ("{bl|b,l} %0,%2", xoperands);
6865 /* It might seem that one insn could be saved by accessing
6866 the millicode function using the linkage table. However,
6867 this doesn't work in shared libraries and other dynamically
6868 loaded objects. Using a pc-relative sequence also avoids
6869 problems related to the implicit use of the gp register. */
6870 output_asm_insn ("b,l .+8,%%r1", xoperands);
6874 output_asm_insn ("addil L'%0-$PIC_pcrel$0+4,%%r1", xoperands);
6875 output_asm_insn ("ldo R'%0-$PIC_pcrel$0+8(%%r1),%%r1", xoperands);
6879 xoperands[1] = gen_label_rtx ();
6880 output_asm_insn ("addil L'%0-%l1,%%r1", xoperands);
6881 (*targetm.asm_out.internal_label) (asm_out_file, "L",
6882 CODE_LABEL_NUMBER (xoperands[1]));
6883 output_asm_insn ("ldo R'%0-%l1(%%r1),%%r1", xoperands);
6886 output_asm_insn ("bve,l (%%r1),%%r2", xoperands);
6888 else if (TARGET_PORTABLE_RUNTIME)
6890 /* Pure portable runtime doesn't allow be/ble; we also don't
6891 have PIC support in the assembler/linker, so this sequence
6894 /* Get the address of our target into %r1. */
6895 output_asm_insn ("ldil L'%0,%%r1", xoperands);
6896 output_asm_insn ("ldo R'%0(%%r1),%%r1", xoperands);
6898 /* Get our return address into %r31. */
6899 output_asm_insn ("{bl|b,l} .+8,%%r31", xoperands);
6900 output_asm_insn ("addi 8,%%r31,%%r31", xoperands);
6902 /* Jump to our target address in %r1. */
6903 output_asm_insn ("bv %%r0(%%r1)", xoperands);
6907 output_asm_insn ("ldil L'%0,%%r1", xoperands);
6909 output_asm_insn ("be,l R'%0(%%sr4,%%r1),%%sr0,%%r31", xoperands);
6911 output_asm_insn ("ble R'%0(%%sr4,%%r1)", xoperands);
6915 output_asm_insn ("{bl|b,l} .+8,%%r1", xoperands);
6916 output_asm_insn ("addi 16,%%r1,%%r31", xoperands);
6918 if (TARGET_SOM || !TARGET_GAS)
6920 /* The HP assembler can generate relocations for the
6921 difference of two symbols. GAS can do this for a
6922 millicode symbol but not an arbitrary external
6923 symbol when generating SOM output. */
6924 xoperands[1] = gen_label_rtx ();
6925 (*targetm.asm_out.internal_label) (asm_out_file, "L",
6926 CODE_LABEL_NUMBER (xoperands[1]));
6927 output_asm_insn ("addil L'%0-%l1,%%r1", xoperands);
6928 output_asm_insn ("ldo R'%0-%l1(%%r1),%%r1", xoperands);
6932 output_asm_insn ("addil L'%0-$PIC_pcrel$0+8,%%r1", xoperands);
6933 output_asm_insn ("ldo R'%0-$PIC_pcrel$0+12(%%r1),%%r1",
6937 /* Jump to our target address in %r1. */
6938 output_asm_insn ("bv %%r0(%%r1)", xoperands);
6942 if (seq_length == 0)
6943 output_asm_insn ("nop", xoperands);
6945 /* We are done if there isn't a jump in the delay slot. */
6946 if (seq_length == 0 || GET_CODE (NEXT_INSN (insn)) != JUMP_INSN)
6949 /* This call has an unconditional jump in its delay slot. */
6950 xoperands[0] = XEXP (PATTERN (NEXT_INSN (insn)), 1);
6952 /* See if the return address can be adjusted. Use the containing
6953 sequence insn's address. */
6954 if (INSN_ADDRESSES_SET_P ())
6956 seq_insn = NEXT_INSN (PREV_INSN (XVECEXP (final_sequence, 0, 0)));
6957 distance = (INSN_ADDRESSES (INSN_UID (JUMP_LABEL (NEXT_INSN (insn))))
6958 - INSN_ADDRESSES (INSN_UID (seq_insn)) - 8);
6960 if (VAL_14_BITS_P (distance))
6962 xoperands[1] = gen_label_rtx ();
6963 output_asm_insn ("ldo %0-%1(%2),%2", xoperands);
6964 (*targetm.asm_out.internal_label) (asm_out_file, "L",
6965 CODE_LABEL_NUMBER (xoperands[1]));
6968 /* ??? This branch may not reach its target. */
6969 output_asm_insn ("nop\n\tb,n %0", xoperands);
6972 /* ??? This branch may not reach its target. */
6973 output_asm_insn ("nop\n\tb,n %0", xoperands);
6975 /* Delete the jump. */
6976 PUT_CODE (NEXT_INSN (insn), NOTE);
6977 NOTE_LINE_NUMBER (NEXT_INSN (insn)) = NOTE_INSN_DELETED;
6978 NOTE_SOURCE_FILE (NEXT_INSN (insn)) = 0;
6983 /* Return the attribute length of the call instruction INSN. The SIBCALL
6984 flag indicates whether INSN is a regular call or a sibling call. The
6985 length returned must be longer than the code actually generated by
6986 output_call. Since branch shortening is done before delay branch
6987 sequencing, there is no way to determine whether or not the delay
6988 slot will be filled during branch shortening. Even when the delay
6989 slot is filled, we may have to add a nop if the delay slot contains
6990 a branch that can't reach its target. Thus, we always have to include
6991 the delay slot in the length estimate. This used to be done in
6992 pa_adjust_insn_length but we do it here now as some sequences always
6993 fill the delay slot and we can save four bytes in the estimate for
6997 attr_length_call (rtx insn, int sibcall)
7003 rtx pat = PATTERN (insn);
7004 unsigned long distance = -1;
7006 if (INSN_ADDRESSES_SET_P ())
7008 unsigned long total;
7010 total = IN_NAMED_SECTION_P (cfun->decl) ? 0 : total_code_bytes;
7011 distance = (total + insn_current_reference_address (insn));
7012 if (distance < total)
7016 /* Determine if this is a local call. */
7017 if (GET_CODE (XVECEXP (pat, 0, 0)) == CALL)
7018 call_dest = XEXP (XEXP (XVECEXP (pat, 0, 0), 0), 0);
7020 call_dest = XEXP (XEXP (XEXP (XVECEXP (pat, 0, 0), 1), 0), 0);
7022 call_decl = SYMBOL_REF_DECL (call_dest);
7023 local_call = call_decl && (*targetm.binds_local_p) (call_decl);
7025 /* pc-relative branch. */
7026 if (!TARGET_LONG_CALLS
7027 && ((TARGET_PA_20 && !sibcall && distance < 7600000)
7028 || distance < 240000))
7031 /* 64-bit plabel sequence. */
7032 else if (TARGET_64BIT && !local_call)
7033 length += sibcall ? 28 : 24;
7035 /* non-pic long absolute branch sequence. */
7036 else if ((TARGET_LONG_ABS_CALL || local_call) && !flag_pic)
7039 /* long pc-relative branch sequence. */
7040 else if ((TARGET_SOM && TARGET_LONG_PIC_SDIFF_CALL)
7041 || (TARGET_64BIT && !TARGET_GAS)
7042 || (TARGET_GAS && (TARGET_LONG_PIC_PCREL_CALL || local_call)))
7046 if (!TARGET_PA_20 && !TARGET_NO_SPACE_REGS)
7050 /* 32-bit plabel sequence. */
7056 length += length_fp_args (insn);
7066 if (!TARGET_NO_SPACE_REGS)
7074 /* INSN is a function call. It may have an unconditional jump
7077 CALL_DEST is the routine we are calling. */
7080 output_call (rtx insn, rtx call_dest, int sibcall)
7082 int delay_insn_deleted = 0;
7083 int delay_slot_filled = 0;
7084 int seq_length = dbr_sequence_length ();
7085 tree call_decl = SYMBOL_REF_DECL (call_dest);
7086 int local_call = call_decl && (*targetm.binds_local_p) (call_decl);
7089 xoperands[0] = call_dest;
7091 /* Handle the common case where we're sure that the branch will reach
7092 the beginning of the "$CODE$" subspace. This is the beginning of
7093 the current function if we are in a named section. */
7094 if (!TARGET_LONG_CALLS && attr_length_call (insn, sibcall) == 8)
7096 xoperands[1] = gen_rtx_REG (word_mode, sibcall ? 0 : 2);
7097 output_asm_insn ("{bl|b,l} %0,%1", xoperands);
7101 if (TARGET_64BIT && !local_call)
7103 /* ??? As far as I can tell, the HP linker doesn't support the
7104 long pc-relative sequence described in the 64-bit runtime
7105 architecture. So, we use a slightly longer indirect call. */
7106 struct deferred_plabel *p = get_plabel (call_dest);
7108 xoperands[0] = p->internal_label;
7109 xoperands[1] = gen_label_rtx ();
7111 /* If this isn't a sibcall, we put the load of %r27 into the
7112 delay slot. We can't do this in a sibcall as we don't
7113 have a second call-clobbered scratch register available. */
7115 && GET_CODE (NEXT_INSN (insn)) != JUMP_INSN
7118 final_scan_insn (NEXT_INSN (insn), asm_out_file,
7121 /* Now delete the delay insn. */
7122 PUT_CODE (NEXT_INSN (insn), NOTE);
7123 NOTE_LINE_NUMBER (NEXT_INSN (insn)) = NOTE_INSN_DELETED;
7124 NOTE_SOURCE_FILE (NEXT_INSN (insn)) = 0;
7125 delay_insn_deleted = 1;
7128 output_asm_insn ("addil LT'%0,%%r27", xoperands);
7129 output_asm_insn ("ldd RT'%0(%%r1),%%r1", xoperands);
7130 output_asm_insn ("ldd 0(%%r1),%%r1", xoperands);
7134 output_asm_insn ("ldd 24(%%r1),%%r27", xoperands);
7135 output_asm_insn ("ldd 16(%%r1),%%r1", xoperands);
7136 output_asm_insn ("bve (%%r1)", xoperands);
7140 output_asm_insn ("ldd 16(%%r1),%%r2", xoperands);
7141 output_asm_insn ("bve,l (%%r2),%%r2", xoperands);
7142 output_asm_insn ("ldd 24(%%r1),%%r27", xoperands);
7143 delay_slot_filled = 1;
7148 int indirect_call = 0;
7150 /* Emit a long call. There are several different sequences
7151 of increasing length and complexity. In most cases,
7152 they don't allow an instruction in the delay slot. */
7153 if (!((TARGET_LONG_ABS_CALL || local_call) && !flag_pic)
7154 && !(TARGET_SOM && TARGET_LONG_PIC_SDIFF_CALL)
7155 && !(TARGET_GAS && (TARGET_LONG_PIC_PCREL_CALL || local_call))
7160 && GET_CODE (NEXT_INSN (insn)) != JUMP_INSN
7162 && (!TARGET_PA_20 || indirect_call))
7164 /* A non-jump insn in the delay slot. By definition we can
7165 emit this insn before the call (and in fact before argument
7167 final_scan_insn (NEXT_INSN (insn), asm_out_file, optimize, 0,
7170 /* Now delete the delay insn. */
7171 PUT_CODE (NEXT_INSN (insn), NOTE);
7172 NOTE_LINE_NUMBER (NEXT_INSN (insn)) = NOTE_INSN_DELETED;
7173 NOTE_SOURCE_FILE (NEXT_INSN (insn)) = 0;
7174 delay_insn_deleted = 1;
7177 if ((TARGET_LONG_ABS_CALL || local_call) && !flag_pic)
7179 /* This is the best sequence for making long calls in
7180 non-pic code. Unfortunately, GNU ld doesn't provide
7181 the stub needed for external calls, and GAS's support
7182 for this with the SOM linker is buggy. It is safe
7183 to use this for local calls. */
7184 output_asm_insn ("ldil L'%0,%%r1", xoperands);
7186 output_asm_insn ("be R'%0(%%sr4,%%r1)", xoperands);
7190 output_asm_insn ("be,l R'%0(%%sr4,%%r1),%%sr0,%%r31",
7193 output_asm_insn ("ble R'%0(%%sr4,%%r1)", xoperands);
7195 output_asm_insn ("copy %%r31,%%r2", xoperands);
7196 delay_slot_filled = 1;
7201 if ((TARGET_SOM && TARGET_LONG_PIC_SDIFF_CALL)
7202 || (TARGET_64BIT && !TARGET_GAS))
7204 /* The HP assembler and linker can handle relocations
7205 for the difference of two symbols. GAS and the HP
7206 linker can't do this when one of the symbols is
7208 xoperands[1] = gen_label_rtx ();
7209 output_asm_insn ("{bl|b,l} .+8,%%r1", xoperands);
7210 output_asm_insn ("addil L'%0-%l1,%%r1", xoperands);
7211 (*targetm.asm_out.internal_label) (asm_out_file, "L",
7212 CODE_LABEL_NUMBER (xoperands[1]));
7213 output_asm_insn ("ldo R'%0-%l1(%%r1),%%r1", xoperands);
7215 else if (TARGET_GAS && (TARGET_LONG_PIC_PCREL_CALL || local_call))
7217 /* GAS currently can't generate the relocations that
7218 are needed for the SOM linker under HP-UX using this
7219 sequence. The GNU linker doesn't generate the stubs
7220 that are needed for external calls on TARGET_ELF32
7221 with this sequence. For now, we have to use a
7222 longer plabel sequence when using GAS. */
7223 output_asm_insn ("{bl|b,l} .+8,%%r1", xoperands);
7224 output_asm_insn ("addil L'%0-$PIC_pcrel$0+4,%%r1",
7226 output_asm_insn ("ldo R'%0-$PIC_pcrel$0+8(%%r1),%%r1",
7231 /* Emit a long plabel-based call sequence. This is
7232 essentially an inline implementation of $$dyncall.
7233 We don't actually try to call $$dyncall as this is
7234 as difficult as calling the function itself. */
7235 struct deferred_plabel *p = get_plabel (call_dest);
7237 xoperands[0] = p->internal_label;
7238 xoperands[1] = gen_label_rtx ();
7240 /* Since the call is indirect, FP arguments in registers
7241 need to be copied to the general registers. Then, the
7242 argument relocation stub will copy them back. */
7244 copy_fp_args (insn);
7248 output_asm_insn ("addil LT'%0,%%r19", xoperands);
7249 output_asm_insn ("ldw RT'%0(%%r1),%%r1", xoperands);
7250 output_asm_insn ("ldw 0(%%r1),%%r1", xoperands);
7254 output_asm_insn ("addil LR'%0-$global$,%%r27",
7256 output_asm_insn ("ldw RR'%0-$global$(%%r1),%%r1",
7260 output_asm_insn ("bb,>=,n %%r1,30,.+16", xoperands);
7261 output_asm_insn ("depi 0,31,2,%%r1", xoperands);
7262 output_asm_insn ("ldw 4(%%sr0,%%r1),%%r19", xoperands);
7263 output_asm_insn ("ldw 0(%%sr0,%%r1),%%r1", xoperands);
7265 if (!sibcall && !TARGET_PA_20)
7267 output_asm_insn ("{bl|b,l} .+8,%%r2", xoperands);
7268 if (TARGET_NO_SPACE_REGS)
7269 output_asm_insn ("addi 8,%%r2,%%r2", xoperands);
7271 output_asm_insn ("addi 16,%%r2,%%r2", xoperands);
7278 output_asm_insn ("bve (%%r1)", xoperands);
7283 output_asm_insn ("bve,l (%%r1),%%r2", xoperands);
7284 output_asm_insn ("stw %%r2,-24(%%sp)", xoperands);
7285 delay_slot_filled = 1;
7288 output_asm_insn ("bve,l (%%r1),%%r2", xoperands);
7293 if (!TARGET_NO_SPACE_REGS)
7294 output_asm_insn ("ldsid (%%r1),%%r31\n\tmtsp %%r31,%%sr0",
7299 if (TARGET_NO_SPACE_REGS)
7300 output_asm_insn ("be 0(%%sr4,%%r1)", xoperands);
7302 output_asm_insn ("be 0(%%sr0,%%r1)", xoperands);
7306 if (TARGET_NO_SPACE_REGS)
7307 output_asm_insn ("ble 0(%%sr4,%%r1)", xoperands);
7309 output_asm_insn ("ble 0(%%sr0,%%r1)", xoperands);
7312 output_asm_insn ("stw %%r31,-24(%%sp)", xoperands);
7314 output_asm_insn ("copy %%r31,%%r2", xoperands);
7315 delay_slot_filled = 1;
7322 if (!delay_slot_filled && (seq_length == 0 || delay_insn_deleted))
7323 output_asm_insn ("nop", xoperands);
7325 /* We are done if there isn't a jump in the delay slot. */
7327 || delay_insn_deleted
7328 || GET_CODE (NEXT_INSN (insn)) != JUMP_INSN)
7331 /* A sibcall should never have a branch in the delay slot. */
7332 gcc_assert (!sibcall);
7334 /* This call has an unconditional jump in its delay slot. */
7335 xoperands[0] = XEXP (PATTERN (NEXT_INSN (insn)), 1);
7337 if (!delay_slot_filled && INSN_ADDRESSES_SET_P ())
7339 /* See if the return address can be adjusted. Use the containing
7340 sequence insn's address. */
7341 rtx seq_insn = NEXT_INSN (PREV_INSN (XVECEXP (final_sequence, 0, 0)));
7342 int distance = (INSN_ADDRESSES (INSN_UID (JUMP_LABEL (NEXT_INSN (insn))))
7343 - INSN_ADDRESSES (INSN_UID (seq_insn)) - 8);
7345 if (VAL_14_BITS_P (distance))
7347 xoperands[1] = gen_label_rtx ();
7348 output_asm_insn ("ldo %0-%1(%%r2),%%r2", xoperands);
7349 (*targetm.asm_out.internal_label) (asm_out_file, "L",
7350 CODE_LABEL_NUMBER (xoperands[1]));
7353 output_asm_insn ("nop\n\tb,n %0", xoperands);
7356 output_asm_insn ("b,n %0", xoperands);
7358 /* Delete the jump. */
7359 PUT_CODE (NEXT_INSN (insn), NOTE);
7360 NOTE_LINE_NUMBER (NEXT_INSN (insn)) = NOTE_INSN_DELETED;
7361 NOTE_SOURCE_FILE (NEXT_INSN (insn)) = 0;
7366 /* Return the attribute length of the indirect call instruction INSN.
7367 The length must match the code generated by output_indirect call.
7368 The returned length includes the delay slot. Currently, the delay
7369 slot of an indirect call sequence is not exposed and it is used by
7370 the sequence itself. */
7373 attr_length_indirect_call (rtx insn)
7375 unsigned long distance = -1;
7376 unsigned long total = IN_NAMED_SECTION_P (cfun->decl) ? 0 : total_code_bytes;
7378 if (INSN_ADDRESSES_SET_P ())
7380 distance = (total + insn_current_reference_address (insn));
7381 if (distance < total)
7388 if (TARGET_FAST_INDIRECT_CALLS
7389 || (!TARGET_PORTABLE_RUNTIME
7390 && ((TARGET_PA_20 && distance < 7600000) || distance < 240000)))
7396 if (TARGET_PORTABLE_RUNTIME)
7399 /* Out of reach, can use ble. */
7404 output_indirect_call (rtx insn, rtx call_dest)
7410 xoperands[0] = call_dest;
7411 output_asm_insn ("ldd 16(%0),%%r2", xoperands);
7412 output_asm_insn ("bve,l (%%r2),%%r2\n\tldd 24(%0),%%r27", xoperands);
7416 /* First the special case for kernels, level 0 systems, etc. */
7417 if (TARGET_FAST_INDIRECT_CALLS)
7418 return "ble 0(%%sr4,%%r22)\n\tcopy %%r31,%%r2";
7420 /* Now the normal case -- we can reach $$dyncall directly or
7421 we're sure that we can get there via a long-branch stub.
7423 No need to check target flags as the length uniquely identifies
7424 the remaining cases. */
7425 if (attr_length_indirect_call (insn) == 8)
7427 /* The HP linker substitutes a BLE for millicode calls using
7428 the short PIC PCREL form. Thus, we must use %r31 as the
7429 link register when generating PA 1.x code. */
7431 return ".CALL\tARGW0=GR\n\tb,l $$dyncall,%%r2\n\tcopy %%r2,%%r31";
7433 return ".CALL\tARGW0=GR\n\tbl $$dyncall,%%r31\n\tcopy %%r31,%%r2";
7436 /* Long millicode call, but we are not generating PIC or portable runtime
7438 if (attr_length_indirect_call (insn) == 12)
7439 return ".CALL\tARGW0=GR\n\tldil L'$$dyncall,%%r2\n\tble R'$$dyncall(%%sr4,%%r2)\n\tcopy %%r31,%%r2";
7441 /* Long millicode call for portable runtime. */
7442 if (attr_length_indirect_call (insn) == 20)
7443 return "ldil L'$$dyncall,%%r31\n\tldo R'$$dyncall(%%r31),%%r31\n\tblr %%r0,%%r2\n\tbv,n %%r0(%%r31)\n\tnop";
7445 /* We need a long PIC call to $$dyncall. */
7446 xoperands[0] = NULL_RTX;
7447 output_asm_insn ("{bl|b,l} .+8,%%r1", xoperands);
7448 if (TARGET_SOM || !TARGET_GAS)
7450 xoperands[0] = gen_label_rtx ();
7451 output_asm_insn ("addil L'$$dyncall-%0,%%r1", xoperands);
7452 (*targetm.asm_out.internal_label) (asm_out_file, "L",
7453 CODE_LABEL_NUMBER (xoperands[0]));
7454 output_asm_insn ("ldo R'$$dyncall-%0(%%r1),%%r1", xoperands);
7458 output_asm_insn ("addil L'$$dyncall-$PIC_pcrel$0+4,%%r1", xoperands);
7459 output_asm_insn ("ldo R'$$dyncall-$PIC_pcrel$0+8(%%r1),%%r1",
7462 output_asm_insn ("blr %%r0,%%r2", xoperands);
7463 output_asm_insn ("bv,n %%r0(%%r1)\n\tnop", xoperands);
7467 /* Return the total length of the save and restore instructions needed for
7468 the data linkage table pointer (i.e., the PIC register) across the call
7469 instruction INSN. No-return calls do not require a save and restore.
7470 In addition, we may be able to avoid the save and restore for calls
7471 within the same translation unit. */
7474 attr_length_save_restore_dltp (rtx insn)
7476 if (find_reg_note (insn, REG_NORETURN, NULL_RTX))
7482 /* In HPUX 8.0's shared library scheme, special relocations are needed
7483 for function labels if they might be passed to a function
7484 in a shared library (because shared libraries don't live in code
7485 space), and special magic is needed to construct their address. */
7488 hppa_encode_label (rtx sym)
7490 const char *str = XSTR (sym, 0);
7491 int len = strlen (str) + 1;
7494 p = newstr = alloca (len + 1);
7498 XSTR (sym, 0) = ggc_alloc_string (newstr, len);
7502 pa_encode_section_info (tree decl, rtx rtl, int first)
7504 default_encode_section_info (decl, rtl, first);
7506 if (first && TEXT_SPACE_P (decl))
7508 SYMBOL_REF_FLAG (XEXP (rtl, 0)) = 1;
7509 if (TREE_CODE (decl) == FUNCTION_DECL)
7510 hppa_encode_label (XEXP (rtl, 0));
7514 /* This is sort of inverse to pa_encode_section_info. */
7517 pa_strip_name_encoding (const char *str)
7519 str += (*str == '@');
7520 str += (*str == '*');
7525 function_label_operand (rtx op, enum machine_mode mode ATTRIBUTE_UNUSED)
7527 return GET_CODE (op) == SYMBOL_REF && FUNCTION_NAME_P (XSTR (op, 0));
7530 /* Returns 1 if OP is a function label involved in a simple addition
7531 with a constant. Used to keep certain patterns from matching
7532 during instruction combination. */
7534 is_function_label_plus_const (rtx op)
7536 /* Strip off any CONST. */
7537 if (GET_CODE (op) == CONST)
7540 return (GET_CODE (op) == PLUS
7541 && function_label_operand (XEXP (op, 0), Pmode)
7542 && GET_CODE (XEXP (op, 1)) == CONST_INT);
7545 /* Output assembly code for a thunk to FUNCTION. */
7548 pa_asm_output_mi_thunk (FILE *file, tree thunk_fndecl, HOST_WIDE_INT delta,
7549 HOST_WIDE_INT vcall_offset ATTRIBUTE_UNUSED,
7552 static unsigned int current_thunk_number;
7553 int val_14 = VAL_14_BITS_P (delta);
7558 xoperands[0] = XEXP (DECL_RTL (function), 0);
7559 xoperands[1] = XEXP (DECL_RTL (thunk_fndecl), 0);
7560 xoperands[2] = GEN_INT (delta);
7562 ASM_OUTPUT_LABEL (file, XSTR (xoperands[1], 0));
7563 fprintf (file, "\t.PROC\n\t.CALLINFO FRAME=0,NO_CALLS\n\t.ENTRY\n");
7565 /* Output the thunk. We know that the function is in the same
7566 translation unit (i.e., the same space) as the thunk, and that
7567 thunks are output after their method. Thus, we don't need an
7568 external branch to reach the function. With SOM and GAS,
7569 functions and thunks are effectively in different sections.
7570 Thus, we can always use a IA-relative branch and the linker
7571 will add a long branch stub if necessary.
7573 However, we have to be careful when generating PIC code on the
7574 SOM port to ensure that the sequence does not transfer to an
7575 import stub for the target function as this could clobber the
7576 return value saved at SP-24. This would also apply to the
7577 32-bit linux port if the multi-space model is implemented. */
7578 if ((!TARGET_LONG_CALLS && TARGET_SOM && !TARGET_PORTABLE_RUNTIME
7579 && !(flag_pic && TREE_PUBLIC (function))
7580 && (TARGET_GAS || last_address < 262132))
7581 || (!TARGET_LONG_CALLS && !TARGET_SOM && !TARGET_PORTABLE_RUNTIME
7582 && ((targetm.have_named_sections
7583 && DECL_SECTION_NAME (thunk_fndecl) != NULL
7584 /* The GNU 64-bit linker has rather poor stub management.
7585 So, we use a long branch from thunks that aren't in
7586 the same section as the target function. */
7588 && (DECL_SECTION_NAME (thunk_fndecl)
7589 != DECL_SECTION_NAME (function)))
7590 || ((DECL_SECTION_NAME (thunk_fndecl)
7591 == DECL_SECTION_NAME (function))
7592 && last_address < 262132)))
7593 || (!targetm.have_named_sections && last_address < 262132))))
7596 output_asm_insn ("addil L'%2,%%r26", xoperands);
7598 output_asm_insn ("b %0", xoperands);
7602 output_asm_insn ("ldo %2(%%r26),%%r26", xoperands);
7607 output_asm_insn ("ldo R'%2(%%r1),%%r26", xoperands);
7611 else if (TARGET_64BIT)
7613 /* We only have one call-clobbered scratch register, so we can't
7614 make use of the delay slot if delta doesn't fit in 14 bits. */
7617 output_asm_insn ("addil L'%2,%%r26", xoperands);
7618 output_asm_insn ("ldo R'%2(%%r1),%%r26", xoperands);
7621 output_asm_insn ("b,l .+8,%%r1", xoperands);
7625 output_asm_insn ("addil L'%0-$PIC_pcrel$0+4,%%r1", xoperands);
7626 output_asm_insn ("ldo R'%0-$PIC_pcrel$0+8(%%r1),%%r1", xoperands);
7630 xoperands[3] = GEN_INT (val_14 ? 8 : 16);
7631 output_asm_insn ("addil L'%0-%1-%3,%%r1", xoperands);
7636 output_asm_insn ("bv %%r0(%%r1)", xoperands);
7637 output_asm_insn ("ldo %2(%%r26),%%r26", xoperands);
7642 output_asm_insn ("bv,n %%r0(%%r1)", xoperands);
7646 else if (TARGET_PORTABLE_RUNTIME)
7648 output_asm_insn ("ldil L'%0,%%r1", xoperands);
7649 output_asm_insn ("ldo R'%0(%%r1),%%r22", xoperands);
7652 output_asm_insn ("addil L'%2,%%r26", xoperands);
7654 output_asm_insn ("bv %%r0(%%r22)", xoperands);
7658 output_asm_insn ("ldo %2(%%r26),%%r26", xoperands);
7663 output_asm_insn ("ldo R'%2(%%r1),%%r26", xoperands);
7667 else if (TARGET_SOM && flag_pic && TREE_PUBLIC (function))
7669 /* The function is accessible from outside this module. The only
7670 way to avoid an import stub between the thunk and function is to
7671 call the function directly with an indirect sequence similar to
7672 that used by $$dyncall. This is possible because $$dyncall acts
7673 as the import stub in an indirect call. */
7674 ASM_GENERATE_INTERNAL_LABEL (label, "LTHN", current_thunk_number);
7675 xoperands[3] = gen_rtx_SYMBOL_REF (Pmode, label);
7676 output_asm_insn ("addil LT'%3,%%r19", xoperands);
7677 output_asm_insn ("ldw RT'%3(%%r1),%%r22", xoperands);
7678 output_asm_insn ("ldw 0(%%sr0,%%r22),%%r22", xoperands);
7679 output_asm_insn ("bb,>=,n %%r22,30,.+16", xoperands);
7680 output_asm_insn ("depi 0,31,2,%%r22", xoperands);
7681 output_asm_insn ("ldw 4(%%sr0,%%r22),%%r19", xoperands);
7682 output_asm_insn ("ldw 0(%%sr0,%%r22),%%r22", xoperands);
7686 output_asm_insn ("addil L'%2,%%r26", xoperands);
7692 output_asm_insn ("bve (%%r22)", xoperands);
7695 else if (TARGET_NO_SPACE_REGS)
7697 output_asm_insn ("be 0(%%sr4,%%r22)", xoperands);
7702 output_asm_insn ("ldsid (%%sr0,%%r22),%%r21", xoperands);
7703 output_asm_insn ("mtsp %%r21,%%sr0", xoperands);
7704 output_asm_insn ("be 0(%%sr0,%%r22)", xoperands);
7709 output_asm_insn ("ldo %2(%%r26),%%r26", xoperands);
7711 output_asm_insn ("ldo R'%2(%%r1),%%r26", xoperands);
7715 output_asm_insn ("{bl|b,l} .+8,%%r1", xoperands);
7717 if (TARGET_SOM || !TARGET_GAS)
7719 output_asm_insn ("addil L'%0-%1-8,%%r1", xoperands);
7720 output_asm_insn ("ldo R'%0-%1-8(%%r1),%%r22", xoperands);
7724 output_asm_insn ("addil L'%0-$PIC_pcrel$0+4,%%r1", xoperands);
7725 output_asm_insn ("ldo R'%0-$PIC_pcrel$0+8(%%r1),%%r22", xoperands);
7729 output_asm_insn ("addil L'%2,%%r26", xoperands);
7731 output_asm_insn ("bv %%r0(%%r22)", xoperands);
7735 output_asm_insn ("ldo %2(%%r26),%%r26", xoperands);
7740 output_asm_insn ("ldo R'%2(%%r1),%%r26", xoperands);
7747 output_asm_insn ("addil L'%2,%%r26", xoperands);
7749 output_asm_insn ("ldil L'%0,%%r22", xoperands);
7750 output_asm_insn ("be R'%0(%%sr4,%%r22)", xoperands);
7754 output_asm_insn ("ldo %2(%%r26),%%r26", xoperands);
7759 output_asm_insn ("ldo R'%2(%%r1),%%r26", xoperands);
7764 fprintf (file, "\t.EXIT\n\t.PROCEND\n");
7766 if (TARGET_SOM && flag_pic && TREE_PUBLIC (function))
7769 output_asm_insn (".align 4", xoperands);
7770 ASM_OUTPUT_LABEL (file, label);
7771 output_asm_insn (".word P'%0", xoperands);
7773 else if (TARGET_SOM && TARGET_GAS)
7776 current_thunk_number++;
7777 nbytes = ((nbytes + FUNCTION_BOUNDARY / BITS_PER_UNIT - 1)
7778 & ~(FUNCTION_BOUNDARY / BITS_PER_UNIT - 1));
7779 last_address += nbytes;
7780 update_total_code_bytes (nbytes);
7783 /* Only direct calls to static functions are allowed to be sibling (tail)
7786 This restriction is necessary because some linker generated stubs will
7787 store return pointers into rp' in some cases which might clobber a
7788 live value already in rp'.
7790 In a sibcall the current function and the target function share stack
7791 space. Thus if the path to the current function and the path to the
7792 target function save a value in rp', they save the value into the
7793 same stack slot, which has undesirable consequences.
7795 Because of the deferred binding nature of shared libraries any function
7796 with external scope could be in a different load module and thus require
7797 rp' to be saved when calling that function. So sibcall optimizations
7798 can only be safe for static function.
7800 Note that GCC never needs return value relocations, so we don't have to
7801 worry about static calls with return value relocations (which require
7804 It is safe to perform a sibcall optimization when the target function
7805 will never return. */
7807 pa_function_ok_for_sibcall (tree decl, tree exp ATTRIBUTE_UNUSED)
7809 if (TARGET_PORTABLE_RUNTIME)
7812 /* Sibcalls are ok for TARGET_ELF32 as along as the linker is used in
7813 single subspace mode and the call is not indirect. As far as I know,
7814 there is no operating system support for the multiple subspace mode.
7815 It might be possible to support indirect calls if we didn't use
7816 $$dyncall (see the indirect sequence generated in output_call). */
7818 return (decl != NULL_TREE);
7820 /* Sibcalls are not ok because the arg pointer register is not a fixed
7821 register. This prevents the sibcall optimization from occurring. In
7822 addition, there are problems with stub placement using GNU ld. This
7823 is because a normal sibcall branch uses a 17-bit relocation while
7824 a regular call branch uses a 22-bit relocation. As a result, more
7825 care needs to be taken in the placement of long-branch stubs. */
7829 /* Sibcalls are only ok within a translation unit. */
7830 return (decl && !TREE_PUBLIC (decl));
7833 /* ??? Addition is not commutative on the PA due to the weird implicit
7834 space register selection rules for memory addresses. Therefore, we
7835 don't consider a + b == b + a, as this might be inside a MEM. */
7837 pa_commutative_p (rtx x, int outer_code)
7839 return (COMMUTATIVE_P (x)
7840 && (TARGET_NO_SPACE_REGS
7841 || (outer_code != UNKNOWN && outer_code != MEM)
7842 || GET_CODE (x) != PLUS));
7845 /* Returns 1 if the 6 operands specified in OPERANDS are suitable for
7846 use in fmpyadd instructions. */
7848 fmpyaddoperands (rtx *operands)
7850 enum machine_mode mode = GET_MODE (operands[0]);
7852 /* Must be a floating point mode. */
7853 if (mode != SFmode && mode != DFmode)
7856 /* All modes must be the same. */
7857 if (! (mode == GET_MODE (operands[1])
7858 && mode == GET_MODE (operands[2])
7859 && mode == GET_MODE (operands[3])
7860 && mode == GET_MODE (operands[4])
7861 && mode == GET_MODE (operands[5])))
7864 /* All operands must be registers. */
7865 if (! (GET_CODE (operands[1]) == REG
7866 && GET_CODE (operands[2]) == REG
7867 && GET_CODE (operands[3]) == REG
7868 && GET_CODE (operands[4]) == REG
7869 && GET_CODE (operands[5]) == REG))
7872 /* Only 2 real operands to the addition. One of the input operands must
7873 be the same as the output operand. */
7874 if (! rtx_equal_p (operands[3], operands[4])
7875 && ! rtx_equal_p (operands[3], operands[5]))
7878 /* Inout operand of add cannot conflict with any operands from multiply. */
7879 if (rtx_equal_p (operands[3], operands[0])
7880 || rtx_equal_p (operands[3], operands[1])
7881 || rtx_equal_p (operands[3], operands[2]))
7884 /* multiply cannot feed into addition operands. */
7885 if (rtx_equal_p (operands[4], operands[0])
7886 || rtx_equal_p (operands[5], operands[0]))
7889 /* SFmode limits the registers to the upper 32 of the 32bit FP regs. */
7891 && (REGNO_REG_CLASS (REGNO (operands[0])) != FPUPPER_REGS
7892 || REGNO_REG_CLASS (REGNO (operands[1])) != FPUPPER_REGS
7893 || REGNO_REG_CLASS (REGNO (operands[2])) != FPUPPER_REGS
7894 || REGNO_REG_CLASS (REGNO (operands[3])) != FPUPPER_REGS
7895 || REGNO_REG_CLASS (REGNO (operands[4])) != FPUPPER_REGS
7896 || REGNO_REG_CLASS (REGNO (operands[5])) != FPUPPER_REGS))
7899 /* Passed. Operands are suitable for fmpyadd. */
7903 #if !defined(USE_COLLECT2)
7905 pa_asm_out_constructor (rtx symbol, int priority)
7907 if (!function_label_operand (symbol, VOIDmode))
7908 hppa_encode_label (symbol);
7910 #ifdef CTORS_SECTION_ASM_OP
7911 default_ctor_section_asm_out_constructor (symbol, priority);
7913 # ifdef TARGET_ASM_NAMED_SECTION
7914 default_named_section_asm_out_constructor (symbol, priority);
7916 default_stabs_asm_out_constructor (symbol, priority);
7922 pa_asm_out_destructor (rtx symbol, int priority)
7924 if (!function_label_operand (symbol, VOIDmode))
7925 hppa_encode_label (symbol);
7927 #ifdef DTORS_SECTION_ASM_OP
7928 default_dtor_section_asm_out_destructor (symbol, priority);
7930 # ifdef TARGET_ASM_NAMED_SECTION
7931 default_named_section_asm_out_destructor (symbol, priority);
7933 default_stabs_asm_out_destructor (symbol, priority);
7939 /* This function places uninitialized global data in the bss section.
7940 The ASM_OUTPUT_ALIGNED_BSS macro needs to be defined to call this
7941 function on the SOM port to prevent uninitialized global data from
7942 being placed in the data section. */
7945 pa_asm_output_aligned_bss (FILE *stream,
7947 unsigned HOST_WIDE_INT size,
7951 fprintf (stream, "\t.align %u\n", align / BITS_PER_UNIT);
7953 #ifdef ASM_OUTPUT_TYPE_DIRECTIVE
7954 ASM_OUTPUT_TYPE_DIRECTIVE (stream, name, "object");
7957 #ifdef ASM_OUTPUT_SIZE_DIRECTIVE
7958 ASM_OUTPUT_SIZE_DIRECTIVE (stream, name, size);
7961 fprintf (stream, "\t.align %u\n", align / BITS_PER_UNIT);
7962 ASM_OUTPUT_LABEL (stream, name);
7963 fprintf (stream, "\t.block "HOST_WIDE_INT_PRINT_UNSIGNED"\n", size);
7966 /* Both the HP and GNU assemblers under HP-UX provide a .comm directive
7967 that doesn't allow the alignment of global common storage to be directly
7968 specified. The SOM linker aligns common storage based on the rounded
7969 value of the NUM_BYTES parameter in the .comm directive. It's not
7970 possible to use the .align directive as it doesn't affect the alignment
7971 of the label associated with a .comm directive. */
7974 pa_asm_output_aligned_common (FILE *stream,
7976 unsigned HOST_WIDE_INT size,
7979 unsigned int max_common_align;
7981 max_common_align = TARGET_64BIT ? 128 : (size >= 4096 ? 256 : 64);
7982 if (align > max_common_align)
7984 warning (0, "alignment (%u) for %s exceeds maximum alignment "
7985 "for global common data. Using %u",
7986 align / BITS_PER_UNIT, name, max_common_align / BITS_PER_UNIT);
7987 align = max_common_align;
7992 assemble_name (stream, name);
7993 fprintf (stream, "\t.comm "HOST_WIDE_INT_PRINT_UNSIGNED"\n",
7994 MAX (size, align / BITS_PER_UNIT));
7997 /* We can't use .comm for local common storage as the SOM linker effectively
7998 treats the symbol as universal and uses the same storage for local symbols
7999 with the same name in different object files. The .block directive
8000 reserves an uninitialized block of storage. However, it's not common
8001 storage. Fortunately, GCC never requests common storage with the same
8002 name in any given translation unit. */
8005 pa_asm_output_aligned_local (FILE *stream,
8007 unsigned HOST_WIDE_INT size,
8011 fprintf (stream, "\t.align %u\n", align / BITS_PER_UNIT);
8014 fprintf (stream, "%s", LOCAL_ASM_OP);
8015 assemble_name (stream, name);
8016 fprintf (stream, "\n");
8019 ASM_OUTPUT_LABEL (stream, name);
8020 fprintf (stream, "\t.block "HOST_WIDE_INT_PRINT_UNSIGNED"\n", size);
8023 /* Returns 1 if the 6 operands specified in OPERANDS are suitable for
8024 use in fmpysub instructions. */
8026 fmpysuboperands (rtx *operands)
8028 enum machine_mode mode = GET_MODE (operands[0]);
8030 /* Must be a floating point mode. */
8031 if (mode != SFmode && mode != DFmode)
8034 /* All modes must be the same. */
8035 if (! (mode == GET_MODE (operands[1])
8036 && mode == GET_MODE (operands[2])
8037 && mode == GET_MODE (operands[3])
8038 && mode == GET_MODE (operands[4])
8039 && mode == GET_MODE (operands[5])))
8042 /* All operands must be registers. */
8043 if (! (GET_CODE (operands[1]) == REG
8044 && GET_CODE (operands[2]) == REG
8045 && GET_CODE (operands[3]) == REG
8046 && GET_CODE (operands[4]) == REG
8047 && GET_CODE (operands[5]) == REG))
8050 /* Only 2 real operands to the subtraction. Subtraction is not a commutative
8051 operation, so operands[4] must be the same as operand[3]. */
8052 if (! rtx_equal_p (operands[3], operands[4]))
8055 /* multiply cannot feed into subtraction. */
8056 if (rtx_equal_p (operands[5], operands[0]))
8059 /* Inout operand of sub cannot conflict with any operands from multiply. */
8060 if (rtx_equal_p (operands[3], operands[0])
8061 || rtx_equal_p (operands[3], operands[1])
8062 || rtx_equal_p (operands[3], operands[2]))
8065 /* SFmode limits the registers to the upper 32 of the 32bit FP regs. */
8067 && (REGNO_REG_CLASS (REGNO (operands[0])) != FPUPPER_REGS
8068 || REGNO_REG_CLASS (REGNO (operands[1])) != FPUPPER_REGS
8069 || REGNO_REG_CLASS (REGNO (operands[2])) != FPUPPER_REGS
8070 || REGNO_REG_CLASS (REGNO (operands[3])) != FPUPPER_REGS
8071 || REGNO_REG_CLASS (REGNO (operands[4])) != FPUPPER_REGS
8072 || REGNO_REG_CLASS (REGNO (operands[5])) != FPUPPER_REGS))
8075 /* Passed. Operands are suitable for fmpysub. */
8079 /* Return 1 if the given constant is 2, 4, or 8. These are the valid
8080 constants for shadd instructions. */
8082 shadd_constant_p (int val)
8084 if (val == 2 || val == 4 || val == 8)
8090 /* Return 1 if OP is valid as a base or index register in a
8094 borx_reg_operand (rtx op, enum machine_mode mode)
8096 if (GET_CODE (op) != REG)
8099 /* We must reject virtual registers as the only expressions that
8100 can be instantiated are REG and REG+CONST. */
8101 if (op == virtual_incoming_args_rtx
8102 || op == virtual_stack_vars_rtx
8103 || op == virtual_stack_dynamic_rtx
8104 || op == virtual_outgoing_args_rtx
8105 || op == virtual_cfa_rtx)
8108 /* While it's always safe to index off the frame pointer, it's not
8109 profitable to do so when the frame pointer is being eliminated. */
8110 if (!reload_completed
8111 && flag_omit_frame_pointer
8112 && !current_function_calls_alloca
8113 && op == frame_pointer_rtx)
8116 return register_operand (op, mode);
8119 /* Return 1 if this operand is anything other than a hard register. */
8122 non_hard_reg_operand (rtx op, enum machine_mode mode ATTRIBUTE_UNUSED)
8124 return ! (GET_CODE (op) == REG && REGNO (op) < FIRST_PSEUDO_REGISTER);
8127 /* Return 1 if INSN branches forward. Should be using insn_addresses
8128 to avoid walking through all the insns... */
8130 forward_branch_p (rtx insn)
8132 rtx label = JUMP_LABEL (insn);
8139 insn = NEXT_INSN (insn);
8142 return (insn == label);
8145 /* Return 1 if OP is an equality comparison, else return 0. */
8147 eq_neq_comparison_operator (rtx op, enum machine_mode mode ATTRIBUTE_UNUSED)
8149 return (GET_CODE (op) == EQ || GET_CODE (op) == NE);
8152 /* Return 1 if INSN is in the delay slot of a call instruction. */
8154 jump_in_call_delay (rtx insn)
8157 if (GET_CODE (insn) != JUMP_INSN)
8160 if (PREV_INSN (insn)
8161 && PREV_INSN (PREV_INSN (insn))
8162 && GET_CODE (next_real_insn (PREV_INSN (PREV_INSN (insn)))) == INSN)
8164 rtx test_insn = next_real_insn (PREV_INSN (PREV_INSN (insn)));
8166 return (GET_CODE (PATTERN (test_insn)) == SEQUENCE
8167 && XVECEXP (PATTERN (test_insn), 0, 1) == insn);
8174 /* Output an unconditional move and branch insn. */
8177 output_parallel_movb (rtx *operands, int length)
8179 /* These are the cases in which we win. */
8181 return "mov%I1b,tr %1,%0,%2";
8183 /* None of these cases wins, but they don't lose either. */
8184 if (dbr_sequence_length () == 0)
8186 /* Nothing in the delay slot, fake it by putting the combined
8187 insn (the copy or add) in the delay slot of a bl. */
8188 if (GET_CODE (operands[1]) == CONST_INT)
8189 return "b %2\n\tldi %1,%0";
8191 return "b %2\n\tcopy %1,%0";
8195 /* Something in the delay slot, but we've got a long branch. */
8196 if (GET_CODE (operands[1]) == CONST_INT)
8197 return "ldi %1,%0\n\tb %2";
8199 return "copy %1,%0\n\tb %2";
8203 /* Output an unconditional add and branch insn. */
8206 output_parallel_addb (rtx *operands, int length)
8208 /* To make life easy we want operand0 to be the shared input/output
8209 operand and operand1 to be the readonly operand. */
8210 if (operands[0] == operands[1])
8211 operands[1] = operands[2];
8213 /* These are the cases in which we win. */
8215 return "add%I1b,tr %1,%0,%3";
8217 /* None of these cases win, but they don't lose either. */
8218 if (dbr_sequence_length () == 0)
8220 /* Nothing in the delay slot, fake it by putting the combined
8221 insn (the copy or add) in the delay slot of a bl. */
8222 return "b %3\n\tadd%I1 %1,%0,%0";
8226 /* Something in the delay slot, but we've got a long branch. */
8227 return "add%I1 %1,%0,%0\n\tb %3";
8231 /* Return nonzero if INSN (a jump insn) immediately follows a call
8232 to a named function. This is used to avoid filling the delay slot
8233 of the jump since it can usually be eliminated by modifying RP in
8234 the delay slot of the call. */
8237 following_call (rtx insn)
8239 if (! TARGET_JUMP_IN_DELAY)
8242 /* Find the previous real insn, skipping NOTEs. */
8243 insn = PREV_INSN (insn);
8244 while (insn && GET_CODE (insn) == NOTE)
8245 insn = PREV_INSN (insn);
8247 /* Check for CALL_INSNs and millicode calls. */
8249 && ((GET_CODE (insn) == CALL_INSN
8250 && get_attr_type (insn) != TYPE_DYNCALL)
8251 || (GET_CODE (insn) == INSN
8252 && GET_CODE (PATTERN (insn)) != SEQUENCE
8253 && GET_CODE (PATTERN (insn)) != USE
8254 && GET_CODE (PATTERN (insn)) != CLOBBER
8255 && get_attr_type (insn) == TYPE_MILLI)))
8261 /* We use this hook to perform a PA specific optimization which is difficult
8262 to do in earlier passes.
8264 We want the delay slots of branches within jump tables to be filled.
8265 None of the compiler passes at the moment even has the notion that a
8266 PA jump table doesn't contain addresses, but instead contains actual
8269 Because we actually jump into the table, the addresses of each entry
8270 must stay constant in relation to the beginning of the table (which
8271 itself must stay constant relative to the instruction to jump into
8272 it). I don't believe we can guarantee earlier passes of the compiler
8273 will adhere to those rules.
8275 So, late in the compilation process we find all the jump tables, and
8276 expand them into real code -- e.g. each entry in the jump table vector
8277 will get an appropriate label followed by a jump to the final target.
8279 Reorg and the final jump pass can then optimize these branches and
8280 fill their delay slots. We end up with smaller, more efficient code.
8282 The jump instructions within the table are special; we must be able
8283 to identify them during assembly output (if the jumps don't get filled
8284 we need to emit a nop rather than nullifying the delay slot)). We
8285 identify jumps in switch tables by using insns with the attribute
8286 type TYPE_BTABLE_BRANCH.
8288 We also surround the jump table itself with BEGIN_BRTAB and END_BRTAB
8289 insns. This serves two purposes, first it prevents jump.c from
8290 noticing that the last N entries in the table jump to the instruction
8291 immediately after the table and deleting the jumps. Second, those
8292 insns mark where we should emit .begin_brtab and .end_brtab directives
8293 when using GAS (allows for better link time optimizations). */
8300 remove_useless_addtr_insns (1);
8302 if (pa_cpu < PROCESSOR_8000)
8303 pa_combine_instructions ();
8306 /* This is fairly cheap, so always run it if optimizing. */
8307 if (optimize > 0 && !TARGET_BIG_SWITCH)
8309 /* Find and explode all ADDR_VEC or ADDR_DIFF_VEC insns. */
8310 for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
8312 rtx pattern, tmp, location, label;
8313 unsigned int length, i;
8315 /* Find an ADDR_VEC or ADDR_DIFF_VEC insn to explode. */
8316 if (GET_CODE (insn) != JUMP_INSN
8317 || (GET_CODE (PATTERN (insn)) != ADDR_VEC
8318 && GET_CODE (PATTERN (insn)) != ADDR_DIFF_VEC))
8321 /* Emit marker for the beginning of the branch table. */
8322 emit_insn_before (gen_begin_brtab (), insn);
8324 pattern = PATTERN (insn);
8325 location = PREV_INSN (insn);
8326 length = XVECLEN (pattern, GET_CODE (pattern) == ADDR_DIFF_VEC);
8328 for (i = 0; i < length; i++)
8330 /* Emit a label before each jump to keep jump.c from
8331 removing this code. */
8332 tmp = gen_label_rtx ();
8333 LABEL_NUSES (tmp) = 1;
8334 emit_label_after (tmp, location);
8335 location = NEXT_INSN (location);
8337 if (GET_CODE (pattern) == ADDR_VEC)
8338 label = XEXP (XVECEXP (pattern, 0, i), 0);
8340 label = XEXP (XVECEXP (pattern, 1, i), 0);
8342 tmp = gen_short_jump (label);
8344 /* Emit the jump itself. */
8345 tmp = emit_jump_insn_after (tmp, location);
8346 JUMP_LABEL (tmp) = label;
8347 LABEL_NUSES (label)++;
8348 location = NEXT_INSN (location);
8350 /* Emit a BARRIER after the jump. */
8351 emit_barrier_after (location);
8352 location = NEXT_INSN (location);
8355 /* Emit marker for the end of the branch table. */
8356 emit_insn_before (gen_end_brtab (), location);
8357 location = NEXT_INSN (location);
8358 emit_barrier_after (location);
8360 /* Delete the ADDR_VEC or ADDR_DIFF_VEC. */
8366 /* Still need brtab marker insns. FIXME: the presence of these
8367 markers disables output of the branch table to readonly memory,
8368 and any alignment directives that might be needed. Possibly,
8369 the begin_brtab insn should be output before the label for the
8370 table. This doesn't matter at the moment since the tables are
8371 always output in the text section. */
8372 for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
8374 /* Find an ADDR_VEC insn. */
8375 if (GET_CODE (insn) != JUMP_INSN
8376 || (GET_CODE (PATTERN (insn)) != ADDR_VEC
8377 && GET_CODE (PATTERN (insn)) != ADDR_DIFF_VEC))
8380 /* Now generate markers for the beginning and end of the
8382 emit_insn_before (gen_begin_brtab (), insn);
8383 emit_insn_after (gen_end_brtab (), insn);
8388 /* The PA has a number of odd instructions which can perform multiple
8389 tasks at once. On first generation PA machines (PA1.0 and PA1.1)
8390 it may be profitable to combine two instructions into one instruction
8391 with two outputs. It's not profitable PA2.0 machines because the
8392 two outputs would take two slots in the reorder buffers.
8394 This routine finds instructions which can be combined and combines
8395 them. We only support some of the potential combinations, and we
8396 only try common ways to find suitable instructions.
8398 * addb can add two registers or a register and a small integer
8399 and jump to a nearby (+-8k) location. Normally the jump to the
8400 nearby location is conditional on the result of the add, but by
8401 using the "true" condition we can make the jump unconditional.
8402 Thus addb can perform two independent operations in one insn.
8404 * movb is similar to addb in that it can perform a reg->reg
8405 or small immediate->reg copy and jump to a nearby (+-8k location).
8407 * fmpyadd and fmpysub can perform a FP multiply and either an
8408 FP add or FP sub if the operands of the multiply and add/sub are
8409 independent (there are other minor restrictions). Note both
8410 the fmpy and fadd/fsub can in theory move to better spots according
8411 to data dependencies, but for now we require the fmpy stay at a
8414 * Many of the memory operations can perform pre & post updates
8415 of index registers. GCC's pre/post increment/decrement addressing
8416 is far too simple to take advantage of all the possibilities. This
8417 pass may not be suitable since those insns may not be independent.
8419 * comclr can compare two ints or an int and a register, nullify
8420 the following instruction and zero some other register. This
8421 is more difficult to use as it's harder to find an insn which
8422 will generate a comclr than finding something like an unconditional
8423 branch. (conditional moves & long branches create comclr insns).
8425 * Most arithmetic operations can conditionally skip the next
8426 instruction. They can be viewed as "perform this operation
8427 and conditionally jump to this nearby location" (where nearby
8428 is an insns away). These are difficult to use due to the
8429 branch length restrictions. */
8432 pa_combine_instructions (void)
8436 /* This can get expensive since the basic algorithm is on the
8437 order of O(n^2) (or worse). Only do it for -O2 or higher
8438 levels of optimization. */
8442 /* Walk down the list of insns looking for "anchor" insns which
8443 may be combined with "floating" insns. As the name implies,
8444 "anchor" instructions don't move, while "floating" insns may
8446 new = gen_rtx_PARALLEL (VOIDmode, gen_rtvec (2, NULL_RTX, NULL_RTX));
8447 new = make_insn_raw (new);
8449 for (anchor = get_insns (); anchor; anchor = NEXT_INSN (anchor))
8451 enum attr_pa_combine_type anchor_attr;
8452 enum attr_pa_combine_type floater_attr;
8454 /* We only care about INSNs, JUMP_INSNs, and CALL_INSNs.
8455 Also ignore any special USE insns. */
8456 if ((GET_CODE (anchor) != INSN
8457 && GET_CODE (anchor) != JUMP_INSN
8458 && GET_CODE (anchor) != CALL_INSN)
8459 || GET_CODE (PATTERN (anchor)) == USE
8460 || GET_CODE (PATTERN (anchor)) == CLOBBER
8461 || GET_CODE (PATTERN (anchor)) == ADDR_VEC
8462 || GET_CODE (PATTERN (anchor)) == ADDR_DIFF_VEC)
8465 anchor_attr = get_attr_pa_combine_type (anchor);
8466 /* See if anchor is an insn suitable for combination. */
8467 if (anchor_attr == PA_COMBINE_TYPE_FMPY
8468 || anchor_attr == PA_COMBINE_TYPE_FADDSUB
8469 || (anchor_attr == PA_COMBINE_TYPE_UNCOND_BRANCH
8470 && ! forward_branch_p (anchor)))
8474 for (floater = PREV_INSN (anchor);
8476 floater = PREV_INSN (floater))
8478 if (GET_CODE (floater) == NOTE
8479 || (GET_CODE (floater) == INSN
8480 && (GET_CODE (PATTERN (floater)) == USE
8481 || GET_CODE (PATTERN (floater)) == CLOBBER)))
8484 /* Anything except a regular INSN will stop our search. */
8485 if (GET_CODE (floater) != INSN
8486 || GET_CODE (PATTERN (floater)) == ADDR_VEC
8487 || GET_CODE (PATTERN (floater)) == ADDR_DIFF_VEC)
8493 /* See if FLOATER is suitable for combination with the
8495 floater_attr = get_attr_pa_combine_type (floater);
8496 if ((anchor_attr == PA_COMBINE_TYPE_FMPY
8497 && floater_attr == PA_COMBINE_TYPE_FADDSUB)
8498 || (anchor_attr == PA_COMBINE_TYPE_FADDSUB
8499 && floater_attr == PA_COMBINE_TYPE_FMPY))
8501 /* If ANCHOR and FLOATER can be combined, then we're
8502 done with this pass. */
8503 if (pa_can_combine_p (new, anchor, floater, 0,
8504 SET_DEST (PATTERN (floater)),
8505 XEXP (SET_SRC (PATTERN (floater)), 0),
8506 XEXP (SET_SRC (PATTERN (floater)), 1)))
8510 else if (anchor_attr == PA_COMBINE_TYPE_UNCOND_BRANCH
8511 && floater_attr == PA_COMBINE_TYPE_ADDMOVE)
8513 if (GET_CODE (SET_SRC (PATTERN (floater))) == PLUS)
8515 if (pa_can_combine_p (new, anchor, floater, 0,
8516 SET_DEST (PATTERN (floater)),
8517 XEXP (SET_SRC (PATTERN (floater)), 0),
8518 XEXP (SET_SRC (PATTERN (floater)), 1)))
8523 if (pa_can_combine_p (new, anchor, floater, 0,
8524 SET_DEST (PATTERN (floater)),
8525 SET_SRC (PATTERN (floater)),
8526 SET_SRC (PATTERN (floater))))
8532 /* If we didn't find anything on the backwards scan try forwards. */
8534 && (anchor_attr == PA_COMBINE_TYPE_FMPY
8535 || anchor_attr == PA_COMBINE_TYPE_FADDSUB))
8537 for (floater = anchor; floater; floater = NEXT_INSN (floater))
8539 if (GET_CODE (floater) == NOTE
8540 || (GET_CODE (floater) == INSN
8541 && (GET_CODE (PATTERN (floater)) == USE
8542 || GET_CODE (PATTERN (floater)) == CLOBBER)))
8546 /* Anything except a regular INSN will stop our search. */
8547 if (GET_CODE (floater) != INSN
8548 || GET_CODE (PATTERN (floater)) == ADDR_VEC
8549 || GET_CODE (PATTERN (floater)) == ADDR_DIFF_VEC)
8555 /* See if FLOATER is suitable for combination with the
8557 floater_attr = get_attr_pa_combine_type (floater);
8558 if ((anchor_attr == PA_COMBINE_TYPE_FMPY
8559 && floater_attr == PA_COMBINE_TYPE_FADDSUB)
8560 || (anchor_attr == PA_COMBINE_TYPE_FADDSUB
8561 && floater_attr == PA_COMBINE_TYPE_FMPY))
8563 /* If ANCHOR and FLOATER can be combined, then we're
8564 done with this pass. */
8565 if (pa_can_combine_p (new, anchor, floater, 1,
8566 SET_DEST (PATTERN (floater)),
8567 XEXP (SET_SRC (PATTERN (floater)),
8569 XEXP (SET_SRC (PATTERN (floater)),
8576 /* FLOATER will be nonzero if we found a suitable floating
8577 insn for combination with ANCHOR. */
8579 && (anchor_attr == PA_COMBINE_TYPE_FADDSUB
8580 || anchor_attr == PA_COMBINE_TYPE_FMPY))
8582 /* Emit the new instruction and delete the old anchor. */
8583 emit_insn_before (gen_rtx_PARALLEL
8585 gen_rtvec (2, PATTERN (anchor),
8586 PATTERN (floater))),
8589 PUT_CODE (anchor, NOTE);
8590 NOTE_LINE_NUMBER (anchor) = NOTE_INSN_DELETED;
8591 NOTE_SOURCE_FILE (anchor) = 0;
8593 /* Emit a special USE insn for FLOATER, then delete
8594 the floating insn. */
8595 emit_insn_before (gen_rtx_USE (VOIDmode, floater), floater);
8596 delete_insn (floater);
8601 && anchor_attr == PA_COMBINE_TYPE_UNCOND_BRANCH)
8604 /* Emit the new_jump instruction and delete the old anchor. */
8606 = emit_jump_insn_before (gen_rtx_PARALLEL
8608 gen_rtvec (2, PATTERN (anchor),
8609 PATTERN (floater))),
8612 JUMP_LABEL (temp) = JUMP_LABEL (anchor);
8613 PUT_CODE (anchor, NOTE);
8614 NOTE_LINE_NUMBER (anchor) = NOTE_INSN_DELETED;
8615 NOTE_SOURCE_FILE (anchor) = 0;
8617 /* Emit a special USE insn for FLOATER, then delete
8618 the floating insn. */
8619 emit_insn_before (gen_rtx_USE (VOIDmode, floater), floater);
8620 delete_insn (floater);
8628 pa_can_combine_p (rtx new, rtx anchor, rtx floater, int reversed, rtx dest,
8631 int insn_code_number;
8634 /* Create a PARALLEL with the patterns of ANCHOR and
8635 FLOATER, try to recognize it, then test constraints
8636 for the resulting pattern.
8638 If the pattern doesn't match or the constraints
8639 aren't met keep searching for a suitable floater
8641 XVECEXP (PATTERN (new), 0, 0) = PATTERN (anchor);
8642 XVECEXP (PATTERN (new), 0, 1) = PATTERN (floater);
8643 INSN_CODE (new) = -1;
8644 insn_code_number = recog_memoized (new);
8645 if (insn_code_number < 0
8646 || (extract_insn (new), ! constrain_operands (1)))
8660 /* There's up to three operands to consider. One
8661 output and two inputs.
8663 The output must not be used between FLOATER & ANCHOR
8664 exclusive. The inputs must not be set between
8665 FLOATER and ANCHOR exclusive. */
8667 if (reg_used_between_p (dest, start, end))
8670 if (reg_set_between_p (src1, start, end))
8673 if (reg_set_between_p (src2, start, end))
8676 /* If we get here, then everything is good. */
8680 /* Return nonzero if references for INSN are delayed.
8682 Millicode insns are actually function calls with some special
8683 constraints on arguments and register usage.
8685 Millicode calls always expect their arguments in the integer argument
8686 registers, and always return their result in %r29 (ret1). They
8687 are expected to clobber their arguments, %r1, %r29, and the return
8688 pointer which is %r31 on 32-bit and %r2 on 64-bit, and nothing else.
8690 This function tells reorg that the references to arguments and
8691 millicode calls do not appear to happen until after the millicode call.
8692 This allows reorg to put insns which set the argument registers into the
8693 delay slot of the millicode call -- thus they act more like traditional
8696 Note we cannot consider side effects of the insn to be delayed because
8697 the branch and link insn will clobber the return pointer. If we happened
8698 to use the return pointer in the delay slot of the call, then we lose.
8700 get_attr_type will try to recognize the given insn, so make sure to
8701 filter out things it will not accept -- SEQUENCE, USE and CLOBBER insns
8704 insn_refs_are_delayed (rtx insn)
8706 return ((GET_CODE (insn) == INSN
8707 && GET_CODE (PATTERN (insn)) != SEQUENCE
8708 && GET_CODE (PATTERN (insn)) != USE
8709 && GET_CODE (PATTERN (insn)) != CLOBBER
8710 && get_attr_type (insn) == TYPE_MILLI));
8713 /* On the HP-PA the value is found in register(s) 28(-29), unless
8714 the mode is SF or DF. Then the value is returned in fr4 (32).
8716 This must perform the same promotions as PROMOTE_MODE, else
8717 TARGET_PROMOTE_FUNCTION_RETURN will not work correctly.
8719 Small structures must be returned in a PARALLEL on PA64 in order
8720 to match the HP Compiler ABI. */
8723 function_value (tree valtype, tree func ATTRIBUTE_UNUSED)
8725 enum machine_mode valmode;
8727 if (AGGREGATE_TYPE_P (valtype))
8731 /* Aggregates with a size less than or equal to 128 bits are
8732 returned in GR 28(-29). They are left justified. The pad
8733 bits are undefined. Larger aggregates are returned in
8737 int ub = int_size_in_bytes (valtype) <= UNITS_PER_WORD ? 1 : 2;
8739 for (i = 0; i < ub; i++)
8741 loc[i] = gen_rtx_EXPR_LIST (VOIDmode,
8742 gen_rtx_REG (DImode, 28 + i),
8747 return gen_rtx_PARALLEL (BLKmode, gen_rtvec_v (ub, loc));
8749 else if (int_size_in_bytes (valtype) > UNITS_PER_WORD)
8751 /* Aggregates 5 to 8 bytes in size are returned in general
8752 registers r28-r29 in the same manner as other non
8753 floating-point objects. The data is right-justified and
8754 zero-extended to 64 bits. This is opposite to the normal
8755 justification used on big endian targets and requires
8756 special treatment. */
8757 rtx loc = gen_rtx_EXPR_LIST (VOIDmode,
8758 gen_rtx_REG (DImode, 28), const0_rtx);
8759 return gen_rtx_PARALLEL (BLKmode, gen_rtvec (1, loc));
8763 if ((INTEGRAL_TYPE_P (valtype)
8764 && TYPE_PRECISION (valtype) < BITS_PER_WORD)
8765 || POINTER_TYPE_P (valtype))
8766 valmode = word_mode;
8768 valmode = TYPE_MODE (valtype);
8770 if (TREE_CODE (valtype) == REAL_TYPE
8771 && !AGGREGATE_TYPE_P (valtype)
8772 && TYPE_MODE (valtype) != TFmode
8773 && !TARGET_SOFT_FLOAT)
8774 return gen_rtx_REG (valmode, 32);
8776 return gen_rtx_REG (valmode, 28);
8779 /* Return the location of a parameter that is passed in a register or NULL
8780 if the parameter has any component that is passed in memory.
8782 This is new code and will be pushed to into the net sources after
8785 ??? We might want to restructure this so that it looks more like other
8788 function_arg (CUMULATIVE_ARGS *cum, enum machine_mode mode, tree type,
8789 int named ATTRIBUTE_UNUSED)
8791 int max_arg_words = (TARGET_64BIT ? 8 : 4);
8798 if (mode == VOIDmode)
8801 arg_size = FUNCTION_ARG_SIZE (mode, type);
8803 /* If this arg would be passed partially or totally on the stack, then
8804 this routine should return zero. pa_arg_partial_bytes will
8805 handle arguments which are split between regs and stack slots if
8806 the ABI mandates split arguments. */
8809 /* The 32-bit ABI does not split arguments. */
8810 if (cum->words + arg_size > max_arg_words)
8816 alignment = cum->words & 1;
8817 if (cum->words + alignment >= max_arg_words)
8821 /* The 32bit ABIs and the 64bit ABIs are rather different,
8822 particularly in their handling of FP registers. We might
8823 be able to cleverly share code between them, but I'm not
8824 going to bother in the hope that splitting them up results
8825 in code that is more easily understood. */
8829 /* Advance the base registers to their current locations.
8831 Remember, gprs grow towards smaller register numbers while
8832 fprs grow to higher register numbers. Also remember that
8833 although FP regs are 32-bit addressable, we pretend that
8834 the registers are 64-bits wide. */
8835 gpr_reg_base = 26 - cum->words;
8836 fpr_reg_base = 32 + cum->words;
8838 /* Arguments wider than one word and small aggregates need special
8842 || (type && AGGREGATE_TYPE_P (type)))
8844 /* Double-extended precision (80-bit), quad-precision (128-bit)
8845 and aggregates including complex numbers are aligned on
8846 128-bit boundaries. The first eight 64-bit argument slots
8847 are associated one-to-one, with general registers r26
8848 through r19, and also with floating-point registers fr4
8849 through fr11. Arguments larger than one word are always
8850 passed in general registers.
8852 Using a PARALLEL with a word mode register results in left
8853 justified data on a big-endian target. */
8856 int i, offset = 0, ub = arg_size;
8858 /* Align the base register. */
8859 gpr_reg_base -= alignment;
8861 ub = MIN (ub, max_arg_words - cum->words - alignment);
8862 for (i = 0; i < ub; i++)
8864 loc[i] = gen_rtx_EXPR_LIST (VOIDmode,
8865 gen_rtx_REG (DImode, gpr_reg_base),
8871 return gen_rtx_PARALLEL (mode, gen_rtvec_v (ub, loc));
8876 /* If the argument is larger than a word, then we know precisely
8877 which registers we must use. */
8891 /* Structures 5 to 8 bytes in size are passed in the general
8892 registers in the same manner as other non floating-point
8893 objects. The data is right-justified and zero-extended
8894 to 64 bits. This is opposite to the normal justification
8895 used on big endian targets and requires special treatment.
8896 We now define BLOCK_REG_PADDING to pad these objects. */
8897 if (mode == BLKmode || (type && AGGREGATE_TYPE_P (type)))
8899 rtx loc = gen_rtx_EXPR_LIST (VOIDmode,
8900 gen_rtx_REG (DImode, gpr_reg_base),
8902 return gen_rtx_PARALLEL (BLKmode, gen_rtvec (1, loc));
8907 /* We have a single word (32 bits). A simple computation
8908 will get us the register #s we need. */
8909 gpr_reg_base = 26 - cum->words;
8910 fpr_reg_base = 32 + 2 * cum->words;
8914 /* Determine if the argument needs to be passed in both general and
8915 floating point registers. */
8916 if (((TARGET_PORTABLE_RUNTIME || TARGET_64BIT || TARGET_ELF32)
8917 /* If we are doing soft-float with portable runtime, then there
8918 is no need to worry about FP regs. */
8919 && !TARGET_SOFT_FLOAT
8920 /* The parameter must be some kind of float, else we can just
8921 pass it in integer registers. */
8922 && FLOAT_MODE_P (mode)
8923 /* The target function must not have a prototype. */
8924 && cum->nargs_prototype <= 0
8925 /* libcalls do not need to pass items in both FP and general
8927 && type != NULL_TREE
8928 /* All this hair applies to "outgoing" args only. This includes
8929 sibcall arguments setup with FUNCTION_INCOMING_ARG. */
8931 /* Also pass outgoing floating arguments in both registers in indirect
8932 calls with the 32 bit ABI and the HP assembler since there is no
8933 way to the specify argument locations in static functions. */
8938 && FLOAT_MODE_P (mode)))
8944 gen_rtx_EXPR_LIST (VOIDmode,
8945 gen_rtx_REG (mode, fpr_reg_base),
8947 gen_rtx_EXPR_LIST (VOIDmode,
8948 gen_rtx_REG (mode, gpr_reg_base),
8953 /* See if we should pass this parameter in a general register. */
8954 if (TARGET_SOFT_FLOAT
8955 /* Indirect calls in the normal 32bit ABI require all arguments
8956 to be passed in general registers. */
8957 || (!TARGET_PORTABLE_RUNTIME
8961 /* If the parameter is not a floating point parameter, then
8962 it belongs in GPRs. */
8963 || !FLOAT_MODE_P (mode)
8964 /* Structure with single SFmode field belongs in GPR. */
8965 || (type && AGGREGATE_TYPE_P (type)))
8966 retval = gen_rtx_REG (mode, gpr_reg_base);
8968 retval = gen_rtx_REG (mode, fpr_reg_base);
8974 /* If this arg would be passed totally in registers or totally on the stack,
8975 then this routine should return zero. */
8978 pa_arg_partial_bytes (CUMULATIVE_ARGS *cum, enum machine_mode mode,
8979 tree type, bool named ATTRIBUTE_UNUSED)
8981 unsigned int max_arg_words = 8;
8982 unsigned int offset = 0;
8987 if (FUNCTION_ARG_SIZE (mode, type) > 1 && (cum->words & 1))
8990 if (cum->words + offset + FUNCTION_ARG_SIZE (mode, type) <= max_arg_words)
8991 /* Arg fits fully into registers. */
8993 else if (cum->words + offset >= max_arg_words)
8994 /* Arg fully on the stack. */
8998 return (max_arg_words - cum->words - offset) * UNITS_PER_WORD;
9002 /* Return a string to output before text in the current function.
9004 This function is only used with SOM. Because we don't support
9005 named subspaces, we can only create a new subspace or switch back
9006 to the default text subspace. */
9008 som_text_section_asm_op (void)
9015 if (cfun && !cfun->machine->in_nsubspa)
9017 /* We only want to emit a .nsubspa directive once at the
9018 start of the function. */
9019 cfun->machine->in_nsubspa = 1;
9021 /* Create a new subspace for the text. This provides
9022 better stub placement and one-only functions. */
9024 && DECL_ONE_ONLY (cfun->decl)
9025 && !DECL_WEAK (cfun->decl))
9027 "\t.SPACE $TEXT$\n\t.NSUBSPA $CODE$,QUAD=0,ALIGN=8,ACCESS=44,SORT=24,COMDAT";
9029 return "\t.SPACE $TEXT$\n\t.NSUBSPA $CODE$";
9033 /* There isn't a current function or the body of the current
9034 function has been completed. So, we are changing to the
9035 text section to output debugging information. Do this in
9036 the default text section. We need to forget that we are
9037 in the text section so that the function text_section in
9038 varasm.c will call us the next time around. */
9043 return "\t.SPACE $TEXT$\n\t.SUBSPA $CODE$";
9046 /* On hpux10, the linker will give an error if we have a reference
9047 in the read-only data section to a symbol defined in a shared
9048 library. Therefore, expressions that might require a reloc can
9049 not be placed in the read-only data section. */
9052 pa_select_section (tree exp, int reloc,
9053 unsigned HOST_WIDE_INT align ATTRIBUTE_UNUSED)
9055 if (TREE_CODE (exp) == VAR_DECL
9056 && TREE_READONLY (exp)
9057 && !TREE_THIS_VOLATILE (exp)
9058 && DECL_INITIAL (exp)
9059 && (DECL_INITIAL (exp) == error_mark_node
9060 || TREE_CONSTANT (DECL_INITIAL (exp)))
9064 && DECL_ONE_ONLY (exp)
9065 && !DECL_WEAK (exp))
9066 som_one_only_readonly_data_section ();
9068 readonly_data_section ();
9070 else if (CONSTANT_CLASS_P (exp) && !reloc)
9071 readonly_data_section ();
9073 && TREE_CODE (exp) == VAR_DECL
9074 && DECL_ONE_ONLY (exp)
9075 && !DECL_WEAK (exp))
9076 som_one_only_data_section ();
9082 pa_globalize_label (FILE *stream, const char *name)
9084 /* We only handle DATA objects here, functions are globalized in
9085 ASM_DECLARE_FUNCTION_NAME. */
9086 if (! FUNCTION_NAME_P (name))
9088 fputs ("\t.EXPORT ", stream);
9089 assemble_name (stream, name);
9090 fputs (",DATA\n", stream);
9094 /* Worker function for TARGET_STRUCT_VALUE_RTX. */
9097 pa_struct_value_rtx (tree fntype ATTRIBUTE_UNUSED,
9098 int incoming ATTRIBUTE_UNUSED)
9100 return gen_rtx_REG (Pmode, PA_STRUCT_VALUE_REGNUM);
9103 /* Worker function for TARGET_RETURN_IN_MEMORY. */
9106 pa_return_in_memory (tree type, tree fntype ATTRIBUTE_UNUSED)
9108 /* SOM ABI says that objects larger than 64 bits are returned in memory.
9109 PA64 ABI says that objects larger than 128 bits are returned in memory.
9110 Note, int_size_in_bytes can return -1 if the size of the object is
9111 variable or larger than the maximum value that can be expressed as
9112 a HOST_WIDE_INT. It can also return zero for an empty type. The
9113 simplest way to handle variable and empty types is to pass them in
9114 memory. This avoids problems in defining the boundaries of argument
9115 slots, allocating registers, etc. */
9116 return (int_size_in_bytes (type) > (TARGET_64BIT ? 16 : 8)
9117 || int_size_in_bytes (type) <= 0);
9120 /* Structure to hold declaration and name of external symbols that are
9121 emitted by GCC. We generate a vector of these symbols and output them
9122 at the end of the file if and only if SYMBOL_REF_REFERENCED_P is true.
9123 This avoids putting out names that are never really used. */
9125 typedef struct extern_symbol GTY(())
9131 /* Define gc'd vector type for extern_symbol. */
9132 DEF_VEC_O(extern_symbol);
9133 DEF_VEC_ALLOC_O(extern_symbol,gc);
9135 /* Vector of extern_symbol pointers. */
9136 static GTY(()) VEC(extern_symbol,gc) *extern_symbols;
9138 #ifdef ASM_OUTPUT_EXTERNAL_REAL
9139 /* Mark DECL (name NAME) as an external reference (assembler output
9140 file FILE). This saves the names to output at the end of the file
9141 if actually referenced. */
9144 pa_hpux_asm_output_external (FILE *file, tree decl, const char *name)
9146 extern_symbol * p = VEC_safe_push (extern_symbol, gc, extern_symbols, NULL);
9148 gcc_assert (file == asm_out_file);
9153 /* Output text required at the end of an assembler file.
9154 This includes deferred plabels and .import directives for
9155 all external symbols that were actually referenced. */
9158 pa_hpux_file_end (void)
9163 output_deferred_plabels ();
9165 for (i = 0; VEC_iterate (extern_symbol, extern_symbols, i, p); i++)
9167 tree decl = p->decl;
9169 if (!TREE_ASM_WRITTEN (decl)
9170 && SYMBOL_REF_REFERENCED_P (XEXP (DECL_RTL (decl), 0)))
9171 ASM_OUTPUT_EXTERNAL_REAL (asm_out_file, decl, p->name);
9174 VEC_free (extern_symbol, gc, extern_symbols);