Copyright (C) 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
1999, 2000 Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+along with GCC; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
/* The default branch cost is 1. */
#ifndef BRANCH_COST
#define STACK_CHECK_MAX_VAR_SIZE (STACK_CHECK_MAX_FRAME_SIZE / 100)
#endif
\f
-/* Optabs are tables saying how to generate insn bodies
- for various machine modes and numbers of operands.
- Each optab applies to one operation.
- For example, add_optab applies to addition.
+/* Functions from optabs.c, commonly used, and without need for the optabs
+ tables: */
- The insn_code slot is the enum insn_code that says how to
- generate an insn for this operation on a particular machine mode.
- It is CODE_FOR_nothing if there is no such insn on the target machine.
-
- The `lib_call' slot is the name of the library function that
- can be used to perform the operation.
-
- A few optabs, such as move_optab and cmp_optab, are used
- by special code. */
-
-typedef struct optab
-{
- enum rtx_code code;
- struct {
- enum insn_code insn_code;
- rtx libfunc;
- } handlers [NUM_MACHINE_MODES];
-} * optab;
-
-/* Given an enum insn_code, access the function to construct
- the body of that kind of insn. */
-#define GEN_FCN(CODE) (*insn_data[(int) (CODE)].genfun)
-
-/* Enumeration of valid indexes into optab_table. */
-enum optab_index
-{
- OTI_add,
- OTI_addv,
- OTI_sub,
- OTI_subv,
-
- /* Signed and fp multiply */
- OTI_smul,
- OTI_smulv,
- /* Signed multiply, return high word */
- OTI_smul_highpart,
- OTI_umul_highpart,
- /* Signed multiply with result one machine mode wider than args */
- OTI_smul_widen,
- OTI_umul_widen,
-
- /* Signed divide */
- OTI_sdiv,
- OTI_sdivv,
- /* Signed divide-and-remainder in one */
- OTI_sdivmod,
- OTI_udiv,
- OTI_udivmod,
- /* Signed remainder */
- OTI_smod,
- OTI_umod,
- /* Optab for floating divide. */
- OTI_flodiv,
- /* Convert float to integer in float fmt */
- OTI_ftrunc,
-
- /* Logical and */
- OTI_and,
- /* Logical or */
- OTI_ior,
- /* Logical xor */
- OTI_xor,
-
- /* Arithmetic shift left */
- OTI_ashl,
- /* Logical shift right */
- OTI_lshr,
- /* Arithmetic shift right */
- OTI_ashr,
- /* Rotate left */
- OTI_rotl,
- /* Rotate right */
- OTI_rotr,
- /* Signed and floating-point minimum value */
- OTI_smin,
- /* Signed and floating-point maximum value */
- OTI_smax,
- /* Unsigned minimum value */
- OTI_umin,
- /* Unsigned maximum value */
- OTI_umax,
-
- /* Move instruction. */
- OTI_mov,
- /* Move, preserving high part of register. */
- OTI_movstrict,
-
- /* Unary operations */
- /* Negation */
- OTI_neg,
- OTI_negv,
- /* Abs value */
- OTI_abs,
- OTI_absv,
- /* Bitwise not */
- OTI_one_cmpl,
- /* Find first bit set */
- OTI_ffs,
- /* Square root */
- OTI_sqrt,
- /* Sine */
- OTI_sin,
- /* Cosine */
- OTI_cos,
-
- /* Compare insn; two operands. */
- OTI_cmp,
- /* Used only for libcalls for unsigned comparisons. */
- OTI_ucmp,
- /* tst insn; compare one operand against 0 */
- OTI_tst,
-
- /* String length */
- OTI_strlen,
-
- /* Combined compare & jump/store flags/move operations. */
- OTI_cbranch,
- OTI_cmov,
- OTI_cstore,
-
- OTI_MAX
-};
-
-extern optab optab_table[OTI_MAX];
-
-#define add_optab (optab_table[OTI_add])
-#define sub_optab (optab_table[OTI_sub])
-#define smul_optab (optab_table[OTI_smul])
-#define addv_optab (optab_table[OTI_addv])
-#define subv_optab (optab_table[OTI_subv])
-#define smul_highpart_optab (optab_table[OTI_smul_highpart])
-#define umul_highpart_optab (optab_table[OTI_umul_highpart])
-#define smul_widen_optab (optab_table[OTI_smul_widen])
-#define umul_widen_optab (optab_table[OTI_umul_widen])
-#define sdiv_optab (optab_table[OTI_sdiv])
-#define smulv_optab (optab_table[OTI_smulv])
-#define sdivv_optab (optab_table[OTI_sdivv])
-#define sdivmod_optab (optab_table[OTI_sdivmod])
-#define udiv_optab (optab_table[OTI_udiv])
-#define udivmod_optab (optab_table[OTI_udivmod])
-#define smod_optab (optab_table[OTI_smod])
-#define umod_optab (optab_table[OTI_umod])
-#define flodiv_optab (optab_table[OTI_flodiv])
-#define ftrunc_optab (optab_table[OTI_ftrunc])
-#define and_optab (optab_table[OTI_and])
-#define ior_optab (optab_table[OTI_ior])
-#define xor_optab (optab_table[OTI_xor])
-#define ashl_optab (optab_table[OTI_ashl])
-#define lshr_optab (optab_table[OTI_lshr])
-#define ashr_optab (optab_table[OTI_ashr])
-#define rotl_optab (optab_table[OTI_rotl])
-#define rotr_optab (optab_table[OTI_rotr])
-#define smin_optab (optab_table[OTI_smin])
-#define smax_optab (optab_table[OTI_smax])
-#define umin_optab (optab_table[OTI_umin])
-#define umax_optab (optab_table[OTI_umax])
-
-#define mov_optab (optab_table[OTI_mov])
-#define movstrict_optab (optab_table[OTI_movstrict])
-
-#define neg_optab (optab_table[OTI_neg])
-#define negv_optab (optab_table[OTI_negv])
-#define abs_optab (optab_table[OTI_abs])
-#define absv_optab (optab_table[OTI_absv])
-#define one_cmpl_optab (optab_table[OTI_one_cmpl])
-#define ffs_optab (optab_table[OTI_ffs])
-#define sqrt_optab (optab_table[OTI_sqrt])
-#define sin_optab (optab_table[OTI_sin])
-#define cos_optab (optab_table[OTI_cos])
-
-#define cmp_optab (optab_table[OTI_cmp])
-#define ucmp_optab (optab_table[OTI_ucmp])
-#define tst_optab (optab_table[OTI_tst])
-
-#define strlen_optab (optab_table[OTI_strlen])
-
-#define cbranch_optab (optab_table[OTI_cbranch])
-#define cmov_optab (optab_table[OTI_cmov])
-#define cstore_optab (optab_table[OTI_cstore])
-
-/* Tables of patterns for extending one integer mode to another. */
-extern enum insn_code extendtab[MAX_MACHINE_MODE][MAX_MACHINE_MODE][2];
-
-/* Tables of patterns for converting between fixed and floating point. */
-extern enum insn_code fixtab[NUM_MACHINE_MODES][NUM_MACHINE_MODES][2];
-extern enum insn_code fixtrunctab[NUM_MACHINE_MODES][NUM_MACHINE_MODES][2];
-extern enum insn_code floattab[NUM_MACHINE_MODES][NUM_MACHINE_MODES][2];
-
-/* Contains the optab used for each rtx code. */
-extern optab code_to_optab[NUM_RTX_CODE + 1];
-
-/* Passed to expand_binop and expand_unop to say which options to try to use
- if the requested operation can't be open-coded on the requisite mode.
- Either OPTAB_LIB or OPTAB_LIB_WIDEN says try using a library call.
- Either OPTAB_WIDEN or OPTAB_LIB_WIDEN says try using a wider mode.
- OPTAB_MUST_WIDEN says try widening and don't try anything else. */
+/* Passed to expand_simple_binop and expand_binop to say which options
+ to try to use if the requested operation can't be open-coded on the
+ requisite mode. Either OPTAB_LIB or OPTAB_LIB_WIDEN says try using
+ a library call. Either OPTAB_WIDEN or OPTAB_LIB_WIDEN says try
+ using a wider mode. OPTAB_MUST_WIDEN says try widening and don't
+ try anything else. */
enum optab_methods
{
OPTAB_MUST_WIDEN
};
-/* Enumeration of indexes into libfunc_table. */
-enum libfunc_index
-{
- LTI_extendsfdf2,
- LTI_extendsfxf2,
- LTI_extendsftf2,
- LTI_extenddfxf2,
- LTI_extenddftf2,
-
- LTI_truncdfsf2,
- LTI_truncxfsf2,
- LTI_trunctfsf2,
- LTI_truncxfdf2,
- LTI_trunctfdf2,
-
- LTI_memcpy,
- LTI_bcopy,
- LTI_memcmp,
- LTI_bcmp,
- LTI_memset,
- LTI_bzero,
-
- LTI_unwind_resume,
- LTI_eh_personality,
- LTI_setjmp,
- LTI_longjmp,
- LTI_unwind_sjlj_register,
- LTI_unwind_sjlj_unregister,
-
- LTI_eqhf2,
- LTI_nehf2,
- LTI_gthf2,
- LTI_gehf2,
- LTI_lthf2,
- LTI_lehf2,
- LTI_unordhf2,
-
- LTI_eqsf2,
- LTI_nesf2,
- LTI_gtsf2,
- LTI_gesf2,
- LTI_ltsf2,
- LTI_lesf2,
- LTI_unordsf2,
-
- LTI_eqdf2,
- LTI_nedf2,
- LTI_gtdf2,
- LTI_gedf2,
- LTI_ltdf2,
- LTI_ledf2,
- LTI_unorddf2,
-
- LTI_eqxf2,
- LTI_nexf2,
- LTI_gtxf2,
- LTI_gexf2,
- LTI_ltxf2,
- LTI_lexf2,
- LTI_unordxf2,
-
- LTI_eqtf2,
- LTI_netf2,
- LTI_gttf2,
- LTI_getf2,
- LTI_lttf2,
- LTI_letf2,
- LTI_unordtf2,
-
- LTI_floatsisf,
- LTI_floatdisf,
- LTI_floattisf,
-
- LTI_floatsidf,
- LTI_floatdidf,
- LTI_floattidf,
-
- LTI_floatsixf,
- LTI_floatdixf,
- LTI_floattixf,
-
- LTI_floatsitf,
- LTI_floatditf,
- LTI_floattitf,
-
- LTI_fixsfsi,
- LTI_fixsfdi,
- LTI_fixsfti,
-
- LTI_fixdfsi,
- LTI_fixdfdi,
- LTI_fixdfti,
-
- LTI_fixxfsi,
- LTI_fixxfdi,
- LTI_fixxfti,
-
- LTI_fixtfsi,
- LTI_fixtfdi,
- LTI_fixtfti,
-
- LTI_fixunssfsi,
- LTI_fixunssfdi,
- LTI_fixunssfti,
-
- LTI_fixunsdfsi,
- LTI_fixunsdfdi,
- LTI_fixunsdfti,
-
- LTI_fixunsxfsi,
- LTI_fixunsxfdi,
- LTI_fixunsxfti,
-
- LTI_fixunstfsi,
- LTI_fixunstfdi,
- LTI_fixunstfti,
-
- LTI_chkr_check_addr,
- LTI_chkr_set_right,
- LTI_chkr_copy_bitmap,
- LTI_chkr_check_exec,
- LTI_chkr_check_str,
-
- LTI_profile_function_entry,
- LTI_profile_function_exit,
-
- LTI_MAX
-};
-
-/* SYMBOL_REF rtx's for the library functions that are called
- implicitly and not via optabs. */
-extern rtx libfunc_table[LTI_MAX];
-
-/* Accessor macros for libfunc_table. */
-#define extendsfdf2_libfunc (libfunc_table[LTI_extendsfdf2])
-#define extendsfxf2_libfunc (libfunc_table[LTI_extendsfxf2])
-#define extendsftf2_libfunc (libfunc_table[LTI_extendsftf2])
-#define extenddfxf2_libfunc (libfunc_table[LTI_extenddfxf2])
-#define extenddftf2_libfunc (libfunc_table[LTI_extenddftf2])
-
-#define truncdfsf2_libfunc (libfunc_table[LTI_truncdfsf2])
-#define truncxfsf2_libfunc (libfunc_table[LTI_truncxfsf2])
-#define trunctfsf2_libfunc (libfunc_table[LTI_trunctfsf2])
-#define truncxfdf2_libfunc (libfunc_table[LTI_truncxfdf2])
-#define trunctfdf2_libfunc (libfunc_table[LTI_trunctfdf2])
-
-#define memcpy_libfunc (libfunc_table[LTI_memcpy])
-#define bcopy_libfunc (libfunc_table[LTI_bcopy])
-#define memcmp_libfunc (libfunc_table[LTI_memcmp])
-#define bcmp_libfunc (libfunc_table[LTI_bcmp])
-#define memset_libfunc (libfunc_table[LTI_memset])
-#define bzero_libfunc (libfunc_table[LTI_bzero])
-
-#define unwind_resume_libfunc (libfunc_table[LTI_unwind_resume])
-#define eh_personality_libfunc (libfunc_table[LTI_eh_personality])
-#define setjmp_libfunc (libfunc_table[LTI_setjmp])
-#define longjmp_libfunc (libfunc_table[LTI_longjmp])
-#define unwind_sjlj_register_libfunc (libfunc_table[LTI_unwind_sjlj_register])
-#define unwind_sjlj_unregister_libfunc \
- (libfunc_table[LTI_unwind_sjlj_unregister])
-
-#define eqhf2_libfunc (libfunc_table[LTI_eqhf2])
-#define nehf2_libfunc (libfunc_table[LTI_nehf2])
-#define gthf2_libfunc (libfunc_table[LTI_gthf2])
-#define gehf2_libfunc (libfunc_table[LTI_gehf2])
-#define lthf2_libfunc (libfunc_table[LTI_lthf2])
-#define lehf2_libfunc (libfunc_table[LTI_lehf2])
-#define unordhf2_libfunc (libfunc_table[LTI_unordhf2])
-
-#define eqsf2_libfunc (libfunc_table[LTI_eqsf2])
-#define nesf2_libfunc (libfunc_table[LTI_nesf2])
-#define gtsf2_libfunc (libfunc_table[LTI_gtsf2])
-#define gesf2_libfunc (libfunc_table[LTI_gesf2])
-#define ltsf2_libfunc (libfunc_table[LTI_ltsf2])
-#define lesf2_libfunc (libfunc_table[LTI_lesf2])
-#define unordsf2_libfunc (libfunc_table[LTI_unordsf2])
-
-#define eqdf2_libfunc (libfunc_table[LTI_eqdf2])
-#define nedf2_libfunc (libfunc_table[LTI_nedf2])
-#define gtdf2_libfunc (libfunc_table[LTI_gtdf2])
-#define gedf2_libfunc (libfunc_table[LTI_gedf2])
-#define ltdf2_libfunc (libfunc_table[LTI_ltdf2])
-#define ledf2_libfunc (libfunc_table[LTI_ledf2])
-#define unorddf2_libfunc (libfunc_table[LTI_unorddf2])
-
-#define eqxf2_libfunc (libfunc_table[LTI_eqxf2])
-#define nexf2_libfunc (libfunc_table[LTI_nexf2])
-#define gtxf2_libfunc (libfunc_table[LTI_gtxf2])
-#define gexf2_libfunc (libfunc_table[LTI_gexf2])
-#define ltxf2_libfunc (libfunc_table[LTI_ltxf2])
-#define lexf2_libfunc (libfunc_table[LTI_lexf2])
-#define unordxf2_libfunc (libfunc_table[LTI_unordxf2])
-
-#define eqtf2_libfunc (libfunc_table[LTI_eqtf2])
-#define netf2_libfunc (libfunc_table[LTI_netf2])
-#define gttf2_libfunc (libfunc_table[LTI_gttf2])
-#define getf2_libfunc (libfunc_table[LTI_getf2])
-#define lttf2_libfunc (libfunc_table[LTI_lttf2])
-#define letf2_libfunc (libfunc_table[LTI_letf2])
-#define unordtf2_libfunc (libfunc_table[LTI_unordtf2])
-
-#define floatsisf_libfunc (libfunc_table[LTI_floatsisf])
-#define floatdisf_libfunc (libfunc_table[LTI_floatdisf])
-#define floattisf_libfunc (libfunc_table[LTI_floattisf])
-
-#define floatsidf_libfunc (libfunc_table[LTI_floatsidf])
-#define floatdidf_libfunc (libfunc_table[LTI_floatdidf])
-#define floattidf_libfunc (libfunc_table[LTI_floattidf])
-
-#define floatsixf_libfunc (libfunc_table[LTI_floatsixf])
-#define floatdixf_libfunc (libfunc_table[LTI_floatdixf])
-#define floattixf_libfunc (libfunc_table[LTI_floattixf])
-
-#define floatsitf_libfunc (libfunc_table[LTI_floatsitf])
-#define floatditf_libfunc (libfunc_table[LTI_floatditf])
-#define floattitf_libfunc (libfunc_table[LTI_floattitf])
-
-#define fixsfsi_libfunc (libfunc_table[LTI_fixsfsi])
-#define fixsfdi_libfunc (libfunc_table[LTI_fixsfdi])
-#define fixsfti_libfunc (libfunc_table[LTI_fixsfti])
-
-#define fixdfsi_libfunc (libfunc_table[LTI_fixdfsi])
-#define fixdfdi_libfunc (libfunc_table[LTI_fixdfdi])
-#define fixdfti_libfunc (libfunc_table[LTI_fixdfti])
-
-#define fixxfsi_libfunc (libfunc_table[LTI_fixxfsi])
-#define fixxfdi_libfunc (libfunc_table[LTI_fixxfdi])
-#define fixxfti_libfunc (libfunc_table[LTI_fixxfti])
-
-#define fixtfsi_libfunc (libfunc_table[LTI_fixtfsi])
-#define fixtfdi_libfunc (libfunc_table[LTI_fixtfdi])
-#define fixtfti_libfunc (libfunc_table[LTI_fixtfti])
-
-#define fixunssfsi_libfunc (libfunc_table[LTI_fixunssfsi])
-#define fixunssfdi_libfunc (libfunc_table[LTI_fixunssfdi])
-#define fixunssfti_libfunc (libfunc_table[LTI_fixunssfti])
-
-#define fixunsdfsi_libfunc (libfunc_table[LTI_fixunsdfsi])
-#define fixunsdfdi_libfunc (libfunc_table[LTI_fixunsdfdi])
-#define fixunsdfti_libfunc (libfunc_table[LTI_fixunsdfti])
-
-#define fixunsxfsi_libfunc (libfunc_table[LTI_fixunsxfsi])
-#define fixunsxfdi_libfunc (libfunc_table[LTI_fixunsxfdi])
-#define fixunsxfti_libfunc (libfunc_table[LTI_fixunsxfti])
-
-#define fixunstfsi_libfunc (libfunc_table[LTI_fixunstfsi])
-#define fixunstfdi_libfunc (libfunc_table[LTI_fixunstfdi])
-#define fixunstfti_libfunc (libfunc_table[LTI_fixunstfti])
-
-#define chkr_check_addr_libfunc (libfunc_table[LTI_chkr_check_addr])
-#define chkr_set_right_libfunc (libfunc_table[LTI_chkr_set_right])
-#define chkr_copy_bitmap_libfunc (libfunc_table[LTI_chkr_copy_bitmap])
-#define chkr_check_exec_libfunc (libfunc_table[LTI_chkr_check_exec])
-#define chkr_check_str_libfunc (libfunc_table[LTI_chkr_check_str])
-
-#define profile_function_entry_libfunc (libfunc_table[LTI_profile_function_entry])
-#define profile_function_exit_libfunc (libfunc_table[LTI_profile_function_exit])
-\f
-typedef rtx (*rtxfun) PARAMS ((rtx));
-
-/* Indexed by the rtx-code for a conditional (eg. EQ, LT,...)
- gives the gen_function to make a branch to test that condition. */
-
-extern rtxfun bcc_gen_fctn[NUM_RTX_CODE];
-
-/* Indexed by the rtx-code for a conditional (eg. EQ, LT,...)
- gives the insn code to make a store-condition insn
- to test that condition. */
-
-extern enum insn_code setcc_gen_code[NUM_RTX_CODE];
-
-#ifdef HAVE_conditional_move
-/* Indexed by the machine mode, gives the insn code to make a conditional
- move insn. */
-
-extern enum insn_code movcc_gen_code[NUM_MACHINE_MODES];
-#endif
-
-/* This array records the insn_code of insns to perform block moves. */
-extern enum insn_code movstr_optab[NUM_MACHINE_MODES];
+/* Generate code for a simple binary or unary operation. "Simple" in
+ this case means "can be unambiguously described by a (mode, code)
+ pair and mapped to a single optab." */
+extern rtx expand_simple_binop PARAMS ((enum machine_mode, enum rtx_code, rtx,
+ rtx, rtx, int, enum optab_methods));
+extern rtx expand_simple_unop PARAMS ((enum machine_mode, enum rtx_code,
+ rtx, rtx, int));
-/* This array records the insn_code of insns to perform block clears. */
-extern enum insn_code clrstr_optab[NUM_MACHINE_MODES];
+/* Report whether the machine description contains an insn which can
+ perform the operation described by CODE and MODE. */
+extern int have_insn_for PARAMS ((enum rtx_code, enum machine_mode));
-/* Define functions given in optabs.c. */
-
-/* Expand a binary operation given optab and rtx operands. */
-extern rtx expand_binop PARAMS ((enum machine_mode, optab, rtx, rtx, rtx,
- int, enum optab_methods));
-
-/* Expand a binary operation with both signed and unsigned forms. */
-extern rtx sign_expand_binop PARAMS ((enum machine_mode, optab, optab, rtx,
- rtx, rtx, int, enum optab_methods));
-
-/* Generate code to perform an operation on two operands with two results. */
-extern int expand_twoval_binop PARAMS ((optab, rtx, rtx, rtx, rtx, int));
-
-/* Expand a unary arithmetic operation given optab rtx operand. */
-extern rtx expand_unop PARAMS ((enum machine_mode, optab, rtx, rtx, int));
-
-/* Expand the absolute value operation. */
-extern rtx expand_abs PARAMS ((enum machine_mode, rtx, rtx, int, int));
-
-/* Expand the complex absolute value operation. */
-extern rtx expand_complex_abs PARAMS ((enum machine_mode, rtx, rtx, int));
-
-/* Generate an instruction with a given INSN_CODE with an output and
- an input. */
-extern void emit_unop_insn PARAMS ((int, rtx, rtx, enum rtx_code));
-
-/* Emit code to perform a series of operations on a multi-word quantity, one
- word at a time. */
-extern rtx emit_no_conflict_block PARAMS ((rtx, rtx, rtx, rtx, rtx));
-
-/* Emit code to make a call to a constant function or a library call. */
+/* Emit code to make a call to a constant function or a library call. */
extern void emit_libcall_block PARAMS ((rtx, rtx, rtx, rtx));
-/* Emit one rtl instruction to store zero in specified rtx. */
-extern void emit_clr_insn PARAMS ((rtx));
-
-/* Emit one rtl insn to store 1 in specified rtx assuming it contains 0. */
-extern void emit_0_to_1_insn PARAMS ((rtx));
-
-/* Emit one rtl insn to compare two rtx's. */
-extern void emit_cmp_insn PARAMS ((rtx, rtx, enum rtx_code, rtx,
- enum machine_mode, int, unsigned int));
+/* Create but don't emit one rtl instruction to perform certain operations.
+ Modes must match; operands must meet the operation's predicates.
+ Likewise for subtraction and for just copying.
+ These do not call protect_from_queue; caller must do so. */
+extern rtx gen_add2_insn PARAMS ((rtx, rtx));
+extern rtx gen_add3_insn PARAMS ((rtx, rtx, rtx));
+extern rtx gen_sub2_insn PARAMS ((rtx, rtx));
+extern rtx gen_sub3_insn PARAMS ((rtx, rtx, rtx));
+extern rtx gen_move_insn PARAMS ((rtx, rtx));
+extern int have_add2_insn PARAMS ((rtx, rtx));
+extern int have_sub2_insn PARAMS ((rtx, rtx));
/* Emit a pair of rtl insns to compare two rtx's and to jump
to a label if the comparison is true. */
extern void emit_cmp_and_jump_insns PARAMS ((rtx, rtx, enum rtx_code, rtx,
- enum machine_mode, int,
- unsigned int, rtx));
-
-/* The various uses that a comparison can have; used by can_compare_p:
- jumps, conditional moves, store flag operations. */
-enum can_compare_purpose
-{
- ccp_jump,
- ccp_cmov,
- ccp_store_flag
-};
-
-/* Nonzero if a compare of mode MODE can be done straightforwardly
- (without splitting it into pieces). */
-extern int can_compare_p PARAMS ((enum rtx_code, enum machine_mode,
- enum can_compare_purpose));
-
-extern void prepare_cmp_insn PARAMS ((rtx *, rtx *, enum rtx_code *, rtx,
- enum machine_mode *, int *, int,
- enum can_compare_purpose));
-
-extern rtx prepare_operand PARAMS ((int, rtx, int, enum machine_mode,
- enum machine_mode, int));
+ enum machine_mode, int, rtx));
/* Generate code to indirectly jump to a location given in the rtx LOC. */
extern void emit_indirect_jump PARAMS ((rtx));
#endif
-/* Create but don't emit one rtl instruction to add one rtx into another.
- Modes must match; operands must meet the operation's predicates.
- Likewise for subtraction and for just copying.
- These do not call protect_from_queue; caller must do so. */
-extern rtx gen_add2_insn PARAMS ((rtx, rtx));
-extern rtx gen_sub2_insn PARAMS ((rtx, rtx));
-extern rtx gen_move_insn PARAMS ((rtx, rtx));
-extern int have_add2_insn PARAMS ((enum machine_mode));
-extern int have_sub2_insn PARAMS ((enum machine_mode));
-
-/* Return the INSN_CODE to use for an extend operation. */
-extern enum insn_code can_extend_p PARAMS ((enum machine_mode,
- enum machine_mode, int));
-
-/* Generate the body of an insn to extend Y (with mode MFROM)
- into X (with mode MTO). Do zero-extension if UNSIGNEDP is nonzero. */
-extern rtx gen_extend_insn PARAMS ((rtx, rtx, enum machine_mode,
- enum machine_mode, int));
-
-/* Initialize the tables that control conversion between fixed and
- floating values. */
-extern void init_fixtab PARAMS ((void));
-extern void init_floattab PARAMS ((void));
-
-/* Generate code for a FLOAT_EXPR. */
-extern void expand_float PARAMS ((rtx, rtx, int));
-
-/* Generate code for a FIX_EXPR. */
-extern void expand_fix PARAMS ((rtx, rtx, int));
-
-/* Call this to initialize an optab function entry. */
-extern rtx init_one_libfunc PARAMS ((const char *));
-
-/* Call this once to initialize the contents of the optabs
- appropriately for the current target machine. */
-extern void init_optabs PARAMS ((void));
\f
/* Functions from expmed.c: */
/* Functions from builtins.c: */
#ifdef TREE_CODE
extern rtx expand_builtin PARAMS ((tree, rtx, rtx, enum machine_mode, int));
-extern tree expand_tree_builtin PARAMS ((tree, tree, tree));
extern void std_expand_builtin_va_start PARAMS ((int, tree, rtx));
extern rtx std_expand_builtin_va_arg PARAMS ((tree, tree));
extern rtx expand_builtin_va_arg PARAMS ((tree, tree));
+extern void default_init_builtins PARAMS ((void));
+extern rtx default_expand_builtin PARAMS ((tree, rtx, rtx,
+ enum machine_mode, int));
#endif
extern void expand_builtin_setjmp_setup PARAMS ((rtx, rtx));
extern void record_alias_subset PARAMS ((HOST_WIDE_INT,
HOST_WIDE_INT));
extern HOST_WIDE_INT new_alias_set PARAMS ((void));
+extern int can_address_p PARAMS ((tree));
\f
/* Functions from expr.c: */
rtx, int));
/* Emit code to move a block Y to a block X. */
-extern rtx emit_block_move PARAMS ((rtx, rtx, rtx, unsigned int));
+extern rtx emit_block_move PARAMS ((rtx, rtx, rtx));
/* Copy all or part of a value X into registers starting at REGNO.
The number of registers to be filled is NREGS. */
/* Load a BLKmode value into non-consecutive registers represented by a
PARALLEL. */
-extern void emit_group_load PARAMS ((rtx, rtx, int, unsigned int));
+extern void emit_group_load PARAMS ((rtx, rtx, int));
/* Store a BLKmode value from non-consecutive registers represented by a
PARALLEL. */
-extern void emit_group_store PARAMS ((rtx, rtx, int, unsigned int));
+extern void emit_group_store PARAMS ((rtx, rtx, int));
#ifdef TREE_CODE
-/* Copy BLKmode object from a set of registers. */
+/* Copy BLKmode object from a set of registers. */
extern rtx copy_blkmode_from_reg PARAMS ((rtx,rtx,tree));
#endif
extern void use_group_regs PARAMS ((rtx *, rtx));
/* Write zeros through the storage of OBJECT.
- If OBJECT has BLKmode, SIZE is its length in bytes and ALIGN is its
- alignment. */
-extern rtx clear_storage PARAMS ((rtx, rtx, unsigned int));
+ If OBJECT has BLKmode, SIZE is its length in bytes. */
+extern rtx clear_storage PARAMS ((rtx, rtx));
/* Return non-zero if it is desirable to store LEN bytes generated by
CONSTFUN with several move instructions by store_by_pieces
unsigned int, int, rtx, int, rtx, rtx,
int, rtx));
-/* Expand an assignment that stores the value of FROM into TO. */
+/* Expand an assignment that stores the value of FROM into TO. */
extern rtx expand_assignment PARAMS ((tree, tree, int, int));
/* Generate code for computing expression EXP,
Useful after calling expand_expr with 1 as sum_ok. */
extern rtx force_operand PARAMS ((rtx, rtx));
-#ifdef TREE_CODE
+/* Return an object on the placeholder list that matches EXP, a
+ PLACEHOLDER_EXPR. An object "matches" if it is of the type of the
+ PLACEHOLDER_EXPR or a pointer type to it. For further information, see
+ tree.def. If no such object is found, abort. If PLIST is nonzero, it is
+ a location which initially points to a starting location in the
+ placeholder list (zero means start of the list) and where a pointer into
+ the placeholder list at which the object is found is placed. */
+extern tree find_placeholder PARAMS ((tree, tree *));
+
/* Generate code for computing expression EXP.
An rtx for the computed value is returned. The value is never null.
In the case of a void EXP, const0_rtx is returned. */
extern rtx expand_expr PARAMS ((tree, rtx, enum machine_mode,
enum expand_modifier));
-#endif
/* At the start of a function, record that we have no previously-pushed
arguments waiting to be popped. */
/* Generate rtl to compare two rtx's, will call emit_cmp_insn. */
extern rtx compare_from_rtx PARAMS ((rtx, rtx, enum rtx_code, int,
- enum machine_mode, rtx, unsigned int));
+ enum machine_mode, rtx));
extern void do_compare_rtx_and_jump PARAMS ((rtx, rtx, enum rtx_code, int,
enum machine_mode, rtx,
- unsigned int, rtx, rtx));
+ rtx, rtx));
+
+/* Two different ways of generating switch statements. */
+extern int try_casesi PARAMS ((tree, tree, tree, tree, rtx, rtx));
+extern int try_tablejump PARAMS ((tree, tree, tree, tree, rtx, rtx));
+
+/* Smallest number of adjacent cases before we use a jump table.
+ XXX Should be a target hook. */
+extern unsigned int case_values_threshold PARAMS ((void));
-/* Generate a tablejump instruction (used for switch statements). */
-extern void do_tablejump PARAMS ((rtx, enum machine_mode, rtx, rtx, rtx));
\f
#ifdef TREE_CODE
/* rtl.h and tree.h were included. */
in its original home. This becomes invalid if any more code is emitted. */
extern rtx hard_function_value PARAMS ((tree, tree, int));
-extern rtx prepare_call_address PARAMS ((rtx, tree, rtx *, int));
+extern rtx prepare_call_address PARAMS ((rtx, tree, rtx *, int, int));
extern rtx expand_call PARAMS ((tree, rtx, int));
/* Like `memory_address' but pretent `flag_force_addr' is 0. */
extern rtx memory_address_noforce PARAMS ((enum machine_mode, rtx));
+/* Set the alias set of MEM to SET. */
+extern void set_mem_alias_set PARAMS ((rtx, HOST_WIDE_INT));
+
+/* Set the alignment of MEM to ALIGN bits. */
+extern void set_mem_align PARAMS ((rtx, unsigned int));
+
+/* Set the DECL for MEM to DECL. */
+extern void set_mem_decl PARAMS ((rtx, tree));
+
/* Return a memory reference like MEMREF, but with its mode changed
to MODE and its address changed to ADDR.
(VOIDmode means don't change the mode.
NULL for ADDR means don't change the address.) */
extern rtx change_address PARAMS ((rtx, enum machine_mode, rtx));
+/* Return a memory reference like MEMREF, but with its mode changed
+ to MODE and its address offset by OFFSET bytes. */
+#define adjust_address(MEMREF, MODE, OFFSET) \
+ adjust_address_1 (MEMREF, MODE, OFFSET, 1, 1)
+
+/* Likewise, but the reference is not required to be valid. */
+#define adjust_address_nv(MEMREF, MODE, OFFSET) \
+ adjust_address_1 (MEMREF, MODE, OFFSET, 0, 1)
+
+/* Return a memory reference like MEMREF, but with its mode changed
+ to MODE and its address changed to ADDR, which is assumed to be
+ increased by OFFSET bytes from MEMREF. */
+#define adjust_automodify_address(MEMREF, MODE, ADDR, OFFSET) \
+ adjust_automodify_address_1 (MEMREF, MODE, ADDR, OFFSET, 1)
+
+/* Likewise, but the reference is not required to be valid. */
+#define adjust_automodify_address_nv(MEMREF, MODE, ADDR, OFFSET) \
+ adjust_automodify_address_1 (MEMREF, MODE, ADDR, OFFSET, 0)
+
+extern rtx adjust_address_1 PARAMS ((rtx, enum machine_mode, HOST_WIDE_INT,
+ int, int));
+extern rtx adjust_automodify_address_1 PARAMS ((rtx, enum machine_mode,
+ rtx, HOST_WIDE_INT, int));
+
+/* Return a memory reference like MEMREF, but whose address is changed by
+ adding OFFSET, an RTX, to it. POW2 is the highest power of two factor
+ known to be in OFFSET (possibly 1). */
+extern rtx offset_address PARAMS ((rtx, rtx, HOST_WIDE_INT));
+
+/* Return a memory reference like MEMREF, but with its address changed to
+ ADDR. The caller is asserting that the actual piece of memory pointed
+ to is the same, just the form of the address is being changed, such as
+ by putting something into a register. */
+extern rtx replace_equiv_address PARAMS ((rtx, rtx));
+
+/* Likewise, but the reference is not required to be valid. */
+extern rtx replace_equiv_address_nv PARAMS ((rtx, rtx));
+
/* Return a memory reference like MEMREF, but which is known to have a
valid address. */
extern rtx validize_mem PARAMS ((rtx));
of STACK_BOUNDARY / BITS_PER_UNIT. */
extern rtx round_push PARAMS ((rtx));
+/* Return the mode desired by operand N of a particular bitfield
+ insert/extract insn, or MAX_MACHINE_MODE if no such insn is
+ available. */
+
+enum extraction_pattern { EP_insv, EP_extv, EP_extzv };
+extern enum machine_mode
+mode_for_extraction PARAMS ((enum extraction_pattern, int));
+
extern rtx store_bit_field PARAMS ((rtx, unsigned HOST_WIDE_INT,
unsigned HOST_WIDE_INT,
- enum machine_mode, rtx,
- unsigned int, HOST_WIDE_INT));
+ enum machine_mode, rtx, HOST_WIDE_INT));
extern rtx extract_bit_field PARAMS ((rtx, unsigned HOST_WIDE_INT,
unsigned HOST_WIDE_INT, int, rtx,
enum machine_mode, enum machine_mode,
- unsigned int, HOST_WIDE_INT));
+ HOST_WIDE_INT));
extern rtx expand_mult PARAMS ((enum machine_mode, rtx, rtx, rtx, int));
extern rtx expand_mult_add PARAMS ((rtx, rtx, rtx, rtx,enum machine_mode, int));
extern rtx expand_mult_highpart_adjust PARAMS ((enum machine_mode, rtx, rtx, rtx, rtx, int));
extern int (*lang_safe_from_p) PARAMS ((rtx, tree));
#endif
+/* Call this once to initialize the contents of the optabs
+ appropriately for the current target machine. */
+extern void init_optabs PARAMS ((void));
extern void init_all_optabs PARAMS ((void));
+
+/* Call this to initialize an optab function entry. */
+extern rtx init_one_libfunc PARAMS ((const char *));
+
extern void do_jump_by_parts_equality_rtx PARAMS ((rtx, rtx, rtx));
extern void do_jump_by_parts_greater_rtx PARAMS ((enum machine_mode,
int, rtx, rtx, rtx,
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