/* Definitions for code generation pass of GNU compiler.
- Copyright (C) 1987, 1991 Free Software Foundation, Inc.
+ Copyright (C) 1987, 91-95, 1996 Free Software Foundation, Inc.
This file is part of GNU CC.
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, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-
-#ifndef __STDC__
-#ifndef const
-#define const
-#endif
-#endif
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
/* The default branch cost is 1. */
#ifndef BRANCH_COST
#ifdef TREE_CODE /* Don't lose if tree.h not included. */
extern tree cleanups_this_call;
#endif
+
+/* When temporaries are created by TARGET_EXPRs, they are created at
+ this level of temp_slot_level, so that they can remain allocated
+ until no longer needed. CLEANUP_POINT_EXPRs define the lifetime
+ of TARGET_EXPRs. */
+extern int target_temp_slot_level;
\f
#ifdef TREE_CODE /* Don't lose if tree.h not included. */
/* Structure to record the size of a sequence of arguments
/* Convert the implicit sum in a `struct args_size' into an rtx. */
#define ARGS_SIZE_RTX(SIZE) \
-((SIZE).var == 0 ? gen_rtx (CONST_INT, VOIDmode, (SIZE).constant) \
+((SIZE).var == 0 ? GEN_INT ((SIZE).constant) \
: expand_expr (size_binop (PLUS_EXPR, (SIZE).var, \
size_int ((SIZE).constant)), \
- 0, VOIDmode, 0))
+ NULL_RTX, VOIDmode, 0))
/* Convert the implicit sum in a `struct args_size' into a tree. */
#define ARGS_SIZE_TREE(SIZE) \
: size_binop (PLUS_EXPR, (SIZE).var, size_int ((SIZE).constant)))
/* Supply a default definition for FUNCTION_ARG_PADDING:
- usually pad upward, but pad short, non-BLKmode args downward on
+ usually pad upward, but pad short args downward on
big-endian machines. */
enum direction {none, upward, downward}; /* Value has this type. */
#ifndef FUNCTION_ARG_PADDING
-#if BYTES_BIG_ENDIAN
#define FUNCTION_ARG_PADDING(MODE, TYPE) \
- (((MODE) == BLKmode \
- ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \
- && int_size_in_bytes (TYPE) < PARM_BOUNDARY / BITS_PER_UNIT) \
- : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY) \
- ? downward : upward)
-#else
-#define FUNCTION_ARG_PADDING(MODE, TYPE) upward
-#endif
+ (! BYTES_BIG_ENDIAN \
+ ? upward \
+ : (((MODE) == BLKmode \
+ ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \
+ && int_size_in_bytes (TYPE) < (PARM_BOUNDARY / BITS_PER_UNIT)) \
+ : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY) \
+ ? downward : upward))
#endif
/* Supply a default definition for FUNCTION_ARG_BOUNDARY. Normally, we let
- if the type is marked as addressable (it is required to be constructed
into the stack)
- if the padding and mode of the type is such that a copy into a register
- would put it into the wrong part of the register
- - when STRICT_ALIGNMENT and the type is BLKmode and is is not
- aligned to a boundary corresponding to what can be loaded into a
- register. */
-
-#define MUST_PASS_IN_STACK_BAD_ALIGN(MODE,TYPE) \
- (STRICT_ALIGNMENT && MODE == BLKmode \
- && TYPE_ALIGN (TYPE) < (BIGGEST_ALIGNMENT < BITS_PER_WORD \
- ? BIGGEST_ALIGNMENT : BITS_PER_WORD))
-
-/* Which padding can't be supported depends on the byte endianness. */
+ would put it into the wrong part of the register.
+
+ Which padding can't be supported depends on the byte endianness.
-/* A value in a register is implicitly padded at the most significant end.
+ A value in a register is implicitly padded at the most significant end.
On a big-endian machine, that is the lower end in memory.
So a value padded in memory at the upper end can't go in a register.
For a little-endian machine, the reverse is true. */
-#if BYTES_BIG_ENDIAN
-#define MUST_PASS_IN_STACK_BAD_PADDING upward
-#else
-#define MUST_PASS_IN_STACK_BAD_PADDING downward
-#endif
-
#define MUST_PASS_IN_STACK(MODE,TYPE) \
((TYPE) != 0 \
&& (TREE_CODE (TYPE_SIZE (TYPE)) != INTEGER_CST \
|| TREE_ADDRESSABLE (TYPE) \
|| ((MODE) == BLKmode \
+ && ! ((TYPE) != 0 && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \
+ && 0 == (int_size_in_bytes (TYPE) \
+ % (PARM_BOUNDARY / BITS_PER_UNIT))) \
&& (FUNCTION_ARG_PADDING (MODE, TYPE) \
- == MUST_PASS_IN_STACK_BAD_PADDING)) \
- || MUST_PASS_IN_STACK_BAD_ALIGN (MODE, TYPE)))
+ == (BYTES_BIG_ENDIAN ? upward : downward)))))
-/* Nonzero if type TYPE should be returned in memory
- (even though its mode is not BLKmode).
+/* Nonzero if type TYPE should be returned in memory.
Most machines can use the following default definition. */
#ifndef RETURN_IN_MEMORY
-#define RETURN_IN_MEMORY(TYPE) 0
+#define RETURN_IN_MEMORY(TYPE) (TYPE_MODE (TYPE) == BLKmode)
#endif
\f
/* Optabs are tables saying how to generate insn bodies
extern optab add_optab;
extern optab sub_optab;
extern optab smul_optab; /* Signed and floating-point multiply */
+extern optab smul_highpart_optab; /* Signed multiply, return high word */
+extern optab umul_highpart_optab;
extern optab smul_widen_optab; /* Signed multiply with result
one machine mode wider than args */
extern optab umul_widen_optab;
extern optab xor_optab; /* Logical xor */
extern optab ashl_optab; /* Arithmetic shift left */
extern optab ashr_optab; /* Arithmetic shift right */
-extern optab lshl_optab; /* Logical shift left */
extern optab lshr_optab; /* Logical shift right */
extern optab rotl_optab; /* Rotate left */
extern optab rotr_optab; /* Rotate right */
extern optab one_cmpl_optab; /* Bitwise not */
extern optab ffs_optab; /* Find first bit set */
extern optab sqrt_optab; /* Square root */
+extern optab sin_optab; /* Sine */
+extern optab cos_optab; /* Cosine */
extern optab strlen_optab; /* String length */
+/* 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.
implicitly and not via optabs. */
extern rtx extendsfdf2_libfunc;
+extern rtx extendsfxf2_libfunc;
+extern rtx extendsftf2_libfunc;
+extern rtx extenddfxf2_libfunc;
+extern rtx extenddftf2_libfunc;
+
extern rtx truncdfsf2_libfunc;
+extern rtx truncxfsf2_libfunc;
+extern rtx trunctfsf2_libfunc;
+extern rtx truncxfdf2_libfunc;
+extern rtx trunctfdf2_libfunc;
+
extern rtx memcpy_libfunc;
extern rtx bcopy_libfunc;
extern rtx memcmp_libfunc;
extern rtx bcmp_libfunc;
extern rtx memset_libfunc;
extern rtx bzero_libfunc;
+
+extern rtx throw_libfunc;
+
+extern rtx eqhf2_libfunc;
+extern rtx nehf2_libfunc;
+extern rtx gthf2_libfunc;
+extern rtx gehf2_libfunc;
+extern rtx lthf2_libfunc;
+extern rtx lehf2_libfunc;
+
extern rtx eqsf2_libfunc;
extern rtx nesf2_libfunc;
extern rtx gtsf2_libfunc;
extern rtx gesf2_libfunc;
extern rtx ltsf2_libfunc;
extern rtx lesf2_libfunc;
+
extern rtx eqdf2_libfunc;
extern rtx nedf2_libfunc;
extern rtx gtdf2_libfunc;
extern rtx gedf2_libfunc;
extern rtx ltdf2_libfunc;
extern rtx ledf2_libfunc;
-extern rtx floatdisf_libfunc;
+
+extern rtx eqxf2_libfunc;
+extern rtx nexf2_libfunc;
+extern rtx gtxf2_libfunc;
+extern rtx gexf2_libfunc;
+extern rtx ltxf2_libfunc;
+extern rtx lexf2_libfunc;
+
+extern rtx eqtf2_libfunc;
+extern rtx netf2_libfunc;
+extern rtx gttf2_libfunc;
+extern rtx getf2_libfunc;
+extern rtx lttf2_libfunc;
+extern rtx letf2_libfunc;
+
extern rtx floatsisf_libfunc;
-extern rtx floatdidf_libfunc;
+extern rtx floatdisf_libfunc;
+extern rtx floattisf_libfunc;
+
extern rtx floatsidf_libfunc;
+extern rtx floatdidf_libfunc;
+extern rtx floattidf_libfunc;
+
+extern rtx floatsixf_libfunc;
+extern rtx floatdixf_libfunc;
+extern rtx floattixf_libfunc;
+
+extern rtx floatsitf_libfunc;
+extern rtx floatditf_libfunc;
+extern rtx floattitf_libfunc;
+
extern rtx fixsfsi_libfunc;
extern rtx fixsfdi_libfunc;
+extern rtx fixsfti_libfunc;
+
extern rtx fixdfsi_libfunc;
extern rtx fixdfdi_libfunc;
+extern rtx fixdfti_libfunc;
+
+extern rtx fixxfsi_libfunc;
+extern rtx fixxfdi_libfunc;
+extern rtx fixxfti_libfunc;
+
+extern rtx fixtfsi_libfunc;
+extern rtx fixtfdi_libfunc;
+extern rtx fixtfti_libfunc;
+
extern rtx fixunssfsi_libfunc;
extern rtx fixunssfdi_libfunc;
+extern rtx fixunssfti_libfunc;
+
extern rtx fixunsdfsi_libfunc;
extern rtx fixunsdfdi_libfunc;
+extern rtx fixunsdfti_libfunc;
+
+extern rtx fixunsxfsi_libfunc;
+extern rtx fixunsxfdi_libfunc;
+extern rtx fixunsxfti_libfunc;
+
+extern rtx fixunstfsi_libfunc;
+extern rtx fixunstfdi_libfunc;
+extern rtx fixunstfti_libfunc;
\f
typedef rtx (*rtxfun) ();
extern enum insn_code setcc_gen_code[NUM_RTX_CODE];
+#ifdef HAVE_conditional_move
+/* Indexed by the 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];
+
+/* This array records the insn_code of insns to perform block clears. */
+extern enum insn_code clrstr_optab[NUM_MACHINE_MODES];
+
+/* Define functions given in optabs.c. */
+
/* Expand a binary operation given optab and rtx operands. */
-extern rtx expand_binop ();
+extern rtx expand_binop PROTO((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 ();
+extern rtx sign_expand_binop PROTO((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 PROTO((optab, rtx, rtx, rtx, rtx, int));
/* Expand a unary arithmetic operation given optab rtx operand. */
-extern rtx expand_unop ();
+extern rtx expand_unop PROTO((enum machine_mode, optab, rtx, rtx, int));
-/* Arguments MODE, RTX: return an rtx for the negation of that value.
- May emit insns. */
-extern rtx negate_rtx ();
+/* Expand the absolute value operation. */
+extern rtx expand_abs PROTO((enum machine_mode, rtx, rtx, int, int));
-/* Expand a logical AND operation. */
-extern rtx expand_and ();
+/* Expand the complex absolute value operation. */
+extern rtx expand_complex_abs PROTO((enum machine_mode, rtx, rtx, int));
-/* Emit a store-flag operation. */
-extern rtx emit_store_flag ();
+/* Generate an instruction with a given INSN_CODE with an output and
+ an input. */
+extern void emit_unop_insn PROTO((int, rtx, rtx, enum rtx_code));
-/* Return the CODE_LABEL rtx for a LABEL_DECL, creating it if necessary. */
-extern rtx label_rtx ();
+/* Emit code to perform a series of operations on a multi-word quantity, one
+ word at a time. */
+extern rtx emit_no_conflict_block PROTO((rtx, rtx, rtx, rtx, rtx));
-/* Given a JUMP_INSN, return a description of the test being made. */
-extern rtx get_condition ();
+/* Emit code to make a call to a constant function or a library call. */
+extern void emit_libcall_block PROTO((rtx, rtx, rtx, rtx));
-/* Return the INSN_CODE to use for an extend operation. */
-extern enum insn_code can_extend_p ();
+/* Emit one rtl instruction to store zero in specified rtx. */
+extern void emit_clr_insn PROTO((rtx));
-/* Initialize the tables that control conversion between fixed and
- floating values. */
-extern void init_fixtab ();
-extern void init_floattab ();
+/* Emit one rtl insn to store 1 in specified rtx assuming it contains 0. */
+extern void emit_0_to_1_insn PROTO((rtx));
-/* Generate code for a FIX_EXPR. */
-extern void expand_fix ();
+/* Emit one rtl insn to compare two rtx's. */
+extern void emit_cmp_insn PROTO((rtx, rtx, enum rtx_code, rtx,
+ enum machine_mode, int, int));
-/* Generate code for a FLOAT_EXPR. */
-extern void expand_float ();
+/* Nonzero if a compare of mode MODE can be done straightforwardly
+ (without splitting it into pieces). */
+extern int can_compare_p PROTO((enum machine_mode));
+
+/* Emit a library call comparison between floating point X and Y.
+ COMPARISON is the rtl operator to compare with (EQ, NE, GT, etc.). */
+extern void emit_float_lib_cmp PROTO((rtx, rtx, enum rtx_code));
+
+/* Generate code to indirectly jump to a location given in the rtx LOC. */
+extern void emit_indirect_jump PROTO((rtx));
+
+#ifdef HAVE_conditional_move
+/* Emit a conditional move operation. */
+rtx emit_conditional_move PROTO((rtx, enum rtx_code, rtx, rtx,
+ enum machine_mode, rtx, rtx,
+ enum machine_mode, int));
+
+/* Return non-zero if the conditional move is supported. */
+int can_conditionally_move_p PROTO((enum machine_mode mode));
+#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 ();
-extern rtx gen_sub2_insn ();
-extern rtx gen_move_insn ();
+extern rtx gen_add2_insn PROTO((rtx, rtx));
+extern rtx gen_sub2_insn PROTO((rtx, rtx));
+extern rtx gen_move_insn PROTO((rtx, rtx));
+extern int have_add2_insn PROTO((enum machine_mode));
+extern int have_sub2_insn PROTO((enum machine_mode));
-/* Emit one rtl instruction to store zero in specified rtx. */
-extern void emit_clr_insn ();
+/* Return the INSN_CODE to use for an extend operation. */
+extern enum insn_code can_extend_p PROTO((enum machine_mode,
+ enum machine_mode, int));
-/* Emit one rtl insn to store 1 in specified rtx assuming it contains 0. */
-extern void emit_0_to_1_insn ();
+/* 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 PROTO((rtx, rtx, enum machine_mode,
+ enum machine_mode, int));
-/* Emit one rtl insn to compare two rtx's. */
-extern void emit_cmp_insn ();
+/* Initialize the tables that control conversion between fixed and
+ floating values. */
+extern void init_fixtab PROTO((void));
+extern void init_floattab PROTO((void));
-/* Generate rtl to compate two rtx's, will call emit_cmp_insn. */
-extern rtx compare_from_rtx ();
+/* Generate code for a FLOAT_EXPR. */
+extern void expand_float PROTO((rtx, rtx, int));
+
+/* Generate code for a FIX_EXPR. */
+extern void expand_fix PROTO((rtx, rtx, int));
+
+/* Call this once to initialize the contents of the optabs
+ appropriately for the current target machine. */
+extern void init_optabs PROTO((void));
+\f
+/* Functions from expmed.c: */
+
+/* Arguments MODE, RTX: return an rtx for the negation of that value.
+ May emit insns. */
+extern rtx negate_rtx PROTO((enum machine_mode, rtx));
+
+/* Expand a logical AND operation. */
+extern rtx expand_and PROTO((rtx, rtx, rtx));
+
+/* Emit a store-flag operation. */
+extern rtx emit_store_flag PROTO((rtx, enum rtx_code, rtx, rtx,
+ enum machine_mode, int, int));
+
+/* Like emit_store_flag, but always succeeds. */
+extern rtx emit_store_flag_force PROTO((rtx, enum rtx_code, rtx, rtx,
+ enum machine_mode, int, int));
+
+/* Functions from loop.c: */
+
+/* Given a JUMP_INSN, return a description of the test being made. */
+extern rtx get_condition PROTO((rtx, rtx *));
+\f
+/* Functions from expr.c: */
+
+/* This is run once per compilation to set up which modes can be used
+ directly in memory and to initialize the block move optab. */
+extern void init_expr_once PROTO((void));
+
+/* This is run at the start of compiling a function. */
+extern void init_expr PROTO((void));
+
+/* Use protect_from_queue to convert a QUEUED expression
+ into something that you can put immediately into an instruction. */
+extern rtx protect_from_queue PROTO((rtx, int));
+
+/* Perform all the pending incrementations. */
+extern void emit_queue PROTO((void));
/* Emit some rtl insns to move data between rtx's, converting machine modes.
Both modes must be floating or both fixed. */
-extern void convert_move ();
+extern void convert_move PROTO((rtx, rtx, int));
/* Convert an rtx to specified machine mode and return the result. */
-extern rtx convert_to_mode ();
+extern rtx convert_to_mode PROTO((enum machine_mode, rtx, int));
+
+/* Convert an rtx to MODE from OLDMODE and return the result. */
+extern rtx convert_modes PROTO((enum machine_mode, enum machine_mode, rtx, int));
+
+/* Emit code to move a block Y to a block X. */
+extern void emit_block_move PROTO((rtx, rtx, rtx, int));
+
+/* Copy all or part of a value X into registers starting at REGNO.
+ The number of registers to be filled is NREGS. */
+extern void move_block_to_reg PROTO((int, rtx, int, enum machine_mode));
+
+/* Copy all or part of a BLKmode value X out of registers starting at REGNO.
+ The number of registers to be filled is NREGS. */
+extern void move_block_from_reg PROTO((int, rtx, int, int));
+
+/* Load a BLKmode value into non-consecutive registers represented by a
+ PARALLEL. */
+extern void emit_group_load PROTO((rtx, rtx));
+/* Store a BLKmode value from non-consecutive registers represented by a
+ PARALLEL. */
+extern void emit_group_store PROTO((rtx, rtx));
+
+/* Mark REG as holding a parameter for the next CALL_INSN. */
+extern void use_reg PROTO((rtx *, rtx));
+/* Mark NREGS consecutive regs, starting at REGNO, as holding parameters
+ for the next CALL_INSN. */
+extern void use_regs PROTO((rtx *, int, int));
+/* Mark a PARALLEL as holding a parameter for the next CALL_INSN. */
+extern void use_group_regs PROTO((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 void clear_storage PROTO((rtx, rtx, int));
+
+/* Emit insns to set X from Y. */
+extern rtx emit_move_insn PROTO((rtx, rtx));
+
+/* Emit insns to set X from Y, with no frills. */
+extern rtx emit_move_insn_1 PROTO ((rtx, rtx));
+
+/* Push a block of length SIZE (perhaps variable)
+ and return an rtx to address the beginning of the block. */
+extern rtx push_block PROTO((rtx, int, int));
+
+/* Make an operand to push something on the stack. */
+extern rtx gen_push_operand PROTO((void));
+
+#ifdef TREE_CODE
+/* Generate code to push something onto the stack, given its mode and type. */
+extern void emit_push_insn PROTO((rtx, enum machine_mode, tree, rtx, int,
+ int, rtx, int, rtx, rtx));
+
+/* Emit library call. */
+extern void emit_library_call PVPROTO((rtx orgfun, int no_queue,
+ enum machine_mode outmode, int nargs, ...));
+extern rtx emit_library_call_value PVPROTO((rtx orgfun, rtx value, int no_queue,
+ enum machine_mode outmode, int nargs, ...));
-/* Emit code to push some arguments and call a library routine,
- storing the value in a specified place. Calling sequence is
- complicated. */
-extern void emit_library_call ();
+/* Expand an assignment that stores the value of FROM into TO. */
+extern rtx expand_assignment PROTO((tree, tree, int, int));
+
+/* Generate code for computing expression EXP,
+ and storing the value into TARGET.
+ If SUGGEST_REG is nonzero, copy the value through a register
+ and return that register, if that is possible. */
+extern rtx store_expr PROTO((tree, rtx, int));
+#endif
/* Given an rtx that may include add and multiply operations,
generate them as insns and return a pseudo-reg containing the value.
Useful after calling expand_expr with 1 as sum_ok. */
-extern rtx force_operand ();
+extern rtx force_operand PROTO((rtx, rtx));
+
+#ifdef TREE_CODE
+/* 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 PROTO((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. */
+extern void init_pending_stack_adjust PROTO((void));
+
+/* When exiting from function, if safe, clear out any pending stack adjust
+ so the adjustment won't get done. */
+extern void clear_pending_stack_adjust PROTO((void));
+
+/* Pop any previously-pushed arguments that have not been popped yet. */
+extern void do_pending_stack_adjust PROTO((void));
+#ifdef TREE_CODE
+/* Expand all cleanups up to OLD_CLEANUPS. */
+extern void expand_cleanups_to PROTO((tree));
+
+/* Generate code to evaluate EXP and jump to LABEL if the value is zero. */
+extern void jumpifnot PROTO((tree, rtx));
+
+/* Generate code to evaluate EXP and jump to LABEL if the value is nonzero. */
+extern void jumpif PROTO((tree, rtx));
+
+/* Generate code to evaluate EXP and jump to IF_FALSE_LABEL if
+ the result is zero, or IF_TRUE_LABEL if the result is one. */
+extern void do_jump PROTO((tree, rtx, rtx));
+#endif
+
+/* Generate rtl to compare two rtx's, will call emit_cmp_insn. */
+extern rtx compare_from_rtx PROTO((rtx, rtx, enum rtx_code, int,
+ enum machine_mode, rtx, int));
+
+/* Generate a tablejump instruction (used for switch statements). */
+extern void do_tablejump PROTO((rtx, enum machine_mode, rtx, rtx, rtx));
+\f
+#ifdef TREE_CODE
+/* rtl.h and tree.h were included. */
/* Return an rtx for the size in bytes of the value of an expr. */
-extern rtx expr_size ();
+extern rtx expr_size PROTO((tree));
+
+extern rtx lookup_static_chain PROTO((tree));
+
+/* Convert a stack slot address ADDR valid in function FNDECL
+ into an address valid in this function (using a static chain). */
+extern rtx fix_lexical_addr PROTO((rtx, tree));
+
+/* Return the address of the trampoline for entering nested fn FUNCTION. */
+extern rtx trampoline_address PROTO((tree));
+
+/* Return an rtx that refers to the value returned by a function
+ in its original home. This becomes invalid if any more code is emitted. */
+extern rtx hard_function_value PROTO((tree, tree));
+
+extern rtx prepare_call_address PROTO((rtx, tree, rtx *, int));
+
+extern rtx expand_call PROTO((tree, rtx, int));
-/* Return an rtx for the sum of an rtx and an integer. */
-extern rtx plus_constant ();
+extern rtx expand_shift PROTO((enum tree_code, enum machine_mode, rtx, tree, rtx, int));
+extern rtx expand_divmod PROTO((int, enum tree_code, enum machine_mode, rtx, rtx, rtx, int));
+extern void locate_and_pad_parm PROTO((enum machine_mode, tree, int, tree, struct args_size *, struct args_size *, struct args_size *));
+extern rtx expand_inline_function PROTO((tree, tree, rtx, int, tree, rtx));
+/* Return the CODE_LABEL rtx for a LABEL_DECL, creating it if necessary. */
+extern rtx label_rtx PROTO((tree));
+#endif
-extern rtx lookup_static_chain ();
+/* Indicate how an input argument register was promoted. */
+extern rtx promoted_input_arg PROTO((int, enum machine_mode *, int *));
/* Return an rtx like arg but sans any constant terms.
Returns the original rtx if it has no constant terms.
The constant terms are added and stored via a second arg. */
-extern rtx eliminate_constant_term ();
+extern rtx eliminate_constant_term PROTO((rtx, rtx *));
/* Convert arg to a valid memory address for specified machine mode,
by emitting insns to perform arithmetic if nec. */
-extern rtx memory_address ();
+extern rtx memory_address PROTO((enum machine_mode, rtx));
/* Like `memory_address' but pretent `flag_force_addr' is 0. */
-extern rtx memory_address_noforce ();
+extern rtx memory_address_noforce PROTO((enum machine_mode, rtx));
/* 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 ();
+extern rtx change_address PROTO((rtx, enum machine_mode, rtx));
/* Return a memory reference like MEMREF, but which is known to have a
valid address. */
-extern rtx validize_mem ();
-
-/* Convert a stack slot address ADDR valid in function FNDECL
- into an address valid in this function (using a static chain). */
-extern rtx fix_lexical_addr ();
-
-/* Return the address of the trampoline for entering nested fn FUNCTION. */
-extern rtx trampoline_address ();
+extern rtx validize_mem PROTO((rtx));
/* Assemble the static constant template for function entry trampolines. */
-extern rtx assemble_trampoline_template ();
+extern rtx assemble_trampoline_template PROTO((void));
/* Return 1 if two rtx's are equivalent in structure and elements. */
-extern int rtx_equal_p ();
+extern int rtx_equal_p PROTO((rtx, rtx));
/* Given rtx, return new rtx whose address won't be affected by
any side effects. It has been copied to a new temporary reg. */
-extern rtx stabilize ();
+extern rtx stabilize PROTO((rtx));
/* Given an rtx, copy all regs it refers to into new temps
and return a modified copy that refers to the new temps. */
-extern rtx copy_all_regs ();
+extern rtx copy_all_regs PROTO((rtx));
/* Copy given rtx to a new temp reg and return that. */
-extern rtx copy_to_reg ();
+extern rtx copy_to_reg PROTO((rtx));
/* Like copy_to_reg but always make the reg Pmode. */
-extern rtx copy_addr_to_reg ();
+extern rtx copy_addr_to_reg PROTO((rtx));
/* Like copy_to_reg but always make the reg the specified mode MODE. */
-extern rtx copy_to_mode_reg ();
+extern rtx copy_to_mode_reg PROTO((enum machine_mode, rtx));
/* Copy given rtx to given temp reg and return that. */
-extern rtx copy_to_suggested_reg ();
+extern rtx copy_to_suggested_reg PROTO((rtx, rtx, enum machine_mode));
/* Copy a value to a register if it isn't already a register.
Args are mode (in case value is a constant) and the value. */
-extern rtx force_reg ();
+extern rtx force_reg PROTO((enum machine_mode, rtx));
/* Return given rtx, copied into a new temp reg if it was in memory. */
-extern rtx force_not_mem ();
+extern rtx force_not_mem PROTO((rtx));
+
+#ifdef TREE_CODE
+/* Return mode and signedness to use when object is promoted. */
+extern enum machine_mode promote_mode PROTO((tree, enum machine_mode,
+ int *, int));
+#endif
/* Remove some bytes from the stack. An rtx says how many. */
-extern void adjust_stack ();
+extern void adjust_stack PROTO((rtx));
/* Add some bytes to the stack. An rtx says how many. */
-extern void anti_adjust_stack ();
+extern void anti_adjust_stack PROTO((rtx));
-/* Allocate some space on the stack dynamically and return its address. An rtx
- says how many bytes. */
-extern rtx allocate_dynamic_stack_space ();
+/* This enum is used for the following two functions. */
+enum save_level {SAVE_BLOCK, SAVE_FUNCTION, SAVE_NONLOCAL};
-/* Emit code to copy function value to a new temp reg and return that reg. */
-extern rtx function_value ();
+/* Save the stack pointer at the specified level. */
+extern void emit_stack_save PROTO((enum save_level, rtx *, rtx));
-/* Return an rtx that refers to the value returned by a function
- in its original home. This becomes invalid if any more code is emitted. */
-extern rtx hard_function_value ();
+/* Restore the stack pointer from a save area of the specified level. */
+extern void emit_stack_restore PROTO((enum save_level, rtx, rtx));
+
+/* Allocate some space on the stack dynamically and return its address. An rtx
+ says how many bytes. */
+extern rtx allocate_dynamic_stack_space PROTO((rtx, rtx, int));
/* Return an rtx that refers to the value returned by a library call
in its original home. This becomes invalid if any more code is emitted. */
-extern rtx hard_libcall_value ();
-
-/* Emit code to copy function value to a specified place. */
-extern void copy_function_value ();
+extern rtx hard_libcall_value PROTO((enum machine_mode));
/* Given an rtx, return an rtx for a value rounded up to a multiple
of STACK_BOUNDARY / BITS_PER_UNIT. */
-extern rtx round_push ();
-
-/* Push a block of length SIZE (perhaps variable)
- and return an rtx to address the beginning of the block. */
-extern rtx push_block ();
-
-/* Generate code for computing expression EXP,
- and storing the value into TARGET.
- If SUGGEST_REG is nonzero, copy the value through a register
- and return that register, if that is possible. */
-extern rtx store_expr ();
-
-extern rtx prepare_call_address ();
-extern rtx expand_call ();
-extern void emit_call_1 ();
-
-extern void emit_block_move ();
-extern void emit_push_insn ();
-extern void use_regs ();
-extern void move_block_to_reg ();
+extern rtx round_push PROTO((rtx));
-extern rtx store_bit_field ();
-extern rtx extract_bit_field ();
-extern rtx expand_shift ();
-extern rtx expand_mult ();
-extern rtx expand_divmod ();
-extern rtx expand_mult_add ();
-extern rtx expand_stmt_expr ();
-extern rtx emit_no_conflict_block ();
-extern void emit_libcall_block ();
+extern void emit_block_move PROTO((rtx, rtx, rtx, int));
-extern void jumpifnot ();
-extern void jumpif ();
-extern void do_jump ();
+extern rtx store_bit_field PROTO((rtx, int, int, enum machine_mode, rtx, int, int));
+extern rtx extract_bit_field PROTO((rtx, int, int, int, rtx, enum machine_mode, enum machine_mode, int, int));
+extern rtx expand_mult PROTO((enum machine_mode, rtx, rtx, rtx, int));
+extern rtx expand_mult_add PROTO((rtx, rtx, rtx, rtx,enum machine_mode, int));
+extern rtx expand_mult_highpart_adjust PROTO((enum machine_mode, rtx, rtx, rtx, rtx, int));
-extern rtx assemble_static_space ();
-
-extern void locate_and_pad_parm ();
-
-extern rtx expand_inline_function ();
+extern rtx assemble_static_space PROTO((int));
/* Hook called by expand_expr for language-specific tree codes.
It is up to the language front end to install a hook
if it has any such codes that expand_expr needs to know about. */
extern rtx (*lang_expand_expr) ();
+
+#ifdef TREE_CODE
+/* Build bytecode call descriptor for function SUBR. */
+extern rtx bc_build_calldesc PROTO((tree));
+
+/* Emit a type code to be used by the runtime support in handling
+ parameter passing. The type code consists of the machine mode
+ plus the minimal alignment shifted left 8 bits. */
+extern tree bc_runtime_type_code PROTO((tree));
+#endif
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