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Diffstat (limited to 'gnu/gcc2/lib/expr.h')
| -rw-r--r-- | gnu/gcc2/lib/expr.h | 812 |
1 files changed, 0 insertions, 812 deletions
diff --git a/gnu/gcc2/lib/expr.h b/gnu/gcc2/lib/expr.h deleted file mode 100644 index 972c62cbf6b6..000000000000 --- a/gnu/gcc2/lib/expr.h +++ /dev/null @@ -1,812 +0,0 @@ -/* Definitions for code generation pass of GNU compiler. - Copyright (C) 1987, 1991, 1992, 1993 Free Software Foundation, Inc. - -This file is part of GNU CC. - -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. - -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. - -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 default branch cost is 1. */ -#ifndef BRANCH_COST -#define BRANCH_COST 1 -#endif - -/* The default is that we do not promote the mode of an object. */ -#ifndef PROMOTE_MODE -#define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) -#endif - -/* Macros to access the slots of a QUEUED rtx. - Here rather than in rtl.h because only the expansion pass - should ever encounter a QUEUED. */ - -/* The variable for which an increment is queued. */ -#define QUEUED_VAR(P) XEXP (P, 0) -/* If the increment has been emitted, this is the insn - that does the increment. It is zero before the increment is emitted. */ -#define QUEUED_INSN(P) XEXP (P, 1) -/* If a pre-increment copy has been generated, this is the copy - (it is a temporary reg). Zero if no copy made yet. */ -#define QUEUED_COPY(P) XEXP (P, 2) -/* This is the body to use for the insn to do the increment. - It is used to emit the increment. */ -#define QUEUED_BODY(P) XEXP (P, 3) -/* Next QUEUED in the queue. */ -#define QUEUED_NEXT(P) XEXP (P, 4) - -/* This is the 4th arg to `expand_expr'. - EXPAND_SUM means it is ok to return a PLUS rtx or MULT rtx. - EXPAND_INITIALIZER is similar but also record any labels on forced_labels. - EXPAND_CONST_ADDRESS means it is ok to return a MEM whose address - is a constant that is not a legitimate address. */ -enum expand_modifier {EXPAND_NORMAL, EXPAND_SUM, - EXPAND_CONST_ADDRESS, EXPAND_INITIALIZER}; - -/* List of labels that must never be deleted. */ -extern rtx forced_labels; - -/* List (chain of EXPR_LISTs) of pseudo-regs of SAVE_EXPRs. - So we can mark them all live at the end of the function, if stupid. */ -extern rtx save_expr_regs; - -extern int current_function_calls_alloca; -extern int current_function_outgoing_args_size; - -/* This is the offset from the arg pointer to the place where the first - anonymous arg can be found, if there is one. */ -extern rtx current_function_arg_offset_rtx; - -/* This is nonzero if the current function uses the constant pool. */ -extern int current_function_uses_const_pool; - -/* This is nonzero if the current function uses pic_offset_table_rtx. */ -extern int current_function_uses_pic_offset_table; - -/* The arg pointer hard register, or the pseudo into which it was copied. */ -extern rtx current_function_internal_arg_pointer; - -/* Nonzero means stack pops must not be deferred, and deferred stack - pops must not be output. It is nonzero inside a function call, - inside a conditional expression, inside a statement expression, - and in other cases as well. */ -extern int inhibit_defer_pop; - -/* Number of function calls seen so far in current function. */ - -extern int function_call_count; - -/* RTX for stack slot that holds the current handler for nonlocal gotos. - Zero when function does not have nonlocal labels. */ - -extern rtx nonlocal_goto_handler_slot; - -/* RTX for stack slot that holds the stack pointer value to restore - for a nonlocal goto. - Zero when function does not have nonlocal labels. */ - -extern rtx nonlocal_goto_stack_level; - -/* List (chain of TREE_LIST) of LABEL_DECLs for all nonlocal labels - (labels to which there can be nonlocal gotos from nested functions) - in this function. */ - -#ifdef TREE_CODE /* Don't lose if tree.h not included. */ -extern tree nonlocal_labels; -#endif - -#define NO_DEFER_POP (inhibit_defer_pop += 1) -#define OK_DEFER_POP (inhibit_defer_pop -= 1) - -/* Number of units that we should eventually pop off the stack. - These are the arguments to function calls that have already returned. */ -extern int pending_stack_adjust; - -/* A list of all cleanups which belong to the arguments of - function calls being expanded by expand_call. */ -#ifdef TREE_CODE /* Don't lose if tree.h not included. */ -extern tree cleanups_this_call; -#endif - -#ifdef TREE_CODE /* Don't lose if tree.h not included. */ -/* Structure to record the size of a sequence of arguments - as the sum of a tree-expression and a constant. */ - -struct args_size -{ - int constant; - tree var; -}; -#endif - -/* Add the value of the tree INC to the `struct args_size' TO. */ - -#define ADD_PARM_SIZE(TO, INC) \ -{ tree inc = (INC); \ - if (TREE_CODE (inc) == INTEGER_CST) \ - (TO).constant += TREE_INT_CST_LOW (inc); \ - else if ((TO).var == 0) \ - (TO).var = inc; \ - else \ - (TO).var = size_binop (PLUS_EXPR, (TO).var, inc); } - -#define SUB_PARM_SIZE(TO, DEC) \ -{ tree dec = (DEC); \ - if (TREE_CODE (dec) == INTEGER_CST) \ - (TO).constant -= TREE_INT_CST_LOW (dec); \ - else if ((TO).var == 0) \ - (TO).var = size_binop (MINUS_EXPR, integer_zero_node, dec); \ - else \ - (TO).var = size_binop (MINUS_EXPR, (TO).var, dec); } - -/* Convert the implicit sum in a `struct args_size' into an rtx. */ -#define ARGS_SIZE_RTX(SIZE) \ -((SIZE).var == 0 ? GEN_INT ((SIZE).constant) \ - : expand_expr (size_binop (PLUS_EXPR, (SIZE).var, \ - size_int ((SIZE).constant)), \ - NULL_RTX, VOIDmode, 0)) - -/* Convert the implicit sum in a `struct args_size' into a tree. */ -#define ARGS_SIZE_TREE(SIZE) \ -((SIZE).var == 0 ? size_int ((SIZE).constant) \ - : size_binop (PLUS_EXPR, (SIZE).var, size_int ((SIZE).constant))) - -/* Supply a default definition for FUNCTION_ARG_PADDING: - 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 -#endif - -/* Supply a default definition for FUNCTION_ARG_BOUNDARY. Normally, we let - FUNCTION_ARG_PADDING, which also pads the length, handle any needed - alignment. */ - -#ifndef FUNCTION_ARG_BOUNDARY -#define FUNCTION_ARG_BOUNDARY(MODE, TYPE) PARM_BOUNDARY -#endif - -/* Nonzero if we do not know how to pass TYPE solely in registers. - We cannot do so in the following cases: - - - if the type has variable size - - 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. - - Which padding can't be supported depends on the byte endianness. - - 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)))) - -/* 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) (TYPE_MODE (TYPE) == BLKmode) -#endif - -/* 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. - - 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. */ - -/* Everything that uses expr.h needs to define enum insn_code - but we don't list it in the Makefile dependencies just for that. */ -#include "insn-codes.h" - -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. */ -#ifdef FUNCTION_CONVERSION_BUG -/* Some compilers fail to convert a function properly to a - pointer-to-function when used as an argument. - So produce the pointer-to-function directly. - Luckily, these compilers seem to work properly when you - call the pointer-to-function. */ -#define GEN_FCN(CODE) (insn_gen_function[(int) (CODE)]) -#else -#define GEN_FCN(CODE) (*insn_gen_function[(int) (CODE)]) -#endif - -extern rtx (*const insn_gen_function[]) (); - -extern optab add_optab; -extern optab sub_optab; -extern optab smul_optab; /* Signed and floating-point multiply */ -extern optab smul_widen_optab; /* Signed multiply with result - one machine mode wider than args */ -extern optab umul_widen_optab; -extern optab sdiv_optab; /* Signed divide */ -extern optab sdivmod_optab; /* Signed divide-and-remainder in one */ -extern optab udiv_optab; -extern optab udivmod_optab; -extern optab smod_optab; /* Signed remainder */ -extern optab umod_optab; -extern optab flodiv_optab; /* Optab for floating divide. */ -extern optab ftrunc_optab; /* Convert float to integer in float fmt */ -extern optab and_optab; /* Logical and */ -extern optab ior_optab; /* Logical or */ -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 smin_optab; /* Signed and floating-point minimum value */ -extern optab smax_optab; /* Signed and floating-point maximum value */ -extern optab umin_optab; /* Unsigned minimum value */ -extern optab umax_optab; /* Unsigned maximum value */ - -extern optab mov_optab; /* Move instruction. */ -extern optab movstrict_optab; /* Move, preserving high part of register. */ - -extern optab cmp_optab; /* Compare insn; two operands. */ -extern optab tst_optab; /* tst insn; compare one operand against 0 */ - -/* Unary operations */ -extern optab neg_optab; /* Negation */ -extern optab abs_optab; /* Abs value */ -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]; - -/* 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. */ - -enum optab_methods -{ - OPTAB_DIRECT, - OPTAB_LIB, - OPTAB_WIDEN, - OPTAB_LIB_WIDEN, - OPTAB_MUST_WIDEN -}; - -/* SYMBOL_REF rtx's for the library functions that are called - 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 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 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 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; - -typedef rtx (*rtxfun) (); - -/* 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]; - -/* This array records the insn_code of insns to perform block moves. */ -extern enum insn_code movstr_optab[NUM_MACHINE_MODES]; - -/* Define functions given in optabs.c. */ - -/* Expand a binary operation given optab and rtx operands. */ -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 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 PROTO((enum machine_mode, optab, rtx, rtx, int)); - -/* Expand the complex absolute value operation. */ -extern rtx expand_complex_abs PROTO((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 PROTO((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 PROTO((rtx, rtx, rtx, rtx, rtx)); - -/* Emit code to make a call to a constant function or a library call. */ -extern void emit_libcall_block PROTO((rtx, rtx, rtx, rtx)); - -/* Emit one rtl instruction to store zero in specified rtx. */ -extern void emit_clr_insn PROTO((rtx)); - -/* Emit one rtl insn to store 1 in specified rtx assuming it contains 0. */ -extern void emit_0_to_1_insn PROTO((rtx)); - -/* 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)); - -/* 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)); - -/* Generate code to indirectly jump to a location given in the rtx LOC. */ -extern void emit_indirect_jump PROTO((rtx)); - -/* 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 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)); - -/* 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)); - -/* 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)); - -/* Initialize the tables that control conversion between fixed and - floating values. */ -extern void init_fixtab PROTO((void)); -extern void init_floattab PROTO((void)); - -/* 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)); - -/* 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)); - -/* Functions from loop.c: */ - -/* Given a JUMP_INSN, return a description of the test being made. */ -extern rtx get_condition PROTO((rtx, rtx *)); - -/* 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 PROTO((rtx, rtx, int)); - -/* Convert an rtx to specified machine mode and return the result. */ -extern rtx convert_to_mode PROTO((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)); - -/* Mark NREGS consecutive regs, starting at REGNO, as being live now. */ -extern void use_regs PROTO((int, int)); - -/* Write zeros through the storage of OBJECT. - If OBJECT has BLKmode, SIZE is its length in bytes. */ -extern void clear_storage PROTO((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 someting 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. These cannot have accurate prototypes since they have - a variable number of args. */ -extern void emit_library_call (); -extern void emit_library_call_value (); - -/* 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 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)); - -#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 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 *)); - -extern rtx expand_call PROTO((tree, rtx, int)); - -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 - -/* 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 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 PROTO((enum machine_mode, rtx)); - -/* Like `memory_address' but pretent `flag_force_addr' is 0. */ -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 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 PROTO((rtx)); - -/* Assemble the static constant template for function entry trampolines. */ -extern rtx assemble_trampoline_template PROTO((void)); - -/* Return 1 if two rtx's are equivalent in structure and elements. */ -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 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 PROTO((rtx)); - -/* Copy given rtx to a new temp reg and return that. */ -extern rtx copy_to_reg PROTO((rtx)); - -/* Like copy_to_reg but always make the reg Pmode. */ -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 PROTO((enum machine_mode, rtx)); - -/* Copy given rtx to given temp reg and return that. */ -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 PROTO((enum machine_mode, rtx)); - -/* Return given rtx, copied into a new temp reg if it was in memory. */ -extern rtx force_not_mem PROTO((rtx)); - -/* Remove some bytes from the stack. An rtx says how many. */ -extern void adjust_stack PROTO((rtx)); - -/* Add some bytes to the stack. An rtx says how many. */ -extern void anti_adjust_stack PROTO((rtx)); - -/* This enum is used for the following two functions. */ -enum save_level {SAVE_BLOCK, SAVE_FUNCTION, SAVE_NONLOCAL}; - -/* Save the stack pointer at the specified level. */ -extern void emit_stack_save PROTO((enum save_level, rtx *, rtx)); - -/* 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)); - -/* Emit code to copy function value to a new temp reg and return that reg. */ -extern rtx function_value (); - -/* 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 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 PROTO((rtx)); - -extern void emit_block_move PROTO((rtx, rtx, rtx, int)); - -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 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) (); |