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Diffstat (limited to 'gcc-4.2.1-5666.3/gcc/expr.h')
| -rw-r--r-- | gcc-4.2.1-5666.3/gcc/expr.h | 756 |
1 files changed, 0 insertions, 756 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/expr.h b/gcc-4.2.1-5666.3/gcc/expr.h deleted file mode 100644 index 54a50073f..000000000 --- a/gcc-4.2.1-5666.3/gcc/expr.h +++ /dev/null @@ -1,756 +0,0 @@ -/* Definitions for code generation pass of GNU compiler. - Copyright (C) 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, - 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 - Free Software Foundation, Inc. - -This file is part of GCC. - -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. - -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 GCC; see the file COPYING. If not, write to the Free -Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301, USA. */ - -#ifndef GCC_EXPR_H -#define GCC_EXPR_H - -/* For inhibit_defer_pop */ -#include "function.h" -/* For XEXP, GEN_INT, rtx_code */ -#include "rtl.h" -/* For optimize_size */ -#include "flags.h" -/* For host_integerp, tree_low_cst, fold_convert, size_binop, ssize_int, - TREE_CODE, TYPE_SIZE, int_size_in_bytes, */ -#include "tree.h" -/* For GET_MODE_BITSIZE, word_mode */ -#include "machmode.h" - -/* The default branch cost is 1. */ -#ifndef BRANCH_COST -#define BRANCH_COST 1 -#endif - -/* This is the 4th arg to `expand_expr'. - EXPAND_STACK_PARM means we are possibly expanding a call param onto - the stack. - 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. - EXPAND_WRITE means we are only going to write to the resulting rtx. - EXPAND_MEMORY means we are interested in a memory result, even if - the memory is constant and we could have propagated a constant value. */ -enum expand_modifier {EXPAND_NORMAL = 0, EXPAND_STACK_PARM, EXPAND_SUM, - EXPAND_CONST_ADDRESS, EXPAND_INITIALIZER, EXPAND_WRITE, - EXPAND_MEMORY}; - -/* Prevent the compiler from deferring stack pops. See - inhibit_defer_pop for more information. */ -#define NO_DEFER_POP (inhibit_defer_pop += 1) - -/* Allow the compiler to defer stack pops. See inhibit_defer_pop for - more information. */ -#define OK_DEFER_POP (inhibit_defer_pop -= 1) - -/* If a memory-to-memory move would take MOVE_RATIO or more simple - move-instruction sequences, we will do a movmem or libcall instead. */ - -#ifndef MOVE_RATIO -#if defined (HAVE_movmemqi) || defined (HAVE_movmemhi) || defined (HAVE_movmemsi) || defined (HAVE_movmemdi) || defined (HAVE_movmemti) -#define MOVE_RATIO 2 -#else -/* If we are optimizing for space (-Os), cut down the default move ratio. */ -#define MOVE_RATIO (optimize_size ? 3 : 15) -#endif -#endif - -/* If a clear memory operation would take CLEAR_RATIO or more simple - move-instruction sequences, we will do a setmem or libcall instead. */ - -#ifndef CLEAR_RATIO -#if defined (HAVE_setmemqi) || defined (HAVE_setmemhi) || defined (HAVE_setmemsi) || defined (HAVE_setmemdi) || defined (HAVE_setmemti) -#define CLEAR_RATIO 2 -#else -/* If we are optimizing for space, cut down the default clear ratio. */ -#define CLEAR_RATIO (optimize_size ? 3 : 15) -#endif -#endif - -enum direction {none, upward, downward}; - -/* Structure to record the size of a sequence of arguments - as the sum of a tree-expression and a constant. This structure is - also used to store offsets from the stack, which might be negative, - so the variable part must be ssizetype, not sizetype. */ - -struct args_size -{ - HOST_WIDE_INT constant; - tree var; -}; - -/* Package up various arg related fields of struct args for - locate_and_pad_parm. */ -struct locate_and_pad_arg_data -{ - /* Size of this argument on the stack, rounded up for any padding it - gets. If REG_PARM_STACK_SPACE is defined, then register parms are - counted here, otherwise they aren't. */ - struct args_size size; - /* Offset of this argument from beginning of stack-args. */ - struct args_size offset; - /* Offset to the start of the stack slot. Different from OFFSET - if this arg pads downward. */ - struct args_size slot_offset; - /* The amount that the stack pointer needs to be adjusted to - force alignment for the next argument. */ - struct args_size alignment_pad; - /* Which way we should pad this arg. */ - enum direction where_pad; - /* slot_offset is at least this aligned. */ - unsigned int boundary; -}; - -/* Add the value of the tree INC to the `struct args_size' TO. */ - -#define ADD_PARM_SIZE(TO, INC) \ -do { \ - tree inc = (INC); \ - if (host_integerp (inc, 0)) \ - (TO).constant += tree_low_cst (inc, 0); \ - else if ((TO).var == 0) \ - (TO).var = fold_convert (ssizetype, inc); \ - else \ - (TO).var = size_binop (PLUS_EXPR, (TO).var, \ - fold_convert (ssizetype, inc)); \ -} while (0) - -#define SUB_PARM_SIZE(TO, DEC) \ -do { \ - tree dec = (DEC); \ - if (host_integerp (dec, 0)) \ - (TO).constant -= tree_low_cst (dec, 0); \ - else if ((TO).var == 0) \ - (TO).var = size_binop (MINUS_EXPR, ssize_int (0), \ - fold_convert (ssizetype, dec)); \ - else \ - (TO).var = size_binop (MINUS_EXPR, (TO).var, \ - fold_convert (ssizetype, dec)); \ -} while (0) - -/* Convert the implicit sum in a `struct args_size' into a tree - of type ssizetype. */ -#define ARGS_SIZE_TREE(SIZE) \ -((SIZE).var == 0 ? ssize_int ((SIZE).constant) \ - : size_binop (PLUS_EXPR, fold_convert (ssizetype, (SIZE).var), \ - ssize_int ((SIZE).constant))) - -/* 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_normal (ARGS_SIZE_TREE (SIZE))) - -/* Supply a default definition for FUNCTION_ARG_PADDING: - usually pad upward, but pad short args downward on - big-endian machines. */ - -#define DEFAULT_FUNCTION_ARG_PADDING(MODE, TYPE) \ - (! 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)) - -#ifndef FUNCTION_ARG_PADDING -#define FUNCTION_ARG_PADDING(MODE, TYPE) \ - DEFAULT_FUNCTION_ARG_PADDING ((MODE), (TYPE)) -#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 - -/* Supply a default definition of STACK_SAVEAREA_MODE for emit_stack_save. - Normally move_insn, so Pmode stack pointer. */ - -#ifndef STACK_SAVEAREA_MODE -#define STACK_SAVEAREA_MODE(LEVEL) Pmode -#endif - -/* Supply a default definition of STACK_SIZE_MODE for - allocate_dynamic_stack_space. Normally PLUS/MINUS, so word_mode. */ - -#ifndef STACK_SIZE_MODE -#define STACK_SIZE_MODE word_mode -#endif - -/* Provide default values for the macros controlling stack checking. */ - -#ifndef STACK_CHECK_BUILTIN -#define STACK_CHECK_BUILTIN 0 -#endif - -/* The default interval is one page. */ -#ifndef STACK_CHECK_PROBE_INTERVAL -#define STACK_CHECK_PROBE_INTERVAL 4096 -#endif - -/* The default is to do a store into the stack. */ -#ifndef STACK_CHECK_PROBE_LOAD -#define STACK_CHECK_PROBE_LOAD 0 -#endif - -/* This value is arbitrary, but should be sufficient for most machines. */ -#ifndef STACK_CHECK_PROTECT -#define STACK_CHECK_PROTECT (75 * UNITS_PER_WORD) -#endif - -/* Make the maximum frame size be the largest we can and still only need - one probe per function. */ -#ifndef STACK_CHECK_MAX_FRAME_SIZE -#define STACK_CHECK_MAX_FRAME_SIZE \ - (STACK_CHECK_PROBE_INTERVAL - UNITS_PER_WORD) -#endif - -/* This is arbitrary, but should be large enough everywhere. */ -#ifndef STACK_CHECK_FIXED_FRAME_SIZE -#define STACK_CHECK_FIXED_FRAME_SIZE (4 * UNITS_PER_WORD) -#endif - -/* Provide a reasonable default for the maximum size of an object to - allocate in the fixed frame. We may need to be able to make this - controllable by the user at some point. */ -#ifndef STACK_CHECK_MAX_VAR_SIZE -#define STACK_CHECK_MAX_VAR_SIZE (STACK_CHECK_MAX_FRAME_SIZE / 100) -#endif - -/* Functions from optabs.c, commonly used, and without need for the optabs - tables: */ - -/* 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_DIRECT, - OPTAB_LIB, - OPTAB_WIDEN, - OPTAB_LIB_WIDEN, - OPTAB_MUST_WIDEN -}; - -/* 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 (enum machine_mode, enum rtx_code, rtx, - rtx, rtx, int, enum optab_methods); -extern rtx expand_simple_unop (enum machine_mode, enum rtx_code, rtx, rtx, - int); - -/* Report whether the machine description contains an insn which can - perform the operation described by CODE and MODE. */ -extern int have_insn_for (enum rtx_code, enum machine_mode); - -/* Emit code to make a call to a constant function or a library call. */ -extern void emit_libcall_block (rtx, rtx, rtx, rtx); - -/* 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. */ -extern rtx gen_add2_insn (rtx, rtx); -extern rtx gen_add3_insn (rtx, rtx, rtx); -extern rtx gen_sub2_insn (rtx, rtx); -extern rtx gen_sub3_insn (rtx, rtx, rtx); -extern rtx gen_move_insn (rtx, rtx); -extern int have_add2_insn (rtx, rtx); -extern int have_sub2_insn (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 (rtx, rtx, enum rtx_code, rtx, - enum machine_mode, int, rtx); - -/* Generate code to indirectly jump to a location given in the rtx LOC. */ -extern void emit_indirect_jump (rtx); - -/* Generate a conditional trap instruction. */ -extern rtx gen_cond_trap (enum rtx_code, rtx, rtx, rtx); - -#include "insn-config.h" - -#ifdef HAVE_conditional_move -/* Emit a conditional move operation. */ -rtx emit_conditional_move (rtx, enum rtx_code, rtx, rtx, enum machine_mode, - rtx, rtx, enum machine_mode, int); - -/* Return nonzero if the conditional move is supported. */ -int can_conditionally_move_p (enum machine_mode mode); - -#endif -rtx emit_conditional_add (rtx, enum rtx_code, rtx, rtx, enum machine_mode, - rtx, rtx, enum machine_mode, int); - -rtx expand_val_compare_and_swap (rtx, rtx, rtx, rtx); -rtx expand_bool_compare_and_swap (rtx, rtx, rtx, rtx); -rtx expand_sync_operation (rtx, rtx, enum rtx_code); -rtx expand_sync_fetch_operation (rtx, rtx, enum rtx_code, bool, rtx); -rtx expand_sync_lock_test_and_set (rtx, rtx, rtx); - -/* Functions from expmed.c: */ - -/* Arguments MODE, RTX: return an rtx for the negation of that value. - May emit insns. */ -extern rtx negate_rtx (enum machine_mode, rtx); - -/* Expand a logical AND operation. */ -extern rtx expand_and (enum machine_mode, rtx, rtx, rtx); - -/* Emit a store-flag operation. */ -extern rtx emit_store_flag (rtx, enum rtx_code, rtx, rtx, enum machine_mode, - int, int); - -/* Like emit_store_flag, but always succeeds. */ -extern rtx emit_store_flag_force (rtx, enum rtx_code, rtx, rtx, - enum machine_mode, int, int); - -/* Functions from builtins.c: */ -extern rtx expand_builtin (tree, rtx, rtx, enum machine_mode, int); -extern tree std_build_builtin_va_list (void); -extern void std_expand_builtin_va_start (tree, rtx); -extern rtx default_expand_builtin (tree, rtx, rtx, enum machine_mode, int); -extern void expand_builtin_setjmp_setup (rtx, rtx); -extern void expand_builtin_setjmp_receiver (rtx); -extern rtx expand_builtin_saveregs (void); -extern void expand_builtin_trap (void); - -/* 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 (void); - -/* This is run at the start of compiling a function. */ -extern void init_expr (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 (rtx, rtx, int); - -/* Convert an rtx to specified machine mode and return the result. */ -extern rtx convert_to_mode (enum machine_mode, rtx, int); - -/* Convert an rtx to MODE from OLDMODE and return the result. */ -extern rtx convert_modes (enum machine_mode, enum machine_mode, rtx, int); - -/* Emit code to move a block Y to a block X. */ - -enum block_op_methods -{ - BLOCK_OP_NORMAL, - BLOCK_OP_NO_LIBCALL, - BLOCK_OP_CALL_PARM, - /* Like BLOCK_OP_NORMAL, but the libcall can be tail call optimized. */ - BLOCK_OP_TAILCALL -}; - -extern void init_block_move_fn (const char *); -extern void init_block_clear_fn (const char *); - -extern rtx emit_block_move (rtx, rtx, rtx, enum block_op_methods); - -/* 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 (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 (int, rtx, int); - -/* Generate a non-consecutive group of registers represented by a PARALLEL. */ -extern rtx gen_group_rtx (rtx); - -/* Load a BLKmode value into non-consecutive registers represented by a - PARALLEL. */ -extern void emit_group_load (rtx, rtx, tree, int); - -/* Similarly, but load into new temporaries. */ -extern rtx emit_group_load_into_temps (rtx, rtx, tree, int); - -/* Move a non-consecutive group of registers represented by a PARALLEL into - a non-consecutive group of registers represented by a PARALLEL. */ -extern void emit_group_move (rtx, rtx); - -/* Move a group of registers represented by a PARALLEL into pseudos. */ -extern rtx emit_group_move_into_temps (rtx); - -/* Store a BLKmode value from non-consecutive registers represented by a - PARALLEL. */ -extern void emit_group_store (rtx, rtx, tree, int); - -/* Copy BLKmode object from a set of registers. */ -extern rtx copy_blkmode_from_reg (rtx, rtx, tree); - -/* Mark REG as holding a parameter for the next CALL_INSN. */ -extern void use_reg (rtx *, rtx); - -/* Mark NREGS consecutive regs, starting at REGNO, as holding parameters - for the next CALL_INSN. */ -extern void use_regs (rtx *, int, int); - -/* Mark a PARALLEL as holding a parameter for the next CALL_INSN. */ -extern void use_group_regs (rtx *, rtx); - -/* Write zeros through the storage of OBJECT. - If OBJECT has BLKmode, SIZE is its length in bytes. */ -extern rtx clear_storage (rtx, rtx, enum block_op_methods); - -/* Expand a setmem pattern; return true if successful. */ -extern bool set_storage_via_setmem (rtx, rtx, rtx, unsigned int); - -/* Determine whether the LEN bytes can be moved by using several move - instructions. Return nonzero if a call to move_by_pieces should - succeed. */ -extern int can_move_by_pieces (unsigned HOST_WIDE_INT, unsigned int); - -/* Return nonzero if it is desirable to store LEN bytes generated by - CONSTFUN with several move instructions by store_by_pieces - function. CONSTFUNDATA is a pointer which will be passed as argument - in every CONSTFUN call. - ALIGN is maximum alignment we can assume. */ -extern int can_store_by_pieces (unsigned HOST_WIDE_INT, - rtx (*) (void *, HOST_WIDE_INT, - enum machine_mode), - void *, unsigned int); - -/* Generate several move instructions to store LEN bytes generated by - CONSTFUN to block TO. (A MEM rtx with BLKmode). CONSTFUNDATA is a - pointer which will be passed as argument in every CONSTFUN call. - ALIGN is maximum alignment we can assume. - Returns TO + LEN. */ -extern rtx store_by_pieces (rtx, unsigned HOST_WIDE_INT, - rtx (*) (void *, HOST_WIDE_INT, enum machine_mode), - void *, unsigned int, int); - -/* Emit insns to set X from Y. */ -extern rtx emit_move_insn (rtx, rtx); - -/* Emit insns to set X from Y, with no frills. */ -extern rtx emit_move_insn_1 (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 (rtx, int, int); - -/* Generate code to push something onto the stack, given its mode and type. */ -extern void emit_push_insn (rtx, enum machine_mode, tree, rtx, unsigned int, - int, rtx, int, rtx, rtx, int, rtx); - -/* Expand an assignment that stores the value of FROM into TO. */ -extern void expand_assignment (tree, tree); - -/* 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 (tree, rtx, int); - -/* 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 (rtx, rtx); - -/* Work horse for expand_expr. */ -extern rtx expand_expr_real (tree, rtx, enum machine_mode, - enum expand_modifier, rtx *); - -/* 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. */ -static inline rtx -expand_expr (tree exp, rtx target, enum machine_mode mode, - enum expand_modifier modifier) -{ - return expand_expr_real (exp, target, mode, modifier, NULL); -} - -static inline rtx -expand_normal (tree exp) -{ - return expand_expr_real (exp, NULL_RTX, VOIDmode, EXPAND_NORMAL, NULL); -} - -extern void expand_var (tree); - -/* At the start of a function, record that we have no previously-pushed - arguments waiting to be popped. */ -extern void init_pending_stack_adjust (void); - -/* Discard any pending stack adjustment. */ -extern void discard_pending_stack_adjust (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 (void); - -/* Pop any previously-pushed arguments that have not been popped yet. */ -extern void do_pending_stack_adjust (void); - -/* Return the tree node and offset if a given argument corresponds to - a string constant. */ -extern tree string_constant (tree, tree *); - -/* Generate code to evaluate EXP and jump to LABEL if the value is zero. */ -extern void jumpifnot (tree, rtx); - -/* Generate code to evaluate EXP and jump to LABEL if the value is nonzero. */ -extern void jumpif (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 (tree, rtx, rtx); - -/* Generate rtl to compare two rtx's, will call emit_cmp_insn. */ -extern rtx compare_from_rtx (rtx, rtx, enum rtx_code, int, enum machine_mode, - rtx); -extern void do_compare_rtx_and_jump (rtx, rtx, enum rtx_code, int, - enum machine_mode, rtx, rtx, rtx); - -/* Two different ways of generating switch statements. */ -extern int try_casesi (tree, tree, tree, tree, rtx, rtx); -extern int try_tablejump (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 (void); - -/* Functions from alias.c */ -#include "alias.h" - - -/* 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 (tree); - -/* Return a wide integer for the size in bytes of the value of EXP, or -1 - if the size can vary or is larger than an integer. */ -extern HOST_WIDE_INT int_expr_size (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 (tree, tree, tree, int); - -extern rtx prepare_call_address (rtx, rtx, rtx *, int, int); - -extern bool shift_return_value (enum machine_mode, bool, rtx); - -extern rtx expand_call (tree, rtx, int); - -extern void fixup_tail_calls (void); - -#ifdef TREE_CODE -extern rtx expand_shift (enum tree_code, enum machine_mode, rtx, tree, rtx, - int); -extern rtx expand_divmod (int, enum tree_code, enum machine_mode, rtx, rtx, - rtx, int); -#endif - -extern void locate_and_pad_parm (enum machine_mode, tree, int, int, tree, - struct args_size *, - struct locate_and_pad_arg_data *); - -/* Return the CODE_LABEL rtx for a LABEL_DECL, creating it if necessary. */ -extern rtx label_rtx (tree); - -/* As label_rtx, but additionally the label is placed on the forced label - list of its containing function (i.e. it is treated as reachable even - if how is not obvious). */ -extern rtx force_label_rtx (tree); - -/* Indicate how an input argument register was promoted. */ -extern rtx promoted_input_arg (unsigned 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 (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 (enum machine_mode, rtx); - -/* Like `memory_address' but pretend `flag_force_addr' is 0. */ -extern rtx memory_address_noforce (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 (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 (rtx, enum machine_mode, HOST_WIDE_INT, int, int); -extern rtx adjust_automodify_address_1 (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 (rtx, rtx, unsigned HOST_WIDE_INT); - -/* Definitions from emit-rtl.c */ -#include "emit-rtl.h" - -/* Return a memory reference like MEMREF, but with its mode widened to - MODE and adjusted by OFFSET. */ -extern rtx widen_memory_access (rtx, enum machine_mode, HOST_WIDE_INT); - -/* Return a memory reference like MEMREF, but which is known to have a - valid address. */ -extern rtx validize_mem (rtx); - -extern rtx use_anchored_address (rtx); - -/* Given REF, a MEM, and T, either the type of X or the expression - corresponding to REF, set the memory attributes. OBJECTP is nonzero - if we are making a new object of this type. */ -extern void set_mem_attributes (rtx, tree, int); - -/* Similar, except that BITPOS has not yet been applied to REF, so if - we alter MEM_OFFSET according to T then we should subtract BITPOS - expecting that it'll be added back in later. */ -extern void set_mem_attributes_minus_bitpos (rtx, tree, int, HOST_WIDE_INT); - -/* Assemble the static constant template for function entry trampolines. */ -extern rtx assemble_trampoline_template (void); - -/* Copy given rtx to a new temp reg and return that. */ -extern rtx copy_to_reg (rtx); - -/* Like copy_to_reg but always make the reg Pmode. */ -extern rtx copy_addr_to_reg (rtx); - -/* Like copy_to_reg but always make the reg the specified mode MODE. */ -extern rtx copy_to_mode_reg (enum machine_mode, rtx); - -/* Copy given rtx to given temp reg and return that. */ -extern rtx copy_to_suggested_reg (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 (enum machine_mode, rtx); - -/* Return given rtx, copied into a new temp reg if it was in memory. */ -extern rtx force_not_mem (rtx); - -/* Return mode and signedness to use when object is promoted. */ -extern enum machine_mode promote_mode (tree, enum machine_mode, int *, int); - -/* Remove some bytes from the stack. An rtx says how many. */ -extern void adjust_stack (rtx); - -/* Add some bytes to the stack. An rtx says how many. */ -extern void anti_adjust_stack (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 (enum save_level, rtx *, rtx); - -/* Restore the stack pointer from a save area of the specified level. */ -extern void emit_stack_restore (enum save_level, rtx, rtx); - -/* Invoke emit_stack_save for the nonlocal_goto_save_area. */ -extern void update_nonlocal_goto_save_area (void); - -/* Allocate some space on the stack dynamically and return its address. An rtx - says how many bytes. */ -extern rtx allocate_dynamic_stack_space (rtx, rtx, int); - -/* Probe a range of stack addresses from FIRST to FIRST+SIZE, inclusive. - FIRST is a constant and size is a Pmode RTX. These are offsets from the - current stack pointer. STACK_GROWS_DOWNWARD says whether to add or - subtract from the stack. If SIZE is constant, this is done - with a fixed number of probes. Otherwise, we must make a loop. */ -extern void probe_stack_range (HOST_WIDE_INT, rtx); - -/* 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 (enum machine_mode); - -/* 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 (enum extraction_pattern, int); - -extern rtx store_bit_field (rtx, unsigned HOST_WIDE_INT, - /* APPLE LOCAL begin 6020402 */ - unsigned HOST_WIDE_INT, enum machine_mode, rtx, - tree); - /* APPLE LOCAL end 6020402 */ -extern rtx extract_bit_field (rtx, unsigned HOST_WIDE_INT, - unsigned HOST_WIDE_INT, int, rtx, - enum machine_mode, enum machine_mode); -extern rtx expand_mult (enum machine_mode, rtx, rtx, rtx, int); -extern rtx expand_mult_highpart_adjust (enum machine_mode, rtx, rtx, rtx, rtx, int); - -extern rtx assemble_static_space (unsigned HOST_WIDE_INT); -extern int safe_from_p (rtx, tree, int); - -/* Call this once to initialize the contents of the optabs - appropriately for the current target machine. */ -extern void init_optabs (void); -extern void init_all_optabs (void); - -/* Call this to initialize an optab function entry. */ -extern rtx init_one_libfunc (const char *); - -extern int vector_mode_valid_p (enum machine_mode); - -/* APPLE LOCAL begin radar 4441049 */ -extern tree objc_v2_component_ref_field_offset (tree exp); -extern tree objc_v2_bitfield_ivar_bitpos (tree exp); -/* APPLE LOCAL end radar 4441049 */ - -#endif /* GCC_EXPR_H */ |