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diff --git a/gcc-4.2.1-5666.3/gcc/reload.h b/gcc-4.2.1-5666.3/gcc/reload.h
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-/* Communication between reload.c and reload1.c.
- Copyright (C) 1987, 1991, 1992, 1993, 1994, 1995, 1997, 1998,
- 1999, 2000, 2001, 2003, 2004 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. */
-
-
-/* If secondary reloads are the same for inputs and outputs, define those
- macros here. */
-
-#ifdef SECONDARY_RELOAD_CLASS
-#define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) \
- SECONDARY_RELOAD_CLASS (CLASS, MODE, X)
-#define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, X) \
- SECONDARY_RELOAD_CLASS (CLASS, MODE, X)
-#endif
-
-/* If MEMORY_MOVE_COST isn't defined, give it a default here. */
-#ifndef MEMORY_MOVE_COST
-#define MEMORY_MOVE_COST(MODE,CLASS,IN) \
- (4 + memory_move_secondary_cost ((MODE), (CLASS), (IN)))
-#endif
-extern int memory_move_secondary_cost (enum machine_mode, enum reg_class, int);
-
-/* Maximum number of reloads we can need. */
-#define MAX_RELOADS (2 * MAX_RECOG_OPERANDS * (MAX_REGS_PER_ADDRESS + 1))
-
-/* Encode the usage of a reload. The following codes are supported:
-
- RELOAD_FOR_INPUT reload of an input operand
- RELOAD_FOR_OUTPUT likewise, for output
- RELOAD_FOR_INSN a reload that must not conflict with anything
- used in the insn, but may conflict with
- something used before or after the insn
- RELOAD_FOR_INPUT_ADDRESS reload for parts of the address of an object
- that is an input reload
- RELOAD_FOR_INPADDR_ADDRESS reload needed for RELOAD_FOR_INPUT_ADDRESS
- RELOAD_FOR_OUTPUT_ADDRESS like RELOAD_FOR INPUT_ADDRESS, for output
- RELOAD_FOR_OUTADDR_ADDRESS reload needed for RELOAD_FOR_OUTPUT_ADDRESS
- RELOAD_FOR_OPERAND_ADDRESS reload for the address of a non-reloaded
- operand; these don't conflict with
- any other addresses.
- RELOAD_FOR_OPADDR_ADDR reload needed for RELOAD_FOR_OPERAND_ADDRESS
- reloads; usually secondary reloads
- RELOAD_OTHER none of the above, usually multiple uses
- RELOAD_FOR_OTHER_ADDRESS reload for part of the address of an input
- that is marked RELOAD_OTHER.
-
- This used to be "enum reload_when_needed" but some debuggers have trouble
- with an enum tag and variable of the same name. */
-
-enum reload_type
-{
- RELOAD_FOR_INPUT, RELOAD_FOR_OUTPUT, RELOAD_FOR_INSN,
- RELOAD_FOR_INPUT_ADDRESS, RELOAD_FOR_INPADDR_ADDRESS,
- RELOAD_FOR_OUTPUT_ADDRESS, RELOAD_FOR_OUTADDR_ADDRESS,
- RELOAD_FOR_OPERAND_ADDRESS, RELOAD_FOR_OPADDR_ADDR,
- RELOAD_OTHER, RELOAD_FOR_OTHER_ADDRESS
-};
-
-#ifdef GCC_INSN_CODES_H
-/* Each reload is recorded with a structure like this. */
-struct reload
-{
- /* The value to reload from */
- rtx in;
- /* Where to store reload-reg afterward if nec (often the same as
- reload_in) */
- rtx out;
-
- /* The class of registers to reload into. */
- enum reg_class class;
-
- /* The mode this operand should have when reloaded, on input. */
- enum machine_mode inmode;
- /* The mode this operand should have when reloaded, on output. */
- enum machine_mode outmode;
-
- /* The mode of the reload register. */
- enum machine_mode mode;
-
- /* the largest number of registers this reload will require. */
- unsigned int nregs;
-
- /* Positive amount to increment or decrement by if
- reload_in is a PRE_DEC, PRE_INC, POST_DEC, POST_INC.
- Ignored otherwise (don't assume it is zero). */
- int inc;
- /* A reg for which reload_in is the equivalent.
- If reload_in is a symbol_ref which came from
- reg_equiv_constant, then this is the pseudo
- which has that symbol_ref as equivalent. */
- rtx in_reg;
- rtx out_reg;
-
- /* Used in find_reload_regs to record the allocated register. */
- int regno;
- /* This is the register to reload into. If it is zero when `find_reloads'
- returns, you must find a suitable register in the class specified by
- reload_reg_class, and store here an rtx for that register with mode from
- reload_inmode or reload_outmode. */
- rtx reg_rtx;
- /* The operand number being reloaded. This is used to group related reloads
- and need not always be equal to the actual operand number in the insn,
- though it current will be; for in-out operands, it is one of the two
- operand numbers. */
- int opnum;
-
- /* Gives the reload number of a secondary input reload, when needed;
- otherwise -1. */
- int secondary_in_reload;
- /* Gives the reload number of a secondary output reload, when needed;
- otherwise -1. */
- int secondary_out_reload;
- /* If a secondary input reload is required, gives the INSN_CODE that uses the
- secondary reload as a scratch register, or CODE_FOR_nothing if the
- secondary reload register is to be an intermediate register. */
- enum insn_code secondary_in_icode;
- /* Likewise, for a secondary output reload. */
- enum insn_code secondary_out_icode;
-
- /* Classifies reload as needed either for addressing an input reload,
- addressing an output, for addressing a non-reloaded mem ref, or for
- unspecified purposes (i.e., more than one of the above). */
- enum reload_type when_needed;
-
- /* Nonzero for an optional reload. Optional reloads are ignored unless the
- value is already sitting in a register. */
- unsigned int optional:1;
- /* nonzero if this reload shouldn't be combined with another reload. */
- unsigned int nocombine:1;
- /* Nonzero if this is a secondary register for one or more reloads. */
- unsigned int secondary_p:1;
- /* Nonzero if this reload must use a register not already allocated to a
- group. */
- unsigned int nongroup:1;
-};
-
-extern struct reload rld[MAX_RELOADS];
-extern int n_reloads;
-#endif
-
-extern GTY (()) VEC(rtx,gc) *reg_equiv_memory_loc_vec;
-extern rtx *reg_equiv_constant;
-extern rtx *reg_equiv_invariant;
-extern rtx *reg_equiv_memory_loc;
-extern rtx *reg_equiv_address;
-extern rtx *reg_equiv_mem;
-extern rtx *reg_equiv_alt_mem_list;
-
-/* Element N is the list of insns that initialized reg N from its equivalent
- constant or memory slot. */
-extern GTY((length("reg_equiv_init_size"))) rtx *reg_equiv_init;
-
-/* The size of the previous array, for GC purposes. */
-extern GTY(()) int reg_equiv_init_size;
-
-/* All the "earlyclobber" operands of the current insn
- are recorded here. */
-extern int n_earlyclobbers;
-extern rtx reload_earlyclobbers[MAX_RECOG_OPERANDS];
-
-/* Save the number of operands. */
-extern int reload_n_operands;
-
-/* First uid used by insns created by reload in this function.
- Used in find_equiv_reg. */
-extern int reload_first_uid;
-
-/* Nonzero if indirect addressing is supported when the innermost MEM is
- of the form (MEM (SYMBOL_REF sym)). It is assumed that the level to
- which these are valid is the same as spill_indirect_levels, above. */
-
-extern char indirect_symref_ok;
-
-/* Nonzero if an address (plus (reg frame_pointer) (reg ...)) is valid. */
-extern char double_reg_address_ok;
-
-extern int num_not_at_initial_offset;
-
-#if defined SET_HARD_REG_BIT && defined CLEAR_REG_SET
-/* This structure describes instructions which are relevant for reload.
- Apart from all regular insns, this also includes CODE_LABELs, since they
- must be examined for register elimination. */
-struct insn_chain
-{
- /* Links to the neighbor instructions. */
- struct insn_chain *next, *prev;
-
- /* Link through a chains set up by calculate_needs_all_insns, containing
- all insns that need reloading. */
- struct insn_chain *next_need_reload;
-
- /* The basic block this insn is in. */
- int block;
- /* The rtx of the insn. */
- rtx insn;
- /* Register life information: record all live hard registers, and all
- live pseudos that have a hard register. */
- regset_head live_throughout;
- regset_head dead_or_set;
-
- /* Copies of the global variables computed by find_reloads. */
- struct reload *rld;
- int n_reloads;
-
- /* Indicates which registers have already been used for spills. */
- HARD_REG_SET used_spill_regs;
-
- /* Nonzero if find_reloads said the insn requires reloading. */
- unsigned int need_reload:1;
- /* Nonzero if find_reloads needs to be run during reload_as_needed to
- perform modifications on any operands. */
- unsigned int need_operand_change:1;
- /* Nonzero if eliminate_regs_in_insn said it requires eliminations. */
- unsigned int need_elim:1;
- /* Nonzero if this insn was inserted by perform_caller_saves. */
- unsigned int is_caller_save_insn:1;
-};
-
-/* A chain of insn_chain structures to describe all non-note insns in
- a function. */
-extern struct insn_chain *reload_insn_chain;
-
-/* Allocate a new insn_chain structure. */
-extern struct insn_chain *new_insn_chain (void);
-
-extern void compute_use_by_pseudos (HARD_REG_SET *, regset);
-#endif
-
-/* Functions from reload.c: */
-
-extern enum reg_class secondary_reload_class (bool, enum reg_class,
- enum machine_mode, rtx);
-
-#ifdef GCC_INSN_CODES_H
-extern enum reg_class scratch_reload_class (enum insn_code);
-#endif
-
-/* Return a memory location that will be used to copy X in mode MODE.
- If we haven't already made a location for this mode in this insn,
- call find_reloads_address on the location being returned. */
-extern rtx get_secondary_mem (rtx, enum machine_mode, int, enum reload_type);
-
-/* Clear any secondary memory locations we've made. */
-extern void clear_secondary_mem (void);
-
-/* Transfer all replacements that used to be in reload FROM to be in
- reload TO. */
-extern void transfer_replacements (int, int);
-
-/* IN_RTX is the value loaded by a reload that we now decided to inherit,
- or a subpart of it. If we have any replacements registered for IN_RTX,
- cancel the reloads that were supposed to load them.
- Return nonzero if we canceled any reloads. */
-extern int remove_address_replacements (rtx in_rtx);
-
-/* Like rtx_equal_p except that it allows a REG and a SUBREG to match
- if they are the same hard reg, and has special hacks for
- autoincrement and autodecrement. */
-extern int operands_match_p (rtx, rtx);
-
-/* Return 1 if altering OP will not modify the value of CLOBBER. */
-extern int safe_from_earlyclobber (rtx, rtx);
-
-/* Search the body of INSN for values that need reloading and record them
- with push_reload. REPLACE nonzero means record also where the values occur
- so that subst_reloads can be used. */
-extern int find_reloads (rtx, int, int, int, short *);
-
-/* Compute the sum of X and Y, making canonicalizations assumed in an
- address, namely: sum constant integers, surround the sum of two
- constants with a CONST, put the constant as the second operand, and
- group the constant on the outermost sum. */
-extern rtx form_sum (rtx, rtx);
-
-/* Substitute into the current INSN the registers into which we have reloaded
- the things that need reloading. */
-extern void subst_reloads (rtx);
-
-/* Make a copy of any replacements being done into X and move those copies
- to locations in Y, a copy of X. We only look at the highest level of
- the RTL. */
-extern void copy_replacements (rtx, rtx);
-
-/* Change any replacements being done to *X to be done to *Y */
-extern void move_replacements (rtx *x, rtx *y);
-
-/* If LOC was scheduled to be replaced by something, return the replacement.
- Otherwise, return *LOC. */
-extern rtx find_replacement (rtx *);
-
-/* Nonzero if modifying X will affect IN. */
-extern int reg_overlap_mentioned_for_reload_p (rtx, rtx);
-
-/* Check the insns before INSN to see if there is a suitable register
- containing the same value as GOAL. */
-extern rtx find_equiv_reg (rtx, rtx, enum reg_class, int, short *,
- int, enum machine_mode);
-
-/* Return 1 if register REGNO is the subject of a clobber in insn INSN. */
-extern int regno_clobbered_p (unsigned int, rtx, enum machine_mode, int);
-
-/* Return 1 if X is an operand of an insn that is being earlyclobbered. */
-extern int earlyclobber_operand_p (rtx);
-
-/* Record one reload that needs to be performed. */
-extern int push_reload (rtx, rtx, rtx *, rtx *, enum reg_class,
- enum machine_mode, enum machine_mode,
- int, int, int, enum reload_type);
-
-/* Functions in postreload.c: */
-extern void reload_cse_regs (rtx);
-
-/* Functions in reload1.c: */
-
-/* Initialize the reload pass once per compilation. */
-extern void init_reload (void);
-
-/* The reload pass itself. */
-extern int reload (rtx, int);
-
-/* Mark the slots in regs_ever_live for the hard regs
- used by pseudo-reg number REGNO. */
-extern void mark_home_live (int);
-
-/* Scan X and replace any eliminable registers (such as fp) with a
- replacement (such as sp), plus an offset. */
-extern rtx eliminate_regs (rtx, enum machine_mode, rtx);
-
-/* Deallocate the reload register used by reload number R. */
-extern void deallocate_reload_reg (int r);
-
-/* Functions in caller-save.c: */
-
-/* Initialize for caller-save. */
-extern void init_caller_save (void);
-
-/* Initialize save areas by showing that we haven't allocated any yet. */
-extern void init_save_areas (void);
-
-/* Allocate save areas for any hard registers that might need saving. */
-extern void setup_save_areas (void);
-
-/* Find the places where hard regs are live across calls and save them. */
-extern void save_call_clobbered_regs (void);
-
-/* Replace (subreg (reg)) with the appropriate (reg) for any operands. */
-extern void cleanup_subreg_operands (rtx);
-
-/* Debugging support. */
-extern void debug_reload_to_stream (FILE *);
-extern void debug_reload (void);
-
-/* Compute the actual register we should reload to, in case we're
- reloading to/from a register that is wider than a word. */
-extern rtx reload_adjust_reg_for_mode (rtx, enum machine_mode);