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Diffstat (limited to 'gcc/reload.h')
| -rw-r--r-- | gcc/reload.h | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/gcc/reload.h b/gcc/reload.h deleted file mode 100644 index 98c6dd415a4..00000000000 --- a/gcc/reload.h +++ /dev/null @@ -1,242 +0,0 @@ -/* Communication between reload.c and reload1.c. - Copyright (C) 1987, 91, 92, 93, 94, 95, 1997 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, 59 Temple Place - Suite 330, -Boston, MA 02111-1307, 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 either macro is defined, show that we need secondary reloads. */ -#if defined(SECONDARY_INPUT_RELOAD_CLASS) || defined(SECONDARY_OUTPUT_RELOAD_CLASS) -#define HAVE_SECONDARY_RELOADS -#endif - -/* See reload.c and reload1.c for comments on these variables. */ - -/* Maximum number of reloads we can need. */ -#define MAX_RELOADS (2 * MAX_RECOG_OPERANDS * (MAX_REGS_PER_ADDRESS + 1)) - -extern enum reg_class reload_address_base_reg_class; -extern enum reg_class reload_address_index_reg_class; -extern rtx reload_in[MAX_RELOADS]; -extern rtx reload_out[MAX_RELOADS]; -extern rtx reload_in_reg[MAX_RELOADS]; -extern enum reg_class reload_reg_class[MAX_RELOADS]; -extern enum machine_mode reload_inmode[MAX_RELOADS]; -extern enum machine_mode reload_outmode[MAX_RELOADS]; -extern char reload_optional[MAX_RELOADS]; -extern int reload_inc[MAX_RELOADS]; -extern int reload_opnum[MAX_RELOADS]; -extern int reload_secondary_p[MAX_RELOADS]; -extern int reload_secondary_in_reload[MAX_RELOADS]; -extern int reload_secondary_out_reload[MAX_RELOADS]; -#ifdef MAX_INSN_CODE -extern enum insn_code reload_secondary_in_icode[MAX_RELOADS]; -extern enum insn_code reload_secondary_out_icode[MAX_RELOADS]; -#endif -extern int n_reloads; - -extern rtx reload_reg_rtx[MAX_RELOADS]; - -/* 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 -}; - -extern enum reload_type reload_when_needed[MAX_RELOADS]; - -extern rtx *reg_equiv_constant; -extern rtx *reg_equiv_memory_loc; -extern rtx *reg_equiv_address; -extern rtx *reg_equiv_mem; - -/* 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; - -#ifdef MAX_INSN_CODE -/* These arrays record the insn_code of insns that may be needed to - perform input and output reloads of special objects. They provide a - place to pass a scratch register. */ -extern enum insn_code reload_in_optab[]; -extern enum insn_code reload_out_optab[]; -#endif - -/* Functions from reload.c: */ - -/* 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 PROTO((rtx, enum machine_mode, - int, enum reload_type)); - -/* Clear any secondary memory locations we've made. */ -extern void clear_secondary_mem PROTO((void)); - -/* Transfer all replacements that used to be in reload FROM to be in - reload TO. */ -extern void transfer_replacements PROTO((int, int)); - -/* Return 1 if ADDR is a valid memory address for mode MODE, - and check that each pseudo reg has the proper kind of - hard reg. */ -extern int strict_memory_address_p PROTO((enum machine_mode, 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 PROTO((rtx, rtx)); - -/* Return the number of times character C occurs in string S. */ -extern int n_occurrences PROTO((int, char *)); - -/* Return 1 if altering OP will not modify the value of CLOBBER. */ -extern int safe_from_earlyclobber PROTO((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 void find_reloads PROTO((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 PROTO((rtx, rtx)); - -/* Substitute into the current INSN the registers into which we have reloaded - the things that need reloading. */ -extern void subst_reloads PROTO((void)); - -/* 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 PROTO((rtx, rtx)); - -/* If LOC was scheduled to be replaced by something, return the replacement. - Otherwise, return *LOC. */ -extern rtx find_replacement PROTO((rtx *)); - -/* Return nonzero if register in range [REGNO, ENDREGNO) - appears either explicitly or implicitly in X - other than being stored into. */ -extern int refers_to_regno_for_reload_p PROTO((int, int, rtx, rtx *)); - -/* Nonzero if modifying X will affect IN. */ -extern int reg_overlap_mentioned_for_reload_p PROTO((rtx, rtx)); - -/* Return nonzero if anything in X contains a MEM. Look also for pseudo - registers. */ -extern int refers_to_mem_for_reload_p PROTO((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 PROTO((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 PROTO((int, rtx)); - - -/* Functions in reload1.c: */ - -/* Initialize the reload pass once per compilation. */ -extern void init_reload PROTO((void)); - -/* The reload pass itself. */ -extern int reload STDIO_PROTO((rtx, int, FILE *)); - -/* Mark the slots in regs_ever_live for the hard regs - used by pseudo-reg number REGNO. */ -extern void mark_home_live PROTO((int)); - -/* Scan X and replace any eliminable registers (such as fp) with a - replacement (such as sp), plus an offset. */ -extern rtx eliminate_regs PROTO((rtx, enum machine_mode, rtx, int)); - -/* Emit code to perform a reload from IN (which may be a reload register) to - OUT (which may also be a reload register). IN or OUT is from operand - OPNUM with reload type TYPE. */ -extern rtx gen_reload PROTO((rtx, rtx, int, enum reload_type)); - -/* Functions in caller-save.c: */ - -/* Initialize for caller-save. */ -extern void init_caller_save PROTO((void)); - -/* Initialize save areas by showing that we haven't allocated any yet. */ -extern void init_save_areas PROTO((void)); - -/* Allocate save areas for any hard registers that might need saving. */ -extern int setup_save_areas PROTO((int *)); - -/* Find the places where hard regs are live across calls and save them. */ -extern void save_call_clobbered_regs PROTO((enum machine_mode)); |