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regmove.c: New implementation of regmove pass.
* regmove.c: New implementation of regmove pass.
* local-alloc.c (optimize_reg_copy_1, optimize_reg_copy_2): Remove
decls, make them have external linkage. Return a value from
optimize_reg_copy_1.
* reload.h (count_occurrences): Add decl.
* reload1.c (count_occurrences): Delete decl, make it have external
linkage.
* rtl.h (optimize_reg_copy_1, optimize_reg_copy_2): Declare.
Co-Authored-By: Jeffrey A Law <law@cygnus.com>
From-SVN: r17316
This commit is contained in:
J"orn Rennecke
Jeff Law
parent
9d1943807a
commit
184bb750da
@ -1,3 +1,15 @@
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Sat Jan 10 21:50:16 1998 J"orn Rennecke <amylaar@cygnus.co.uk>
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Jeffrey A Law (law@cygnus.com)
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* regmove.c: New implementation of regmove pass.
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* local-alloc.c (optimize_reg_copy_1, optimize_reg_copy_2): Remove
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decls, make them have external linkage. Return a value from
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optimize_reg_copy_1.
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* reload.h (count_occurrences): Add decl.
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* reload1.c (count_occurrences): Delete decl, make it have external
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linkage.
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* rtl.h (optimize_reg_copy_1, optimize_reg_copy_2): Declare.
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Sat Jan 10 20:30:12 1998 Jeffrey A Law (law@cygnus.com)
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* regclass.c (record_address_regs): Don't use REG_OK_FOR_BASE_P
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@ -1,5 +1,5 @@
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/* Allocate registers within a basic block, for GNU compiler.
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Copyright (C) 1987, 88, 91, 93-6, 1997 Free Software Foundation, Inc.
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Copyright (C) 1987, 88, 91, 93-97, 1998 Free Software Foundation, Inc.
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This file is part of GNU CC.
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@ -249,8 +249,6 @@ static int validate_equiv_mem PROTO((rtx, rtx, rtx));
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static int contains_replace_regs PROTO((rtx, char *));
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static int memref_referenced_p PROTO((rtx, rtx));
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static int memref_used_between_p PROTO((rtx, rtx, rtx));
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static void optimize_reg_copy_1 PROTO((rtx, rtx, rtx));
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static void optimize_reg_copy_2 PROTO((rtx, rtx, rtx));
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static void update_equiv_regs PROTO((void));
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static void block_alloc PROTO((int));
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static int qty_sugg_compare PROTO((int, int));
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@ -752,7 +750,7 @@ memref_used_between_p (memref, start, end)
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DEST to be tied to SRC, thus often saving one register in addition to a
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register-register copy. */
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static void
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int
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optimize_reg_copy_1 (insn, dest, src)
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rtx insn;
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rtx dest;
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@ -764,15 +762,15 @@ optimize_reg_copy_1 (insn, dest, src)
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int sregno = REGNO (src);
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int dregno = REGNO (dest);
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/* We don't want to mess with hard regs if register classes are small. */
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if (sregno == dregno
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/* We don't want to mess with hard regs if register classes are small. */
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|| (SMALL_REGISTER_CLASSES
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&& (sregno < FIRST_PSEUDO_REGISTER
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|| dregno < FIRST_PSEUDO_REGISTER))
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/* We don't see all updates to SP if they are in an auto-inc memory
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reference, so we must disallow this optimization on them. */
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|| sregno == STACK_POINTER_REGNUM || dregno == STACK_POINTER_REGNUM)
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return;
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return 0;
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for (p = NEXT_INSN (insn); p; p = NEXT_INSN (p))
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{
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@ -864,9 +862,13 @@ optimize_reg_copy_1 (insn, dest, src)
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later. Make sure ALL of DEST dies here; again, this is
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overly conservative. */
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if (dest_death == 0
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&& (dest_death = find_regno_note (q, REG_DEAD, dregno)) != 0
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&& GET_MODE (XEXP (dest_death, 0)) == GET_MODE (dest))
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remove_note (q, dest_death);
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&& (dest_death = find_regno_note (q, REG_DEAD, dregno)) != 0)
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{
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if (GET_MODE (XEXP (dest_death, 0)) != GET_MODE (dest))
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failed = 1, dest_death = 0;
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else
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remove_note (q, dest_death);
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}
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}
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if (! failed)
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@ -876,7 +878,7 @@ optimize_reg_copy_1 (insn, dest, src)
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if (REG_LIVE_LENGTH (sregno) >= 0)
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{
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REG_LIVE_LENGTH (sregno) -= length;
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/* reg_live_length is only an approximation after
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/* REG_LIVE_LENGTH is only an approximation after
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combine if sched is not run, so make sure that we
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still have a reasonable value. */
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if (REG_LIVE_LENGTH (sregno) < 2)
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@ -907,7 +909,7 @@ optimize_reg_copy_1 (insn, dest, src)
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REG_NOTES (p) = dest_death;
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}
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return;
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return ! failed;
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}
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/* If SRC is a hard register which is set or killed in some other
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@ -916,6 +918,7 @@ optimize_reg_copy_1 (insn, dest, src)
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&& dead_or_set_p (p, src))
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break;
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}
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return 0;
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}
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/* INSN is a copy of SRC to DEST, in which SRC dies. See if we now have
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@ -932,7 +935,7 @@ optimize_reg_copy_1 (insn, dest, src)
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It is assumed that DEST and SRC are pseudos; it is too complicated to do
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this for hard registers since the substitutions we may make might fail. */
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static void
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void
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optimize_reg_copy_2 (insn, dest, src)
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rtx insn;
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rtx dest;
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2020
gcc/regmove.c
2020
gcc/regmove.c
File diff suppressed because it is too large
Load Diff
@ -1,5 +1,5 @@
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/* Communication between reload.c and reload1.c.
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Copyright (C) 1987, 91, 92, 93, 94, 95, 1997 Free Software Foundation, Inc.
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Copyright (C) 1987, 91-95, 1997, 1998 Free Software Foundation, Inc.
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This file is part of GNU CC.
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@ -200,9 +200,10 @@ extern rtx find_equiv_reg PROTO((rtx, rtx, enum reg_class, int, short *,
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/* Return 1 if register REGNO is the subject of a clobber in insn INSN. */
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extern int regno_clobbered_p PROTO((int, rtx));
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/* Functions in reload1.c: */
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int count_occurrences PROTO((rtx, rtx));
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/* Initialize the reload pass once per compilation. */
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extern void init_reload PROTO((void));
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@ -1,5 +1,5 @@
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/* Reload pseudo regs into hard regs for insns that require hard regs.
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Copyright (C) 1987, 88, 89, 92-6, 1997 Free Software Foundation, Inc.
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Copyright (C) 1987, 88, 89, 92-7 1998 Free Software Foundation, Inc.
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This file is part of GNU CC.
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@ -392,7 +392,6 @@ static void emit_reload_insns PROTO((rtx));
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static void delete_output_reload PROTO((rtx, int, rtx));
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static void inc_for_reload PROTO((rtx, rtx, int));
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static int constraint_accepts_reg_p PROTO((char *, rtx));
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static int count_occurrences PROTO((rtx, rtx));
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static void reload_cse_invalidate_regno PROTO((int, enum machine_mode, int));
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static int reload_cse_mem_conflict_p PROTO((rtx, rtx));
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static void reload_cse_invalidate_mem PROTO((rtx));
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@ -7510,7 +7509,7 @@ constraint_accepts_reg_p (string, reg)
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/* Return the number of places FIND appears within X, but don't count
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an occurrence if some SET_DEST is FIND. */
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static int
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int
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count_occurrences (x, find)
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register rtx x, find;
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{
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@ -1,5 +1,5 @@
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/* Register Transfer Language (RTL) definitions for GNU C-Compiler
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Copyright (C) 1987, 91-96, 1997 Free Software Foundation, Inc.
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Copyright (C) 1987, 91-97, 1998 Free Software Foundation, Inc.
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This file is part of GNU CC.
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@ -1389,4 +1389,8 @@ extern void init_alias_once PROTO ((void));
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extern void init_alias_analysis PROTO ((void));
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extern void end_alias_analysis PROTO ((void));
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/* In local-alloc.c */
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extern int optimize_reg_copy_1 PROTO((rtx, rtx, rtx));
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extern void optimize_reg_copy_2 PROTO((rtx, rtx, rtx));
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#endif /* _RTL_H */
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