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| author | Richard Sandiford <richard@codesourcery.com> | 2007-04-27 11:39:47 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2007-04-27 11:39:47 +0000 |
| commit | 8c74fb06c66b569a26f93c0d569d4437fdcfd415 (patch) | |
| tree | a4840b670d6361a1ddbbb4b10ca1921ee3bb7e7c /gcc/reload.c | |
| parent | a9b77cd1f72118dead00c720f1fc3348b7c5127e (diff) | |
| download | gcc-8c74fb06c66b569a26f93c0d569d4437fdcfd415.zip gcc-8c74fb06c66b569a26f93c0d569d4437fdcfd415.tar.gz gcc-8c74fb06c66b569a26f93c0d569d4437fdcfd415.tar.bz2 | |
reload.h (elimination_target_reg_p): Declare.
gcc/
* reload.h (elimination_target_reg_p): Declare.
* reload.c (find_reloads): Don't apply the reg_rtx move
optimization if the SET_DEST satisfies elimination_target_reg_p.
* reload1.c (elimination_target_reg_p): New function.
(gen_reload): In the move/add2 fallback, make sure that op0
does not overlap the destination register.
From-SVN: r124215
Diffstat (limited to 'gcc/reload.c')
| -rw-r--r-- | gcc/reload.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/reload.c b/gcc/reload.c index de6093b..8ed2f4b 100644 --- a/gcc/reload.c +++ b/gcc/reload.c @@ -4465,7 +4465,8 @@ find_reloads (rtx insn, int replace, int ind_levels, int live_known, if (rld[i].when_needed == RELOAD_FOR_INPUT && GET_CODE (PATTERN (insn)) == SET && REG_P (SET_DEST (PATTERN (insn))) - && SET_SRC (PATTERN (insn)) == rld[i].in) + && SET_SRC (PATTERN (insn)) == rld[i].in + && !elimination_target_reg_p (SET_DEST (PATTERN (insn)))) { rtx dest = SET_DEST (PATTERN (insn)); unsigned int regno = REGNO (dest); |