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| author | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-07-29 19:44:42 +0000 |
|---|---|---|
| committer | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-07-29 19:44:42 +0000 |
| commit | 1805c35c62a9829b19eb9ea84ecdeedd8a46d53e (patch) | |
| tree | 19cc9892c443cb833b456226ee6217fae10f6a91 /gcc/rtl.h | |
| parent | f0fe3b14c6cf97653c99de34ef7dc9cbd32a801b (diff) | |
| download | gcc-1805c35c62a9829b19eb9ea84ecdeedd8a46d53e.tar.gz | |
Suggested by Richard Henderson and Richard Kenner:
* combine.c (recog_for_combine): Use the fake recog
only if instruction does not match.
* rtl.h (NOOP_MOVE_INSN_CODE): New.
* rtlanal.c (noop_move_p): Always return 1 for NOOP_MOVE_INSN_CODE.
* combine.c (try_combine): Discover noop jump as direct jump.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@44464 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/rtl.h')
| -rw-r--r-- | gcc/rtl.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/rtl.h b/gcc/rtl.h index e7fdc98a715..da454c282d6 100644 --- a/gcc/rtl.h +++ b/gcc/rtl.h @@ -35,6 +35,10 @@ struct function; union tree_node; #endif +/* Value used by some passes to "recognize" noop moves as valid instructions. + */ +#define NOOP_MOVE_INSN_CODE INT_MAX + /* Register Transfer Language EXPRESSIONS CODES */ #define RTX_CODE enum rtx_code |