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| author | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1999-05-25 13:14:40 +0000 |
|---|---|---|
| committer | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1999-05-25 13:14:40 +0000 |
| commit | f6a351a3f4f7f6831fe9919af48c809d19cdb908 (patch) | |
| tree | c856716ededa6050c016dd3bc3dba3d046e5dd6a /gcc/flow.c | |
| parent | fb873f96362d93ce68e319d74d0ba9e162a3c4d8 (diff) | |
| download | gcc-f6a351a3f4f7f6831fe9919af48c809d19cdb908.tar.gz | |
�
* flow.c (mark_set_1): Do not record BLKmode stores as dead
store elimination candidates.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@27140 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/flow.c')
| -rw-r--r-- | gcc/flow.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/flow.c b/gcc/flow.c index b46c87ea46a..a519ea8db8c 100644 --- a/gcc/flow.c +++ b/gcc/flow.c @@ -3258,6 +3258,9 @@ mark_set_1 (needed, dead, x, insn, significant) invalidate_mems_from_autoinc (insn); if (GET_CODE (reg) == MEM && ! side_effects_p (reg) + /* We do not know the size of a BLKmode store, so we do not track + them for redundant store elimination. */ + && GET_MODE (reg) != BLKmode /* There are no REG_INC notes for SP, so we can't assume we'll see everything that invalidates it. To be safe, don't eliminate any stores though SP; none of them should be redundant anyway. */ |