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| author | Jeffrey A Law <law@cygnus.com> | 1999-05-25 13:14:40 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1999-05-25 07:14:40 -0600 |
| commit | 3ce7c5a21da0c2e0d865a9457a8fda2529abb959 (patch) | |
| tree | c856716ededa6050c016dd3bc3dba3d046e5dd6a /gcc | |
| parent | c2c08b29b98521bc05f483fc06e3759b37e6f023 (diff) | |
| download | gcc-3ce7c5a21da0c2e0d865a9457a8fda2529abb959.zip gcc-3ce7c5a21da0c2e0d865a9457a8fda2529abb959.tar.gz gcc-3ce7c5a21da0c2e0d865a9457a8fda2529abb959.tar.bz2 | |
flow.c (mark_set_1): Do not record BLKmode stores as dead store elimination candidates.
�
* flow.c (mark_set_1): Do not record BLKmode stores as dead
store elimination candidates.
From-SVN: r27140
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/flow.c | 3 |
2 files changed, 8 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 6cdd3c4..11ac9b6 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Tue May 25 14:06:06 1999 Jeffrey A Law (law@cygnus.com) + + * flow.c (mark_set_1): Do not record BLKmode stores as dead + store elimination candidates. + Tue May 25 08:55:57 1999 Gavin Romig-Koch <gavin@cygnus.com> * config/mips/mips.h (ASM_OUTPUT_DOUBLE_INT) : Use 'dword' if @@ -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. */ |