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| author | Richard Henderson <rth@cygnus.com> | 1999-12-16 01:55:20 -0800 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1999-12-16 02:55:20 -0700 |
| commit | 27114460d3a2b793de2b99d25138cbcff96ac9df (patch) | |
| tree | b5826f95c7d2b3dd2fe7c79e5a67dd4f528831a7 /gcc | |
| parent | 4cbfbb1bbb819349fccf3d4948445176b24fa586 (diff) | |
| download | gcc-27114460d3a2b793de2b99d25138cbcff96ac9df.zip gcc-27114460d3a2b793de2b99d25138cbcff96ac9df.tar.gz gcc-27114460d3a2b793de2b99d25138cbcff96ac9df.tar.bz2 | |
* loop.c (insert_loop_mem): Ignore memory clobbers.
From-SVN: r30973
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 2 | ||||
| -rw-r--r-- | gcc/loop.c | 4 |
2 files changed, 6 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5f98bda..4c89818 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -6,6 +6,8 @@ Thu Dec 16 10:43:35 MET 1999 Jan Hubicka <hubicka@freesoft.cz> Thu Dec 16 02:41:26 1999 Richard Henderson (rth@cygnus.com) + * loop.c (insert_loop_mem): Ignore memory clobbers. + * combine.c (simplify_comparison): Reduce (OP (MINUS A B) 0) to (OP A B). @@ -9643,6 +9643,10 @@ insert_loop_mem (mem, data) case MEM: break; + case CLOBBER: + /* We're not interested in MEMs that are only clobbered. */ + return -1; + case CONST_DOUBLE: /* We're not interested in the MEM associated with a CONST_DOUBLE, so there's no need to traverse into this. */ |