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| author | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-01-28 14:13:35 +0000 |
|---|---|---|
| committer | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-01-28 14:13:35 +0000 |
| commit | 433e77e84de62fe3d5727c645fcc4d440ab6f8a5 (patch) | |
| tree | 7bd03b1e8d0b5de0cd5fbe0b566210a2be8be1fa | |
| parent | 878726295bfb2d4c3eb4738b97b549efa872698e (diff) | |
| download | ppe42-gcc-433e77e84de62fe3d5727c645fcc4d440ab6f8a5.tar.gz ppe42-gcc-433e77e84de62fe3d5727c645fcc4d440ab6f8a5.zip | |
* gcse.c (bypass_block): Prevent edges to be unified when we are
about to emit compenstation code.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@76791 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/gcse.c | 15 |
2 files changed, 20 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 01dea5c5719..b29c3f3cd77 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2004-01-28 Jan Hubicka <jh@suse.cz> + + * gcse.c (bypass_block): Prevent edges to be unified when we are + about to emit compenstation code. + 2004-01-28 Nick Clifton <nickc@redhat.com> * config/arm/arm.c (arm_expand_builtin): Force second argument of diff --git a/gcc/gcse.c b/gcc/gcse.c index 509d465b406..c2d7d5fb841 100644 --- a/gcc/gcse.c +++ b/gcc/gcse.c @@ -4874,6 +4874,21 @@ bypass_block (basic_block bb, rtx setcc, rtx jump) else dest = NULL; + /* Avoid unification of the edge with other edges from original + branch. We would end up emitting the instruction on "both" + edges. */ + + if (dest && setcc && !CC0_P (SET_DEST (pat))) + { + edge e2; + for (e2 = e->src->succ; e2; e2 = e2->succ_next) + if (e2->dest == dest) + { + dest = NULL; + break; + } + } + old_dest = e->dest; if (dest != NULL && dest != old_dest |
