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| author | wilson <wilson@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-10-02 05:00:19 +0000 |
|---|---|---|
| committer | wilson <wilson@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-10-02 05:00:19 +0000 |
| commit | b7fefcbf1f74784d60db9f87ed0ebf75abb2967e (patch) | |
| tree | 742d4d746e3b8b6b4d1c60bd7f08b7f9ce1014c1 | |
| parent | 979b4d09676e02ea28466c7b1c27ad0fe6c7dc40 (diff) | |
| download | ppe42-gcc-b7fefcbf1f74784d60db9f87ed0ebf75abb2967e.tar.gz ppe42-gcc-b7fefcbf1f74784d60db9f87ed0ebf75abb2967e.zip | |
Fix ia64 scheduler/predicated insn bug report from SAP.
* sched-deps.c (add_dependence): When elide conditional dependence,
check that insn doesn't modify cond2.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@45938 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/sched-deps.c | 7 |
2 files changed, 11 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e0581ec4f24..b75dfe63132 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2001-10-01 Jim Wilson <wilson@redhat.com> + + * sched-deps.c (add_dependence): When elide conditional dependence, + check that insn doesn't modify cond2. + 2001-10-01 Dale Johannesen <dalej@apple.com> * config/rs6000/rs6000.h (enum processor_type): Add support diff --git a/gcc/sched-deps.c b/gcc/sched-deps.c index 0142221c5e6..abb02c439ab 100644 --- a/gcc/sched-deps.c +++ b/gcc/sched-deps.c @@ -222,7 +222,12 @@ add_dependence (insn, elem, dep_type) cond2 = get_condition (elem); if (cond1 && cond2 && conditions_mutex_p (cond1, cond2) - && !modified_in_p (cond1, elem)) + /* Make sure first instruction doesn't affect condition of second + instruction if switched. */ + && !modified_in_p (cond1, elem) + /* Make sure second instruction doesn't affect condition of first + instruction if switched. */ + && !modified_in_p (cond2, insn)) return; } |
