Fix an error where ANTIC_OUT was ending up with more than one expression of

the same value number.  This fixes an infinite loop on 444.namd.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37967 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson
2007-07-07 20:13:57 +00:00
parent 8f5149e002
commit 36a07daabd
2 changed files with 15 additions and 1 deletions

View File

@@ -1370,7 +1370,7 @@ unsigned GVNPRE::buildsets_anticin(BasicBlock* BB,
unsigned num = VN.lookup_or_add(*I);
numbers.resize(VN.size());
if (isa<Instruction>(*I)) {
if (isa<Instruction>(*I) && !numbers.test(num)) {
anticIn.insert(*I);
numbers.set(num);
}