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Make val_replace fail early, which reduces the time to optimize 403.gcc to 14.8s.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40064 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2007-07-19 19:57:13 +00:00
parent 3b1c0994a0
commit b83e56f6b6
1 changed files with 2 additions and 0 deletions
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2
lib/Transforms/Scalar/GVNPRE.cpp
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@ -757,6 +757,8 @@ void GVNPRE::val_insert(ValueNumberedSet& s, Value* v) {
/// val_replace - Insert a value into a set, replacing any values already in
/// the set that have the same value number
void GVNPRE::val_replace(ValueNumberedSet& s, Value* v) {
if (s.count(v)) return;
uint32_t num = VN.lookup(v);
Value* leader = find_leader(s, num);
if (leader != 0)