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Avoid a redundant call. 

llvm-svn: 53040
This commit is contained in:
Owen Anderson 2008-07-02 18:15:31 +00:00
parent bdbe6130f4
commit 6acc782dad
1 changed files with 4 additions and 4 deletions
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8
llvm/lib/Transforms/Scalar/GVN.cpp
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@ -808,10 +808,10 @@ Value *GVN::GetValueForBlock(BasicBlock *BB, LoadInst* orig,
DenseMap<BasicBlock*, Value*>::iterator V = Phis.find(BB);
if (V != Phis.end() && !top_level) return V->second;
if (!getAnalysis<DominatorTree>().isReachableFromEntry(BB)) {
Phis[BB] = UndefValue::get(orig->getType());
return UndefValue::get(orig->getType());
}
// If the block is unreachable, just return undef, since this path
// can't actually occur at runtime.
if (!getAnalysis<DominatorTree>().isReachableFromEntry(BB))
return Phis[BB] = UndefValue::get(orig->getType());
BasicBlock* singlePred = BB->getSinglePredecessor();
if (singlePred) {