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Have RemovePredecessorAndSimplify you SimplifyInstruction
rather than hasConstantValue. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119457 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -346,13 +346,13 @@ void llvm::RemovePredecessorAndSimplify(BasicBlock *BB, BasicBlock *Pred,
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WeakVH PhiIt = &BB->front();
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WeakVH PhiIt = &BB->front();
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while (PHINode *PN = dyn_cast<PHINode>(PhiIt)) {
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while (PHINode *PN = dyn_cast<PHINode>(PhiIt)) {
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PhiIt = &*++BasicBlock::iterator(cast<Instruction>(PhiIt));
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PhiIt = &*++BasicBlock::iterator(cast<Instruction>(PhiIt));
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Value *PNV = PN->hasConstantValue();
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Value *PNV = SimplifyInstruction(PN, TD);
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if (PNV == 0) continue;
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if (PNV == 0) continue;
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// If we're able to simplify the phi to a single value, substitute the new
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// If we're able to simplify the phi to a single value, substitute the new
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// value into all of its uses.
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// value into all of its uses.
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assert(PNV != PN && "hasConstantValue broken");
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assert(PNV != PN && "SimplifyInstruction broken!");
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Value *OldPhiIt = PhiIt;
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Value *OldPhiIt = PhiIt;
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ReplaceAndSimplifyAllUses(PN, PNV, TD);
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ReplaceAndSimplifyAllUses(PN, PNV, TD);
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