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It is illegal for PHI nodes to have zero values, delete the code to handle them 

llvm-svn: 4071
This commit is contained in:
Chris Lattner 2002-10-08 17:07:39 +00:00
parent 2e0fb39d87
commit 394617f38b
1 changed files with 0 additions and 2 deletions
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2
llvm/lib/Transforms/Scalar/InstructionCombining.cpp
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@ -630,8 +630,6 @@ Instruction *InstCombiner::visitCastInst(CastInst &CI) {
// //
Instruction *InstCombiner::visitPHINode(PHINode &PN) { Instruction *InstCombiner::visitPHINode(PHINode &PN) {
// If the PHI node only has one incoming value, eliminate the PHI node... // If the PHI node only has one incoming value, eliminate the PHI node...
if (PN.getNumIncomingValues() == 0)
return ReplaceInstUsesWith(PN, Constant::getNullValue(PN.getType()));
if (PN.getNumIncomingValues() == 1) if (PN.getNumIncomingValues() == 1)
return ReplaceInstUsesWith(PN, PN.getIncomingValue(0)); return ReplaceInstUsesWith(PN, PN.getIncomingValue(0));