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| author | Chris Lattner <sabre@nondot.org> | 2003-05-12 14:26:38 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2003-05-12 14:26:38 +0000 |
| commit | 2e50ac75a0220a77961a709eadef545f4fea9fcc (patch) | |
| tree | 6c8606937d22fa0c554e75826009c8a0a950eb14 /llvm/lib/CodeGen/PHIElimination.cpp | |
| parent | 584bae47337d4c85c611b4496545b636148134d3 (diff) | |
| download | bcm5719-llvm-2e50ac75a0220a77961a709eadef545f4fea9fcc.tar.gz bcm5719-llvm-2e50ac75a0220a77961a709eadef545f4fea9fcc.zip | |
Fix bug where we could iterate off the end of a basic block
llvm-svn: 6116
Diffstat (limited to 'llvm/lib/CodeGen/PHIElimination.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/PHIElimination.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/PHIElimination.cpp b/llvm/lib/CodeGen/PHIElimination.cpp index 33537259fb7..e7f4c9f5411 100644 --- a/llvm/lib/CodeGen/PHIElimination.cpp +++ b/llvm/lib/CodeGen/PHIElimination.cpp @@ -76,8 +76,9 @@ bool PNE::EliminatePHINodes(MachineFunction &MF, MachineBasicBlock &MBB) { // into the phi node destination. // MachineBasicBlock::iterator AfterPHIsIt = MBB.begin(); - if (AfterPHIsIt != MBB.end()) - while ((*AfterPHIsIt)->getOpcode() == TargetInstrInfo::PHI) ++AfterPHIsIt; + while (AfterPHIsIt != MBB.end() && + (*AfterPHIsIt)->getOpcode() == TargetInstrInfo::PHI) + ++AfterPHIsIt; // Skip over all of the PHI nodes... RegInfo->copyRegToReg(MBB, AfterPHIsIt, DestReg, IncomingReg, RC); // Update live variable information if there is any... |
