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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 | a13f0d3f4159b1f54bcfc733ccd94977b020ea56 (patch) | |
| tree | 43dd8cb451b3079fdf66a620f8f02d9ae9c25759 /lib | |
| parent | fb2cb69dc55c1e1d7754186cd1c8a9d543f54bdd (diff) | |
| download | external_llvm-a13f0d3f4159b1f54bcfc733ccd94977b020ea56.zip external_llvm-a13f0d3f4159b1f54bcfc733ccd94977b020ea56.tar.gz external_llvm-a13f0d3f4159b1f54bcfc733ccd94977b020ea56.tar.bz2 | |
Fix bug where we could iterate off the end of a basic block
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6116 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/CodeGen/PHIElimination.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/CodeGen/PHIElimination.cpp b/lib/CodeGen/PHIElimination.cpp index 3353725..e7f4c9f 100644 --- a/lib/CodeGen/PHIElimination.cpp +++ b/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... |