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| author | Evan Cheng <evan.cheng@apple.com> | 2009-12-03 21:50:58 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2009-12-03 21:50:58 +0000 |
| commit | 8a19371370c636f38915c3d3f8e5394e3514f23b (patch) | |
| tree | 7453153af93b89cc2e9a840d29dc98c394a0e448 /llvm/lib/CodeGen/MachineInstr.cpp | |
| parent | 53bdae3802c758bcc32317adfdb065411e272661 (diff) | |
| download | bcm5719-llvm-8a19371370c636f38915c3d3f8e5394e3514f23b.tar.gz bcm5719-llvm-8a19371370c636f38915c3d3f8e5394e3514f23b.zip | |
Watch out for PHI instruction with no source operands.
llvm-svn: 90488
Diffstat (limited to 'llvm/lib/CodeGen/MachineInstr.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/MachineInstr.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp index ba9be6a8703..2cafbd418f3 100644 --- a/llvm/lib/CodeGen/MachineInstr.cpp +++ b/llvm/lib/CodeGen/MachineInstr.cpp @@ -1064,6 +1064,8 @@ bool MachineInstr::isInvariantLoad(AliasAnalysis *AA) const { unsigned MachineInstr::isConstantValuePHI() const { if (getOpcode() != TargetInstrInfo::PHI) return 0; + if (getNumOperands() <= 1) + return 0; unsigned Reg = getOperand(1).getReg(); for (unsigned i = 3, e = getNumOperands(); i < e; i += 2) |
