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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 | 9aed9396a672f50541dc77a4662bb882a0fb1080 (patch) | |
| tree | 592062cb1dbc25a3c477efaf9d0e1bedc34ae86d /lib/CodeGen/MachineInstr.cpp | |
| parent | 4a8ee23a8181f668dc294b417f67e1675ad391ab (diff) | |
Watch out for PHI instruction with no source operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90488 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/MachineInstr.cpp')
| -rw-r--r-- | lib/CodeGen/MachineInstr.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp index ba9be6a870..2cafbd418f 100644 --- a/lib/CodeGen/MachineInstr.cpp +++ b/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) |