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| author | Will Dietz <wdietz2@illinois.edu> | 2013-10-13 03:08:49 +0000 |
|---|---|---|
| committer | Will Dietz <wdietz2@illinois.edu> | 2013-10-13 03:08:49 +0000 |
| commit | ae726a93e31e2c16ce78cba296469d0c288f21d5 (patch) | |
| tree | c0d0de1a7244e842d72ea7b931f55b8bd7d83061 /llvm/lib/CodeGen/SelectionDAG | |
| parent | 9f21325ac732ab6f0b57dbad7f2099b0679156cf (diff) | |
| download | bcm5719-llvm-ae726a93e31e2c16ce78cba296469d0c288f21d5.tar.gz bcm5719-llvm-ae726a93e31e2c16ce78cba296469d0c288f21d5.zip | |
TargetLowering: Don't index into empty string.
(This is triggered by current lit tests)
llvm-svn: 192549
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp index 05b025c1482..17631c0c9d9 100644 --- a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp @@ -2012,7 +2012,7 @@ void TargetLowering::LowerAsmOperandForConstraint(SDValue Op, std::pair<unsigned, const TargetRegisterClass*> TargetLowering:: getRegForInlineAsmConstraint(const std::string &Constraint, MVT VT) const { - if (Constraint[0] != '{') + if (Constraint.empty() || Constraint[0] != '{') return std::make_pair(0u, static_cast<TargetRegisterClass*>(0)); assert(*(Constraint.end()-1) == '}' && "Not a brace enclosed constraint?"); |
