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| author | David Majnemer <david.majnemer@gmail.com> | 2015-09-05 20:44:56 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2015-09-05 20:44:56 +0000 |
| commit | daa24b978986f8a31c3bfdf47cc3556caac0917d (patch) | |
| tree | bcd033de1df2f0dc1098b7645e17309011559f2f /llvm/lib/Transforms | |
| parent | 311435dbb6ea8171fb228fb510c46315f54540e5 (diff) | |
| download | bcm5719-llvm-daa24b978986f8a31c3bfdf47cc3556caac0917d.tar.gz bcm5719-llvm-daa24b978986f8a31c3bfdf47cc3556caac0917d.zip | |
[InstCombine] Don't assume m_Mul gives back an Instruction
This fixes PR24713.
llvm-svn: 246933
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp index 6e4336ef875..b3366bb9888 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp @@ -2246,7 +2246,9 @@ static Instruction *ProcessUMulZExtIdiom(ICmpInst &I, Value *MulVal, assert(I.getOperand(0) == MulVal || I.getOperand(1) == MulVal); assert(I.getOperand(0) == OtherVal || I.getOperand(1) == OtherVal); - Instruction *MulInstr = cast<Instruction>(MulVal); + auto *MulInstr = dyn_cast<Instruction>(MulVal); + if (!MulInstr) + return nullptr; assert(MulInstr->getOpcode() == Instruction::Mul); auto *LHS = cast<ZExtOperator>(MulInstr->getOperand(0)), |
