Fix a bug in InstCombine where it attempted to cast a Value* to an Instruction*
when it was actually a Constant*.
There are quite a few other casts to Instruction that might have the same problem,
but this is the only one I have a test case for.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191668 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp b/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
index 9c310f0..5c5ee12 100644
--- a/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
+++ b/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
@@ -519,10 +519,10 @@
if (Opnd0->hasOneUse()) {
// -X * Y => -(X*Y) (Promote negation as high as possible)
Value *T = Builder->CreateFMul(N0, Opnd1);
- cast<Instruction>(T)->setDebugLoc(I.getDebugLoc());
Instruction *Neg = BinaryOperator::CreateFNeg(T);
if (I.getFastMathFlags().any()) {
- cast<Instruction>(T)->copyFastMathFlags(&I);
+ if (Instruction *TI = dyn_cast<Instruction>(T))
+ TI->copyFastMathFlags(&I);
Neg->copyFastMathFlags(&I);
}
return Neg;