diff options
Diffstat (limited to 'llvm/lib/Transforms/Scalar/IndVarSimplify.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/IndVarSimplify.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp b/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp index 532666ea7c1..7cc34e1ad86 100644 --- a/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp +++ b/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp @@ -936,6 +936,10 @@ bool WidenIV::WidenLoopCompare(NarrowIVDefUse DU) { if (!Cmp) return false; + bool IsSigned = CmpInst::isSigned(Cmp->getPredicate()); + if (!IsSigned) + return false; + Value *Op = Cmp->getOperand(Cmp->getOperand(0) == DU.NarrowDef ? 1 : 0); unsigned CastWidth = SE->getTypeSizeInBits(Op->getType()); unsigned IVWidth = SE->getTypeSizeInBits(WideType); @@ -947,7 +951,6 @@ bool WidenIV::WidenLoopCompare(NarrowIVDefUse DU) { // Widen the other operand of the compare, if necessary. if (CastWidth < IVWidth) { - bool IsSigned = CmpInst::isSigned(Cmp->getPredicate()); Value *ExtOp = getExtend(Op, WideType, IsSigned, Cmp); DU.NarrowUse->replaceUsesOfWith(Op, ExtOp); } |
