diff options
Diffstat (limited to 'llvm/lib/Transforms/InstCombine')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp index c1c904b331a..2ff10f4fc40 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp @@ -5483,11 +5483,13 @@ Instruction *InstCombiner::visitFCmpInst(FCmpInst &I) { } } - // fcmp (fpext x), (fpext y) -> fcmp x, y - if (FPExtInst *LHSExt = dyn_cast<FPExtInst>(Op0)) - if (FPExtInst *RHSExt = dyn_cast<FPExtInst>(Op1)) - if (LHSExt->getSrcTy() == RHSExt->getSrcTy()) - return new FCmpInst(Pred, LHSExt->getOperand(0), RHSExt->getOperand(0)); + // fcmp (fpext X), (fpext Y) -> fcmp X, Y + if (match(Op0, m_FPExt(m_Value(X))) && match(Op1, m_FPExt(m_Value(Y))) && + X->getType() == Y->getType()) { + Instruction *NewFCmp = new FCmpInst(Pred, X, Y); + NewFCmp->copyFastMathFlags(&I); + return NewFCmp; + } if (I.getType()->isVectorTy()) if (Instruction *Res = foldVectorCmp(I, Builder)) |
