[InstCombine] simplify code for FP intrinsic shrinking; NFCI
llvm-svn: 328372
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
index 26ec338..bdd1a58 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
@@ -2070,17 +2070,12 @@
case Intrinsic::rint:
case Intrinsic::trunc: {
Value *ExtSrc;
- if (match(II->getArgOperand(0), m_FPExt(m_Value(ExtSrc))) &&
- II->getArgOperand(0)->hasOneUse()) {
- // fabs (fpext x) -> fpext (fabs x)
- Value *F = Intrinsic::getDeclaration(II->getModule(), II->getIntrinsicID(),
- { ExtSrc->getType() });
- CallInst *NewFabs = Builder.CreateCall(F, ExtSrc);
- NewFabs->copyFastMathFlags(II);
- NewFabs->takeName(II);
- return new FPExtInst(NewFabs, II->getType());
+ if (match(II->getArgOperand(0), m_OneUse(m_FPExt(m_Value(ExtSrc))))) {
+ // Narrow the call: intrinsic (fpext x) -> fpext (intrinsic x)
+ Value *NarrowII = Builder.CreateIntrinsic(II->getIntrinsicID(),
+ { ExtSrc }, II);
+ return new FPExtInst(NarrowII, II->getType());
}
-
break;
}
case Intrinsic::cos: