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[InstCombine] cleanup; NFC

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llvm-svn: 329282
This commit is contained in:
Sanjay Patel 2018-04-05 13:24:26 +00:00
parent ae3b946d06
commit d83d832759
1 changed files with 12 additions and 15 deletions
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27
lib/Transforms/InstCombine/InstCombineCalls.cpp
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@ -2016,37 +2016,34 @@ Instruction *InstCombiner::visitCallInst(CallInst &CI) {
Value *Src0 = II->getArgOperand(0);
Value *Src1 = II->getArgOperand(1);
// Canonicalize constants into the RHS.
// Canonicalize constant multiply operand to Src1.
if (isa<Constant>(Src0) && !isa<Constant>(Src1)) {
II->setArgOperand(0, Src1);
II->setArgOperand(1, Src0);
std::swap(Src0, Src1);
}
Value *LHS = nullptr;
Value *RHS = nullptr;
// fma fneg(x), fneg(y), z -> fma x, y, z
if (match(Src0, m_FNeg(m_Value(LHS))) &&
match(Src1, m_FNeg(m_Value(RHS)))) {
II->setArgOperand(0, LHS);
II->setArgOperand(1, RHS);
Value *X, *Y;
if (match(Src0, m_FNeg(m_Value(X))) && match(Src1, m_FNeg(m_Value(Y)))) {
II->setArgOperand(0, X);
II->setArgOperand(1, Y);
return II;
}
// fma fabs(x), fabs(x), z -> fma x, x, z
if (match(Src0, m_Intrinsic<Intrinsic::fabs>(m_Value(LHS))) &&
match(Src1, m_Intrinsic<Intrinsic::fabs>(m_Value(RHS))) && LHS == RHS) {
II->setArgOperand(0, LHS);
II->setArgOperand(1, RHS);
if (match(Src0, m_Intrinsic<Intrinsic::fabs>(m_Value(X))) &&
match(Src1, m_Intrinsic<Intrinsic::fabs>(m_Specific(X)))) {
II->setArgOperand(0, X);
II->setArgOperand(1, X);
return II;
}
// fma x, 1, z -> fadd x, z
if (match(Src1, m_FPOne())) {
Instruction *RI = BinaryOperator::CreateFAdd(Src0, II->getArgOperand(2));
RI->copyFastMathFlags(II);
return RI;
auto *FAdd = BinaryOperator::CreateFAdd(Src0, II->getArgOperand(2));
FAdd->copyFastMathFlags(II);
return FAdd;
}
break;