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Tidied up switch cases. NFCI.

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Split FCMP//ICMP/SEL from the basic arithmetic cost functions. They were not sharing any notable code path (just the return) and were repeatedly testing the opcode.

llvm-svn: 269348
This commit is contained in:
Simon Pilgrim 2016-05-12 21:01:20 +00:00
parent c1b0c5a7b4
commit 81b1cf65e7
1 changed files with 47 additions and 51 deletions
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28
lib/Transforms/Vectorize/SLPVectorizer.cpp
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@ -1640,7 +1640,14 @@ int BoUpSLP::getEntryCost(TreeEntry *E) {
}
case Instruction::FCmp:
case Instruction::ICmp:
case Instruction::Select:
case Instruction::Select: {
// Calculate the cost of this instruction.
VectorType *MaskTy = VectorType::get(Builder.getInt1Ty(), VL.size());
int ScalarCost = VecTy->getNumElements() *
TTI->getCmpSelInstrCost(Opcode, ScalarTy, Builder.getInt1Ty());
int VecCost = TTI->getCmpSelInstrCost(Opcode, VecTy, MaskTy);
return VecCost - ScalarCost;
}
case Instruction::Add:
case Instruction::FAdd:
case Instruction::Sub:
@ -1659,16 +1666,6 @@ int BoUpSLP::getEntryCost(TreeEntry *E) {
case Instruction::And:
case Instruction::Or:
case Instruction::Xor: {
// Calculate the cost of this instruction.
int ScalarCost = 0;
int VecCost = 0;
if (Opcode == Instruction::FCmp || Opcode == Instruction::ICmp ||
Opcode == Instruction::Select) {
VectorType *MaskTy = VectorType::get(Builder.getInt1Ty(), VL.size());
ScalarCost = VecTy->getNumElements() *
TTI->getCmpSelInstrCost(Opcode, ScalarTy, Builder.getInt1Ty());
VecCost = TTI->getCmpSelInstrCost(Opcode, VecTy, MaskTy);
} else {
// Certain instructions can be cheaper to vectorize if they have a
// constant second vector operand.
TargetTransformInfo::OperandValueKind Op1VK =
@ -1706,12 +1703,11 @@ int BoUpSLP::getEntryCost(TreeEntry *E) {
CInt->getValue().isPowerOf2())
Op2VP = TargetTransformInfo::OP_PowerOf2;
ScalarCost = VecTy->getNumElements() *
TTI->getArithmeticInstrCost(Opcode, ScalarTy, Op1VK, Op2VK,
int ScalarCost = VecTy->getNumElements() *
TTI->getArithmeticInstrCost(Opcode, ScalarTy, Op1VK,
Op2VK, Op1VP, Op2VP);
int VecCost = TTI->getArithmeticInstrCost(Opcode, VecTy, Op1VK, Op2VK,
Op1VP, Op2VP);
VecCost = TTI->getArithmeticInstrCost(Opcode, VecTy, Op1VK, Op2VK,
Op1VP, Op2VP);
}
return VecCost - ScalarCost;
}
case Instruction::GetElementPtr: {