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[SystemZ] implement hasDivRemOp() 

SystemZ can do division and remainder in a single instruction for scalar
integer types, which are now reflected by returning true in this hook for
those cases.

Review: Ulrich Weigand
llvm-svn: 317477
This commit is contained in:
Jonas Paulsson 2017-11-06 13:10:31 +00:00
parent 1ac16619d2
commit e54cc1a436
2 changed files with 6 additions and 0 deletions
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5
llvm/lib/Target/SystemZ/SystemZTargetTransformInfo.cpp
View File

@ -323,6 +323,11 @@ unsigned SystemZTTIImpl::getRegisterBitWidth(bool Vector) const {
return 0;
}
bool SystemZTTIImpl::hasDivRemOp(Type *DataType, bool IsSigned) {
EVT VT = TLI->getValueType(DL, DataType);
return (VT.isScalarInteger() && TLI->isTypeLegal(VT));
}
int SystemZTTIImpl::getArithmeticInstrCost(
unsigned Opcode, Type *Ty,
TTI::OperandValueKind Op1Info, TTI::OperandValueKind Op2Info,

1
llvm/lib/Target/SystemZ/SystemZTargetTransformInfo.h
View File

@ -62,6 +62,7 @@ public:
unsigned getPrefetchDistance() { return 2000; }
unsigned getMinPrefetchStride() { return 2048; }
bool hasDivRemOp(Type *DataType, bool IsSigned);
bool prefersVectorizedAddressing() { return false; }
bool LSRWithInstrQueries() { return true; }
bool supportsEfficientVectorElementLoadStore() { return true; }