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[lanai] Add getIntImmCost in LanaiTargetTransformInfo.

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Add simple int immediate cost function.

llvm-svn: 309721
This commit is contained in:
Jacques Pienaar 2017-08-01 18:40:08 +00:00
parent ce20a18119
commit c6cb382a99
1 changed files with 27 additions and 0 deletions
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27
lib/Target/Lanai/LanaiTargetTransformInfo.h
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@ -22,6 +22,7 @@
#include "LanaiTargetMachine.h"
#include "llvm/Analysis/TargetTransformInfo.h"
#include "llvm/CodeGen/BasicTTIImpl.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Target/TargetLowering.h"
namespace llvm {
@ -49,6 +50,32 @@ public:
return TTI::PSK_Software;
}
int getIntImmCost(const APInt &Imm, Type *Ty) {
assert(Ty->isIntegerTy());
if (Imm == 0)
return TTI::TCC_Free;
if (isInt<16>(Imm.getSExtValue()))
return TTI::TCC_Basic;
if (isInt<21>(Imm.getZExtValue()))
return TTI::TCC_Basic;
if (isInt<32>(Imm.getSExtValue())) {
if ((Imm.getSExtValue() & 0xFFFF) == 0)
return TTI::TCC_Basic;
return 2 * TTI::TCC_Basic;
}
return 4 * TTI::TCC_Basic;
}
int getIntImmCost(unsigned Opc, unsigned Idx, const APInt &Imm, Type *Ty) {
return getIntImmCost(Imm, Ty);
}
int getIntImmCost(Intrinsic::ID IID, unsigned Idx, const APInt &Imm,
Type *Ty) {
return getIntImmCost(Imm, Ty);
}
unsigned getArithmeticInstrCost(
unsigned Opcode, Type *Ty,
TTI::OperandValueKind Opd1Info = TTI::OK_AnyValue,