RISCVTargetTransformInfo.h revision 360784 
1//===- RISCVTargetTransformInfo.h - RISC-V specific TTI ---------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8/// \file
9/// This file defines a TargetTransformInfo::Concept conforming object specific
10/// to the RISC-V target machine. It uses the target's detailed information to
11/// provide more precise answers to certain TTI queries, while letting the
12/// target independent and default TTI implementations handle the rest.
13///
14//===----------------------------------------------------------------------===//
15
16#ifndef LLVM_LIB_TARGET_RISCV_RISCVTARGETTRANSFORMINFO_H
17#define LLVM_LIB_TARGET_RISCV_RISCVTARGETTRANSFORMINFO_H
18
19#include "RISCVSubtarget.h"
20#include "RISCVTargetMachine.h"
21#include "llvm/Analysis/TargetTransformInfo.h"
22#include "llvm/CodeGen/BasicTTIImpl.h"
23#include "llvm/IR/Function.h"
24
25namespace llvm {
26
27class RISCVTTIImpl : public BasicTTIImplBase<RISCVTTIImpl> {
28  using BaseT = BasicTTIImplBase<RISCVTTIImpl>;
29  using TTI = TargetTransformInfo;
30
31  friend BaseT;
32
33  const RISCVSubtarget *ST;
34  const RISCVTargetLowering *TLI;
35
36  const RISCVSubtarget *getST() const { return ST; }
37  const RISCVTargetLowering *getTLI() const { return TLI; }
38
39public:
40  explicit RISCVTTIImpl(const RISCVTargetMachine *TM, const Function &F)
41      : BaseT(TM, F.getParent()->getDataLayout()), ST(TM->getSubtargetImpl(F)),
42        TLI(ST->getTargetLowering()) {}
43
44  int getIntImmCost(const APInt &Imm, Type *Ty);
45  int getIntImmCostInst(unsigned Opcode, unsigned Idx, const APInt &Imm, Type *Ty);
46  int getIntImmCostIntrin(Intrinsic::ID IID, unsigned Idx, const APInt &Imm,
47                          Type *Ty);
48};
49
50} // end namespace llvm
51
52#endif // LLVM_LIB_TARGET_RISCV_RISCVTARGETTRANSFORMINFO_H