llvm/lib/Target/LoongArch/LoongArchTargetTransformInfo.h

   1 //===- LoongArchTargetTransformInfo.h - LoongArch 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 a TargetTransformInfo::Concept conforming object specific to the
  10 /// LoongArch 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_LOONGARCH_LOONGARCHTARGETTRANSFORMINFO_H
  17 #define LLVM_LIB_TARGET_LOONGARCH_LOONGARCHTARGETTRANSFORMINFO_H
  18
  19 #include "LoongArchSubtarget.h"
  20 #include "LoongArchTargetMachine.h"
  21 #include "llvm/Analysis/TargetTransformInfo.h"
  22 #include "llvm/CodeGen/BasicTTIImpl.h"
  23
  24 namespace llvm {
  25
  26 class LoongArchTTIImpl : public BasicTTIImplBase<LoongArchTTIImpl> {
  27   typedef BasicTTIImplBase<LoongArchTTIImpl> BaseT;
  28   typedef TargetTransformInfo TTI;
  29   friend BaseT;
  30
  31   enum LoongArchRegisterClass { GPRRC, FPRRC, VRRC };
  32   const LoongArchSubtarget *ST;
  33   const LoongArchTargetLowering *TLI;
  34
  35   const LoongArchSubtarget *getST() const { return ST; }
  36   const LoongArchTargetLowering *getTLI() const { return TLI; }
  37
  38 public:
  39   explicit LoongArchTTIImpl(const LoongArchTargetMachine *TM, const Function &F)
  40       : BaseT(TM, F.getDataLayout()), ST(TM->getSubtargetImpl(F)),
  41         TLI(ST->getTargetLowering()) {}
  42
  43   TypeSize getRegisterBitWidth(TargetTransformInfo::RegisterKind K) const;
  44   unsigned getNumberOfRegisters(unsigned ClassID) const;
  45   unsigned getRegisterClassForType(bool Vector, Type *Ty = nullptr) const;
  46   unsigned getMaxInterleaveFactor(ElementCount VF);
  47   const char *getRegisterClassName(unsigned ClassID) const;
  48
  49   // TODO: Implement more hooks to provide TTI machinery for LoongArch.
  50 };
  51
  52 } // end namespace llvm
  53
  54 #endif // LLVM_LIB_TARGET_LOONGARCH_LOONGARCHTARGETTRANSFORMINFO_H