| //===-- AMDGPUTargetTransformInfo.h - AMDGPU specific TTI -------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| /// \file |
| /// This file a TargetTransformInfo::Concept conforming object specific to the |
| /// AMDGPU target machine. It uses the target's detailed information to |
| /// provide more precise answers to certain TTI queries, while letting the |
| /// target independent and default TTI implementations handle the rest. |
| /// |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIB_TARGET_R600_AMDGPUTARGETTRANSFORMINFO_H |
| #define LLVM_LIB_TARGET_R600_AMDGPUTARGETTRANSFORMINFO_H |
| |
| #include "AMDGPU.h" |
| #include "AMDGPUTargetMachine.h" |
| #include "llvm/Analysis/TargetTransformInfo.h" |
| #include "llvm/CodeGen/BasicTTIImpl.h" |
| #include "llvm/Target/TargetLowering.h" |
| |
| namespace llvm { |
| |
| class AMDGPUTTIImpl : public BasicTTIImplBase<AMDGPUTTIImpl> { |
| typedef BasicTTIImplBase<AMDGPUTTIImpl> BaseT; |
| typedef TargetTransformInfo TTI; |
| friend BaseT; |
| |
| const AMDGPUSubtarget *ST; |
| const AMDGPUTargetLowering *TLI; |
| |
| const AMDGPUSubtarget *getST() const { return ST; } |
| const AMDGPUTargetLowering *getTLI() const { return TLI; } |
| |
| public: |
| explicit AMDGPUTTIImpl(const AMDGPUTargetMachine *TM, const DataLayout &DL) |
| : BaseT(TM, DL), ST(TM->getSubtargetImpl()), |
| TLI(ST->getTargetLowering()) {} |
| |
| // Provide value semantics. MSVC requires that we spell all of these out. |
| AMDGPUTTIImpl(const AMDGPUTTIImpl &Arg) |
| : BaseT(static_cast<const BaseT &>(Arg)), ST(Arg.ST), TLI(Arg.TLI) {} |
| AMDGPUTTIImpl(AMDGPUTTIImpl &&Arg) |
| : BaseT(std::move(static_cast<BaseT &>(Arg))), ST(std::move(Arg.ST)), |
| TLI(std::move(Arg.TLI)) {} |
| |
| bool hasBranchDivergence() { return true; } |
| |
| void getUnrollingPreferences(Loop *L, TTI::UnrollingPreferences &UP); |
| |
| TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth) { |
| assert(isPowerOf2_32(TyWidth) && "Ty width must be power of 2"); |
| return ST->hasBCNT(TyWidth) ? TTI::PSK_FastHardware : TTI::PSK_Software; |
| } |
| |
| unsigned getNumberOfRegisters(bool Vector); |
| unsigned getRegisterBitWidth(bool Vector); |
| unsigned getMaxInterleaveFactor(unsigned VF); |
| |
| unsigned getCFInstrCost(unsigned Opcode); |
| |
| int getVectorInstrCost(unsigned Opcode, Type *ValTy, unsigned Index); |
| bool isSourceOfDivergence(const Value *V) const; |
| }; |
| |
| } // end namespace llvm |
| |
| #endif |