1 //===-- AMDGPUTargetTransformInfo.h - AMDGPU specific TTI -------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 /// This file a TargetTransformInfo::Concept conforming object specific to the
11 /// AMDGPU target machine. It uses the target's detailed information to
12 /// provide more precise answers to certain TTI queries, while letting the
13 /// target independent and default TTI implementations handle the rest.
15 //===----------------------------------------------------------------------===//
17 #ifndef LLVM_LIB_TARGET_R600_AMDGPUTARGETTRANSFORMINFO_H
18 #define LLVM_LIB_TARGET_R600_AMDGPUTARGETTRANSFORMINFO_H
21 #include "AMDGPUTargetMachine.h"
22 #include "llvm/Analysis/TargetTransformInfo.h"
23 #include "llvm/CodeGen/BasicTTIImpl.h"
24 #include "llvm/Target/TargetLowering.h"
28 class AMDGPUTTIImpl : public BasicTTIImplBase<AMDGPUTTIImpl> {
29 typedef BasicTTIImplBase<AMDGPUTTIImpl> BaseT;
30 typedef TargetTransformInfo TTI;
33 const AMDGPUSubtarget *ST;
34 const AMDGPUTargetLowering *TLI;
36 const AMDGPUSubtarget *getST() const { return ST; }
37 const AMDGPUTargetLowering *getTLI() const { return TLI; }
40 explicit AMDGPUTTIImpl(const AMDGPUTargetMachine *TM)
41 : BaseT(TM), ST(TM->getSubtargetImpl()), TLI(ST->getTargetLowering()) {}
43 // Provide value semantics. MSVC requires that we spell all of these out.
44 AMDGPUTTIImpl(const AMDGPUTTIImpl &Arg)
45 : BaseT(static_cast<const BaseT &>(Arg)), ST(Arg.ST), TLI(Arg.TLI) {}
46 AMDGPUTTIImpl(AMDGPUTTIImpl &&Arg)
47 : BaseT(std::move(static_cast<BaseT &>(Arg))), ST(std::move(Arg.ST)),
48 TLI(std::move(Arg.TLI)) {}
49 AMDGPUTTIImpl &operator=(const AMDGPUTTIImpl &RHS) {
50 BaseT::operator=(static_cast<const BaseT &>(RHS));
55 AMDGPUTTIImpl &operator=(AMDGPUTTIImpl &&RHS) {
56 BaseT::operator=(std::move(static_cast<BaseT &>(RHS)));
57 ST = std::move(RHS.ST);
58 TLI = std::move(RHS.TLI);
62 bool hasBranchDivergence() { return true; }
64 void getUnrollingPreferences(Loop *L, TTI::UnrollingPreferences &UP);
66 TTI::PopcntSupportKind getPopcntSupport(unsigned TyWidth) {
67 assert(isPowerOf2_32(TyWidth) && "Ty width must be power of 2");
68 return ST->hasBCNT(TyWidth) ? TTI::PSK_FastHardware : TTI::PSK_Software;
71 unsigned getNumberOfRegisters(bool Vector);
72 unsigned getRegisterBitWidth(bool Vector);
73 unsigned getMaxInterleaveFactor();
76 } // end namespace llvm