1 //===-- AMDGPUTargetMachine.h - AMDGPU TargetMachine Interface --*- 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 //
9 /// \file
10 /// The AMDGPU TargetMachine interface definition for hw codgen targets.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_LIB_TARGET_AMDGPU_AMDGPUTARGETMACHINE_H
15 #define LLVM_LIB_TARGET_AMDGPU_AMDGPUTARGETMACHINE_H
16 
17 #include "GCNSubtarget.h"
18 #include "R600Subtarget.h"
19 #include "llvm/Target/TargetMachine.h"
20 
21 namespace llvm {
22 
23 //===----------------------------------------------------------------------===//
24 // AMDGPU Target Machine (R600+)
25 //===----------------------------------------------------------------------===//
26 
27 class AMDGPUTargetMachine : public LLVMTargetMachine {
28 protected:
29   std::unique_ptr<TargetLoweringObjectFile> TLOF;
30 
31   StringRef getGPUName(const Function &F) const;
32   StringRef getFeatureString(const Function &F) const;
33 
34 public:
35   static bool EnableLateStructurizeCFG;
36   static bool EnableFunctionCalls;
37   static bool EnableFixedFunctionABI;
38   static bool EnableLowerModuleLDS;
39 
40   AMDGPUTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
41                       StringRef FS, TargetOptions Options,
42                       Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM,
43                       CodeGenOpt::Level OL);
44   ~AMDGPUTargetMachine() override;
45 
46   const TargetSubtargetInfo *getSubtargetImpl() const;
47   const TargetSubtargetInfo *getSubtargetImpl(const Function &) const override = 0;
48 
49   TargetLoweringObjectFile *getObjFileLowering() const override {
50     return TLOF.get();
51   }
52 
53   void adjustPassManager(PassManagerBuilder &) override;
54 
55   void registerPassBuilderCallbacks(PassBuilder &PB,
56                                     bool DebugPassManager) override;
57   void registerDefaultAliasAnalyses(AAManager &) override;
58 
59   /// Get the integer value of a null pointer in the given address space.
60   static int64_t getNullPointerValue(unsigned AddrSpace);
61 
62   bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override;
63 
64   unsigned getAssumedAddrSpace(const Value *V) const override;
65 };
66 
67 //===----------------------------------------------------------------------===//
68 // R600 Target Machine (R600 -> Cayman)
69 //===----------------------------------------------------------------------===//
70 
71 class R600TargetMachine final : public AMDGPUTargetMachine {
72 private:
73   mutable StringMap<std::unique_ptr<R600Subtarget>> SubtargetMap;
74 
75 public:
76   R600TargetMachine(const Target &T, const Triple &TT, StringRef CPU,
77                     StringRef FS, TargetOptions Options,
78                     Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM,
79                     CodeGenOpt::Level OL, bool JIT);
80 
81   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
82 
83   const R600Subtarget *getSubtargetImpl(const Function &) const override;
84 
85   TargetTransformInfo getTargetTransformInfo(const Function &F) override;
86 
87   bool isMachineVerifierClean() const override {
88     return false;
89   }
90 };
91 
92 //===----------------------------------------------------------------------===//
93 // GCN Target Machine (SI+)
94 //===----------------------------------------------------------------------===//
95 
96 class GCNTargetMachine final : public AMDGPUTargetMachine {
97 private:
98   mutable StringMap<std::unique_ptr<GCNSubtarget>> SubtargetMap;
99 
100 public:
101   GCNTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
102                    StringRef FS, TargetOptions Options,
103                    Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM,
104                    CodeGenOpt::Level OL, bool JIT);
105 
106   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
107 
108   const GCNSubtarget *getSubtargetImpl(const Function &) const override;
109 
110   TargetTransformInfo getTargetTransformInfo(const Function &F) override;
111 
112   bool useIPRA() const override {
113     return true;
114   }
115 
116   yaml::MachineFunctionInfo *createDefaultFuncInfoYAML() const override;
117   yaml::MachineFunctionInfo *
118   convertFuncInfoToYAML(const MachineFunction &MF) const override;
119   bool parseMachineFunctionInfo(const yaml::MachineFunctionInfo &,
120                                 PerFunctionMIParsingState &PFS,
121                                 SMDiagnostic &Error,
122                                 SMRange &SourceRange) const override;
123 };
124 
125 } // end namespace llvm
126 
127 #endif // LLVM_LIB_TARGET_AMDGPU_AMDGPUTARGETMACHINE_H
128