1 //===-- AMDGPUTargetMachine.h - AMDGPU TargetMachine Interface --*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 /// \file
11 /// \brief The AMDGPU TargetMachine interface definition for hw codgen targets.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #ifndef LLVM_LIB_TARGET_AMDGPU_AMDGPUTARGETMACHINE_H
16 #define LLVM_LIB_TARGET_AMDGPU_AMDGPUTARGETMACHINE_H
17 
18 #include "AMDGPUIntrinsicInfo.h"
19 #include "AMDGPUSubtarget.h"
20 #include "llvm/ADT/Optional.h"
21 #include "llvm/ADT/StringMap.h"
22 #include "llvm/ADT/StringRef.h"
23 #include "llvm/Analysis/TargetTransformInfo.h"
24 #include "llvm/Support/CodeGen.h"
25 #include "llvm/Target/TargetMachine.h"
26 #include <memory>
27 
28 namespace llvm {
29 
30 //===----------------------------------------------------------------------===//
31 // AMDGPU Target Machine (R600+)
32 //===----------------------------------------------------------------------===//
33 
34 class AMDGPUTargetMachine : public LLVMTargetMachine {
35 protected:
36   std::unique_ptr<TargetLoweringObjectFile> TLOF;
37   AMDGPUIntrinsicInfo IntrinsicInfo;
38   AMDGPUAS AS;
39 
40   StringRef getGPUName(const Function &F) const;
41   StringRef getFeatureString(const Function &F) const;
42 
43 public:
44   AMDGPUTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
45                       StringRef FS, TargetOptions Options,
46                       Optional<Reloc::Model> RM, CodeModel::Model CM,
47                       CodeGenOpt::Level OL);
48   ~AMDGPUTargetMachine() override;
49 
50   const AMDGPUSubtarget *getSubtargetImpl() const;
51   const AMDGPUSubtarget *getSubtargetImpl(const Function &) const override = 0;
52 
53   const AMDGPUIntrinsicInfo *getIntrinsicInfo() const override {
54     return &IntrinsicInfo;
55   }
56   TargetIRAnalysis getTargetIRAnalysis() override;
57 
58   TargetLoweringObjectFile *getObjFileLowering() const override {
59     return TLOF.get();
60   }
61   AMDGPUAS getAMDGPUAS() const {
62     return AS;
63   }
64 
65   void adjustPassManager(PassManagerBuilder &) override;
66   /// Get the integer value of a null pointer in the given address space.
67   uint64_t getNullPointerValue(unsigned AddrSpace) const {
68     if (AddrSpace == AS.LOCAL_ADDRESS || AddrSpace == AS.REGION_ADDRESS)
69       return -1;
70     return 0;
71   }
72 };
73 
74 //===----------------------------------------------------------------------===//
75 // R600 Target Machine (R600 -> Cayman)
76 //===----------------------------------------------------------------------===//
77 
78 class R600TargetMachine final : public AMDGPUTargetMachine {
79 private:
80   mutable StringMap<std::unique_ptr<R600Subtarget>> SubtargetMap;
81 
82 public:
83   R600TargetMachine(const Target &T, const Triple &TT, StringRef CPU,
84                     StringRef FS, TargetOptions Options,
85                     Optional<Reloc::Model> RM, CodeModel::Model CM,
86                     CodeGenOpt::Level OL);
87 
88   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
89 
90   const R600Subtarget *getSubtargetImpl(const Function &) const override;
91 
92   bool isMachineVerifierClean() const override {
93     return false;
94   }
95 };
96 
97 //===----------------------------------------------------------------------===//
98 // GCN Target Machine (SI+)
99 //===----------------------------------------------------------------------===//
100 
101 class GCNTargetMachine final : public AMDGPUTargetMachine {
102 private:
103   mutable StringMap<std::unique_ptr<SISubtarget>> SubtargetMap;
104 
105 public:
106   GCNTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
107                    StringRef FS, TargetOptions Options,
108                    Optional<Reloc::Model> RM, CodeModel::Model CM,
109                    CodeGenOpt::Level OL);
110 
111   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
112 
113   const SISubtarget *getSubtargetImpl(const Function &) const override;
114 };
115 
116 } // end namespace llvm
117 
118 #endif // LLVM_LIB_TARGET_AMDGPU_AMDGPUTARGETMACHINE_H
119