1 //===-- AMDGPUAsmPrinter.h - Print AMDGPU assembly code ---------*- 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 AMDGPU Assembly printer class.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #ifndef LLVM_LIB_TARGET_R600_AMDGPUASMPRINTER_H
16 #define LLVM_LIB_TARGET_R600_AMDGPUASMPRINTER_H
17 
18 #include "llvm/CodeGen/AsmPrinter.h"
19 #include <vector>
20 
21 namespace llvm {
22 
23 class AMDGPUAsmPrinter : public AsmPrinter {
24 private:
25   struct SIProgramInfo {
SIProgramInfoSIProgramInfo26     SIProgramInfo() :
27       VGPRBlocks(0),
28       SGPRBlocks(0),
29       Priority(0),
30       FloatMode(0),
31       Priv(0),
32       DX10Clamp(0),
33       DebugMode(0),
34       IEEEMode(0),
35       ScratchSize(0),
36       ComputePGMRSrc1(0),
37       LDSBlocks(0),
38       ScratchBlocks(0),
39       ComputePGMRSrc2(0),
40       NumVGPR(0),
41       NumSGPR(0),
42       FlatUsed(false),
43       VCCUsed(false),
44       CodeLen(0) {}
45 
46     // Fields set in PGM_RSRC1 pm4 packet.
47     uint32_t VGPRBlocks;
48     uint32_t SGPRBlocks;
49     uint32_t Priority;
50     uint32_t FloatMode;
51     uint32_t Priv;
52     uint32_t DX10Clamp;
53     uint32_t DebugMode;
54     uint32_t IEEEMode;
55     uint32_t ScratchSize;
56 
57     uint64_t ComputePGMRSrc1;
58 
59     // Fields set in PGM_RSRC2 pm4 packet.
60     uint32_t LDSBlocks;
61     uint32_t ScratchBlocks;
62 
63     uint64_t ComputePGMRSrc2;
64 
65     uint32_t NumVGPR;
66     uint32_t NumSGPR;
67     uint32_t LDSSize;
68     bool FlatUsed;
69 
70     // Bonus information for debugging.
71     bool VCCUsed;
72     uint64_t CodeLen;
73   };
74 
75   void getSIProgramInfo(SIProgramInfo &Out, const MachineFunction &MF) const;
76   void findNumUsedRegistersSI(const MachineFunction &MF,
77                               unsigned &NumSGPR,
78                               unsigned &NumVGPR) const;
79 
80   /// \brief Emit register usage information so that the GPU driver
81   /// can correctly setup the GPU state.
82   void EmitProgramInfoR600(const MachineFunction &MF);
83   void EmitProgramInfoSI(const MachineFunction &MF, const SIProgramInfo &KernelInfo);
84   void EmitAmdKernelCodeT(const MachineFunction &MF,
85                           const SIProgramInfo &KernelInfo) const;
86 
87 public:
88   explicit AMDGPUAsmPrinter(TargetMachine &TM,
89                             std::unique_ptr<MCStreamer> Streamer);
90 
91   bool runOnMachineFunction(MachineFunction &MF) override;
92 
getPassName()93   const char *getPassName() const override {
94     return "AMDGPU Assembly Printer";
95   }
96 
97   /// Implemented in AMDGPUMCInstLower.cpp
98   void EmitInstruction(const MachineInstr *MI) override;
99 
100   void EmitFunctionBodyStart() override;
101 
102   void EmitFunctionEntryLabel() override;
103 
104   void EmitGlobalVariable(const GlobalVariable *GV) override;
105 
106   bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
107                        unsigned AsmVariant, const char *ExtraCode,
108                        raw_ostream &O) override;
109 
110 protected:
111   std::vector<std::string> DisasmLines, HexLines;
112   size_t DisasmLineMaxLen;
113 };
114 
115 } // End anonymous llvm
116 
117 #endif
118