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_AMDGPU_AMDGPUASMPRINTER_H 16 #define LLVM_LIB_TARGET_AMDGPU_AMDGPUASMPRINTER_H 17 18 #include "llvm/CodeGen/AsmPrinter.h" 19 #include <vector> 20 21 namespace llvm { 22 23 class AMDGPUAsmPrinter final : public AsmPrinter { 24 private: 25 struct SIProgramInfo { 26 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 ReservedVGPRFirst(0), 44 ReservedVGPRCount(0), 45 DebuggerWavefrontPrivateSegmentOffsetSGPR((uint16_t)-1), 46 DebuggerPrivateSegmentBufferSGPR((uint16_t)-1), 47 VCCUsed(false), 48 CodeLen(0) {} 49 50 // Fields set in PGM_RSRC1 pm4 packet. 51 uint32_t VGPRBlocks; 52 uint32_t SGPRBlocks; 53 uint32_t Priority; 54 uint32_t FloatMode; 55 uint32_t Priv; 56 uint32_t DX10Clamp; 57 uint32_t DebugMode; 58 uint32_t IEEEMode; 59 uint32_t ScratchSize; 60 61 uint64_t ComputePGMRSrc1; 62 63 // Fields set in PGM_RSRC2 pm4 packet. 64 uint32_t LDSBlocks; 65 uint32_t ScratchBlocks; 66 67 uint64_t ComputePGMRSrc2; 68 69 uint32_t NumVGPR; 70 uint32_t NumSGPR; 71 uint32_t LDSSize; 72 bool FlatUsed; 73 74 // If ReservedVGPRCount is 0 then must be 0. Otherwise, this is the first 75 // fixed VGPR number reserved. 76 uint16_t ReservedVGPRFirst; 77 // The number of consecutive VGPRs reserved. 78 uint16_t ReservedVGPRCount; 79 80 // Fixed SGPR number used to hold wave scratch offset for entire kernel 81 // execution, or uint16_t(-1) if the register is not used or not known. 82 uint16_t DebuggerWavefrontPrivateSegmentOffsetSGPR; 83 // Fixed SGPR number of the first 4 SGPRs used to hold scratch V# for entire 84 // kernel execution, or uint16_t(-1) if the register is not used or not 85 // known. 86 uint16_t DebuggerPrivateSegmentBufferSGPR; 87 88 // Bonus information for debugging. 89 bool VCCUsed; 90 uint64_t CodeLen; 91 }; 92 93 void getSIProgramInfo(SIProgramInfo &Out, const MachineFunction &MF) const; 94 void findNumUsedRegistersSI(const MachineFunction &MF, 95 unsigned &NumSGPR, 96 unsigned &NumVGPR) const; 97 98 /// \brief Emit register usage information so that the GPU driver 99 /// can correctly setup the GPU state. 100 void EmitProgramInfoR600(const MachineFunction &MF); 101 void EmitProgramInfoSI(const MachineFunction &MF, const SIProgramInfo &KernelInfo); 102 void EmitAmdKernelCodeT(const MachineFunction &MF, 103 const SIProgramInfo &KernelInfo) const; 104 105 public: 106 explicit AMDGPUAsmPrinter(TargetMachine &TM, 107 std::unique_ptr<MCStreamer> Streamer); 108 109 bool runOnMachineFunction(MachineFunction &MF) override; 110 111 const char *getPassName() const override { 112 return "AMDGPU Assembly Printer"; 113 } 114 115 /// Implemented in AMDGPUMCInstLower.cpp 116 void EmitInstruction(const MachineInstr *MI) override; 117 118 void EmitFunctionBodyStart() override; 119 120 void EmitFunctionEntryLabel() override; 121 122 void EmitGlobalVariable(const GlobalVariable *GV) override; 123 124 void EmitStartOfAsmFile(Module &M) override; 125 126 bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo, 127 unsigned AsmVariant, const char *ExtraCode, 128 raw_ostream &O) override; 129 130 protected: 131 std::vector<std::string> DisasmLines, HexLines; 132 size_t DisasmLineMaxLen; 133 }; 134 135 } // End anonymous llvm 136 137 #endif 138
