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Diffstat (limited to 'contrib/llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp')
| -rw-r--r-- | contrib/llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp | 682 |
1 files changed, 682 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp b/contrib/llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp new file mode 100644 index 0000000..1239dfb2 --- /dev/null +++ b/contrib/llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp @@ -0,0 +1,682 @@ +//===-- AMDGPUAsmPrinter.cpp - AMDGPU Assebly printer --------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +/// \file +/// +/// The AMDGPUAsmPrinter is used to print both assembly string and also binary +/// code. When passed an MCAsmStreamer it prints assembly and when passed +/// an MCObjectStreamer it outputs binary code. +// +//===----------------------------------------------------------------------===// +// + +#include "AMDGPUAsmPrinter.h" +#include "MCTargetDesc/AMDGPUTargetStreamer.h" +#include "InstPrinter/AMDGPUInstPrinter.h" +#include "Utils/AMDGPUBaseInfo.h" +#include "AMDGPU.h" +#include "AMDKernelCodeT.h" +#include "AMDGPUSubtarget.h" +#include "R600Defines.h" +#include "R600MachineFunctionInfo.h" +#include "R600RegisterInfo.h" +#include "SIDefines.h" +#include "SIMachineFunctionInfo.h" +#include "SIRegisterInfo.h" +#include "llvm/CodeGen/MachineFrameInfo.h" +#include "llvm/MC/MCContext.h" +#include "llvm/MC/MCSectionELF.h" +#include "llvm/MC/MCStreamer.h" +#include "llvm/Support/ELF.h" +#include "llvm/Support/MathExtras.h" +#include "llvm/Support/TargetRegistry.h" +#include "llvm/Target/TargetLoweringObjectFile.h" + +using namespace llvm; + +// TODO: This should get the default rounding mode from the kernel. We just set +// the default here, but this could change if the OpenCL rounding mode pragmas +// are used. +// +// The denormal mode here should match what is reported by the OpenCL runtime +// for the CL_FP_DENORM bit from CL_DEVICE_{HALF|SINGLE|DOUBLE}_FP_CONFIG, but +// can also be override to flush with the -cl-denorms-are-zero compiler flag. +// +// AMD OpenCL only sets flush none and reports CL_FP_DENORM for double +// precision, and leaves single precision to flush all and does not report +// CL_FP_DENORM for CL_DEVICE_SINGLE_FP_CONFIG. Mesa's OpenCL currently reports +// CL_FP_DENORM for both. +// +// FIXME: It seems some instructions do not support single precision denormals +// regardless of the mode (exp_*_f32, rcp_*_f32, rsq_*_f32, rsq_*f32, sqrt_f32, +// and sin_f32, cos_f32 on most parts). + +// We want to use these instructions, and using fp32 denormals also causes +// instructions to run at the double precision rate for the device so it's +// probably best to just report no single precision denormals. +static uint32_t getFPMode(const MachineFunction &F) { + const AMDGPUSubtarget& ST = F.getSubtarget<AMDGPUSubtarget>(); + // TODO: Is there any real use for the flush in only / flush out only modes? + + uint32_t FP32Denormals = + ST.hasFP32Denormals() ? FP_DENORM_FLUSH_NONE : FP_DENORM_FLUSH_IN_FLUSH_OUT; + + uint32_t FP64Denormals = + ST.hasFP64Denormals() ? FP_DENORM_FLUSH_NONE : FP_DENORM_FLUSH_IN_FLUSH_OUT; + + return FP_ROUND_MODE_SP(FP_ROUND_ROUND_TO_NEAREST) | + FP_ROUND_MODE_DP(FP_ROUND_ROUND_TO_NEAREST) | + FP_DENORM_MODE_SP(FP32Denormals) | + FP_DENORM_MODE_DP(FP64Denormals); +} + +static AsmPrinter * +createAMDGPUAsmPrinterPass(TargetMachine &tm, + std::unique_ptr<MCStreamer> &&Streamer) { + return new AMDGPUAsmPrinter(tm, std::move(Streamer)); +} + +extern "C" void LLVMInitializeAMDGPUAsmPrinter() { + TargetRegistry::RegisterAsmPrinter(TheAMDGPUTarget, createAMDGPUAsmPrinterPass); + TargetRegistry::RegisterAsmPrinter(TheGCNTarget, createAMDGPUAsmPrinterPass); +} + +AMDGPUAsmPrinter::AMDGPUAsmPrinter(TargetMachine &TM, + std::unique_ptr<MCStreamer> Streamer) + : AsmPrinter(TM, std::move(Streamer)) {} + +void AMDGPUAsmPrinter::EmitStartOfAsmFile(Module &M) { + if (TM.getTargetTriple().getOS() != Triple::AMDHSA) + return; + + // Need to construct an MCSubtargetInfo here in case we have no functions + // in the module. + std::unique_ptr<MCSubtargetInfo> STI(TM.getTarget().createMCSubtargetInfo( + TM.getTargetTriple().str(), TM.getTargetCPU(), + TM.getTargetFeatureString())); + + AMDGPUTargetStreamer *TS = + static_cast<AMDGPUTargetStreamer *>(OutStreamer->getTargetStreamer()); + + TS->EmitDirectiveHSACodeObjectVersion(1, 0); + AMDGPU::IsaVersion ISA = AMDGPU::getIsaVersion(STI->getFeatureBits()); + TS->EmitDirectiveHSACodeObjectISA(ISA.Major, ISA.Minor, ISA.Stepping, + "AMD", "AMDGPU"); +} + +void AMDGPUAsmPrinter::EmitFunctionBodyStart() { + const AMDGPUSubtarget &STM = MF->getSubtarget<AMDGPUSubtarget>(); + SIProgramInfo KernelInfo; + if (STM.isAmdHsaOS()) { + getSIProgramInfo(KernelInfo, *MF); + EmitAmdKernelCodeT(*MF, KernelInfo); + } +} + +void AMDGPUAsmPrinter::EmitFunctionEntryLabel() { + const SIMachineFunctionInfo *MFI = MF->getInfo<SIMachineFunctionInfo>(); + const AMDGPUSubtarget &STM = MF->getSubtarget<AMDGPUSubtarget>(); + if (MFI->isKernel() && STM.isAmdHsaOS()) { + AMDGPUTargetStreamer *TS = + static_cast<AMDGPUTargetStreamer *>(OutStreamer->getTargetStreamer()); + TS->EmitAMDGPUSymbolType(CurrentFnSym->getName(), + ELF::STT_AMDGPU_HSA_KERNEL); + } + + AsmPrinter::EmitFunctionEntryLabel(); +} + +static bool isModuleLinkage(const GlobalValue *GV) { + switch (GV->getLinkage()) { + case GlobalValue::InternalLinkage: + case GlobalValue::CommonLinkage: + return true; + case GlobalValue::ExternalLinkage: + return false; + default: llvm_unreachable("unknown linkage type"); + } +} + +void AMDGPUAsmPrinter::EmitGlobalVariable(const GlobalVariable *GV) { + + if (TM.getTargetTriple().getOS() != Triple::AMDHSA) { + AsmPrinter::EmitGlobalVariable(GV); + return; + } + + if (GV->isDeclaration() || GV->getLinkage() == GlobalValue::PrivateLinkage) { + AsmPrinter::EmitGlobalVariable(GV); + return; + } + + // Group segment variables aren't emitted in HSA. + if (AMDGPU::isGroupSegment(GV)) + return; + + AMDGPUTargetStreamer *TS = + static_cast<AMDGPUTargetStreamer *>(OutStreamer->getTargetStreamer()); + if (isModuleLinkage(GV)) { + TS->EmitAMDGPUHsaModuleScopeGlobal(GV->getName()); + } else { + TS->EmitAMDGPUHsaProgramScopeGlobal(GV->getName()); + } + + MCSymbolELF *GVSym = cast<MCSymbolELF>(getSymbol(GV)); + const DataLayout &DL = getDataLayout(); + + // Emit the size + uint64_t Size = DL.getTypeAllocSize(GV->getType()->getElementType()); + OutStreamer->emitELFSize(GVSym, MCConstantExpr::create(Size, OutContext)); + OutStreamer->PushSection(); + OutStreamer->SwitchSection( + getObjFileLowering().SectionForGlobal(GV, *Mang, TM)); + const Constant *C = GV->getInitializer(); + OutStreamer->EmitLabel(GVSym); + EmitGlobalConstant(DL, C); + OutStreamer->PopSection(); +} + +bool AMDGPUAsmPrinter::runOnMachineFunction(MachineFunction &MF) { + + // The starting address of all shader programs must be 256 bytes aligned. + MF.setAlignment(8); + + SetupMachineFunction(MF); + + MCContext &Context = getObjFileLowering().getContext(); + MCSectionELF *ConfigSection = + Context.getELFSection(".AMDGPU.config", ELF::SHT_PROGBITS, 0); + OutStreamer->SwitchSection(ConfigSection); + + const AMDGPUSubtarget &STM = MF.getSubtarget<AMDGPUSubtarget>(); + SIProgramInfo KernelInfo; + if (STM.getGeneration() >= AMDGPUSubtarget::SOUTHERN_ISLANDS) { + getSIProgramInfo(KernelInfo, MF); + if (!STM.isAmdHsaOS()) { + EmitProgramInfoSI(MF, KernelInfo); + } + } else { + EmitProgramInfoR600(MF); + } + + DisasmLines.clear(); + HexLines.clear(); + DisasmLineMaxLen = 0; + + EmitFunctionBody(); + + if (isVerbose()) { + MCSectionELF *CommentSection = + Context.getELFSection(".AMDGPU.csdata", ELF::SHT_PROGBITS, 0); + OutStreamer->SwitchSection(CommentSection); + + if (STM.getGeneration() >= AMDGPUSubtarget::SOUTHERN_ISLANDS) { + OutStreamer->emitRawComment(" Kernel info:", false); + OutStreamer->emitRawComment(" codeLenInByte = " + Twine(KernelInfo.CodeLen), + false); + OutStreamer->emitRawComment(" NumSgprs: " + Twine(KernelInfo.NumSGPR), + false); + OutStreamer->emitRawComment(" NumVgprs: " + Twine(KernelInfo.NumVGPR), + false); + OutStreamer->emitRawComment(" FloatMode: " + Twine(KernelInfo.FloatMode), + false); + OutStreamer->emitRawComment(" IeeeMode: " + Twine(KernelInfo.IEEEMode), + false); + OutStreamer->emitRawComment(" ScratchSize: " + Twine(KernelInfo.ScratchSize), + false); + + OutStreamer->emitRawComment(" COMPUTE_PGM_RSRC2:USER_SGPR: " + + Twine(G_00B84C_USER_SGPR(KernelInfo.ComputePGMRSrc2)), + false); + OutStreamer->emitRawComment(" COMPUTE_PGM_RSRC2:TGID_X_EN: " + + Twine(G_00B84C_TGID_X_EN(KernelInfo.ComputePGMRSrc2)), + false); + OutStreamer->emitRawComment(" COMPUTE_PGM_RSRC2:TGID_Y_EN: " + + Twine(G_00B84C_TGID_Y_EN(KernelInfo.ComputePGMRSrc2)), + false); + OutStreamer->emitRawComment(" COMPUTE_PGM_RSRC2:TGID_Z_EN: " + + Twine(G_00B84C_TGID_Z_EN(KernelInfo.ComputePGMRSrc2)), + false); + OutStreamer->emitRawComment(" COMPUTE_PGM_RSRC2:TIDIG_COMP_CNT: " + + Twine(G_00B84C_TIDIG_COMP_CNT(KernelInfo.ComputePGMRSrc2)), + false); + + } else { + R600MachineFunctionInfo *MFI = MF.getInfo<R600MachineFunctionInfo>(); + OutStreamer->emitRawComment( + Twine("SQ_PGM_RESOURCES:STACK_SIZE = " + Twine(MFI->StackSize))); + } + } + + if (STM.dumpCode()) { + + OutStreamer->SwitchSection( + Context.getELFSection(".AMDGPU.disasm", ELF::SHT_NOTE, 0)); + + for (size_t i = 0; i < DisasmLines.size(); ++i) { + std::string Comment(DisasmLineMaxLen - DisasmLines[i].size(), ' '); + Comment += " ; " + HexLines[i] + "\n"; + + OutStreamer->EmitBytes(StringRef(DisasmLines[i])); + OutStreamer->EmitBytes(StringRef(Comment)); + } + } + + return false; +} + +void AMDGPUAsmPrinter::EmitProgramInfoR600(const MachineFunction &MF) { + unsigned MaxGPR = 0; + bool killPixel = false; + const AMDGPUSubtarget &STM = MF.getSubtarget<AMDGPUSubtarget>(); + const R600RegisterInfo *RI = + static_cast<const R600RegisterInfo *>(STM.getRegisterInfo()); + const R600MachineFunctionInfo *MFI = MF.getInfo<R600MachineFunctionInfo>(); + + for (const MachineBasicBlock &MBB : MF) { + for (const MachineInstr &MI : MBB) { + if (MI.getOpcode() == AMDGPU::KILLGT) + killPixel = true; + unsigned numOperands = MI.getNumOperands(); + for (unsigned op_idx = 0; op_idx < numOperands; op_idx++) { + const MachineOperand &MO = MI.getOperand(op_idx); + if (!MO.isReg()) + continue; + unsigned HWReg = RI->getEncodingValue(MO.getReg()) & 0xff; + + // Register with value > 127 aren't GPR + if (HWReg > 127) + continue; + MaxGPR = std::max(MaxGPR, HWReg); + } + } + } + + unsigned RsrcReg; + if (STM.getGeneration() >= AMDGPUSubtarget::EVERGREEN) { + // Evergreen / Northern Islands + switch (MFI->getShaderType()) { + default: // Fall through + case ShaderType::COMPUTE: RsrcReg = R_0288D4_SQ_PGM_RESOURCES_LS; break; + case ShaderType::GEOMETRY: RsrcReg = R_028878_SQ_PGM_RESOURCES_GS; break; + case ShaderType::PIXEL: RsrcReg = R_028844_SQ_PGM_RESOURCES_PS; break; + case ShaderType::VERTEX: RsrcReg = R_028860_SQ_PGM_RESOURCES_VS; break; + } + } else { + // R600 / R700 + switch (MFI->getShaderType()) { + default: // Fall through + case ShaderType::GEOMETRY: // Fall through + case ShaderType::COMPUTE: // Fall through + case ShaderType::VERTEX: RsrcReg = R_028868_SQ_PGM_RESOURCES_VS; break; + case ShaderType::PIXEL: RsrcReg = R_028850_SQ_PGM_RESOURCES_PS; break; + } + } + + OutStreamer->EmitIntValue(RsrcReg, 4); + OutStreamer->EmitIntValue(S_NUM_GPRS(MaxGPR + 1) | + S_STACK_SIZE(MFI->StackSize), 4); + OutStreamer->EmitIntValue(R_02880C_DB_SHADER_CONTROL, 4); + OutStreamer->EmitIntValue(S_02880C_KILL_ENABLE(killPixel), 4); + + if (MFI->getShaderType() == ShaderType::COMPUTE) { + OutStreamer->EmitIntValue(R_0288E8_SQ_LDS_ALLOC, 4); + OutStreamer->EmitIntValue(RoundUpToAlignment(MFI->LDSSize, 4) >> 2, 4); + } +} + +void AMDGPUAsmPrinter::getSIProgramInfo(SIProgramInfo &ProgInfo, + const MachineFunction &MF) const { + const AMDGPUSubtarget &STM = MF.getSubtarget<AMDGPUSubtarget>(); + const SIMachineFunctionInfo *MFI = MF.getInfo<SIMachineFunctionInfo>(); + uint64_t CodeSize = 0; + unsigned MaxSGPR = 0; + unsigned MaxVGPR = 0; + bool VCCUsed = false; + bool FlatUsed = false; + const SIRegisterInfo *RI = + static_cast<const SIRegisterInfo *>(STM.getRegisterInfo()); + + for (const MachineBasicBlock &MBB : MF) { + for (const MachineInstr &MI : MBB) { + // TODO: CodeSize should account for multiple functions. + + // TODO: Should we count size of debug info? + if (MI.isDebugValue()) + continue; + + // FIXME: This is reporting 0 for many instructions. + CodeSize += MI.getDesc().Size; + + unsigned numOperands = MI.getNumOperands(); + for (unsigned op_idx = 0; op_idx < numOperands; op_idx++) { + const MachineOperand &MO = MI.getOperand(op_idx); + unsigned width = 0; + bool isSGPR = false; + + if (!MO.isReg()) + continue; + + unsigned reg = MO.getReg(); + switch (reg) { + case AMDGPU::EXEC: + case AMDGPU::SCC: + case AMDGPU::M0: + continue; + + case AMDGPU::VCC: + case AMDGPU::VCC_LO: + case AMDGPU::VCC_HI: + VCCUsed = true; + continue; + + case AMDGPU::FLAT_SCR: + case AMDGPU::FLAT_SCR_LO: + case AMDGPU::FLAT_SCR_HI: + FlatUsed = true; + continue; + + default: + break; + } + + if (AMDGPU::SReg_32RegClass.contains(reg)) { + isSGPR = true; + width = 1; + } else if (AMDGPU::VGPR_32RegClass.contains(reg)) { + isSGPR = false; + width = 1; + } else if (AMDGPU::SReg_64RegClass.contains(reg)) { + isSGPR = true; + width = 2; + } else if (AMDGPU::VReg_64RegClass.contains(reg)) { + isSGPR = false; + width = 2; + } else if (AMDGPU::VReg_96RegClass.contains(reg)) { + isSGPR = false; + width = 3; + } else if (AMDGPU::SReg_128RegClass.contains(reg)) { + isSGPR = true; + width = 4; + } else if (AMDGPU::VReg_128RegClass.contains(reg)) { + isSGPR = false; + width = 4; + } else if (AMDGPU::SReg_256RegClass.contains(reg)) { + isSGPR = true; + width = 8; + } else if (AMDGPU::VReg_256RegClass.contains(reg)) { + isSGPR = false; + width = 8; + } else if (AMDGPU::SReg_512RegClass.contains(reg)) { + isSGPR = true; + width = 16; + } else if (AMDGPU::VReg_512RegClass.contains(reg)) { + isSGPR = false; + width = 16; + } else { + llvm_unreachable("Unknown register class"); + } + unsigned hwReg = RI->getEncodingValue(reg) & 0xff; + unsigned maxUsed = hwReg + width - 1; + if (isSGPR) { + MaxSGPR = maxUsed > MaxSGPR ? maxUsed : MaxSGPR; + } else { + MaxVGPR = maxUsed > MaxVGPR ? maxUsed : MaxVGPR; + } + } + } + } + + unsigned ExtraSGPRs = 0; + + if (VCCUsed) + ExtraSGPRs = 2; + + if (STM.getGeneration() < AMDGPUSubtarget::VOLCANIC_ISLANDS) { + if (FlatUsed) + ExtraSGPRs = 4; + } else { + if (STM.isXNACKEnabled()) + ExtraSGPRs = 4; + + if (FlatUsed) + ExtraSGPRs = 6; + } + + MaxSGPR += ExtraSGPRs; + + // We found the maximum register index. They start at 0, so add one to get the + // number of registers. + ProgInfo.NumVGPR = MaxVGPR + 1; + ProgInfo.NumSGPR = MaxSGPR + 1; + + if (STM.hasSGPRInitBug()) { + if (ProgInfo.NumSGPR > AMDGPUSubtarget::FIXED_SGPR_COUNT_FOR_INIT_BUG) { + LLVMContext &Ctx = MF.getFunction()->getContext(); + Ctx.emitError("too many SGPRs used with the SGPR init bug"); + } + + ProgInfo.NumSGPR = AMDGPUSubtarget::FIXED_SGPR_COUNT_FOR_INIT_BUG; + } + + if (MFI->NumUserSGPRs > STM.getMaxNumUserSGPRs()) { + LLVMContext &Ctx = MF.getFunction()->getContext(); + Ctx.emitError("too many user SGPRs used"); + } + + ProgInfo.VGPRBlocks = (ProgInfo.NumVGPR - 1) / 4; + ProgInfo.SGPRBlocks = (ProgInfo.NumSGPR - 1) / 8; + // Set the value to initialize FP_ROUND and FP_DENORM parts of the mode + // register. + ProgInfo.FloatMode = getFPMode(MF); + + // XXX: Not quite sure what this does, but sc seems to unset this. + ProgInfo.IEEEMode = 0; + + // Do not clamp NAN to 0. + ProgInfo.DX10Clamp = 0; + + const MachineFrameInfo *FrameInfo = MF.getFrameInfo(); + ProgInfo.ScratchSize = FrameInfo->estimateStackSize(MF); + + ProgInfo.FlatUsed = FlatUsed; + ProgInfo.VCCUsed = VCCUsed; + ProgInfo.CodeLen = CodeSize; + + unsigned LDSAlignShift; + if (STM.getGeneration() < AMDGPUSubtarget::SEA_ISLANDS) { + // LDS is allocated in 64 dword blocks. + LDSAlignShift = 8; + } else { + // LDS is allocated in 128 dword blocks. + LDSAlignShift = 9; + } + + unsigned LDSSpillSize = MFI->LDSWaveSpillSize * + MFI->getMaximumWorkGroupSize(MF); + + ProgInfo.LDSSize = MFI->LDSSize + LDSSpillSize; + ProgInfo.LDSBlocks = + RoundUpToAlignment(ProgInfo.LDSSize, 1 << LDSAlignShift) >> LDSAlignShift; + + // Scratch is allocated in 256 dword blocks. + unsigned ScratchAlignShift = 10; + // We need to program the hardware with the amount of scratch memory that + // is used by the entire wave. ProgInfo.ScratchSize is the amount of + // scratch memory used per thread. + ProgInfo.ScratchBlocks = + RoundUpToAlignment(ProgInfo.ScratchSize * STM.getWavefrontSize(), + 1 << ScratchAlignShift) >> ScratchAlignShift; + + ProgInfo.ComputePGMRSrc1 = + S_00B848_VGPRS(ProgInfo.VGPRBlocks) | + S_00B848_SGPRS(ProgInfo.SGPRBlocks) | + S_00B848_PRIORITY(ProgInfo.Priority) | + S_00B848_FLOAT_MODE(ProgInfo.FloatMode) | + S_00B848_PRIV(ProgInfo.Priv) | + S_00B848_DX10_CLAMP(ProgInfo.DX10Clamp) | + S_00B848_DEBUG_MODE(ProgInfo.DebugMode) | + S_00B848_IEEE_MODE(ProgInfo.IEEEMode); + + // 0 = X, 1 = XY, 2 = XYZ + unsigned TIDIGCompCnt = 0; + if (MFI->hasWorkItemIDZ()) + TIDIGCompCnt = 2; + else if (MFI->hasWorkItemIDY()) + TIDIGCompCnt = 1; + + ProgInfo.ComputePGMRSrc2 = + S_00B84C_SCRATCH_EN(ProgInfo.ScratchBlocks > 0) | + S_00B84C_USER_SGPR(MFI->getNumUserSGPRs()) | + S_00B84C_TGID_X_EN(MFI->hasWorkGroupIDX()) | + S_00B84C_TGID_Y_EN(MFI->hasWorkGroupIDY()) | + S_00B84C_TGID_Z_EN(MFI->hasWorkGroupIDZ()) | + S_00B84C_TG_SIZE_EN(MFI->hasWorkGroupInfo()) | + S_00B84C_TIDIG_COMP_CNT(TIDIGCompCnt) | + S_00B84C_EXCP_EN_MSB(0) | + S_00B84C_LDS_SIZE(ProgInfo.LDSBlocks) | + S_00B84C_EXCP_EN(0); +} + +static unsigned getRsrcReg(unsigned ShaderType) { + switch (ShaderType) { + default: // Fall through + case ShaderType::COMPUTE: return R_00B848_COMPUTE_PGM_RSRC1; + case ShaderType::GEOMETRY: return R_00B228_SPI_SHADER_PGM_RSRC1_GS; + case ShaderType::PIXEL: return R_00B028_SPI_SHADER_PGM_RSRC1_PS; + case ShaderType::VERTEX: return R_00B128_SPI_SHADER_PGM_RSRC1_VS; + } +} + +void AMDGPUAsmPrinter::EmitProgramInfoSI(const MachineFunction &MF, + const SIProgramInfo &KernelInfo) { + const AMDGPUSubtarget &STM = MF.getSubtarget<AMDGPUSubtarget>(); + const SIMachineFunctionInfo *MFI = MF.getInfo<SIMachineFunctionInfo>(); + unsigned RsrcReg = getRsrcReg(MFI->getShaderType()); + + if (MFI->getShaderType() == ShaderType::COMPUTE) { + OutStreamer->EmitIntValue(R_00B848_COMPUTE_PGM_RSRC1, 4); + + OutStreamer->EmitIntValue(KernelInfo.ComputePGMRSrc1, 4); + + OutStreamer->EmitIntValue(R_00B84C_COMPUTE_PGM_RSRC2, 4); + OutStreamer->EmitIntValue(KernelInfo.ComputePGMRSrc2, 4); + + OutStreamer->EmitIntValue(R_00B860_COMPUTE_TMPRING_SIZE, 4); + OutStreamer->EmitIntValue(S_00B860_WAVESIZE(KernelInfo.ScratchBlocks), 4); + + // TODO: Should probably note flat usage somewhere. SC emits a "FlatPtr32 = + // 0" comment but I don't see a corresponding field in the register spec. + } else { + OutStreamer->EmitIntValue(RsrcReg, 4); + OutStreamer->EmitIntValue(S_00B028_VGPRS(KernelInfo.VGPRBlocks) | + S_00B028_SGPRS(KernelInfo.SGPRBlocks), 4); + if (STM.isVGPRSpillingEnabled(MFI)) { + OutStreamer->EmitIntValue(R_0286E8_SPI_TMPRING_SIZE, 4); + OutStreamer->EmitIntValue(S_0286E8_WAVESIZE(KernelInfo.ScratchBlocks), 4); + } + } + + if (MFI->getShaderType() == ShaderType::PIXEL) { + OutStreamer->EmitIntValue(R_00B02C_SPI_SHADER_PGM_RSRC2_PS, 4); + OutStreamer->EmitIntValue(S_00B02C_EXTRA_LDS_SIZE(KernelInfo.LDSBlocks), 4); + OutStreamer->EmitIntValue(R_0286CC_SPI_PS_INPUT_ENA, 4); + OutStreamer->EmitIntValue(MFI->PSInputEna, 4); + OutStreamer->EmitIntValue(R_0286D0_SPI_PS_INPUT_ADDR, 4); + OutStreamer->EmitIntValue(MFI->getPSInputAddr(), 4); + } +} + +void AMDGPUAsmPrinter::EmitAmdKernelCodeT(const MachineFunction &MF, + const SIProgramInfo &KernelInfo) const { + const SIMachineFunctionInfo *MFI = MF.getInfo<SIMachineFunctionInfo>(); + const AMDGPUSubtarget &STM = MF.getSubtarget<AMDGPUSubtarget>(); + amd_kernel_code_t header; + + AMDGPU::initDefaultAMDKernelCodeT(header, STM.getFeatureBits()); + + header.compute_pgm_resource_registers = + KernelInfo.ComputePGMRSrc1 | + (KernelInfo.ComputePGMRSrc2 << 32); + header.code_properties = AMD_CODE_PROPERTY_IS_PTR64; + + if (MFI->hasPrivateSegmentBuffer()) { + header.code_properties |= + AMD_CODE_PROPERTY_ENABLE_SGPR_PRIVATE_SEGMENT_BUFFER; + } + + if (MFI->hasDispatchPtr()) + header.code_properties |= AMD_CODE_PROPERTY_ENABLE_SGPR_DISPATCH_PTR; + + if (MFI->hasQueuePtr()) + header.code_properties |= AMD_CODE_PROPERTY_ENABLE_SGPR_QUEUE_PTR; + + if (MFI->hasKernargSegmentPtr()) + header.code_properties |= AMD_CODE_PROPERTY_ENABLE_SGPR_KERNARG_SEGMENT_PTR; + + if (MFI->hasDispatchID()) + header.code_properties |= AMD_CODE_PROPERTY_ENABLE_SGPR_DISPATCH_ID; + + if (MFI->hasFlatScratchInit()) + header.code_properties |= AMD_CODE_PROPERTY_ENABLE_SGPR_FLAT_SCRATCH_INIT; + + // TODO: Private segment size + + if (MFI->hasGridWorkgroupCountX()) { + header.code_properties |= + AMD_CODE_PROPERTY_ENABLE_SGPR_GRID_WORKGROUP_COUNT_X; + } + + if (MFI->hasGridWorkgroupCountY()) { + header.code_properties |= + AMD_CODE_PROPERTY_ENABLE_SGPR_GRID_WORKGROUP_COUNT_Y; + } + + if (MFI->hasGridWorkgroupCountZ()) { + header.code_properties |= + AMD_CODE_PROPERTY_ENABLE_SGPR_GRID_WORKGROUP_COUNT_Z; + } + + if (MFI->hasDispatchPtr()) + header.code_properties |= AMD_CODE_PROPERTY_ENABLE_SGPR_DISPATCH_PTR; + + if (STM.isXNACKEnabled()) + header.code_properties |= AMD_CODE_PROPERTY_IS_XNACK_SUPPORTED; + + header.kernarg_segment_byte_size = MFI->ABIArgOffset; + header.wavefront_sgpr_count = KernelInfo.NumSGPR; + header.workitem_vgpr_count = KernelInfo.NumVGPR; + header.workitem_private_segment_byte_size = KernelInfo.ScratchSize; + header.workgroup_group_segment_byte_size = KernelInfo.LDSSize; + + AMDGPUTargetStreamer *TS = + static_cast<AMDGPUTargetStreamer *>(OutStreamer->getTargetStreamer()); + TS->EmitAMDKernelCodeT(header); +} + +bool AMDGPUAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo, + unsigned AsmVariant, + const char *ExtraCode, raw_ostream &O) { + if (ExtraCode && ExtraCode[0]) { + if (ExtraCode[1] != 0) + return true; // Unknown modifier. + + switch (ExtraCode[0]) { + default: + // See if this is a generic print operand + return AsmPrinter::PrintAsmOperand(MI, OpNo, AsmVariant, ExtraCode, O); + case 'r': + break; + } + } + + AMDGPUInstPrinter::printRegOperand(MI->getOperand(OpNo).getReg(), O, + *TM.getSubtargetImpl(*MF->getFunction())->getRegisterInfo()); + return false; +} |
