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			601 lines
		
	
	
		
			23 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			601 lines
		
	
	
		
			23 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
//===-- AMDGPUAsmPrinter.cpp - AMDGPU Assebly printer  --------------------===//
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//
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//                     The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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/// \file
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///
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/// The AMDGPUAsmPrinter is used to print both assembly string and also binary
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/// code.  When passed an MCAsmStreamer it prints assembly and when passed
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/// an MCObjectStreamer it outputs binary code.
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//
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//===----------------------------------------------------------------------===//
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//
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#include "AMDGPUAsmPrinter.h"
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#include "InstPrinter/AMDGPUInstPrinter.h"
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#include "AMDGPU.h"
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#include "AMDKernelCodeT.h"
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#include "AMDGPUSubtarget.h"
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#include "R600Defines.h"
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#include "R600MachineFunctionInfo.h"
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#include "R600RegisterInfo.h"
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#include "SIDefines.h"
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#include "SIMachineFunctionInfo.h"
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#include "SIRegisterInfo.h"
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#include "llvm/CodeGen/MachineFrameInfo.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCSectionELF.h"
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/Support/ELF.h"
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#include "llvm/Support/MathExtras.h"
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#include "llvm/Support/TargetRegistry.h"
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#include "llvm/Target/TargetLoweringObjectFile.h"
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using namespace llvm;
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// TODO: This should get the default rounding mode from the kernel. We just set
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// the default here, but this could change if the OpenCL rounding mode pragmas
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// are used.
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//
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// The denormal mode here should match what is reported by the OpenCL runtime
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// for the CL_FP_DENORM bit from CL_DEVICE_{HALF|SINGLE|DOUBLE}_FP_CONFIG, but
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// can also be override to flush with the -cl-denorms-are-zero compiler flag.
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//
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// AMD OpenCL only sets flush none and reports CL_FP_DENORM for double
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// precision, and leaves single precision to flush all and does not report
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// CL_FP_DENORM for CL_DEVICE_SINGLE_FP_CONFIG. Mesa's OpenCL currently reports
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// CL_FP_DENORM for both.
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//
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// FIXME: It seems some instructions do not support single precision denormals
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// regardless of the mode (exp_*_f32, rcp_*_f32, rsq_*_f32, rsq_*f32, sqrt_f32,
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// and sin_f32, cos_f32 on most parts).
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// We want to use these instructions, and using fp32 denormals also causes
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// instructions to run at the double precision rate for the device so it's
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// probably best to just report no single precision denormals.
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static uint32_t getFPMode(const MachineFunction &F) {
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  const AMDGPUSubtarget& ST = F.getSubtarget<AMDGPUSubtarget>();
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  // TODO: Is there any real use for the flush in only / flush out only modes?
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  uint32_t FP32Denormals =
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    ST.hasFP32Denormals() ? FP_DENORM_FLUSH_NONE : FP_DENORM_FLUSH_IN_FLUSH_OUT;
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  uint32_t FP64Denormals =
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    ST.hasFP64Denormals() ? FP_DENORM_FLUSH_NONE : FP_DENORM_FLUSH_IN_FLUSH_OUT;
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  return FP_ROUND_MODE_SP(FP_ROUND_ROUND_TO_NEAREST) |
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         FP_ROUND_MODE_DP(FP_ROUND_ROUND_TO_NEAREST) |
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         FP_DENORM_MODE_SP(FP32Denormals) |
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         FP_DENORM_MODE_DP(FP64Denormals);
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}
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static AsmPrinter *
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createAMDGPUAsmPrinterPass(TargetMachine &tm,
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                           std::unique_ptr<MCStreamer> &&Streamer) {
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  return new AMDGPUAsmPrinter(tm, std::move(Streamer));
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}
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extern "C" void LLVMInitializeAMDGPUAsmPrinter() {
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  TargetRegistry::RegisterAsmPrinter(TheAMDGPUTarget, createAMDGPUAsmPrinterPass);
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  TargetRegistry::RegisterAsmPrinter(TheGCNTarget, createAMDGPUAsmPrinterPass);
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}
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AMDGPUAsmPrinter::AMDGPUAsmPrinter(TargetMachine &TM,
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                                   std::unique_ptr<MCStreamer> Streamer)
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    : AsmPrinter(TM, std::move(Streamer)) {}
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void AMDGPUAsmPrinter::EmitEndOfAsmFile(Module &M) {
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  // This label is used to mark the end of the .text section.
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  const TargetLoweringObjectFile &TLOF = getObjFileLowering();
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  OutStreamer->SwitchSection(TLOF.getTextSection());
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  MCSymbol *EndOfTextLabel =
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      OutContext.getOrCreateSymbol(StringRef(END_OF_TEXT_LABEL_NAME));
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  OutStreamer->EmitLabel(EndOfTextLabel);
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}
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bool AMDGPUAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
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  // The starting address of all shader programs must be 256 bytes aligned.
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  MF.setAlignment(8);
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  SetupMachineFunction(MF);
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  MCContext &Context = getObjFileLowering().getContext();
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  MCSectionELF *ConfigSection =
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      Context.getELFSection(".AMDGPU.config", ELF::SHT_PROGBITS, 0);
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  OutStreamer->SwitchSection(ConfigSection);
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  const AMDGPUSubtarget &STM = MF.getSubtarget<AMDGPUSubtarget>();
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  SIProgramInfo KernelInfo;
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  if (STM.isAmdHsaOS()) {
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    getSIProgramInfo(KernelInfo, MF);
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    EmitAmdKernelCodeT(MF, KernelInfo);
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    OutStreamer->EmitCodeAlignment(2 << (MF.getAlignment() - 1));
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  } else if (STM.getGeneration() >= AMDGPUSubtarget::SOUTHERN_ISLANDS) {
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    getSIProgramInfo(KernelInfo, MF);
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    EmitProgramInfoSI(MF, KernelInfo);
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  } else {
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    EmitProgramInfoR600(MF);
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  }
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  DisasmLines.clear();
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  HexLines.clear();
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  DisasmLineMaxLen = 0;
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  EmitFunctionBody();
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  if (isVerbose()) {
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    MCSectionELF *CommentSection =
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        Context.getELFSection(".AMDGPU.csdata", ELF::SHT_PROGBITS, 0);
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    OutStreamer->SwitchSection(CommentSection);
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    if (STM.getGeneration() >= AMDGPUSubtarget::SOUTHERN_ISLANDS) {
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      OutStreamer->emitRawComment(" Kernel info:", false);
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      OutStreamer->emitRawComment(" codeLenInByte = " + Twine(KernelInfo.CodeLen),
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                                  false);
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      OutStreamer->emitRawComment(" NumSgprs: " + Twine(KernelInfo.NumSGPR),
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                                  false);
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      OutStreamer->emitRawComment(" NumVgprs: " + Twine(KernelInfo.NumVGPR),
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                                  false);
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      OutStreamer->emitRawComment(" FloatMode: " + Twine(KernelInfo.FloatMode),
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                                  false);
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      OutStreamer->emitRawComment(" IeeeMode: " + Twine(KernelInfo.IEEEMode),
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                                  false);
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      OutStreamer->emitRawComment(" ScratchSize: " + Twine(KernelInfo.ScratchSize),
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                                  false);
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    } else {
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      R600MachineFunctionInfo *MFI = MF.getInfo<R600MachineFunctionInfo>();
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      OutStreamer->emitRawComment(
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        Twine("SQ_PGM_RESOURCES:STACK_SIZE = " + Twine(MFI->StackSize)));
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    }
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  }
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  if (STM.dumpCode()) {
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    OutStreamer->SwitchSection(
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        Context.getELFSection(".AMDGPU.disasm", ELF::SHT_NOTE, 0));
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    for (size_t i = 0; i < DisasmLines.size(); ++i) {
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      std::string Comment(DisasmLineMaxLen - DisasmLines[i].size(), ' ');
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      Comment += " ; " + HexLines[i] + "\n";
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      OutStreamer->EmitBytes(StringRef(DisasmLines[i]));
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      OutStreamer->EmitBytes(StringRef(Comment));
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    }
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  }
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  return false;
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}
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void AMDGPUAsmPrinter::EmitProgramInfoR600(const MachineFunction &MF) {
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  unsigned MaxGPR = 0;
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  bool killPixel = false;
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  const AMDGPUSubtarget &STM = MF.getSubtarget<AMDGPUSubtarget>();
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  const R600RegisterInfo *RI =
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      static_cast<const R600RegisterInfo *>(STM.getRegisterInfo());
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  const R600MachineFunctionInfo *MFI = MF.getInfo<R600MachineFunctionInfo>();
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  for (const MachineBasicBlock &MBB : MF) {
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    for (const MachineInstr &MI : MBB) {
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      if (MI.getOpcode() == AMDGPU::KILLGT)
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        killPixel = true;
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      unsigned numOperands = MI.getNumOperands();
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      for (unsigned op_idx = 0; op_idx < numOperands; op_idx++) {
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        const MachineOperand &MO = MI.getOperand(op_idx);
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        if (!MO.isReg())
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          continue;
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        unsigned HWReg = RI->getEncodingValue(MO.getReg()) & 0xff;
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        // Register with value > 127 aren't GPR
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        if (HWReg > 127)
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          continue;
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        MaxGPR = std::max(MaxGPR, HWReg);
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      }
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    }
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  }
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  unsigned RsrcReg;
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  if (STM.getGeneration() >= AMDGPUSubtarget::EVERGREEN) {
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    // Evergreen / Northern Islands
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    switch (MFI->getShaderType()) {
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    default: // Fall through
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    case ShaderType::COMPUTE:  RsrcReg = R_0288D4_SQ_PGM_RESOURCES_LS; break;
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    case ShaderType::GEOMETRY: RsrcReg = R_028878_SQ_PGM_RESOURCES_GS; break;
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    case ShaderType::PIXEL:    RsrcReg = R_028844_SQ_PGM_RESOURCES_PS; break;
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    case ShaderType::VERTEX:   RsrcReg = R_028860_SQ_PGM_RESOURCES_VS; break;
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    }
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  } else {
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    // R600 / R700
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    switch (MFI->getShaderType()) {
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    default: // Fall through
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    case ShaderType::GEOMETRY: // Fall through
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    case ShaderType::COMPUTE:  // Fall through
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    case ShaderType::VERTEX:   RsrcReg = R_028868_SQ_PGM_RESOURCES_VS; break;
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    case ShaderType::PIXEL:    RsrcReg = R_028850_SQ_PGM_RESOURCES_PS; break;
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    }
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  }
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  OutStreamer->EmitIntValue(RsrcReg, 4);
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  OutStreamer->EmitIntValue(S_NUM_GPRS(MaxGPR + 1) |
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                           S_STACK_SIZE(MFI->StackSize), 4);
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  OutStreamer->EmitIntValue(R_02880C_DB_SHADER_CONTROL, 4);
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  OutStreamer->EmitIntValue(S_02880C_KILL_ENABLE(killPixel), 4);
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  if (MFI->getShaderType() == ShaderType::COMPUTE) {
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    OutStreamer->EmitIntValue(R_0288E8_SQ_LDS_ALLOC, 4);
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    OutStreamer->EmitIntValue(RoundUpToAlignment(MFI->LDSSize, 4) >> 2, 4);
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  }
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}
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void AMDGPUAsmPrinter::getSIProgramInfo(SIProgramInfo &ProgInfo,
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                                        const MachineFunction &MF) const {
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  const AMDGPUSubtarget &STM = MF.getSubtarget<AMDGPUSubtarget>();
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  const SIMachineFunctionInfo *MFI = MF.getInfo<SIMachineFunctionInfo>();
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  uint64_t CodeSize = 0;
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  unsigned MaxSGPR = 0;
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  unsigned MaxVGPR = 0;
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  bool VCCUsed = false;
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  bool FlatUsed = false;
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  const SIRegisterInfo *RI =
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      static_cast<const SIRegisterInfo *>(STM.getRegisterInfo());
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  for (const MachineBasicBlock &MBB : MF) {
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    for (const MachineInstr &MI : MBB) {
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      // TODO: CodeSize should account for multiple functions.
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      CodeSize += MI.getDesc().Size;
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      unsigned numOperands = MI.getNumOperands();
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      for (unsigned op_idx = 0; op_idx < numOperands; op_idx++) {
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        const MachineOperand &MO = MI.getOperand(op_idx);
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        unsigned width = 0;
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        bool isSGPR = false;
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        if (!MO.isReg()) {
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          continue;
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        }
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        unsigned reg = MO.getReg();
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        if (reg == AMDGPU::VCC || reg == AMDGPU::VCC_LO ||
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	    reg == AMDGPU::VCC_HI) {
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          VCCUsed = true;
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          continue;
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        } else if (reg == AMDGPU::FLAT_SCR ||
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                   reg == AMDGPU::FLAT_SCR_LO ||
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                   reg == AMDGPU::FLAT_SCR_HI) {
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          FlatUsed = true;
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          continue;
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        }
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        switch (reg) {
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        default: break;
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        case AMDGPU::SCC:
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        case AMDGPU::EXEC:
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        case AMDGPU::M0:
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          continue;
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        }
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        if (AMDGPU::SReg_32RegClass.contains(reg)) {
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          isSGPR = true;
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          width = 1;
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        } else if (AMDGPU::VGPR_32RegClass.contains(reg)) {
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          isSGPR = false;
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          width = 1;
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        } else if (AMDGPU::SReg_64RegClass.contains(reg)) {
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          isSGPR = true;
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          width = 2;
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        } else if (AMDGPU::VReg_64RegClass.contains(reg)) {
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          isSGPR = false;
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          width = 2;
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        } else if (AMDGPU::VReg_96RegClass.contains(reg)) {
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          isSGPR = false;
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          width = 3;
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        } else if (AMDGPU::SReg_128RegClass.contains(reg)) {
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          isSGPR = true;
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          width = 4;
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        } else if (AMDGPU::VReg_128RegClass.contains(reg)) {
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          isSGPR = false;
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          width = 4;
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        } else if (AMDGPU::SReg_256RegClass.contains(reg)) {
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          isSGPR = true;
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          width = 8;
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        } else if (AMDGPU::VReg_256RegClass.contains(reg)) {
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          isSGPR = false;
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          width = 8;
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        } else if (AMDGPU::SReg_512RegClass.contains(reg)) {
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          isSGPR = true;
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          width = 16;
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        } else if (AMDGPU::VReg_512RegClass.contains(reg)) {
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          isSGPR = false;
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          width = 16;
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        } else {
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          llvm_unreachable("Unknown register class");
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        }
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        unsigned hwReg = RI->getEncodingValue(reg) & 0xff;
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        unsigned maxUsed = hwReg + width - 1;
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        if (isSGPR) {
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          MaxSGPR = maxUsed > MaxSGPR ? maxUsed : MaxSGPR;
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        } else {
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          MaxVGPR = maxUsed > MaxVGPR ? maxUsed : MaxVGPR;
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        }
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      }
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    }
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  }
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  if (VCCUsed)
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    MaxSGPR += 2;
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  if (FlatUsed)
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    MaxSGPR += 2;
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  // We found the maximum register index. They start at 0, so add one to get the
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  // number of registers.
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  ProgInfo.NumVGPR = MaxVGPR + 1;
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  ProgInfo.NumSGPR = MaxSGPR + 1;
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  if (STM.hasSGPRInitBug()) {
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    if (ProgInfo.NumSGPR > AMDGPUSubtarget::FIXED_SGPR_COUNT_FOR_INIT_BUG)
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      llvm_unreachable("Too many SGPRs used with the SGPR init bug");
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    ProgInfo.NumSGPR = AMDGPUSubtarget::FIXED_SGPR_COUNT_FOR_INIT_BUG;
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  }
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  ProgInfo.VGPRBlocks = (ProgInfo.NumVGPR - 1) / 4;
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  ProgInfo.SGPRBlocks = (ProgInfo.NumSGPR - 1) / 8;
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  // Set the value to initialize FP_ROUND and FP_DENORM parts of the mode
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  // register.
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  ProgInfo.FloatMode = getFPMode(MF);
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  // XXX: Not quite sure what this does, but sc seems to unset this.
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  ProgInfo.IEEEMode = 0;
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  // Do not clamp NAN to 0.
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  ProgInfo.DX10Clamp = 0;
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  const MachineFrameInfo *FrameInfo = MF.getFrameInfo();
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  ProgInfo.ScratchSize = FrameInfo->estimateStackSize(MF);
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  ProgInfo.FlatUsed = FlatUsed;
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  ProgInfo.VCCUsed = VCCUsed;
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  ProgInfo.CodeLen = CodeSize;
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  unsigned LDSAlignShift;
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  if (STM.getGeneration() < AMDGPUSubtarget::SEA_ISLANDS) {
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    // LDS is allocated in 64 dword blocks.
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    LDSAlignShift = 8;
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  } else {
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    // LDS is allocated in 128 dword blocks.
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    LDSAlignShift = 9;
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  }
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  unsigned LDSSpillSize = MFI->LDSWaveSpillSize *
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                          MFI->getMaximumWorkGroupSize(MF);
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  ProgInfo.LDSSize = MFI->LDSSize + LDSSpillSize;
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  ProgInfo.LDSBlocks =
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     RoundUpToAlignment(ProgInfo.LDSSize, 1 << LDSAlignShift) >> LDSAlignShift;
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  // Scratch is allocated in 256 dword blocks.
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  unsigned ScratchAlignShift = 10;
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  // We need to program the hardware with the amount of scratch memory that
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  // is used by the entire wave.  ProgInfo.ScratchSize is the amount of
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  // 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_IEEE_MODE(ProgInfo.DebugMode) |
 | 
						|
      S_00B848_IEEE_MODE(ProgInfo.IEEEMode);
 | 
						|
 | 
						|
  ProgInfo.ComputePGMRSrc2 =
 | 
						|
      S_00B84C_SCRATCH_EN(ProgInfo.ScratchBlocks > 0) |
 | 
						|
      S_00B84C_USER_SGPR(MFI->NumUserSGPRs) |
 | 
						|
      S_00B84C_TGID_X_EN(1) |
 | 
						|
      S_00B84C_TGID_Y_EN(1) |
 | 
						|
      S_00B84C_TGID_Z_EN(1) |
 | 
						|
      S_00B84C_TG_SIZE_EN(1) |
 | 
						|
      S_00B84C_TIDIG_COMP_CNT(2) |
 | 
						|
      S_00B84C_LDS_SIZE(ProgInfo.LDSBlocks);
 | 
						|
}
 | 
						|
 | 
						|
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->PSInputAddr, 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;
 | 
						|
 | 
						|
  memset(&header, 0, sizeof(header));
 | 
						|
 | 
						|
  header.amd_code_version_major = AMD_CODE_VERSION_MAJOR;
 | 
						|
  header.amd_code_version_minor = AMD_CODE_VERSION_MINOR;
 | 
						|
 | 
						|
  header.struct_byte_size = sizeof(amd_kernel_code_t);
 | 
						|
 | 
						|
  header.target_chip = STM.getAmdKernelCodeChipID();
 | 
						|
 | 
						|
  header.kernel_code_entry_byte_offset = (1ULL << MF.getAlignment());
 | 
						|
 | 
						|
  header.compute_pgm_resource_registers =
 | 
						|
      KernelInfo.ComputePGMRSrc1 |
 | 
						|
      (KernelInfo.ComputePGMRSrc2 << 32);
 | 
						|
 | 
						|
  // Code Properties:
 | 
						|
  header.code_properties = AMD_CODE_PROPERTY_ENABLE_SGPR_KERNARG_SEGMENT_PTR |
 | 
						|
                           AMD_CODE_PROPERTY_IS_PTR64;
 | 
						|
 | 
						|
  if (KernelInfo.FlatUsed)
 | 
						|
    header.code_properties |= AMD_CODE_PROPERTY_ENABLE_SGPR_FLAT_SCRATCH_INIT;
 | 
						|
 | 
						|
  if (KernelInfo.ScratchBlocks)
 | 
						|
    header.code_properties |= AMD_CODE_PROPERTY_ENABLE_SGPR_PRIVATE_SEGMENT_SIZE;
 | 
						|
 | 
						|
  header.workitem_private_segment_byte_size = KernelInfo.ScratchSize;
 | 
						|
  header.workgroup_group_segment_byte_size = KernelInfo.LDSSize;
 | 
						|
 | 
						|
  // MFI->ABIArgOffset is the number of bytes for the kernel arguments
 | 
						|
  // plus 36.  36 is the number of bytes reserved at the begining of the
 | 
						|
  // input buffer to store work-group size information.
 | 
						|
  // FIXME: We should be adding the size of the implicit arguments
 | 
						|
  // to this value.
 | 
						|
  header.kernarg_segment_byte_size = MFI->ABIArgOffset;
 | 
						|
 | 
						|
  header.wavefront_sgpr_count = KernelInfo.NumSGPR;
 | 
						|
  header.workitem_vgpr_count = KernelInfo.NumVGPR;
 | 
						|
 | 
						|
  // FIXME: What values do I put for these alignments
 | 
						|
  header.kernarg_segment_alignment = 0;
 | 
						|
  header.group_segment_alignment = 0;
 | 
						|
  header.private_segment_alignment = 0;
 | 
						|
 | 
						|
  header.code_type = 1; // HSA_EXT_CODE_KERNEL
 | 
						|
 | 
						|
  header.wavefront_size = STM.getWavefrontSize();
 | 
						|
 | 
						|
  MCSectionELF *VersionSection =
 | 
						|
      OutContext.getELFSection(".hsa.version", ELF::SHT_PROGBITS, 0);
 | 
						|
  OutStreamer->SwitchSection(VersionSection);
 | 
						|
  OutStreamer->EmitBytes(Twine("HSA Code Unit:" +
 | 
						|
                         Twine(header.hsail_version_major) + "." +
 | 
						|
                         Twine(header.hsail_version_minor) + ":" +
 | 
						|
                         "AMD:" +
 | 
						|
                         Twine(header.amd_code_version_major) + "." +
 | 
						|
                         Twine(header.amd_code_version_minor) +  ":" +
 | 
						|
                         "GFX8.1:0").str());
 | 
						|
 | 
						|
  OutStreamer->SwitchSection(getObjFileLowering().getTextSection());
 | 
						|
 | 
						|
  if (isVerbose()) {
 | 
						|
    OutStreamer->emitRawComment("amd_code_version_major = " +
 | 
						|
                                Twine(header.amd_code_version_major), false);
 | 
						|
    OutStreamer->emitRawComment("amd_code_version_minor = " +
 | 
						|
                                Twine(header.amd_code_version_minor), false);
 | 
						|
    OutStreamer->emitRawComment("struct_byte_size = " +
 | 
						|
                                Twine(header.struct_byte_size), false);
 | 
						|
    OutStreamer->emitRawComment("target_chip = " +
 | 
						|
                                Twine(header.target_chip), false);
 | 
						|
    OutStreamer->emitRawComment(" compute_pgm_rsrc1: " +
 | 
						|
                                Twine::utohexstr(KernelInfo.ComputePGMRSrc1),
 | 
						|
                                false);
 | 
						|
    OutStreamer->emitRawComment(" compute_pgm_rsrc2: " +
 | 
						|
                                Twine::utohexstr(KernelInfo.ComputePGMRSrc2),
 | 
						|
                                false);
 | 
						|
    OutStreamer->emitRawComment("enable_sgpr_private_segment_buffer = " +
 | 
						|
      Twine((bool)(header.code_properties &
 | 
						|
                   AMD_CODE_PROPERTY_ENABLE_SGPR_PRIVATE_SEGMENT_SIZE)), false);
 | 
						|
    OutStreamer->emitRawComment("enable_sgpr_kernarg_segment_ptr = " +
 | 
						|
      Twine((bool)(header.code_properties &
 | 
						|
                   AMD_CODE_PROPERTY_ENABLE_SGPR_KERNARG_SEGMENT_PTR)), false);
 | 
						|
    OutStreamer->emitRawComment("private_element_size = 2 ", false);
 | 
						|
    OutStreamer->emitRawComment("is_ptr64 = " +
 | 
						|
        Twine((bool)(header.code_properties & AMD_CODE_PROPERTY_IS_PTR64)), false);
 | 
						|
    OutStreamer->emitRawComment("workitem_private_segment_byte_size = " +
 | 
						|
                                Twine(header.workitem_private_segment_byte_size),
 | 
						|
                                false);
 | 
						|
    OutStreamer->emitRawComment("workgroup_group_segment_byte_size = " +
 | 
						|
                                Twine(header.workgroup_group_segment_byte_size),
 | 
						|
                                false);
 | 
						|
    OutStreamer->emitRawComment("gds_segment_byte_size = " +
 | 
						|
                                Twine(header.gds_segment_byte_size), false);
 | 
						|
    OutStreamer->emitRawComment("kernarg_segment_byte_size = " +
 | 
						|
                                Twine(header.kernarg_segment_byte_size), false);
 | 
						|
    OutStreamer->emitRawComment("wavefront_sgpr_count = " +
 | 
						|
                                Twine(header.wavefront_sgpr_count), false);
 | 
						|
    OutStreamer->emitRawComment("workitem_vgpr_count = " +
 | 
						|
                                Twine(header.workitem_vgpr_count), false);
 | 
						|
    OutStreamer->emitRawComment("code_type = " + Twine(header.code_type), false);
 | 
						|
    OutStreamer->emitRawComment("wavefront_size = " +
 | 
						|
                                Twine((int)header.wavefront_size), false);
 | 
						|
    OutStreamer->emitRawComment("optimization_level = " +
 | 
						|
                                Twine(header.optimization_level), false);
 | 
						|
    OutStreamer->emitRawComment("hsail_profile = " +
 | 
						|
                                Twine(header.hsail_profile), false);
 | 
						|
    OutStreamer->emitRawComment("hsail_machine_model = " +
 | 
						|
                                Twine(header.hsail_machine_model), false);
 | 
						|
    OutStreamer->emitRawComment("hsail_version_major = " +
 | 
						|
                                Twine(header.hsail_version_major), false);
 | 
						|
    OutStreamer->emitRawComment("hsail_version_minor = " +
 | 
						|
                                Twine(header.hsail_version_minor), false);
 | 
						|
  }
 | 
						|
 | 
						|
  OutStreamer->EmitBytes(StringRef((char*)&header, sizeof(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;
 | 
						|
}
 |