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d89384c520
First, collect the register usage in each function, then apply the maximum register usage of all functions to functions with indirect calls. This is more accurate than guessing the maximum register usage without looking at the actual usage. As before, assume that indirect calls will hit a function in the current module. Differential Revision: https://reviews.llvm.org/D105839
144 lines
4.5 KiB
C++
144 lines
4.5 KiB
C++
//===-- AMDGPUAsmPrinter.h - Print AMDGPU assembly code ---------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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/// \file
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/// AMDGPU Assembly printer class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_AMDGPU_AMDGPUASMPRINTER_H
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#define LLVM_LIB_TARGET_AMDGPU_AMDGPUASMPRINTER_H
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#include "SIProgramInfo.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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struct amd_kernel_code_t;
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namespace llvm {
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class AMDGPUMachineFunction;
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struct AMDGPUResourceUsageAnalysis;
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class AMDGPUTargetStreamer;
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class MCCodeEmitter;
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class MCOperand;
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class GCNSubtarget;
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namespace AMDGPU {
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namespace HSAMD {
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class MetadataStreamer;
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}
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} // namespace AMDGPU
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namespace amdhsa {
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struct kernel_descriptor_t;
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}
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class AMDGPUAsmPrinter final : public AsmPrinter {
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private:
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void initializeTargetID(const Module &M);
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AMDGPUResourceUsageAnalysis *ResourceUsage;
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SIProgramInfo CurrentProgramInfo;
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std::unique_ptr<AMDGPU::HSAMD::MetadataStreamer> HSAMetadataStream;
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MCCodeEmitter *DumpCodeInstEmitter = nullptr;
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uint64_t getFunctionCodeSize(const MachineFunction &MF) const;
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void getSIProgramInfo(SIProgramInfo &Out, const MachineFunction &MF);
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void getAmdKernelCode(amd_kernel_code_t &Out, const SIProgramInfo &KernelInfo,
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const MachineFunction &MF) const;
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void findNumUsedRegistersSI(const MachineFunction &MF,
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unsigned &NumSGPR,
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unsigned &NumVGPR) const;
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/// Emit register usage information so that the GPU driver
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/// can correctly setup the GPU state.
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void EmitProgramInfoSI(const MachineFunction &MF,
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const SIProgramInfo &KernelInfo);
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void EmitPALMetadata(const MachineFunction &MF,
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const SIProgramInfo &KernelInfo);
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void emitPALFunctionMetadata(const MachineFunction &MF);
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void emitCommonFunctionComments(uint32_t NumVGPR,
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Optional<uint32_t> NumAGPR,
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uint32_t TotalNumVGPR,
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uint32_t NumSGPR,
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uint64_t ScratchSize,
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uint64_t CodeSize,
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const AMDGPUMachineFunction* MFI);
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uint16_t getAmdhsaKernelCodeProperties(
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const MachineFunction &MF) const;
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amdhsa::kernel_descriptor_t getAmdhsaKernelDescriptor(
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const MachineFunction &MF,
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const SIProgramInfo &PI) const;
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public:
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explicit AMDGPUAsmPrinter(TargetMachine &TM,
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std::unique_ptr<MCStreamer> Streamer);
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StringRef getPassName() const override;
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const MCSubtargetInfo* getGlobalSTI() const;
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AMDGPUTargetStreamer* getTargetStreamer() const;
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bool doFinalization(Module &M) override;
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bool runOnMachineFunction(MachineFunction &MF) override;
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/// Wrapper for MCInstLowering.lowerOperand() for the tblgen'erated
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/// pseudo lowering.
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bool lowerOperand(const MachineOperand &MO, MCOperand &MCOp) const;
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/// Lower the specified LLVM Constant to an MCExpr.
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/// The AsmPrinter::lowerConstantof does not know how to lower
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/// addrspacecast, therefore they should be lowered by this function.
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const MCExpr *lowerConstant(const Constant *CV) override;
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/// tblgen'erated driver function for lowering simple MI->MC pseudo
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/// instructions.
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bool emitPseudoExpansionLowering(MCStreamer &OutStreamer,
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const MachineInstr *MI);
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/// Implemented in AMDGPUMCInstLower.cpp
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void emitInstruction(const MachineInstr *MI) override;
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void emitFunctionBodyStart() override;
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void emitFunctionBodyEnd() override;
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void emitFunctionEntryLabel() override;
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void emitBasicBlockStart(const MachineBasicBlock &MBB) override;
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void emitGlobalVariable(const GlobalVariable *GV) override;
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void emitStartOfAsmFile(Module &M) override;
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void emitEndOfAsmFile(Module &M) override;
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bool isBlockOnlyReachableByFallthrough(
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const MachineBasicBlock *MBB) const override;
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bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
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const char *ExtraCode, raw_ostream &O) override;
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protected:
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void getAnalysisUsage(AnalysisUsage &AU) const override;
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std::vector<std::string> DisasmLines, HexLines;
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size_t DisasmLineMaxLen;
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};
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} // end namespace llvm
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#endif // LLVM_LIB_TARGET_AMDGPU_AMDGPUASMPRINTER_H
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