b7f97d3661
Small mergeable read only data was place on the sdata before, but it also means it lose the mergeable property, which means lose some code size optimization opportunity during link time.
61 lines
2.2 KiB
C++
61 lines
2.2 KiB
C++
//===-- RISCVTargetObjectFile.h - RISC-V Object Info ------------*- 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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#ifndef LLVM_LIB_TARGET_RISCV_RISCVTARGETOBJECTFILE_H
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#define LLVM_LIB_TARGET_RISCV_RISCVTARGETOBJECTFILE_H
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#include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
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namespace llvm {
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/// This implementation is used for RISC-V ELF targets.
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class RISCVELFTargetObjectFile : public TargetLoweringObjectFileELF {
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MCSection *SmallDataSection;
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MCSection *SmallRODataSection;
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MCSection *SmallROData4Section;
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MCSection *SmallROData8Section;
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MCSection *SmallROData16Section;
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MCSection *SmallROData32Section;
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MCSection *SmallBSSSection;
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unsigned SSThreshold = 8;
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public:
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unsigned getTextSectionAlignment() const override;
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void Initialize(MCContext &Ctx, const TargetMachine &TM) override;
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/// Return true if this global address should be placed into small data/bss
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/// section.
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bool isGlobalInSmallSection(const GlobalObject *GO,
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const TargetMachine &TM) const;
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MCSection *SelectSectionForGlobal(const GlobalObject *GO, SectionKind Kind,
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const TargetMachine &TM) const override;
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/// Return true if this constant should be placed into small data section.
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bool isConstantInSmallSection(const DataLayout &DL, const Constant *CN) const;
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MCSection *getSectionForConstant(const DataLayout &DL, SectionKind Kind,
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const Constant *C,
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Align &Alignment) const override;
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void getModuleMetadata(Module &M) override;
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bool isInSmallSection(uint64_t Size) const;
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const MCExpr *getIndirectSymViaGOTPCRel(const GlobalValue *GV,
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const MCSymbol *Sym,
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const MCValue &MV, int64_t Offset,
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MachineModuleInfo *MMI,
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MCStreamer &Streamer) const override;
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};
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} // end namespace llvm
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#endif
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