3e7eab0997
For the "C" Standard Extension/Zca, D45560 enabled 2-byte alignment for assembly output (e.g. `clang -S a.c`) and D102052 enabled 2-byte alignment for assembly input and object file output (e.g. `clang -c a.s`). This patch ports the behavior for code generation and object file output by adding RISCVELFTargetObjectFile::getTextSectionAlignment (e.g. `clang -c a.c`). Reviewed By: craig.topper Differential Revision: https://reviews.llvm.org/D150240
50 lines
1.7 KiB
C++
50 lines
1.7 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 *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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};
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} // end namespace llvm
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#endif
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