c6086dd550
This commit enables code generation for RISC-V targeting Mach-O: - Implement RISCVMachOTargetObjectFile::getNameWithPrefix method to handle Mach-O symbol naming requirements. - Use shouldAssumeDSOLocal() in RISCVTargetLowering::lowerGlobalAddress instead of isDSOLocal() for proper Mach-O semantics in global address lowering. Note that this is a NFC for RISCV when targeting ELF. - Add comprehensive tests for various relocation types (direct globals, GOT-based addressing, static vs PIC models). - Test function calls, tail calls, and various symbol reference patterns including addends and subtractions. This patch is based on code originally written by Tim Northover.
69 lines
2.5 KiB
C++
69 lines
2.5 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 = 0;
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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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class RISCVMachOTargetObjectFile : public TargetLoweringObjectFileMachO {
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public:
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RISCVMachOTargetObjectFile() {};
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void getNameWithPrefix(SmallVectorImpl<char> &OutName, const GlobalValue *GV,
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const TargetMachine &TM) const override;
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};
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} // end namespace llvm
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#endif
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