lib/Target/RISCV/RISCVTargetObjectFile.h

   1 //===-- RISCVTargetObjectFile.h - RISCV Object Info -*- C++ ---------*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #ifndef LLVM_LIB_TARGET_RISCV_RISCVTARGETOBJECTFILE_H
  10 #define LLVM_LIB_TARGET_RISCV_RISCVTARGETOBJECTFILE_H
  11
  12 #include "llvm/CodeGen/TargetLoweringObjectFileImpl.h"
  13
  14 namespace llvm {
  15 class RISCVTargetMachine;
  16
  17 /// This implementation is used for RISCV ELF targets.
  18 class RISCVELFTargetObjectFile : public TargetLoweringObjectFileELF {
  19   MCSection *SmallDataSection;
  20   MCSection *SmallBSSSection;
  21   unsigned SSThreshold = 8;
  22
  23 public:
  24   void Initialize(MCContext &Ctx, const TargetMachine &TM) override;
  25
  26   /// Return true if this global address should be placed into small data/bss
  27   /// section.
  28   bool isGlobalInSmallSection(const GlobalObject *GO,
  29                               const TargetMachine &TM) const;
  30
  31   MCSection *SelectSectionForGlobal(const GlobalObject *GO, SectionKind Kind,
  32                                     const TargetMachine &TM) const override;
  33
  34   /// Return true if this constant should be placed into small data section.
  35   bool isConstantInSmallSection(const DataLayout &DL, const Constant *CN) const;
  36
  37   MCSection *getSectionForConstant(const DataLayout &DL, SectionKind Kind,
  38                                    const Constant *C,
  39                                    unsigned &Align) const override;
  40
  41   void getModuleMetadata(Module &M) override;
  42
  43   bool isInSmallSection(uint64_t Size) const;
  44 };
  45
  46 } // end namespace llvm
  47
  48 #endif