LLVM 17.0.0git
LoongArchAsmBackend.h
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1//===-- LoongArchAsmBackend.h - LoongArch Assembler Backend ---*- 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// This file defines the LoongArchAsmBackend class.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_LOONGARCH_MCTARGETDESC_LOONGARCHASMBACKEND_H
14#define LLVM_LIB_TARGET_LOONGARCH_MCTARGETDESC_LOONGARCHASMBACKEND_H
15
22
23namespace llvm {
24
26 const MCSubtargetInfo &STI;
27 uint8_t OSABI;
28 bool Is64Bit;
30
31public:
32 LoongArchAsmBackend(const MCSubtargetInfo &STI, uint8_t OSABI, bool Is64Bit,
34 : MCAsmBackend(support::little), STI(STI), OSABI(OSABI), Is64Bit(Is64Bit),
37
38 void applyFixup(const MCAssembler &Asm, const MCFixup &Fixup,
40 uint64_t Value, bool IsResolved,
41 const MCSubtargetInfo *STI) const override;
42
43 bool shouldForceRelocation(const MCAssembler &Asm, const MCFixup &Fixup,
44 const MCValue &Target) override;
45
48 const MCAsmLayout &Layout) const override {
49 return false;
50 }
51
52 unsigned getNumFixupKinds() const override {
54 }
55
56 std::optional<MCFixupKind> getFixupKind(StringRef Name) const override;
57
58 const MCFixupKindInfo &getFixupKindInfo(MCFixupKind Kind) const override;
59
61 const MCSubtargetInfo &STI) const override {}
62
64 const MCSubtargetInfo *STI) const override;
65
66 std::unique_ptr<MCObjectTargetWriter>
67 createObjectTargetWriter() const override;
69};
70} // end namespace llvm
71
72#endif // LLVM_LIB_TARGET_LOONGARCH_MCTARGETDESC_LOONGARCHASMBACKEND_H
static RegisterPass< DebugifyFunctionPass > DF("debugify-function", "Attach debug info to a function")
std::string Name
static LVOptions Options
Definition: LVOptions.cpp:25
PowerPC TLS Dynamic Call Fixup
raw_pwrite_stream & OS
void applyFixup(const MCAssembler &Asm, const MCFixup &Fixup, const MCValue &Target, MutableArrayRef< char > Data, uint64_t Value, bool IsResolved, const MCSubtargetInfo *STI) const override
Apply the Value for given Fixup into the provided data fragment, at the offset specified by the fixup...
std::unique_ptr< MCObjectTargetWriter > createObjectTargetWriter() const override
LoongArchAsmBackend(const MCSubtargetInfo &STI, uint8_t OSABI, bool Is64Bit, const MCTargetOptions &Options)
void relaxInstruction(MCInst &Inst, const MCSubtargetInfo &STI) const override
Relax the instruction in the given fragment to the next wider instruction.
std::optional< MCFixupKind > getFixupKind(StringRef Name) const override
Map a relocation name used in .reloc to a fixup kind.
bool shouldForceRelocation(const MCAssembler &Asm, const MCFixup &Fixup, const MCValue &Target) override
Hook to check if a relocation is needed for some target specific reason.
const MCFixupKindInfo & getFixupKindInfo(MCFixupKind Kind) const override
Get information on a fixup kind.
const MCTargetOptions & getTargetOptions() const
bool fixupNeedsRelaxation(const MCFixup &Fixup, uint64_t Value, const MCRelaxableFragment *DF, const MCAsmLayout &Layout) const override
Simple predicate for targets where !Resolved implies requiring relaxation.
unsigned getNumFixupKinds() const override
Get the number of target specific fixup kinds.
bool writeNopData(raw_ostream &OS, uint64_t Count, const MCSubtargetInfo *STI) const override
Write an (optimal) nop sequence of Count bytes to the given output.
Generic interface to target specific assembler backends.
Definition: MCAsmBackend.h:41
Encapsulates the layout of an assembly file at a particular point in time.
Definition: MCAsmLayout.h:28
Encode information on a single operation to perform on a byte sequence (e.g., an encoded instruction)...
Definition: MCFixup.h:71
Instances of this class represent a single low-level machine instruction.
Definition: MCInst.h:184
A relaxable fragment holds on to its MCInst, since it may need to be relaxed during the assembler lay...
Definition: MCFragment.h:270
Generic base class for all target subtargets.
This represents an "assembler immediate".
Definition: MCValue.h:36
MutableArrayRef - Represent a mutable reference to an array (0 or more elements consecutively in memo...
Definition: ArrayRef.h:305
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:50
Target - Wrapper for Target specific information.
LLVM Value Representation.
Definition: Value.h:74
This class implements an extremely fast bulk output stream that can only output to a stream.
Definition: raw_ostream.h:52
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
MCFixupKind
Extensible enumeration to represent the type of a fixup.
Definition: MCFixup.h:21
Target independent information on a fixup kind.