[Alignment][NFC] Support compile time constants
[llvm-core.git] / include / llvm / MC / MCWasmStreamer.h
blob2d7f2b9975c9d5293f55a8773177163daaaa656e
1 //===- MCWasmStreamer.h - MCStreamer Wasm Object File Interface -*- 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 //===----------------------------------------------------------------------===//
9 #ifndef LLVM_MC_MCWASMSTREAMER_H
10 #define LLVM_MC_MCWASMSTREAMER_H
12 #include "MCAsmBackend.h"
13 #include "MCCodeEmitter.h"
14 #include "llvm/ADT/SmallPtrSet.h"
15 #include "llvm/MC/MCDirectives.h"
16 #include "llvm/MC/MCObjectStreamer.h"
17 #include "llvm/MC/MCObjectWriter.h"
18 #include "llvm/MC/SectionKind.h"
19 #include "llvm/Support/DataTypes.h"
21 namespace llvm {
22 class MCAssembler;
23 class MCExpr;
24 class MCInst;
25 class raw_ostream;
27 class MCWasmStreamer : public MCObjectStreamer {
28 public:
29 MCWasmStreamer(MCContext &Context, std::unique_ptr<MCAsmBackend> TAB,
30 std::unique_ptr<MCObjectWriter> OW,
31 std::unique_ptr<MCCodeEmitter> Emitter)
32 : MCObjectStreamer(Context, std::move(TAB), std::move(OW),
33 std::move(Emitter)),
34 SeenIdent(false) {}
36 ~MCWasmStreamer() override;
38 /// state management
39 void reset() override {
40 SeenIdent = false;
41 MCObjectStreamer::reset();
44 /// \name MCStreamer Interface
45 /// @{
47 void ChangeSection(MCSection *Section, const MCExpr *Subsection) override;
48 void EmitAssemblerFlag(MCAssemblerFlag Flag) override;
49 void EmitThumbFunc(MCSymbol *Func) override;
50 void EmitWeakReference(MCSymbol *Alias, const MCSymbol *Symbol) override;
51 bool EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute) override;
52 void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) override;
53 void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
54 unsigned ByteAlignment) override;
56 void emitELFSize(MCSymbol *Symbol, const MCExpr *Value) override;
58 void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size,
59 unsigned ByteAlignment) override;
61 void EmitZerofill(MCSection *Section, MCSymbol *Symbol = nullptr,
62 uint64_t Size = 0, unsigned ByteAlignment = 0,
63 SMLoc Loc = SMLoc()) override;
64 void EmitTBSSSymbol(MCSection *Section, MCSymbol *Symbol, uint64_t Size,
65 unsigned ByteAlignment = 0) override;
66 void EmitValueImpl(const MCExpr *Value, unsigned Size,
67 SMLoc Loc = SMLoc()) override;
69 void EmitIdent(StringRef IdentString) override;
71 void EmitValueToAlignment(unsigned, int64_t, unsigned, unsigned) override;
73 void FinishImpl() override;
75 private:
76 void EmitInstToFragment(const MCInst &Inst, const MCSubtargetInfo &) override;
77 void EmitInstToData(const MCInst &Inst, const MCSubtargetInfo &) override;
79 /// Merge the content of the fragment \p EF into the fragment \p DF.
80 void mergeFragment(MCDataFragment *, MCDataFragment *);
82 bool SeenIdent;
85 } // end namespace llvm
87 #endif