1// WebAssemblyAsmPrinter.h - WebAssembly implementation of AsmPrinter-*- 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_WEBASSEMBLY_WEBASSEMBLYASMPRINTER_H
10#define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYASMPRINTER_H
11
12#include "WebAssemblyMachineFunctionInfo.h"
13#include "WebAssemblySubtarget.h"
14#include "llvm/CodeGen/AsmPrinter.h"
15#include "llvm/MC/MCStreamer.h"
16#include "llvm/Target/TargetMachine.h"
17
18namespace llvm {
19class WebAssemblyTargetStreamer;
20
21class LLVM_LIBRARY_VISIBILITY WebAssemblyAsmPrinter final : public AsmPrinter {
22 const WebAssemblySubtarget *Subtarget;
23 const MachineRegisterInfo *MRI;
24 WebAssemblyFunctionInfo *MFI;
25 bool signaturesEmitted = false;
26
27public:
28 explicit WebAssemblyAsmPrinter(TargetMachine &TM,
29 std::unique_ptr<MCStreamer> Streamer)
30 : AsmPrinter(TM, std::move(Streamer)), Subtarget(nullptr), MRI(nullptr),
31 MFI(nullptr) {}
32
33 StringRef getPassName() const override {
34 return "WebAssembly Assembly Printer";
35 }
36
37 const WebAssemblySubtarget &getSubtarget() const { return *Subtarget; }
38
39 //===------------------------------------------------------------------===//
40 // MachineFunctionPass Implementation.
41 //===------------------------------------------------------------------===//
42
43 bool runOnMachineFunction(MachineFunction &MF) override {
44 Subtarget = &MF.getSubtarget<WebAssemblySubtarget>();
45 MRI = &MF.getRegInfo();
46 MFI = MF.getInfo<WebAssemblyFunctionInfo>();
47 return AsmPrinter::runOnMachineFunction(MF);
48 }
49
50 //===------------------------------------------------------------------===//
51 // AsmPrinter Implementation.
52 //===------------------------------------------------------------------===//
53
54 void emitEndOfAsmFile(Module &M) override;
55 void EmitProducerInfo(Module &M);
56 void EmitTargetFeatures(Module &M);
57 void EmitFunctionAttributes(Module &M);
58 void emitSymbolType(const MCSymbolWasm *Sym);
59 void emitGlobalVariable(const GlobalVariable *GV) override;
60 void emitJumpTableInfo() override;
61 void emitConstantPool() override;
62 void emitFunctionBodyStart() override;
63 void emitInstruction(const MachineInstr *MI) override;
64 bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
65 const char *ExtraCode, raw_ostream &OS) override;
66 bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
67 const char *ExtraCode, raw_ostream &OS) override;
68
69 MVT getRegType(unsigned RegNo) const;
70 std::string regToString(const MachineOperand &MO);
71 WebAssemblyTargetStreamer *getTargetStreamer();
72 MCSymbolWasm *getMCSymbolForFunction(const Function *F, bool EnableEmEH,
73 wasm::WasmSignature *Sig,
74 bool &InvokeDetected);
75 MCSymbol *getOrCreateWasmSymbol(StringRef Name);
76 void emitDecls(const Module &M);
77};
78
79} // end namespace llvm
80
81#endif
82