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 {
22public:
23 static char ID;
24
25private:
26 const WebAssemblySubtarget *Subtarget;
27 const MachineRegisterInfo *MRI;
28 WebAssemblyFunctionInfo *MFI;
29 bool signaturesEmitted = false;
30
31public:
32 explicit WebAssemblyAsmPrinter(TargetMachine &TM,
33 std::unique_ptr<MCStreamer> Streamer)
34 : AsmPrinter(TM, std::move(Streamer), ID), Subtarget(nullptr),
35 MRI(nullptr), MFI(nullptr) {}
36
37 StringRef getPassName() const override {
38 return "WebAssembly Assembly Printer";
39 }
40
41 const WebAssemblySubtarget &getSubtarget() const { return *Subtarget; }
42
43 //===------------------------------------------------------------------===//
44 // MachineFunctionPass Implementation.
45 //===------------------------------------------------------------------===//
46
47 bool runOnMachineFunction(MachineFunction &MF) override {
48 Subtarget = &MF.getSubtarget<WebAssemblySubtarget>();
49 MRI = &MF.getRegInfo();
50 MFI = MF.getInfo<WebAssemblyFunctionInfo>();
51 return AsmPrinter::runOnMachineFunction(MF);
52 }
53
54 //===------------------------------------------------------------------===//
55 // AsmPrinter Implementation.
56 //===------------------------------------------------------------------===//
57
58 void emitEndOfAsmFile(Module &M) override;
59 void EmitProducerInfo(Module &M);
60 void EmitTargetFeatures(Module &M);
61 void EmitFunctionAttributes(Module &M);
62 void emitSymbolType(const MCSymbolWasm *Sym);
63 void emitGlobalVariable(const GlobalVariable *GV) override;
64 void emitJumpTableInfo() override;
65 void emitConstantPool() override;
66 void emitFunctionBodyStart() override;
67 void emitInstruction(const MachineInstr *MI) override;
68 bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
69 const char *ExtraCode, raw_ostream &OS) override;
70 bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
71 const char *ExtraCode, raw_ostream &OS) override;
72
73 MVT getRegType(unsigned RegNo) const;
74 std::string regToString(const MachineOperand &MO);
75 WebAssemblyTargetStreamer *getTargetStreamer();
76 MCSymbolWasm *getMCSymbolForFunction(const Function *F, bool EnableEmEH,
77 wasm::WasmSignature *Sig,
78 bool &InvokeDetected);
79 MCSymbol *getOrCreateWasmSymbol(StringRef Name);
80 void emitDecls(const Module &M);
81};
82
83} // end namespace llvm
84
85#endif
86