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// WebAssemblyAsmPrinter.h - WebAssembly implementation of AsmPrinter-*- C++ -*-
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYASMPRINTER_H
#define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYASMPRINTER_H
#include "WebAssemblyMachineFunctionInfo.h"
#include "WebAssemblySubtarget.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/Target/TargetMachine.h"
namespace llvm {
class WebAssemblyTargetStreamer;
class LLVM_LIBRARY_VISIBILITY WebAssemblyAsmPrinter final : public AsmPrinter {
const WebAssemblySubtarget *Subtarget;
const MachineRegisterInfo *MRI;
WebAssemblyFunctionInfo *MFI;
// TODO: Do the uniquing of Signatures here instead of ObjectFileWriter?
std::vector<std::unique_ptr<wasm::WasmSignature>> Signatures;
std::vector<std::unique_ptr<std::string>> Names;
bool signaturesEmitted = false;
StringRef storeName(StringRef Name) {
std::unique_ptr<std::string> N = std::make_unique<std::string>(Name);
Names.push_back(std::move(N));
return *Names.back();
}
public:
explicit WebAssemblyAsmPrinter(TargetMachine &TM,
std::unique_ptr<MCStreamer> Streamer)
: AsmPrinter(TM, std::move(Streamer)), Subtarget(nullptr), MRI(nullptr),
MFI(nullptr) {}
StringRef getPassName() const override {
return "WebAssembly Assembly Printer";
}
const WebAssemblySubtarget &getSubtarget() const { return *Subtarget; }
void addSignature(std::unique_ptr<wasm::WasmSignature> &&Sig) {
Signatures.push_back(std::move(Sig));
}
//===------------------------------------------------------------------===//
// MachineFunctionPass Implementation.
//===------------------------------------------------------------------===//
bool runOnMachineFunction(MachineFunction &MF) override {
Subtarget = &MF.getSubtarget<WebAssemblySubtarget>();
MRI = &MF.getRegInfo();
MFI = MF.getInfo<WebAssemblyFunctionInfo>();
return AsmPrinter::runOnMachineFunction(MF);
}
//===------------------------------------------------------------------===//
// AsmPrinter Implementation.
//===------------------------------------------------------------------===//
void emitEndOfAsmFile(Module &M) override;
void EmitProducerInfo(Module &M);
void EmitTargetFeatures(Module &M);
void emitSymbolType(const MCSymbolWasm *Sym);
void emitGlobalVariable(const GlobalVariable *GV) override;
void emitJumpTableInfo() override;
void emitConstantPool() override;
void emitFunctionBodyStart() override;
void emitInstruction(const MachineInstr *MI) override;
bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
const char *ExtraCode, raw_ostream &OS) override;
bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
const char *ExtraCode, raw_ostream &OS) override;
MVT getRegType(unsigned RegNo) const;
std::string regToString(const MachineOperand &MO);
WebAssemblyTargetStreamer *getTargetStreamer();
MCSymbolWasm *getMCSymbolForFunction(const Function *F, bool EnableEmEH,
wasm::WasmSignature *Sig,
bool &InvokeDetected);
MCSymbol *getOrCreateWasmSymbol(StringRef Name);
void emitDecls(const Module &M);
};
} // end namespace llvm
#endif
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