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// WebAssemblyAsmPrinter.h - WebAssembly implementation of AsmPrinter-*- C++ -*-
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#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 MCSymbol;
class WebAssemblyTargetStreamer;
class WebAssemblyMCInstLower;
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;
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 EmitJumpTableInfo() override;
void EmitConstantPool() override;
void EmitFunctionBodyStart() override;
void EmitInstruction(const MachineInstr *MI) override;
const MCExpr *lowerConstant(const Constant *CV) override;
bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
unsigned AsmVariant, const char *ExtraCode,
raw_ostream &OS) override;
bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
unsigned AsmVariant, const char *ExtraCode,
raw_ostream &OS) override;
MVT getRegType(unsigned RegNo) const;
std::string regToString(const MachineOperand &MO);
WebAssemblyTargetStreamer *getTargetStreamer();
};
} // end namespace llvm
#endif
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