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//===-- WebAssemblyAsmPrinter.cpp - WebAssembly LLVM assembly writer ------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// \brief This file contains a printer that converts from our internal
/// representation of machine-dependent LLVM code to the WebAssembly assembly
/// language.
///
//===----------------------------------------------------------------------===//
#include "WebAssembly.h"
#include "WebAssemblyMachineFunctionInfo.h"
#include "WebAssemblyRegisterInfo.h"
#include "WebAssemblySubtarget.h"
#include "InstPrinter/WebAssemblyInstPrinter.h"
#include "MCTargetDesc/WebAssemblyMCTargetDesc.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DebugInfo.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
#define DEBUG_TYPE "asm-printer"
namespace {
class WebAssemblyAsmPrinter final : public AsmPrinter {
public:
WebAssemblyAsmPrinter(TargetMachine &TM, std::unique_ptr<MCStreamer> Streamer)
: AsmPrinter(TM, std::move(Streamer)) {}
private:
const char *getPassName() const override {
return "WebAssembly Assembly Printer";
}
//===------------------------------------------------------------------===//
// MachineFunctionPass Implementation.
//===------------------------------------------------------------------===//
void getAnalysisUsage(AnalysisUsage &AU) const override {
AsmPrinter::getAnalysisUsage(AU);
}
bool runOnMachineFunction(MachineFunction &F) override {
return AsmPrinter::runOnMachineFunction(F);
}
//===------------------------------------------------------------------===//
// AsmPrinter Implementation.
//===------------------------------------------------------------------===//
void EmitInstruction(const MachineInstr *MI) override;
};
} // end anonymous namespace
//===----------------------------------------------------------------------===//
void WebAssemblyAsmPrinter::EmitInstruction(const MachineInstr *MI) {
SmallString<128> Str;
raw_svector_ostream OS(Str);
switch (MI->getOpcode()) {
default:
DEBUG(MI->print(dbgs()));
llvm_unreachable("Unhandled instruction");
break;
}
OutStreamer->EmitRawText(OS.str());
}
// Force static initialization.
extern "C" void LLVMInitializeWebAssemblyAsmPrinter() {
RegisterAsmPrinter<WebAssemblyAsmPrinter> X(TheWebAssemblyTarget32);
RegisterAsmPrinter<WebAssemblyAsmPrinter> Y(TheWebAssemblyTarget64);
}
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