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