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2d92e55433
Summary: - Unify mixed argument names (`Symbol` and `Sym`) to `Sym` - Changed `MCSymbolWasm*` argument of `emit***` functions to `const MCSymbolWasm*`. It seems not very intuitive that emit function in the streamer modifies symbol contents. - Moved empty function bodies to the header - clang-format Reviewers: aardappel, dschuff, sbc100 Subscribers: jgravelle-google, sunfish, llvm-commits Differential Revision: https://reviews.llvm.org/D55347 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@348816 91177308-0d34-0410-b5e6-96231b3b80d8
136 lines
4.3 KiB
C++
136 lines
4.3 KiB
C++
//==-- WebAssemblyTargetStreamer.cpp - WebAssembly Target Streamer Methods --=//
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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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/// This file defines WebAssembly-specific target streamer classes.
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/// These are for implementing support for target-specific assembly directives.
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///
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//===----------------------------------------------------------------------===//
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#include "WebAssemblyTargetStreamer.h"
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#include "InstPrinter/WebAssemblyInstPrinter.h"
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#include "WebAssemblyMCTargetDesc.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCSectionWasm.h"
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#include "llvm/MC/MCSubtargetInfo.h"
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#include "llvm/MC/MCSymbolWasm.h"
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#include "llvm/Support/Casting.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/FormattedStream.h"
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using namespace llvm;
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WebAssemblyTargetStreamer::WebAssemblyTargetStreamer(MCStreamer &S)
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: MCTargetStreamer(S) {}
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void WebAssemblyTargetStreamer::emitValueType(wasm::ValType Type) {
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Streamer.EmitIntValue(uint8_t(Type), 1);
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}
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WebAssemblyTargetAsmStreamer::WebAssemblyTargetAsmStreamer(
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MCStreamer &S, formatted_raw_ostream &OS)
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: WebAssemblyTargetStreamer(S), OS(OS) {}
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WebAssemblyTargetWasmStreamer::WebAssemblyTargetWasmStreamer(MCStreamer &S)
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: WebAssemblyTargetStreamer(S) {}
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static void printTypes(formatted_raw_ostream &OS,
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ArrayRef<wasm::ValType> Types) {
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bool First = true;
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for (auto Type : Types) {
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if (First)
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First = false;
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else
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OS << ", ";
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OS << WebAssembly::TypeToString(Type);
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}
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OS << '\n';
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}
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void WebAssemblyTargetAsmStreamer::emitLocal(ArrayRef<wasm::ValType> Types) {
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if (!Types.empty()) {
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OS << "\t.local \t";
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printTypes(OS, Types);
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}
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}
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void WebAssemblyTargetAsmStreamer::emitEndFunc() { OS << "\t.endfunc\n"; }
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void WebAssemblyTargetAsmStreamer::emitFunctionType(const MCSymbolWasm *Sym) {
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assert(Sym->isFunction());
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OS << "\t.functype\t" << Sym->getName() << " (";
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auto &Params = Sym->getSignature()->Params;
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for (auto &Ty : Params) {
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if (&Ty != &Params[0]) OS << ", ";
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OS << WebAssembly::TypeToString(Ty);
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}
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OS << ") -> (";
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auto &Returns = Sym->getSignature()->Returns;
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for (auto &Ty : Returns) {
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if (&Ty != &Returns[0]) OS << ", ";
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OS << WebAssembly::TypeToString(Ty);
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}
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OS << ")\n";
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}
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void WebAssemblyTargetAsmStreamer::emitGlobalType(const MCSymbolWasm *Sym) {
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assert(Sym->isGlobal());
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OS << "\t.globaltype\t" << Sym->getName() << ", " <<
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WebAssembly::TypeToString(
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static_cast<wasm::ValType>(Sym->getGlobalType().Type)) <<
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'\n';
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}
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void WebAssemblyTargetAsmStreamer::emitEventType(const MCSymbolWasm *Sym) {
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assert(Sym->isEvent());
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OS << "\t.eventtype\t" << Sym->getName();
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if (Sym->getSignature()->Returns.empty())
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OS << ", void";
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else {
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assert(Sym->getSignature()->Returns.size() == 1);
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OS << ", "
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<< WebAssembly::TypeToString(Sym->getSignature()->Returns.front());
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}
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for (auto Ty : Sym->getSignature()->Params)
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OS << ", " << WebAssembly::TypeToString(Ty);
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OS << '\n';
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}
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void WebAssemblyTargetAsmStreamer::emitImportModule(const MCSymbolWasm *Sym,
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StringRef ModuleName) {
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OS << "\t.import_module\t" << Sym->getName() << ", " << ModuleName << '\n';
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}
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void WebAssemblyTargetAsmStreamer::emitIndIdx(const MCExpr *Value) {
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OS << "\t.indidx \t" << *Value << '\n';
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}
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void WebAssemblyTargetWasmStreamer::emitLocal(ArrayRef<wasm::ValType> Types) {
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SmallVector<std::pair<wasm::ValType, uint32_t>, 4> Grouped;
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for (auto Type : Types) {
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if (Grouped.empty() || Grouped.back().first != Type)
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Grouped.push_back(std::make_pair(Type, 1));
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else
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++Grouped.back().second;
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}
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Streamer.EmitULEB128IntValue(Grouped.size());
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for (auto Pair : Grouped) {
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Streamer.EmitULEB128IntValue(Pair.second);
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emitValueType(Pair.first);
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}
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}
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void WebAssemblyTargetWasmStreamer::emitEndFunc() {
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llvm_unreachable(".end_func is not needed for direct wasm output");
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}
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void WebAssemblyTargetWasmStreamer::emitIndIdx(const MCExpr *Value) {
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llvm_unreachable(".indidx encoding not yet implemented");
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}
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