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0ab2923b30
Renaming for some Emscripten EH functions has so far been done in wasm-emscripten-finalize tool in Binaryen. But recently we decided to make a compilation/linking path that does not rely on wasm-emscripten-finalize for modifications, so here we move that functionality to LLVM. Invoke wrappers are generated in LowerEmscriptenEHSjLj pass, but final wasm types are not available in the IR pass, we need to rename them at the end of the pipeline. This patch also removes uses of `emscripten_longjmp_jmpbuf` in LowerEmscriptenEHSjLj pass, replacing that with `emscripten_longjmp`. `emscripten_longjmp_jmpbuf` is lowered to `emscripten_longjmp`, but previously we generated calls to `emscripten_longjmp_jmpbuf` in LowerEmscriptenEHSjLj pass because it takes `jmp_buf*` instead of `i32`. But we were able use `ptrtoint` to make it use `emscripten_longjmp` directly here. Addresses: https://github.com/WebAssembly/binaryen/issues/3043 https://github.com/WebAssembly/binaryen/issues/3081 Companions: https://github.com/WebAssembly/binaryen/pull/3191 https://github.com/emscripten-core/emscripten/pull/12399 Reviewed By: dschuff, tlively, sbc100 Differential Revision: https://reviews.llvm.org/D88697
88 lines
3.3 KiB
C++
88 lines
3.3 KiB
C++
// WebAssemblyAsmPrinter.h - WebAssembly implementation of AsmPrinter-*- C++ -*-
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYASMPRINTER_H
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#define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYASMPRINTER_H
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#include "WebAssemblyMachineFunctionInfo.h"
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#include "WebAssemblySubtarget.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/Target/TargetMachine.h"
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namespace llvm {
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class WebAssemblyTargetStreamer;
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class LLVM_LIBRARY_VISIBILITY WebAssemblyAsmPrinter final : public AsmPrinter {
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const WebAssemblySubtarget *Subtarget;
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const MachineRegisterInfo *MRI;
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WebAssemblyFunctionInfo *MFI;
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// TODO: Do the uniquing of Signatures here instead of ObjectFileWriter?
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std::vector<std::unique_ptr<wasm::WasmSignature>> Signatures;
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std::vector<std::unique_ptr<std::string>> Names;
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StringRef storeName(StringRef Name) {
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std::unique_ptr<std::string> N = std::make_unique<std::string>(Name);
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Names.push_back(std::move(N));
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return *Names.back();
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}
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public:
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explicit WebAssemblyAsmPrinter(TargetMachine &TM,
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std::unique_ptr<MCStreamer> Streamer)
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: AsmPrinter(TM, std::move(Streamer)), Subtarget(nullptr), MRI(nullptr),
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MFI(nullptr) {}
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StringRef getPassName() const override {
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return "WebAssembly Assembly Printer";
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}
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const WebAssemblySubtarget &getSubtarget() const { return *Subtarget; }
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void addSignature(std::unique_ptr<wasm::WasmSignature> &&Sig) {
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Signatures.push_back(std::move(Sig));
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}
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//===------------------------------------------------------------------===//
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// MachineFunctionPass Implementation.
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//===------------------------------------------------------------------===//
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bool runOnMachineFunction(MachineFunction &MF) override {
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Subtarget = &MF.getSubtarget<WebAssemblySubtarget>();
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MRI = &MF.getRegInfo();
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MFI = MF.getInfo<WebAssemblyFunctionInfo>();
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return AsmPrinter::runOnMachineFunction(MF);
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}
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//===------------------------------------------------------------------===//
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// AsmPrinter Implementation.
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//===------------------------------------------------------------------===//
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void emitEndOfAsmFile(Module &M) override;
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void EmitProducerInfo(Module &M);
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void EmitTargetFeatures(Module &M);
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void emitJumpTableInfo() override;
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void emitConstantPool() override;
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void emitFunctionBodyStart() override;
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void emitInstruction(const MachineInstr *MI) override;
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bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
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const char *ExtraCode, raw_ostream &OS) override;
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bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
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const char *ExtraCode, raw_ostream &OS) override;
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MVT getRegType(unsigned RegNo) const;
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std::string regToString(const MachineOperand &MO);
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WebAssemblyTargetStreamer *getTargetStreamer();
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MCSymbolWasm *getMCSymbolForFunction(const Function *F, bool EnableEmEH,
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wasm::WasmSignature *Sig,
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bool &InvokeDetected);
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};
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} // end namespace llvm
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#endif
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