forked from OSchip/llvm-project
45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
//===- WebAssemblyStackifierEmitter.cpp - Stackifier cases ------*- C++ -*-===//
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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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// This file emits the switch statement cases to translate WebAssembly
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// instructions to their stack forms.
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//
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//===----------------------------------------------------------------------===//
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#include "WebAssemblyDisassemblerEmitter.h"
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#include "llvm/TableGen/Record.h"
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namespace llvm {
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// Find all register WebAssembly instructions and their corresponding stack
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// instructions. For each pair, emit a switch case of the form
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//
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// case WebAssembly::RegisterInstr: return WebAssembly::StackInstr;
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//
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// For example,
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//
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// case WebAssembly::ADD_I32: return WebAssembly::ADD_I32_S;
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//
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// This is useful for converting instructions from their register form to their
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// equivalent stack form.
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void EmitWebAssemblyStackifier(RecordKeeper &RK, raw_ostream &OS) {
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Record *InstrClass = RK.getClass("WebAssemblyInst");
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for (auto &RecordPair : RK.getDefs()) {
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if (!RecordPair.second->isSubClassOf(InstrClass))
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continue;
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bool IsStackBased = RecordPair.second->getValueAsBit("StackBased");
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if (IsStackBased)
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continue;
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OS << " case WebAssembly::" << RecordPair.first << ": return "
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<< "WebAssembly::" << RecordPair.first << "_S;\n";
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}
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}
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} // namespace llvm
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