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https://github.com/c64scene-ar/llvm-6502.git
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55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
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//===- InstrEnumEmitter.cpp - Generate Instruction Set Enums --------------===//
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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 tablegen backend is responsible for emitting enums for each machine
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// instruction.
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//
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//===----------------------------------------------------------------------===//
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#include "InstrEnumEmitter.h"
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#include "CodeGenTarget.h"
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#include "Record.h"
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using namespace llvm;
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// runEnums - Print out enum values for all of the instructions.
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void InstrEnumEmitter::run(std::ostream &OS) {
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EmitSourceFileHeader("Target Instruction Enum Values", OS);
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OS << "namespace llvm {\n\n";
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CodeGenTarget Target;
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// We must emit the PHI opcode first...
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std::string Namespace;
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for (CodeGenTarget::inst_iterator II = Target.inst_begin(),
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E = Target.inst_end(); II != E; ++II) {
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if (II->second.Namespace != "TargetInstrInfo") {
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Namespace = II->second.Namespace;
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break;
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}
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}
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if (Namespace.empty()) {
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fprintf(stderr, "No instructions defined!\n");
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exit(1);
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}
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std::vector<const CodeGenInstruction*> NumberedInstructions;
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Target.getInstructionsByEnumValue(NumberedInstructions);
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OS << "namespace " << Namespace << " {\n";
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OS << " enum {\n";
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for (unsigned i = 0, e = NumberedInstructions.size(); i != e; ++i) {
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OS << " " << NumberedInstructions[i]->TheDef->getName()
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<< "\t= " << i << ",\n";
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}
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OS << " INSTRUCTION_LIST_END = " << NumberedInstructions.size() << "\n";
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OS << " };\n}\n";
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OS << "} // End llvm namespace \n";
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}
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