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71 lines
2.5 KiB
C++
71 lines
2.5 KiB
C++
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//===- IntrinsicEmitter.cpp - Generate intrinsic information --------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by Chris Lattner and is distributed under
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// the University of Illinois Open Source 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 emits information about intrinsic functions.
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//
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//===----------------------------------------------------------------------===//
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#include "IntrinsicEmitter.h"
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#include "Record.h"
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using namespace llvm;
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//===----------------------------------------------------------------------===//
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// CodeGenIntrinsic Implementation
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//===----------------------------------------------------------------------===//
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std::vector<CodeGenIntrinsic> llvm::LoadIntrinsics(const RecordKeeper &RC) {
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std::vector<Record*> I = RC.getAllDerivedDefinitions("Intrinsic");
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return std::vector<CodeGenIntrinsic>(I.begin(), I.end());
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}
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CodeGenIntrinsic::CodeGenIntrinsic(Record *R) {
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std::string DefName = R->getName();
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if (DefName.size() <= 4 ||
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std::string(DefName.begin(), DefName.begin()+4) != "int_")
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throw "Intrinsic '" + DefName + "' does not start with 'int_'!";
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EnumName = std::string(DefName.begin()+4, DefName.end());
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Name = R->getValueAsString("LLVMName");
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if (Name == "") {
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// If an explicit name isn't specified, derive one from the DefName.
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Name = "llvm.";
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for (unsigned i = 0, e = EnumName.size(); i != e; ++i)
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if (EnumName[i] == '_')
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Name += '.';
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else
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Name += EnumName[i];
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}
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}
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//===----------------------------------------------------------------------===//
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// IntrinsicEmitter Implementation
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//===----------------------------------------------------------------------===//
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void IntrinsicEmitter::run(std::ostream &OS) {
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EmitSourceFileHeader("Intrinsic Function Source Fragment", OS);
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std::vector<CodeGenIntrinsic> Ints = LoadIntrinsics(Records);
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// Emit the enum information.
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EmitEnumInfo(Ints, OS);
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}
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void IntrinsicEmitter::EmitEnumInfo(const std::vector<CodeGenIntrinsic> &Ints,
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std::ostream &OS) {
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OS << "#ifdef GET_INTRINSIC_ENUM_VALUES\n";
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for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
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OS << " " << Ints[i].EnumName;
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OS << ((i != e-1) ? ", " : " ");
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OS << std::string(40-Ints[i].EnumName.size(), ' ')
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<< "// " << Ints[i].Name << "\n";
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}
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OS << "#endif\n\n";
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}
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