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//===- CodeExpansions.h - Record expansions for CodeExpander --------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
/// \file Record the expansions to use in a CodeExpander.
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/StringMap.h"
#ifndef LLVM_UTILS_TABLEGEN_CODEEXPANSIONS_H
#define LLVM_UTILS_TABLEGEN_CODEEXPANSIONS_H
namespace llvm {
class CodeExpansions {
public:
using const_iterator = StringMap<std::string>::const_iterator;
protected:
StringMap<std::string> Expansions;
public:
void declare(StringRef Name, StringRef Expansion) {
// Duplicates are not inserted. The expansion refers to different
// MachineOperands using the same virtual register.
Expansions.try_emplace(Name, Expansion);
}
void redeclare(StringRef Name, StringRef Expansion) {
Expansions[Name] = Expansion;
}
std::string lookup(StringRef Variable) const {
return Expansions.lookup(Variable);
}
const_iterator begin() const { return Expansions.begin(); }
const_iterator end() const { return Expansions.end(); }
const_iterator find(StringRef Variable) const {
return Expansions.find(Variable);
}
};
} // end namespace llvm
#endif // ifndef LLVM_UTILS_TABLEGEN_CODEEXPANSIONS_H
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