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llvm-mirror/utils/TableGen/GlobalISel/CodeExpansions.h
Daniel Sanders 261abc0edd [gicombiner] Add a CodeExpander to handle C++ fragments with variable expansion
Summary:
This will handle expansion of C++ fragments in the declarative combiner
including custom predicates, and escapes into C++ to aid the migration
effort.

Fixed the -DLLVM_LINK_LLVM_DYLIB=ON using DISABLE_LLVM_LINK_LLVM_DYLIB when
creating the library. Apparently it automatically links to libLLVM.dylib
and we don't want that from tablegen.

Reviewers: bogner, volkan

Subscribers: mgorny, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D68288

> llvm-svn: 373551

llvm-svn: 373651
2019-10-03 19:13:39 +00:00

44 lines
1.4 KiB
C++

//===- 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) {
bool Inserted = Expansions.try_emplace(Name, Expansion).second;
assert(Inserted && "Declared variable twice");
(void)Inserted;
}
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