63afb70503
See https://discourse.llvm.org/t/rfc-overhauled-mir-patterns-for-globalisel-combiners/72264 This is a complete overrhaul of the recently-added GlobalISel Match Table backend which adds support for MIR patterns for both match and apply patterns. Reviewed By: arsenm Differential Revision: https://reviews.llvm.org/D156315
48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
//===- CodeExpansions.h - Record expansions for CodeExpander --------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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/// \file Record the expansions to use in a CodeExpander.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/StringMap.h"
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#ifndef LLVM_UTILS_TABLEGEN_CODEEXPANSIONS_H
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#define LLVM_UTILS_TABLEGEN_CODEEXPANSIONS_H
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namespace llvm {
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class CodeExpansions {
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public:
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using const_iterator = StringMap<std::string>::const_iterator;
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protected:
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StringMap<std::string> Expansions;
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public:
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void declare(StringRef Name, StringRef Expansion) {
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// Duplicates are not inserted. The expansion refers to different
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// MachineOperands using the same virtual register.
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Expansions.try_emplace(Name, Expansion);
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}
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void redeclare(StringRef Name, StringRef Expansion) {
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Expansions[Name] = Expansion;
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}
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std::string lookup(StringRef Variable) const {
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return Expansions.lookup(Variable);
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}
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const_iterator begin() const { return Expansions.begin(); }
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const_iterator end() const { return Expansions.end(); }
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const_iterator find(StringRef Variable) const {
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return Expansions.find(Variable);
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}
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};
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} // end namespace llvm
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#endif // ifndef LLVM_UTILS_TABLEGEN_CODEEXPANSIONS_H
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