| 1 | //===- CodeExpansions.h - Record expansions for CodeExpander --------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | // |
| 9 | /// \file Record the expansions to use in a CodeExpander. |
| 10 | // |
| 11 | //===----------------------------------------------------------------------===// |
| 12 | |
| 13 | #include "llvm/ADT/StringMap.h" |
| 14 | |
| 15 | #ifndef LLVM_UTILS_TABLEGEN_CODEEXPANSIONS_H |
| 16 | #define LLVM_UTILS_TABLEGEN_CODEEXPANSIONS_H |
| 17 | namespace llvm { |
| 18 | class CodeExpansions { |
| 19 | public: |
| 20 | using const_iterator = StringMap<std::string>::const_iterator; |
| 21 | |
| 22 | protected: |
| 23 | StringMap<std::string> Expansions; |
| 24 | |
| 25 | public: |
| 26 | void declare(StringRef Name, StringRef Expansion) { |
| 27 | // Duplicates are not inserted. The expansion refers to different |
| 28 | // MachineOperands using the same virtual register. |
| 29 | Expansions.try_emplace(Key: Name, Args&: Expansion); |
| 30 | } |
| 31 | |
| 32 | void redeclare(StringRef Name, StringRef Expansion) { |
| 33 | Expansions[Name] = Expansion; |
| 34 | } |
| 35 | |
| 36 | std::string lookup(StringRef Variable) const { |
| 37 | return Expansions.lookup(Key: Variable); |
| 38 | } |
| 39 | |
| 40 | const_iterator begin() const { return Expansions.begin(); } |
| 41 | const_iterator end() const { return Expansions.end(); } |
| 42 | const_iterator find(StringRef Variable) const { |
| 43 | return Expansions.find(Key: Variable); |
| 44 | } |
| 45 | }; |
| 46 | } // end namespace llvm |
| 47 | #endif // ifndef LLVM_UTILS_TABLEGEN_CODEEXPANSIONS_H |
| 48 |