1 //===-- RISCVISAUtils.h - RISC-V ISA Utilities ------------------*- C++ -*-===// 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 // Utilities shared by TableGen and RISCVISAInfo. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_SUPPORT_RISCVISAUTILS_H 14 #define LLVM_SUPPORT_RISCVISAUTILS_H 15 16 #include "llvm/ADT/StringRef.h" 17 #include "llvm/Support/Compiler.h" 18 #include <map> 19 #include <string> 20 21 namespace llvm { 22 23 namespace RISCVISAUtils { 24 constexpr StringLiteral AllStdExts = "mafdqlcbkjtpvnh"; 25 26 /// Represents the major and version number components of a RISC-V extension. 27 struct ExtensionVersion { 28 unsigned Major; 29 unsigned Minor; 30 }; 31 32 LLVM_ABI bool compareExtension(const std::string &LHS, const std::string &RHS); 33 34 /// Helper class for OrderedExtensionMap. 35 struct ExtensionComparator { operatorExtensionComparator36 bool operator()(const std::string &LHS, const std::string &RHS) const { 37 return compareExtension(LHS, RHS); 38 } 39 }; 40 41 /// OrderedExtensionMap is std::map, it's specialized to keep entries 42 /// in canonical order of extension. 43 typedef std::map<std::string, ExtensionVersion, ExtensionComparator> 44 OrderedExtensionMap; 45 46 } // namespace RISCVISAUtils 47 48 } // namespace llvm 49 50 #endif 51