| //===-- RISCVISAInfo.h - RISCV ISA Information ------------------*- C++ -*-===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_SUPPORT_RISCVISAINFO_H |
| #define LLVM_SUPPORT_RISCVISAINFO_H |
| |
| #include "llvm/ADT/StringRef.h" |
| #include "llvm/Support/Error.h" |
| |
| #include <map> |
| #include <string> |
| #include <vector> |
| |
| namespace llvm { |
| struct RISCVExtensionInfo { |
| std::string ExtName; |
| unsigned MajorVersion; |
| unsigned MinorVersion; |
| }; |
| |
| class RISCVISAInfo { |
| public: |
| RISCVISAInfo(const RISCVISAInfo &) = delete; |
| RISCVISAInfo &operator=(const RISCVISAInfo &) = delete; |
| |
| static bool compareExtension(const std::string &LHS, const std::string &RHS); |
| |
| /// Helper class for OrderedExtensionMap. |
| struct ExtensionComparator { |
| bool operator()(const std::string &LHS, const std::string &RHS) const { |
| return compareExtension(LHS, RHS); |
| } |
| }; |
| |
| /// OrderedExtensionMap is std::map, it's specialized to keep entries |
| /// in canonical order of extension. |
| typedef std::map<std::string, RISCVExtensionInfo, ExtensionComparator> |
| OrderedExtensionMap; |
| |
| RISCVISAInfo(unsigned XLen, OrderedExtensionMap &Exts) |
| : XLen(XLen), FLen(0), MinVLen(0), MaxELen(0), MaxELenFp(0), Exts(Exts) {} |
| |
| /// Parse RISCV ISA info from arch string. |
| static llvm::Expected<std::unique_ptr<RISCVISAInfo>> |
| parseArchString(StringRef Arch, bool EnableExperimentalExtension, |
| bool ExperimentalExtensionVersionCheck = true, |
| bool IgnoreUnknown = false); |
| |
| /// Parse RISCV ISA info from feature vector. |
| static llvm::Expected<std::unique_ptr<RISCVISAInfo>> |
| parseFeatures(unsigned XLen, const std::vector<std::string> &Features); |
| |
| /// Convert RISCV ISA info to a feature vector. |
| void toFeatures(std::vector<StringRef> &Features, |
| llvm::function_ref<StringRef(const Twine &)> StrAlloc, |
| bool AddAllExtensions) const; |
| |
| const OrderedExtensionMap &getExtensions() const { return Exts; }; |
| |
| unsigned getXLen() const { return XLen; }; |
| unsigned getFLen() const { return FLen; }; |
| unsigned getMinVLen() const { return MinVLen; } |
| unsigned getMaxVLen() const { return 65536; } |
| unsigned getMaxELen() const { return MaxELen; } |
| unsigned getMaxELenFp() const { return MaxELenFp; } |
| |
| bool hasExtension(StringRef Ext) const; |
| std::string toString() const; |
| std::vector<std::string> toFeatureVector() const; |
| StringRef computeDefaultABI() const; |
| |
| static bool isSupportedExtensionFeature(StringRef Ext); |
| static bool isSupportedExtension(StringRef Ext); |
| static bool isSupportedExtension(StringRef Ext, unsigned MajorVersion, |
| unsigned MinorVersion); |
| static llvm::Expected<std::unique_ptr<RISCVISAInfo>> |
| postProcessAndChecking(std::unique_ptr<RISCVISAInfo> &&ISAInfo); |
| |
| private: |
| RISCVISAInfo(unsigned XLen) |
| : XLen(XLen), FLen(0), MinVLen(0), MaxELen(0), MaxELenFp(0) {} |
| |
| unsigned XLen; |
| unsigned FLen; |
| unsigned MinVLen; |
| unsigned MaxELen, MaxELenFp; |
| |
| OrderedExtensionMap Exts; |
| |
| void addExtension(StringRef ExtName, unsigned MajorVersion, |
| unsigned MinorVersion); |
| |
| Error checkDependency(); |
| |
| void updateImplication(); |
| void updateCombination(); |
| void updateFLen(); |
| void updateMinVLen(); |
| void updateMaxELen(); |
| }; |
| |
| } // namespace llvm |
| |
| #endif |