6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
115 lines
4.1 KiB
C++
115 lines
4.1 KiB
C++
//===-- RISCVISAInfo.h - RISC-V ISA Information -----------------*- C++ -*-===//
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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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#ifndef LLVM_SUPPORT_RISCVISAINFO_H
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#define LLVM_SUPPORT_RISCVISAINFO_H
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#include "llvm/ADT/StringMap.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/Error.h"
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#include "llvm/Support/RISCVISAUtils.h"
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#include <map>
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#include <set>
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#include <string>
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#include <vector>
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namespace llvm {
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class RISCVISAInfo {
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public:
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RISCVISAInfo(const RISCVISAInfo &) = delete;
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RISCVISAInfo &operator=(const RISCVISAInfo &) = delete;
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/// Parse RISC-V ISA info from arch string.
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/// If IgnoreUnknown is set, any unrecognised extension names or
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/// extensions with unrecognised versions will be silently dropped, except
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/// for the special case of the base 'i' and 'e' extensions, where the
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/// default version will be used (as ignoring the base is not possible).
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static llvm::Expected<std::unique_ptr<RISCVISAInfo>>
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parseArchString(StringRef Arch, bool EnableExperimentalExtension,
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bool ExperimentalExtensionVersionCheck = true);
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/// Parse RISC-V ISA info from an arch string that is already in normalized
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/// form (as defined in the psABI). Unlike parseArchString, this function
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/// will not error for unrecognized extension names or extension versions.
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static llvm::Expected<std::unique_ptr<RISCVISAInfo>>
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parseNormalizedArchString(StringRef Arch);
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/// Parse RISC-V ISA info from feature vector.
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static llvm::Expected<std::unique_ptr<RISCVISAInfo>>
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parseFeatures(unsigned XLen, const std::vector<std::string> &Features);
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static llvm::Expected<std::unique_ptr<RISCVISAInfo>>
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createFromExtMap(unsigned XLen,
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const RISCVISAUtils::OrderedExtensionMap &Exts);
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/// Convert RISC-V ISA info to a feature vector.
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std::vector<std::string> toFeatures(bool AddAllExtensions = false,
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bool IgnoreUnknown = true) const;
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const RISCVISAUtils::OrderedExtensionMap &getExtensions() const {
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return Exts;
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}
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unsigned getXLen() const { return XLen; }
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unsigned getFLen() const { return FLen; }
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unsigned getMinVLen() const { return MinVLen; }
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unsigned getMaxVLen() const { return 65536; }
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unsigned getMaxELen() const { return MaxELen; }
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unsigned getMaxELenFp() const { return MaxELenFp; }
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bool hasExtension(StringRef Ext) const;
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std::string toString() const;
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StringRef computeDefaultABI() const;
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static bool isSupportedExtensionFeature(StringRef Ext);
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static bool isSupportedExtension(StringRef Ext);
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static bool isSupportedExtensionWithVersion(StringRef Ext);
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static bool isSupportedExtension(StringRef Ext, unsigned MajorVersion,
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unsigned MinorVersion);
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static std::string getTargetFeatureForExtension(StringRef Ext);
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static void printSupportedExtensions(StringMap<StringRef> &DescMap);
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static void printEnabledExtensions(bool IsRV64,
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std::set<StringRef> &EnabledFeatureNames,
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StringMap<StringRef> &DescMap);
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/// Return the group id and bit position of __riscv_feature_bits. Returns
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/// <-1, -1> if not supported.
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static std::pair<int, int> getRISCVFeaturesBitsInfo(StringRef Ext);
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// The maximum value of the group ID obtained from getRISCVFeaturesBitsInfo.
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static constexpr unsigned FeatureBitSize = 2;
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private:
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RISCVISAInfo(unsigned XLen) : XLen(XLen) {}
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unsigned XLen;
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unsigned FLen = 0;
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unsigned MinVLen = 0;
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unsigned MaxELen = 0, MaxELenFp = 0;
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RISCVISAUtils::OrderedExtensionMap Exts;
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Error checkDependency();
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void updateImplication();
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void updateCombination();
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/// Update FLen, MinVLen, MaxELen, and MaxELenFp.
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void updateImpliedLengths();
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static llvm::Expected<std::unique_ptr<RISCVISAInfo>>
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postProcessAndChecking(std::unique_ptr<RISCVISAInfo> &&ISAInfo);
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};
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} // namespace llvm
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#endif
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