LLVM  16.0.0git
RISCVISAInfo.h
Go to the documentation of this file.
1 //===-- RISCVISAInfo.h - RISCV ISA Information ------*- 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 #ifndef LLVM_SUPPORT_RISCVISAINFO_H
10 #define LLVM_SUPPORT_RISCVISAINFO_H
11 
12 #include "llvm/ADT/StringRef.h"
13 #include "llvm/Support/Error.h"
14 
15 #include <map>
16 #include <string>
17 #include <vector>
18 
19 namespace llvm {
21  std::string ExtName;
22  unsigned MajorVersion;
23  unsigned MinorVersion;
24 };
25 
26 class RISCVISAInfo {
27 public:
28  RISCVISAInfo(const RISCVISAInfo &) = delete;
29  RISCVISAInfo &operator=(const RISCVISAInfo &) = delete;
30 
31  static bool compareExtension(const std::string &LHS, const std::string &RHS);
32 
33  /// Helper class for OrderedExtensionMap.
35  bool operator()(const std::string &LHS, const std::string &RHS) const {
36  return compareExtension(LHS, RHS);
37  }
38  };
39 
40  /// OrderedExtensionMap is std::map, it's specialized to keep entries
41  /// in canonical order of extension.
42  typedef std::map<std::string, RISCVExtensionInfo, ExtensionComparator>
44 
45  /// Parse RISCV ISA info from arch string.
47  parseArchString(StringRef Arch, bool EnableExperimentalExtension,
48  bool ExperimentalExtensionVersionCheck = true);
49 
50  /// Parse RISCV ISA info from feature vector.
52  parseFeatures(unsigned XLen, const std::vector<std::string> &Features);
53 
54  /// Convert RISCV ISA info to a feature vector.
55  void toFeatures(std::vector<StringRef> &Features,
56  std::function<StringRef(const Twine &)> StrAlloc) const;
57 
58  const OrderedExtensionMap &getExtensions() const { return Exts; };
59 
60  unsigned getXLen() const { return XLen; };
61  unsigned getFLen() const { return FLen; };
62  unsigned getMinVLen() const { return MinVLen; }
63  unsigned getMaxVLen() const { return 65536; }
64  unsigned getMaxELen() const { return MaxELen; }
65  unsigned getMaxELenFp() const { return MaxELenFp; }
66 
67  bool hasExtension(StringRef Ext) const;
68  std::string toString() const;
69  std::vector<std::string> toFeatureVector() const;
71 
73  static bool isSupportedExtension(StringRef Ext);
74  static bool isSupportedExtension(StringRef Ext, unsigned MajorVersion,
75  unsigned MinorVersion);
76 
77 private:
78  RISCVISAInfo(unsigned XLen)
79  : XLen(XLen), FLen(0), MinVLen(0), MaxELen(0), MaxELenFp(0) {}
80 
81  unsigned XLen;
82  unsigned FLen;
83  unsigned MinVLen;
84  unsigned MaxELen, MaxELenFp;
85 
87 
88  void addExtension(StringRef ExtName, unsigned MajorVersion,
89  unsigned MinorVersion);
90 
91  Error checkDependency();
92 
93  void updateImplication();
94  void updateCombination();
95  void updateFLen();
96  void updateMinVLen();
97  void updateMaxELen();
98 
100  postProcessAndChecking(std::unique_ptr<RISCVISAInfo> &&ISAInfo);
101 };
102 
103 } // namespace llvm
104 
105 #endif
llvm::RISCVISAInfo::hasExtension
bool hasExtension(StringRef Ext) const
Definition: RISCVISAInfo.cpp:241
llvm
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
llvm::RISCVISAInfo::compareExtension
static bool compareExtension(const std::string &LHS, const std::string &RHS)
Definition: RISCVISAInfo.cpp:308
StringRef.h
llvm::RISCVISAInfo::computeDefaultABI
StringRef computeDefaultABI() const
Definition: RISCVISAInfo.cpp:981
llvm::RISCVISAInfo::getMaxVLen
unsigned getMaxVLen() const
Definition: RISCVISAInfo.h:63
Error.h
llvm::RISCVISAInfo::isSupportedExtension
static bool isSupportedExtension(StringRef Ext)
Definition: RISCVISAInfo.cpp:226
llvm::Expected
Tagged union holding either a T or a Error.
Definition: APFloat.h:41
RHS
Value * RHS
Definition: X86PartialReduction.cpp:76
llvm::RISCVISAInfo::toFeatureVector
std::vector< std::string > toFeatureVector() const
Definition: RISCVISAInfo.cpp:954
llvm::RISCVISAInfo::getExtensions
const OrderedExtensionMap & getExtensions() const
Definition: RISCVISAInfo.h:58
LHS
Value * LHS
Definition: X86PartialReduction.cpp:75
llvm::RISCVISAInfo::getFLen
unsigned getFLen() const
Definition: RISCVISAInfo.h:61
llvm::RISCVExtensionInfo::ExtName
std::string ExtName
Definition: RISCVISAInfo.h:21
llvm::RISCVISAInfo::parseFeatures
static llvm::Expected< std::unique_ptr< RISCVISAInfo > > parseFeatures(unsigned XLen, const std::vector< std::string > &Features)
Parse RISCV ISA info from feature vector.
Definition: RISCVISAInfo.cpp:458
llvm::RISCVISAInfo::getXLen
unsigned getXLen() const
Definition: RISCVISAInfo.h:60
llvm::RISCVISAInfo::toString
std::string toString() const
Definition: RISCVISAInfo.cpp:937
llvm::MipsISD::Ext
@ Ext
Definition: MipsISelLowering.h:159
llvm::RISCVExtensionInfo
Definition: RISCVISAInfo.h:20
llvm::RISCVISAInfo::getMinVLen
unsigned getMinVLen() const
Definition: RISCVISAInfo.h:62
llvm::RISCVExtensionInfo::MinorVersion
unsigned MinorVersion
Definition: RISCVISAInfo.h:23
llvm::RISCVISAInfo::ExtensionComparator
Helper class for OrderedExtensionMap.
Definition: RISCVISAInfo.h:34
llvm::RISCVISAInfo::parseArchString
static llvm::Expected< std::unique_ptr< RISCVISAInfo > > parseArchString(StringRef Arch, bool EnableExperimentalExtension, bool ExperimentalExtensionVersionCheck=true)
Parse RISCV ISA info from arch string.
Definition: RISCVISAInfo.cpp:492
function
print Print MemDeps of function
Definition: MemDepPrinter.cpp:82
llvm::RISCVISAInfo::ExtensionComparator::operator()
bool operator()(const std::string &LHS, const std::string &RHS) const
Definition: RISCVISAInfo.h:35
llvm::RISCVISAInfo::getMaxELenFp
unsigned getMaxELenFp() const
Definition: RISCVISAInfo.h:65
llvm::StringRef
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:50
llvm::RISCVISAInfo::OrderedExtensionMap
std::map< std::string, RISCVExtensionInfo, ExtensionComparator > OrderedExtensionMap
OrderedExtensionMap is std::map, it's specialized to keep entries in canonical order of extension.
Definition: RISCVISAInfo.h:43
llvm::RISCVISAInfo::RISCVISAInfo
RISCVISAInfo(const RISCVISAInfo &)=delete
llvm::RISCVISAInfo::operator=
RISCVISAInfo & operator=(const RISCVISAInfo &)=delete
llvm::Twine
Twine - A lightweight data structure for efficiently representing the concatenation of temporary valu...
Definition: Twine.h:81
llvm::RISCVISAInfo::getMaxELen
unsigned getMaxELen() const
Definition: RISCVISAInfo.h:64
llvm::RISCVISAInfo
Definition: RISCVISAInfo.h:26
llvm::RISCVExtensionInfo::MajorVersion
unsigned MajorVersion
Definition: RISCVISAInfo.h:22
llvm::RISCVISAInfo::isSupportedExtensionFeature
static bool isSupportedExtensionFeature(StringRef Ext)
Definition: RISCVISAInfo.cpp:217
llvm::RISCVISAInfo::toFeatures
void toFeatures(std::vector< StringRef > &Features, std::function< StringRef(const Twine &)> StrAlloc) const
Convert RISCV ISA info to a feature vector.
Definition: RISCVISAInfo.cpp:332