clang  10.0.0svn
ARM.h
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1 //===--- ARM.h - Declare ARM target feature support -------------*- 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 // This file declares ARM TargetInfo objects.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_CLANG_LIB_BASIC_TARGETS_ARM_H
14 #define LLVM_CLANG_LIB_BASIC_TARGETS_ARM_H
15 
16 #include "OSTargets.h"
17 #include "clang/Basic/TargetInfo.h"
19 #include "llvm/ADT/Triple.h"
20 #include "llvm/Support/Compiler.h"
21 #include "llvm/Support/TargetParser.h"
22 
23 namespace clang {
24 namespace targets {
25 
26 class LLVM_LIBRARY_VISIBILITY ARMTargetInfo : public TargetInfo {
27  // Possible FPU choices.
28  enum FPUMode {
29  VFP2FPU = (1 << 0),
30  VFP3FPU = (1 << 1),
31  VFP4FPU = (1 << 2),
32  NeonFPU = (1 << 3),
33  FPARMV8 = (1 << 4)
34  };
35 
36  enum MVEMode {
37  MVE_INT = (1 << 0),
38  MVE_FP = (1 << 1)
39  };
40 
41  // Possible HWDiv features.
42  enum HWDivMode { HWDivThumb = (1 << 0), HWDivARM = (1 << 1) };
43 
44  static bool FPUModeIsVFP(FPUMode Mode) {
45  return Mode & (VFP2FPU | VFP3FPU | VFP4FPU | NeonFPU | FPARMV8);
46  }
47 
48  static const TargetInfo::GCCRegAlias GCCRegAliases[];
49  static const char *const GCCRegNames[];
50 
51  std::string ABI, CPU;
52 
53  StringRef CPUProfile;
54  StringRef CPUAttr;
55 
56  enum { FP_Default, FP_VFP, FP_Neon } FPMath;
57 
58  llvm::ARM::ISAKind ArchISA;
59  llvm::ARM::ArchKind ArchKind = llvm::ARM::ArchKind::ARMV4T;
60  llvm::ARM::ProfileKind ArchProfile;
61  unsigned ArchVersion;
62 
63  unsigned FPU : 5;
64  unsigned MVE : 2;
65 
66  unsigned IsAAPCS : 1;
67  unsigned HWDiv : 2;
68 
69  // Initialized via features.
70  unsigned SoftFloat : 1;
71  unsigned SoftFloatABI : 1;
72 
73  unsigned CRC : 1;
74  unsigned Crypto : 1;
75  unsigned DSP : 1;
76  unsigned Unaligned : 1;
77  unsigned DotProd : 1;
78 
79  enum {
80  LDREX_B = (1 << 0), /// byte (8-bit)
81  LDREX_H = (1 << 1), /// half (16-bit)
82  LDREX_W = (1 << 2), /// word (32-bit)
83  LDREX_D = (1 << 3), /// double (64-bit)
84  };
85 
86  uint32_t LDREX;
87 
88  // ACLE 6.5.1 Hardware floating point
89  enum {
90  HW_FP_HP = (1 << 1), /// half (16-bit)
91  HW_FP_SP = (1 << 2), /// single (32-bit)
92  HW_FP_DP = (1 << 3), /// double (64-bit)
93  };
94  uint32_t HW_FP;
95 
96  static const Builtin::Info BuiltinInfo[];
97 
98  void setABIAAPCS();
99  void setABIAPCS(bool IsAAPCS16);
100 
101  void setArchInfo();
102  void setArchInfo(llvm::ARM::ArchKind Kind);
103 
104  void setAtomic();
105 
106  bool isThumb() const;
107  bool supportsThumb() const;
108  bool supportsThumb2() const;
109  bool hasMVE() const;
110  bool hasMVEFloat() const;
111 
112  StringRef getCPUAttr() const;
113  StringRef getCPUProfile() const;
114 
115 public:
116  ARMTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
117 
118  StringRef getABI() const override;
119  bool setABI(const std::string &Name) override;
120 
121  // FIXME: This should be based on Arch attributes, not CPU names.
122  bool
123  initFeatureMap(llvm::StringMap<bool> &Features, DiagnosticsEngine &Diags,
124  StringRef CPU,
125  const std::vector<std::string> &FeaturesVec) const override;
126 
127  bool isValidFeatureName(StringRef Feature) const override {
128  // We pass soft-float-abi in as a -target-feature, but the backend figures
129  // this out through other means.
130  return Feature != "soft-float-abi";
131  }
132 
133  bool handleTargetFeatures(std::vector<std::string> &Features,
134  DiagnosticsEngine &Diags) override;
135 
136  bool hasFeature(StringRef Feature) const override;
137 
138  bool isValidCPUName(StringRef Name) const override;
139  void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const override;
140 
141  bool setCPU(const std::string &Name) override;
142 
143  bool setFPMath(StringRef Name) override;
144 
145  bool useFP16ConversionIntrinsics() const override {
146  return false;
147  }
148 
149  void getTargetDefinesARMV81A(const LangOptions &Opts,
150  MacroBuilder &Builder) const;
151 
152  void getTargetDefinesARMV82A(const LangOptions &Opts,
153  MacroBuilder &Builder) const;
154  void getTargetDefines(const LangOptions &Opts,
155  MacroBuilder &Builder) const override;
156 
157  ArrayRef<Builtin::Info> getTargetBuiltins() const override;
158 
159  bool isCLZForZeroUndef() const override;
160  BuiltinVaListKind getBuiltinVaListKind() const override;
161 
162  ArrayRef<const char *> getGCCRegNames() const override;
163  ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override;
164  bool validateAsmConstraint(const char *&Name,
165  TargetInfo::ConstraintInfo &Info) const override;
166  std::string convertConstraint(const char *&Constraint) const override;
167  bool
168  validateConstraintModifier(StringRef Constraint, char Modifier, unsigned Size,
169  std::string &SuggestedModifier) const override;
170  const char *getClobbers() const override;
171 
172  StringRef getConstraintRegister(StringRef Constraint,
173  StringRef Expression) const override {
174  return Expression;
175  }
176 
177  CallingConvCheckResult checkCallingConvention(CallingConv CC) const override;
178 
179  int getEHDataRegisterNumber(unsigned RegNo) const override;
180 
181  bool hasSjLjLowering() const override;
182 };
183 
184 class LLVM_LIBRARY_VISIBILITY ARMleTargetInfo : public ARMTargetInfo {
185 public:
186  ARMleTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
187  void getTargetDefines(const LangOptions &Opts,
188  MacroBuilder &Builder) const override;
189 };
190 
191 class LLVM_LIBRARY_VISIBILITY ARMbeTargetInfo : public ARMTargetInfo {
192 public:
193  ARMbeTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
194  void getTargetDefines(const LangOptions &Opts,
195  MacroBuilder &Builder) const override;
196 };
197 
198 class LLVM_LIBRARY_VISIBILITY WindowsARMTargetInfo
199  : public WindowsTargetInfo<ARMleTargetInfo> {
200  const llvm::Triple Triple;
201 
202 public:
203  WindowsARMTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
204 
205  void getVisualStudioDefines(const LangOptions &Opts,
206  MacroBuilder &Builder) const;
207 
208  BuiltinVaListKind getBuiltinVaListKind() const override;
209 
210  CallingConvCheckResult checkCallingConvention(CallingConv CC) const override;
211 };
212 
213 // Windows ARM + Itanium C++ ABI Target
214 class LLVM_LIBRARY_VISIBILITY ItaniumWindowsARMleTargetInfo
215  : public WindowsARMTargetInfo {
216 public:
217  ItaniumWindowsARMleTargetInfo(const llvm::Triple &Triple,
218  const TargetOptions &Opts);
219 
220  void getTargetDefines(const LangOptions &Opts,
221  MacroBuilder &Builder) const override;
222 };
223 
224 // Windows ARM, MS (C++) ABI
225 class LLVM_LIBRARY_VISIBILITY MicrosoftARMleTargetInfo
226  : public WindowsARMTargetInfo {
227 public:
228  MicrosoftARMleTargetInfo(const llvm::Triple &Triple,
229  const TargetOptions &Opts);
230 
231  void getTargetDefines(const LangOptions &Opts,
232  MacroBuilder &Builder) const override;
233 };
234 
235 // ARM MinGW target
236 class LLVM_LIBRARY_VISIBILITY MinGWARMTargetInfo : public WindowsARMTargetInfo {
237 public:
238  MinGWARMTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
239 
240  void getTargetDefines(const LangOptions &Opts,
241  MacroBuilder &Builder) const override;
242 };
243 
244 // ARM Cygwin target
245 class LLVM_LIBRARY_VISIBILITY CygwinARMTargetInfo : public ARMleTargetInfo {
246 public:
247  CygwinARMTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
248 
249  void getTargetDefines(const LangOptions &Opts,
250  MacroBuilder &Builder) const override;
251 };
252 
253 class LLVM_LIBRARY_VISIBILITY DarwinARMTargetInfo
254  : public DarwinTargetInfo<ARMleTargetInfo> {
255 protected:
256  void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
257  MacroBuilder &Builder) const override;
258 
259 public:
260  DarwinARMTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
261 };
262 
263 // 32-bit RenderScript is armv7 with width and align of 'long' set to 8-bytes
264 class LLVM_LIBRARY_VISIBILITY RenderScript32TargetInfo
265  : public ARMleTargetInfo {
266 public:
267  RenderScript32TargetInfo(const llvm::Triple &Triple,
268  const TargetOptions &Opts);
269 
270  void getTargetDefines(const LangOptions &Opts,
271  MacroBuilder &Builder) const override;
272 };
273 
274 } // namespace targets
275 } // namespace clang
276 
277 #endif // LLVM_CLANG_LIB_BASIC_TARGETS_ARM_H
static const Builtin::Info BuiltinInfo[]
Definition: Builtins.cpp:20
StringRef getConstraintRegister(StringRef Constraint, StringRef Expression) const override
Extracts a register from the passed constraint (if it is a single-register constraint) and the asm la...
Definition: ARM.h:172
static bool hasFeature(StringRef Feature, const LangOptions &LangOpts, const TargetInfo &Target)
Determine whether a translation unit built using the current language options has the given feature...
Definition: Module.cpp:106
Options for controlling the target.
Definition: TargetOptions.h:26
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:49
Concrete class used by the front-end to report problems and issues.
Definition: Diagnostic.h:149
static const char *const GCCRegNames[]
Definition: X86.cpp:43
bool isValidFeatureName(StringRef Feature) const override
Determine whether this TargetInfo supports the given feature.
Definition: ARM.h:127
Exposes information about the current target.
Definition: TargetInfo.h:161
bool useFP16ConversionIntrinsics() const override
Check whether llvm intrinsics such as llvm.convert.to.fp16 should be used to convert to and from __fp...
Definition: ARM.h:145
CallingConv
CallingConv - Specifies the calling convention that a function uses.
Definition: Specifiers.h:264
Kind
OpenMPLinearClauseKind Modifier
Modifier of &#39;linear&#39; clause.
Definition: OpenMPClause.h:101
Defines the clang::TargetOptions class.
Dataflow Directional Tag Classes.
BuiltinVaListKind
The different kinds of __builtin_va_list types defined by the target implementation.
Definition: TargetInfo.h:225
Defines the clang::TargetInfo interface.