clang 10.0.0git

ARM.h
Go to the documentation of this file.
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"
18 #include "clang/Basic/TargetOptions.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 void getTargetDefinesARMV82A(const LangOptions &Opts,
152 MacroBuilder &Builder) const;
153 void getTargetDefinesARMV83A(const LangOptions &Opts,
154 MacroBuilder &Builder) const;
155 void getTargetDefines(const LangOptions &Opts,
156 MacroBuilder &Builder) const override;
157
158 ArrayRef<Builtin::Info> getTargetBuiltins() const override;
159
160 bool isCLZForZeroUndef() const override;
161 BuiltinVaListKind getBuiltinVaListKind() const override;
162
163 ArrayRef<const char *> getGCCRegNames() const override;
164 ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const override;
165 bool validateAsmConstraint(const char *&Name,
166 TargetInfo::ConstraintInfo &Info) const override;
167 std::string convertConstraint(const char *&Constraint) const override;
168 bool
169 validateConstraintModifier(StringRef Constraint, char Modifier, unsigned Size,
170 std::string &SuggestedModifier) const override;
171 const char *getClobbers() const override;
172
173 StringRef getConstraintRegister(StringRef Constraint,
174 StringRef Expression) const override {
175 return Expression;
176 }
177
178 CallingConvCheckResult checkCallingConvention(CallingConv CC) const override;
179
180 int getEHDataRegisterNumber(unsigned RegNo) const override;
181
182 bool hasSjLjLowering() const override;
183 };
184
185 class LLVM_LIBRARY_VISIBILITY ARMleTargetInfo : public ARMTargetInfo {
186 public:
187 ARMleTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
188 void getTargetDefines(const LangOptions &Opts,
189 MacroBuilder &Builder) const override;
190 };
191
192 class LLVM_LIBRARY_VISIBILITY ARMbeTargetInfo : public ARMTargetInfo {
193 public:
194 ARMbeTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
195 void getTargetDefines(const LangOptions &Opts,
196 MacroBuilder &Builder) const override;
197 };
198
199 class LLVM_LIBRARY_VISIBILITY WindowsARMTargetInfo
200 : public WindowsTargetInfo<ARMleTargetInfo> {
201 const llvm::Triple Triple;
202
203 public:
204 WindowsARMTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
205
206 void getVisualStudioDefines(const LangOptions &Opts,
207 MacroBuilder &Builder) const;
208
209 BuiltinVaListKind getBuiltinVaListKind() const override;
210
211 CallingConvCheckResult checkCallingConvention(CallingConv CC) const override;
212 };
213
214 // Windows ARM + Itanium C++ ABI Target
215 class LLVM_LIBRARY_VISIBILITY ItaniumWindowsARMleTargetInfo
216 : public WindowsARMTargetInfo {
217 public:
218 ItaniumWindowsARMleTargetInfo(const llvm::Triple &Triple,
219 const TargetOptions &Opts);
220
221 void getTargetDefines(const LangOptions &Opts,
222 MacroBuilder &Builder) const override;
223 };
224
225 // Windows ARM, MS (C++) ABI
226 class LLVM_LIBRARY_VISIBILITY MicrosoftARMleTargetInfo
227 : public WindowsARMTargetInfo {
228 public:
229 MicrosoftARMleTargetInfo(const llvm::Triple &Triple,
230 const TargetOptions &Opts);
231
232 void getTargetDefines(const LangOptions &Opts,
233 MacroBuilder &Builder) const override;
234 };
235
236 // ARM MinGW target
237 class LLVM_LIBRARY_VISIBILITY MinGWARMTargetInfo : public WindowsARMTargetInfo {
238 public:
239 MinGWARMTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
240
241 void getTargetDefines(const LangOptions &Opts,
242 MacroBuilder &Builder) const override;
243 };
244
245 // ARM Cygwin target
246 class LLVM_LIBRARY_VISIBILITY CygwinARMTargetInfo : public ARMleTargetInfo {
247 public:
248 CygwinARMTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
249
250 void getTargetDefines(const LangOptions &Opts,
251 MacroBuilder &Builder) const override;
252 };
253
254 class LLVM_LIBRARY_VISIBILITY DarwinARMTargetInfo
255 : public DarwinTargetInfo<ARMleTargetInfo> {
256 protected:
257 void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
258 MacroBuilder &Builder) const override;
259
260 public:
261 DarwinARMTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
262 };
263
264 // 32-bit RenderScript is armv7 with width and align of 'long' set to 8-bytes
265 class LLVM_LIBRARY_VISIBILITY RenderScript32TargetInfo
266 : public ARMleTargetInfo {
267 public:
268 RenderScript32TargetInfo(const llvm::Triple &Triple,
269 const TargetOptions &Opts);
270
271 void getTargetDefines(const LangOptions &Opts,
272 MacroBuilder &Builder) const override;
273 };
274
275 } // namespace targets
276 } // namespace clang
277
278 #endif // LLVM_CLANG_LIB_BASIC_TARGETS_ARM_H
BuiltinInfo
static const Builtin::Info BuiltinInfo[]
Definition: Builtins.cpp:20
clang::targets::ARMTargetInfo::getConstraintRegister
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:173
clang::targets::CygwinARMTargetInfo
Definition: ARM.h:246
clang::TargetOptions
Options for controlling the target.
Definition: TargetOptions.h:26
clang::targets::DarwinTargetInfo
Definition: OSTargets.h:79
clang::targets::ARMTargetInfo
Definition: ARM.h:26
clang::Builtin::Info
Definition: Builtins.h:53
clang::targets::ARMbeTargetInfo
Definition: ARM.h:192
clang::LangOptions
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:53
llvm::SmallVectorImpl
Definition: LLVM.h:36
OSTargets.h
clang::DiagnosticsEngine
Concrete class used by the front-end to report problems and issues.
Definition: Diagnostic.h:149
llvm::ArrayRef
Definition: LLVM.h:31
clang::targets::GCCRegNames
static const char *const GCCRegNames[]
Definition: X86.cpp:43
clang::targets::DarwinARMTargetInfo
Definition: ARM.h:254
clang::targets::WindowsTargetInfo
Definition: OSTargets.h:727
clang::targets::ARMTargetInfo::isValidFeatureName
bool isValidFeatureName(StringRef Feature) const override
Determine whether this TargetInfo supports the given feature.
Definition: ARM.h:127
clang::TargetInfo
Exposes information about the current target.
Definition: TargetInfo.h:164
clang::targets::RenderScript32TargetInfo
Definition: ARM.h:265
clang::targets::ARMTargetInfo::useFP16ConversionIntrinsics
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
clang::CallingConv
CallingConv
CallingConv - Specifies the calling convention that a function uses.
Definition: Specifiers.h:265
clang::TargetInfo::ConstraintInfo
Definition: TargetInfo.h:830
Kind
Kind
Definition: ChrootChecker.cpp:29
clang::targets::ItaniumWindowsARMleTargetInfo
Definition: ARM.h:215
Modifier
OpenMPLinearClauseKind Modifier
Modifier of &#39;linear&#39; clause.
Definition: OpenMPClause.h:101
TargetOptions.h
Defines the clang::TargetOptions class.
clang::targets::MicrosoftARMleTargetInfo
Definition: ARM.h:226
clang
Dataflow Directional Tag Classes.
Definition: CFGReachabilityAnalysis.h:21
clang::targets::ARMleTargetInfo
Definition: ARM.h:185
clang::targets::WindowsARMTargetInfo
Definition: ARM.h:199
clang::MacroBuilder
Definition: MacroBuilder.h:23
clang::TargetInfo::BuiltinVaListKind
BuiltinVaListKind
The different kinds of __builtin_va_list types defined by the target implementation.
Definition: TargetInfo.h:226
clang::TargetInfo::GCCRegAlias
Definition: TargetInfo.h:1003
hasFeature
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
clang::targets::MinGWARMTargetInfo
Definition: ARM.h:237
TargetInfo.h
Defines the clang::TargetInfo interface.
clang::TargetInfo::CallingConvCheckResult
CallingConvCheckResult
Definition: TargetInfo.h:1283