1 //===--- ARM.h - Declare ARM target feature support -------------*- C++ -*-===//
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
7 //===----------------------------------------------------------------------===//
9 // This file declares ARM TargetInfo objects.
11 //===----------------------------------------------------------------------===//
13 #ifndef LLVM_CLANG_LIB_BASIC_TARGETS_ARM_H
14 #define LLVM_CLANG_LIB_BASIC_TARGETS_ARM_H
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"
26 class LLVM_LIBRARY_VISIBILITY ARMTargetInfo : public TargetInfo {
27 // Possible FPU choices.
41 // Possible HWDiv features.
42 enum HWDivMode { HWDivThumb = (1 << 0), HWDivARM = (1 << 1) };
44 static bool FPUModeIsVFP(FPUMode Mode) {
45 return Mode & (VFP2FPU | VFP3FPU | VFP4FPU | NeonFPU | FPARMV8);
48 static const TargetInfo::GCCRegAlias GCCRegAliases[];
49 static const char *const GCCRegNames[];
56 enum { FP_Default, FP_VFP, FP_Neon } FPMath;
58 llvm::ARM::ISAKind ArchISA;
59 llvm::ARM::ArchKind ArchKind = llvm::ARM::ArchKind::ARMV4T;
60 llvm::ARM::ProfileKind ArchProfile;
69 // Initialized via features.
70 unsigned SoftFloat : 1;
71 unsigned SoftFloatABI : 1;
76 unsigned Unaligned : 1;
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)
88 // ACLE 6.5.1 Hardware floating point
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)
96 static const Builtin::Info BuiltinInfo[];
99 void setABIAPCS(bool IsAAPCS16);
102 void setArchInfo(llvm::ARM::ArchKind Kind);
106 bool isThumb() const;
107 bool supportsThumb() const;
108 bool supportsThumb2() const;
110 bool hasMVEFloat() const;
112 StringRef getCPUAttr() const;
113 StringRef getCPUProfile() const;
116 ARMTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
118 StringRef getABI() const override;
119 bool setABI(const std::string &Name) override;
121 // FIXME: This should be based on Arch attributes, not CPU names.
123 initFeatureMap(llvm::StringMap<bool> &Features, DiagnosticsEngine &Diags,
125 const std::vector<std::string> &FeaturesVec) const override;
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";
133 bool handleTargetFeatures(std::vector<std::string> &Features,
134 DiagnosticsEngine &Diags) override;
136 bool hasFeature(StringRef Feature) const override;
138 bool isValidCPUName(StringRef Name) const override;
139 void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const override;
141 bool setCPU(const std::string &Name) override;
143 bool setFPMath(StringRef Name) override;
145 bool useFP16ConversionIntrinsics() const override {
149 void getTargetDefinesARMV81A(const LangOptions &Opts,
150 MacroBuilder &Builder) const;
152 void getTargetDefinesARMV82A(const LangOptions &Opts,
153 MacroBuilder &Builder) const;
154 void getTargetDefines(const LangOptions &Opts,
155 MacroBuilder &Builder) const override;
157 ArrayRef<Builtin::Info> getTargetBuiltins() const override;
159 bool isCLZForZeroUndef() const override;
160 BuiltinVaListKind getBuiltinVaListKind() const override;
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;
168 validateConstraintModifier(StringRef Constraint, char Modifier, unsigned Size,
169 std::string &SuggestedModifier) const override;
170 const char *getClobbers() const override;
172 StringRef getConstraintRegister(StringRef Constraint,
173 StringRef Expression) const override {
177 CallingConvCheckResult checkCallingConvention(CallingConv CC) const override;
179 int getEHDataRegisterNumber(unsigned RegNo) const override;
181 bool hasSjLjLowering() const override;
184 class LLVM_LIBRARY_VISIBILITY ARMleTargetInfo : public ARMTargetInfo {
186 ARMleTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
187 void getTargetDefines(const LangOptions &Opts,
188 MacroBuilder &Builder) const override;
191 class LLVM_LIBRARY_VISIBILITY ARMbeTargetInfo : public ARMTargetInfo {
193 ARMbeTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
194 void getTargetDefines(const LangOptions &Opts,
195 MacroBuilder &Builder) const override;
198 class LLVM_LIBRARY_VISIBILITY WindowsARMTargetInfo
199 : public WindowsTargetInfo<ARMleTargetInfo> {
200 const llvm::Triple Triple;
203 WindowsARMTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
205 void getVisualStudioDefines(const LangOptions &Opts,
206 MacroBuilder &Builder) const;
208 BuiltinVaListKind getBuiltinVaListKind() const override;
210 CallingConvCheckResult checkCallingConvention(CallingConv CC) const override;
213 // Windows ARM + Itanium C++ ABI Target
214 class LLVM_LIBRARY_VISIBILITY ItaniumWindowsARMleTargetInfo
215 : public WindowsARMTargetInfo {
217 ItaniumWindowsARMleTargetInfo(const llvm::Triple &Triple,
218 const TargetOptions &Opts);
220 void getTargetDefines(const LangOptions &Opts,
221 MacroBuilder &Builder) const override;
224 // Windows ARM, MS (C++) ABI
225 class LLVM_LIBRARY_VISIBILITY MicrosoftARMleTargetInfo
226 : public WindowsARMTargetInfo {
228 MicrosoftARMleTargetInfo(const llvm::Triple &Triple,
229 const TargetOptions &Opts);
231 void getTargetDefines(const LangOptions &Opts,
232 MacroBuilder &Builder) const override;
236 class LLVM_LIBRARY_VISIBILITY MinGWARMTargetInfo : public WindowsARMTargetInfo {
238 MinGWARMTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
240 void getTargetDefines(const LangOptions &Opts,
241 MacroBuilder &Builder) const override;
245 class LLVM_LIBRARY_VISIBILITY CygwinARMTargetInfo : public ARMleTargetInfo {
247 CygwinARMTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
249 void getTargetDefines(const LangOptions &Opts,
250 MacroBuilder &Builder) const override;
253 class LLVM_LIBRARY_VISIBILITY DarwinARMTargetInfo
254 : public DarwinTargetInfo<ARMleTargetInfo> {
256 void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
257 MacroBuilder &Builder) const override;
260 DarwinARMTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts);
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 {
267 RenderScript32TargetInfo(const llvm::Triple &Triple,
268 const TargetOptions &Opts);
270 void getTargetDefines(const LangOptions &Opts,
271 MacroBuilder &Builder) const override;
274 } // namespace targets
277 #endif // LLVM_CLANG_LIB_BASIC_TARGETS_ARM_H