1 //===-- TargetParser - Parser for target features ---------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements a target parser to recognise hardware features such as
11 // FPU/CPU/ARCH names as well as specific support such as HDIV, etc.
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_SUPPORT_TARGETPARSER_H
16 #define LLVM_SUPPORT_TARGETPARSER_H
18 // FIXME: vector is used because that's what clang uses for subtarget feature
19 // lists, but SmallVector would probably be better
25 // Target specific information into their own namespaces. These should be
26 // generated from TableGen because the information is already there, and there
27 // is where new information about targets will be added.
28 // FIXME: To TableGen this we need to make some table generated files available
29 // even if the back-end is not compiled with LLVM, plus we need to create a new
30 // back-end to TableGen to create these clean tables.
54 FK_CRYPTO_NEON_FP_ARMV8,
69 // An FPU name implies one of three levels of Neon support:
70 enum NeonSupportLevel {
71 NS_None = 0, ///< No Neon
73 NS_Crypto ///< Neon with Crypto
76 // An FPU name restricts the FPU in one of three ways:
78 FR_None = 0, ///< No restriction
79 FR_D16, ///< Only 16 D registers
80 FR_SP_D16 ///< Only single-precision instructions, with 16 D registers
108 // Non-standard Arch names.
123 // Arch extension modifiers for CPUs.
124 enum ArchExtKind : unsigned {
136 // Unsupported extensions.
138 AEK_IWMMXT = 0x10000000,
139 AEK_IWMMXT2 = 0x20000000,
140 AEK_MAVERICK = 0x40000000,
141 AEK_XSCALE = 0x80000000,
153 // FIXME: BE8 vs. BE32?
169 // Target Parsers, one per architecture.
170 class ARMTargetParser {
171 static StringRef getHWDivSynonym(StringRef HWDiv);
172 static StringRef getFPUSynonym(StringRef FPU);
173 static StringRef getArchSynonym(StringRef Arch);
176 static StringRef getCanonicalArchName(StringRef Arch);
179 static const char * getFPUName(unsigned FPUKind);
180 static unsigned getFPUVersion(unsigned FPUKind);
181 static unsigned getFPUNeonSupportLevel(unsigned FPUKind);
182 static unsigned getFPURestriction(unsigned FPUKind);
183 static unsigned getDefaultFPU(StringRef CPU);
184 // FIXME: This should be moved to TargetTuple once it exists
185 static bool getFPUFeatures(unsigned FPUKind,
186 std::vector<const char*> &Features);
187 static bool getHWDivFeatures(unsigned HWDivKind,
188 std::vector<const char*> &Features);
189 static const char * getArchName(unsigned ArchKind);
190 static unsigned getArchAttr(unsigned ArchKind);
191 static const char * getCPUAttr(unsigned ArchKind);
192 static const char * getSubArch(unsigned ArchKind);
193 static const char * getArchExtName(unsigned ArchExtKind);
194 static const char * getHWDivName(unsigned HWDivKind);
195 static const char * getDefaultCPU(StringRef Arch);
198 static unsigned parseHWDiv(StringRef HWDiv);
199 static unsigned parseFPU(StringRef FPU);
200 static unsigned parseArch(StringRef Arch);
201 static unsigned parseArchExt(StringRef ArchExt);
202 static unsigned parseCPUArch(StringRef CPU);
203 static unsigned parseArchISA(StringRef Arch);
204 static unsigned parseArchEndian(StringRef Arch);
205 static unsigned parseArchProfile(StringRef Arch);
206 static unsigned parseArchVersion(StringRef Arch);