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.
46 FK_CRYPTO_NEON_FP_ARMV8,
51 // An FPU name implies one of three levels of Neon support:
52 enum NeonSupportLevel {
53 NS_None = 0, //< No Neon
55 NS_Crypto //< Neon with Crypto
58 // An FPU name restricts the FPU in one of three ways:
60 FR_None = 0, //< No restriction
61 FR_D16, //< Only 16 D registers
62 FR_SP_D16 //< Only single-precision instructions, with 16 D registers
90 // Non-standard Arch names.
105 // Arch extension modifiers for CPUs.
116 // Unsupported extensions.
134 // FIXME: BE8 vs. BE32?
150 // Target Parsers, one per architecture.
151 class ARMTargetParser {
152 static StringRef getFPUSynonym(StringRef FPU);
153 static StringRef getArchSynonym(StringRef Arch);
156 static StringRef getCanonicalArchName(StringRef Arch);
159 static const char * getFPUName(unsigned FPUKind);
160 static unsigned getFPUVersion(unsigned FPUKind);
161 static unsigned getFPUNeonSupportLevel(unsigned FPUKind);
162 static unsigned getFPURestriction(unsigned FPUKind);
163 // FIXME: This should be moved to TargetTuple once it exists
164 static bool getFPUFeatures(unsigned FPUKind,
165 std::vector<const char*> &Features);
166 static const char * getArchName(unsigned ArchKind);
167 static unsigned getArchAttr(unsigned ArchKind);
168 static const char * getCPUAttr(unsigned ArchKind);
169 static const char * getSubArch(unsigned ArchKind);
170 static const char * getArchExtName(unsigned ArchExtKind);
171 static const char * getDefaultCPU(StringRef Arch);
174 static unsigned parseFPU(StringRef FPU);
175 static unsigned parseArch(StringRef Arch);
176 static unsigned parseArchExt(StringRef ArchExt);
177 static unsigned parseCPUArch(StringRef CPU);
178 static unsigned parseArchISA(StringRef Arch);
179 static unsigned parseArchEndian(StringRef Arch);
180 static unsigned parseArchProfile(StringRef Arch);
181 static unsigned parseArchVersion(StringRef Arch);