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 #include "llvm/Support/ARMBuildAttributes.h"
16 #include "llvm/Support/TargetParser.h"
17 #include "llvm/ADT/StringExtras.h"
18 #include "llvm/ADT/StringSwitch.h"
25 // List of canonical FPU names (use getFPUSynonym) and which architectural
26 // features they correspond to (use getFPUFeatures).
27 // FIXME: TableGen this.
28 // The entries must appear in the order listed in ARM::FPUKind for correct indexing
32 ARM::FPUVersion FPUVersion;
33 ARM::NeonSupportLevel NeonSupport;
34 ARM::FPURestriction Restriction;
36 { "invalid", ARM::FK_INVALID, ARM::FV_NONE, ARM::NS_None, ARM::FR_None},
37 { "none", ARM::FK_NONE, ARM::FV_NONE, ARM::NS_None, ARM::FR_None},
38 { "vfp", ARM::FK_VFP, ARM::FV_VFPV2, ARM::NS_None, ARM::FR_None},
39 { "vfpv2", ARM::FK_VFPV2, ARM::FV_VFPV2, ARM::NS_None, ARM::FR_None},
40 { "vfpv3", ARM::FK_VFPV3, ARM::FV_VFPV3, ARM::NS_None, ARM::FR_None},
41 { "vfpv3-fp16", ARM::FK_VFPV3_FP16, ARM::FV_VFPV3_FP16, ARM::NS_None, ARM::FR_None},
42 { "vfpv3-d16", ARM::FK_VFPV3_D16, ARM::FV_VFPV3, ARM::NS_None, ARM::FR_D16},
43 { "vfpv3-d16-fp16", ARM::FK_VFPV3_D16_FP16, ARM::FV_VFPV3_FP16, ARM::NS_None, ARM::FR_D16},
44 { "vfpv3xd", ARM::FK_VFPV3XD, ARM::FV_VFPV3, ARM::NS_None, ARM::FR_SP_D16},
45 { "vfpv3xd-fp16", ARM::FK_VFPV3XD_FP16, ARM::FV_VFPV3_FP16, ARM::NS_None, ARM::FR_SP_D16},
46 { "vfpv4", ARM::FK_VFPV4, ARM::FV_VFPV4, ARM::NS_None, ARM::FR_None},
47 { "vfpv4-d16", ARM::FK_VFPV4_D16, ARM::FV_VFPV4, ARM::NS_None, ARM::FR_D16},
48 { "fpv4-sp-d16", ARM::FK_FPV4_SP_D16, ARM::FV_VFPV4, ARM::NS_None, ARM::FR_SP_D16},
49 { "fpv5-d16", ARM::FK_FPV5_D16, ARM::FV_VFPV5, ARM::NS_None, ARM::FR_D16},
50 { "fpv5-sp-d16", ARM::FK_FPV5_SP_D16, ARM::FV_VFPV5, ARM::NS_None, ARM::FR_SP_D16},
51 { "fp-armv8", ARM::FK_FP_ARMV8, ARM::FV_VFPV5, ARM::NS_None, ARM::FR_None},
52 { "neon", ARM::FK_NEON, ARM::FV_VFPV3, ARM::NS_Neon, ARM::FR_None},
53 { "neon-fp16", ARM::FK_NEON_FP16, ARM::FV_VFPV3_FP16, ARM::NS_Neon, ARM::FR_None},
54 { "neon-vfpv4", ARM::FK_NEON_VFPV4, ARM::FV_VFPV4, ARM::NS_Neon, ARM::FR_None},
55 { "neon-fp-armv8", ARM::FK_NEON_FP_ARMV8, ARM::FV_VFPV5, ARM::NS_Neon, ARM::FR_None},
56 { "crypto-neon-fp-armv8",
57 ARM::FK_CRYPTO_NEON_FP_ARMV8, ARM::FV_VFPV5, ARM::NS_Crypto, ARM::FR_None},
58 { "softvfp", ARM::FK_SOFTVFP, ARM::FV_NONE, ARM::NS_None, ARM::FR_None},
61 // List of canonical arch names (use getArchSynonym).
62 // This table also provides the build attribute fields for CPU arch
63 // and Arch ID, according to the Addenda to the ARM ABI, chapters
64 // 2.4 and 2.3.5.2 respectively.
65 // FIXME: SubArch values were simplified to fit into the expectations
66 // of the triples and are not conforming with their official names.
67 // Check to see if the expectation should be changed.
68 // FIXME: TableGen this.
72 const char *CPUAttr; // CPU class in build attributes.
73 const char *SubArch; // Sub-Arch name.
74 ARMBuildAttrs::CPUArch ArchAttr; // Arch ID in build attributes.
76 { "invalid", ARM::AK_INVALID, nullptr, nullptr, ARMBuildAttrs::CPUArch::Pre_v4 },
77 { "armv2", ARM::AK_ARMV2, "2", "v2", ARMBuildAttrs::CPUArch::Pre_v4 },
78 { "armv2a", ARM::AK_ARMV2A, "2A", "v2a", ARMBuildAttrs::CPUArch::Pre_v4 },
79 { "armv3", ARM::AK_ARMV3, "3", "v3", ARMBuildAttrs::CPUArch::Pre_v4 },
80 { "armv3m", ARM::AK_ARMV3M, "3M", "v3m", ARMBuildAttrs::CPUArch::Pre_v4 },
81 { "armv4", ARM::AK_ARMV4, "4", "v4", ARMBuildAttrs::CPUArch::v4 },
82 { "armv4t", ARM::AK_ARMV4T, "4T", "v4t", ARMBuildAttrs::CPUArch::v4T },
83 { "armv5t", ARM::AK_ARMV5T, "5T", "v5", ARMBuildAttrs::CPUArch::v5T },
84 { "armv5te", ARM::AK_ARMV5TE, "5TE", "v5e", ARMBuildAttrs::CPUArch::v5TE },
85 { "armv5tej", ARM::AK_ARMV5TEJ, "5TEJ", "v5e", ARMBuildAttrs::CPUArch::v5TEJ },
86 { "armv6", ARM::AK_ARMV6, "6", "v6", ARMBuildAttrs::CPUArch::v6 },
87 { "armv6k", ARM::AK_ARMV6K, "6K", "v6k", ARMBuildAttrs::CPUArch::v6K },
88 { "armv6t2", ARM::AK_ARMV6T2, "6T2", "v6t2", ARMBuildAttrs::CPUArch::v6T2 },
89 { "armv6z", ARM::AK_ARMV6Z, "6Z", "v6z", ARMBuildAttrs::CPUArch::v6KZ },
90 { "armv6zk", ARM::AK_ARMV6ZK, "6ZK", "v6zk", ARMBuildAttrs::CPUArch::v6KZ },
91 { "armv6-m", ARM::AK_ARMV6M, "6-M", "v6m", ARMBuildAttrs::CPUArch::v6_M },
92 { "armv6s-m", ARM::AK_ARMV6SM, "6S-M", "v6sm", ARMBuildAttrs::CPUArch::v6S_M },
93 { "armv7-a", ARM::AK_ARMV7A, "7-A", "v7", ARMBuildAttrs::CPUArch::v7 },
94 { "armv7-r", ARM::AK_ARMV7R, "7-R", "v7r", ARMBuildAttrs::CPUArch::v7 },
95 { "armv7-m", ARM::AK_ARMV7M, "7-M", "v7m", ARMBuildAttrs::CPUArch::v7 },
96 { "armv7e-m", ARM::AK_ARMV7EM, "7E-M", "v7em", ARMBuildAttrs::CPUArch::v7E_M },
97 { "armv8-a", ARM::AK_ARMV8A, "8-A", "v8", ARMBuildAttrs::CPUArch::v8 },
98 { "armv8.1-a", ARM::AK_ARMV8_1A, "8.1-A", "v8.1a", ARMBuildAttrs::CPUArch::v8 },
99 // Non-standard Arch names.
100 { "iwmmxt", ARM::AK_IWMMXT, "iwmmxt", "", ARMBuildAttrs::CPUArch::v5TE },
101 { "iwmmxt2", ARM::AK_IWMMXT2, "iwmmxt2", "", ARMBuildAttrs::CPUArch::v5TE },
102 { "xscale", ARM::AK_XSCALE, "xscale", "", ARMBuildAttrs::CPUArch::v5TE },
103 { "armv5", ARM::AK_ARMV5, "5T", "v5", ARMBuildAttrs::CPUArch::v5T },
104 { "armv5e", ARM::AK_ARMV5E, "5TE", "v5e", ARMBuildAttrs::CPUArch::v5TE },
105 { "armv6j", ARM::AK_ARMV6J, "6J", "v6", ARMBuildAttrs::CPUArch::v6 },
106 { "armv6hl", ARM::AK_ARMV6HL, "6-M", "v6hl", ARMBuildAttrs::CPUArch::v6_M },
107 { "armv7", ARM::AK_ARMV7, "7", "v7", ARMBuildAttrs::CPUArch::v7 },
108 { "armv7l", ARM::AK_ARMV7L, "7-L", "v7l", ARMBuildAttrs::CPUArch::v7 },
109 { "armv7hl", ARM::AK_ARMV7HL, "7-L", "v7hl", ARMBuildAttrs::CPUArch::v7 },
110 { "armv7s", ARM::AK_ARMV7S, "7-S", "v7s", ARMBuildAttrs::CPUArch::v7 }
112 // List of Arch Extension names.
113 // FIXME: TableGen this.
118 { "invalid", ARM::AEK_INVALID },
119 { "none", ARM::AEK_NONE },
120 { "crc", ARM::AEK_CRC },
121 { "crypto", ARM::AEK_CRYPTO },
122 { "fp", ARM::AEK_FP },
123 { "idiv", (ARM::AEK_HWDIVARM | ARM::AEK_HWDIV) },
124 { "mp", ARM::AEK_MP },
125 { "simd", ARM::AEK_SIMD },
126 { "sec", ARM::AEK_SEC },
127 { "virt", ARM::AEK_VIRT },
128 { "os", ARM::AEK_OS },
129 { "iwmmxt", ARM::AEK_IWMMXT },
130 { "iwmmxt2", ARM::AEK_IWMMXT2 },
131 { "maverick", ARM::AEK_MAVERICK },
132 { "xscale", ARM::AEK_XSCALE }
134 // List of HWDiv names (use getHWDivSynonym) and which architectural
135 // features they correspond to (use getHWDivFeatures).
136 // FIXME: TableGen this.
141 { "invalid", ARM::AEK_INVALID },
142 { "none", ARM::AEK_NONE },
143 { "thumb", ARM::AEK_HWDIV },
144 { "arm", ARM::AEK_HWDIVARM },
145 { "arm,thumb", (ARM::AEK_HWDIVARM | ARM::AEK_HWDIV) }
147 // List of CPU names and their arches.
148 // The same CPU can have multiple arches and can be default on multiple arches.
149 // When finding the Arch for a CPU, first-found prevails. Sort them accordingly.
150 // When this becomes table-generated, we'd probably need two tables.
151 // FIXME: TableGen this.
154 ARM::ArchKind ArchID;
155 ARM::FPUKind DefaultFPU;
156 bool Default; // is $Name the default CPU for $ArchID ?
158 { "arm2", ARM::AK_ARMV2, ARM::FK_NONE, true },
159 { "arm3", ARM::AK_ARMV2A, ARM::FK_NONE, true },
160 { "arm6", ARM::AK_ARMV3, ARM::FK_NONE, true },
161 { "arm7m", ARM::AK_ARMV3M, ARM::FK_NONE, true },
162 { "arm8", ARM::AK_ARMV4, ARM::FK_NONE, false },
163 { "arm810", ARM::AK_ARMV4, ARM::FK_NONE, false },
164 { "strongarm", ARM::AK_ARMV4, ARM::FK_NONE, true },
165 { "strongarm110", ARM::AK_ARMV4, ARM::FK_NONE, false },
166 { "strongarm1100", ARM::AK_ARMV4, ARM::FK_NONE, false },
167 { "strongarm1110", ARM::AK_ARMV4, ARM::FK_NONE, false },
168 { "arm7tdmi", ARM::AK_ARMV4T, ARM::FK_NONE, true },
169 { "arm7tdmi-s", ARM::AK_ARMV4T, ARM::FK_NONE, false },
170 { "arm710t", ARM::AK_ARMV4T, ARM::FK_NONE, false },
171 { "arm720t", ARM::AK_ARMV4T, ARM::FK_NONE, false },
172 { "arm9", ARM::AK_ARMV4T, ARM::FK_NONE, false },
173 { "arm9tdmi", ARM::AK_ARMV4T, ARM::FK_NONE, false },
174 { "arm920", ARM::AK_ARMV4T, ARM::FK_NONE, false },
175 { "arm920t", ARM::AK_ARMV4T, ARM::FK_NONE, false },
176 { "arm922t", ARM::AK_ARMV4T, ARM::FK_NONE, false },
177 { "arm9312", ARM::AK_ARMV4T, ARM::FK_NONE, false },
178 { "arm940t", ARM::AK_ARMV4T, ARM::FK_NONE, false },
179 { "ep9312", ARM::AK_ARMV4T, ARM::FK_NONE, false },
180 { "arm10tdmi", ARM::AK_ARMV5T, ARM::FK_NONE, true },
181 { "arm1020t", ARM::AK_ARMV5T, ARM::FK_NONE, false },
182 { "arm9e", ARM::AK_ARMV5TE, ARM::FK_NONE, false },
183 { "arm946e-s", ARM::AK_ARMV5TE, ARM::FK_NONE, false },
184 { "arm966e-s", ARM::AK_ARMV5TE, ARM::FK_NONE, false },
185 { "arm968e-s", ARM::AK_ARMV5TE, ARM::FK_NONE, false },
186 { "arm10e", ARM::AK_ARMV5TE, ARM::FK_NONE, false },
187 { "arm1020e", ARM::AK_ARMV5TE, ARM::FK_NONE, false },
188 { "arm1022e", ARM::AK_ARMV5TE, ARM::FK_NONE, true },
189 { "iwmmxt", ARM::AK_ARMV5TE, ARM::FK_NONE, false },
190 { "xscale", ARM::AK_ARMV5TE, ARM::FK_NONE, false },
191 { "arm926ej-s", ARM::AK_ARMV5TEJ, ARM::FK_NONE, true },
192 { "arm1136jf-s", ARM::AK_ARMV6, ARM::FK_VFPV2, true },
193 { "arm1176j-s", ARM::AK_ARMV6K, ARM::FK_NONE, false },
194 { "arm1176jz-s", ARM::AK_ARMV6K, ARM::FK_NONE, false },
195 { "mpcore", ARM::AK_ARMV6K, ARM::FK_VFPV2, false },
196 { "mpcorenovfp", ARM::AK_ARMV6K, ARM::FK_NONE, false },
197 { "arm1176jzf-s", ARM::AK_ARMV6K, ARM::FK_VFPV2, true },
198 { "arm1176jzf-s", ARM::AK_ARMV6Z, ARM::FK_VFPV2, true },
199 { "arm1176jzf-s", ARM::AK_ARMV6ZK, ARM::FK_VFPV2, true },
200 { "arm1156t2-s", ARM::AK_ARMV6T2, ARM::FK_NONE, true },
201 { "arm1156t2f-s", ARM::AK_ARMV6T2, ARM::FK_VFPV2, false },
202 { "cortex-m0", ARM::AK_ARMV6M, ARM::FK_NONE, true },
203 { "cortex-m0plus", ARM::AK_ARMV6M, ARM::FK_NONE, false },
204 { "cortex-m1", ARM::AK_ARMV6M, ARM::FK_NONE, false },
205 { "sc000", ARM::AK_ARMV6M, ARM::FK_NONE, false },
206 { "cortex-a5", ARM::AK_ARMV7A, ARM::FK_NEON_VFPV4, false },
207 { "cortex-a7", ARM::AK_ARMV7A, ARM::FK_NEON_VFPV4, false },
208 { "cortex-a8", ARM::AK_ARMV7A, ARM::FK_NEON, true },
209 { "cortex-a9", ARM::AK_ARMV7A, ARM::FK_NEON_FP16, false },
210 { "cortex-a12", ARM::AK_ARMV7A, ARM::FK_NEON_VFPV4, false },
211 { "cortex-a15", ARM::AK_ARMV7A, ARM::FK_NEON_VFPV4, false },
212 { "cortex-a17", ARM::AK_ARMV7A, ARM::FK_NEON_VFPV4, false },
213 { "krait", ARM::AK_ARMV7A, ARM::FK_NEON_VFPV4, false },
214 { "cortex-r4", ARM::AK_ARMV7R, ARM::FK_NONE, true },
215 { "cortex-r4f", ARM::AK_ARMV7R, ARM::FK_VFPV3_D16, false },
216 { "cortex-r5", ARM::AK_ARMV7R, ARM::FK_VFPV3_D16, false },
217 { "cortex-r7", ARM::AK_ARMV7R, ARM::FK_VFPV3_D16_FP16, false },
218 { "sc300", ARM::AK_ARMV7M, ARM::FK_NONE, false },
219 { "cortex-m3", ARM::AK_ARMV7M, ARM::FK_NONE, true },
220 { "cortex-m4", ARM::AK_ARMV7EM, ARM::FK_FPV4_SP_D16, true },
221 { "cortex-m7", ARM::AK_ARMV7EM, ARM::FK_FPV5_D16, false },
222 { "cortex-a53", ARM::AK_ARMV8A, ARM::FK_CRYPTO_NEON_FP_ARMV8, true },
223 { "cortex-a57", ARM::AK_ARMV8A, ARM::FK_CRYPTO_NEON_FP_ARMV8, false },
224 { "cortex-a72", ARM::AK_ARMV8A, ARM::FK_CRYPTO_NEON_FP_ARMV8, false },
225 { "cyclone", ARM::AK_ARMV8A, ARM::FK_CRYPTO_NEON_FP_ARMV8, false },
226 { "generic", ARM::AK_ARMV8_1A, ARM::FK_NEON_FP_ARMV8, true },
227 // Non-standard Arch names.
228 { "iwmmxt", ARM::AK_IWMMXT, ARM::FK_NONE, true },
229 { "xscale", ARM::AK_XSCALE, ARM::FK_NONE, true },
230 { "arm10tdmi", ARM::AK_ARMV5, ARM::FK_NONE, true },
231 { "arm1022e", ARM::AK_ARMV5E, ARM::FK_NONE, true },
232 { "arm1136j-s", ARM::AK_ARMV6J, ARM::FK_NONE, true },
233 { "arm1136jz-s", ARM::AK_ARMV6J, ARM::FK_NONE, false },
234 { "cortex-m0", ARM::AK_ARMV6SM, ARM::FK_NONE, true },
235 { "arm1176jzf-s", ARM::AK_ARMV6HL, ARM::FK_VFPV2, true },
236 { "cortex-a8", ARM::AK_ARMV7, ARM::FK_NEON, true },
237 { "cortex-a8", ARM::AK_ARMV7L, ARM::FK_NEON, true },
238 { "cortex-a8", ARM::AK_ARMV7HL, ARM::FK_NEON, true },
239 { "cortex-m4", ARM::AK_ARMV7EM, ARM::FK_NONE, true },
240 { "swift", ARM::AK_ARMV7S, ARM::FK_NEON_VFPV4, true },
242 { "invalid", ARM::AK_INVALID, ARM::FK_INVALID, true }
247 // ======================================================= //
249 // ======================================================= //
251 const char *ARMTargetParser::getFPUName(unsigned FPUKind) {
252 if (FPUKind >= ARM::FK_LAST)
254 return FPUNames[FPUKind].Name;
257 unsigned ARMTargetParser::getFPUVersion(unsigned FPUKind) {
258 if (FPUKind >= ARM::FK_LAST)
260 return FPUNames[FPUKind].FPUVersion;
263 unsigned ARMTargetParser::getFPUNeonSupportLevel(unsigned FPUKind) {
264 if (FPUKind >= ARM::FK_LAST)
266 return FPUNames[FPUKind].NeonSupport;
269 unsigned ARMTargetParser::getFPURestriction(unsigned FPUKind) {
270 if (FPUKind >= ARM::FK_LAST)
272 return FPUNames[FPUKind].Restriction;
275 unsigned ARMTargetParser::getDefaultFPU(StringRef CPU) {
276 for (const auto C : CPUNames) {
280 return ARM::FK_INVALID;
283 bool ARMTargetParser::getHWDivFeatures(unsigned HWDivKind,
284 std::vector<const char *> &Features) {
286 if (HWDivKind == ARM::AEK_INVALID)
289 if (HWDivKind & ARM::AEK_HWDIVARM)
290 Features.push_back("+hwdiv-arm");
292 Features.push_back("-hwdiv-arm");
294 if (HWDivKind & ARM::AEK_HWDIV)
295 Features.push_back("+hwdiv");
297 Features.push_back("-hwdiv");
302 bool ARMTargetParser::getFPUFeatures(unsigned FPUKind,
303 std::vector<const char *> &Features) {
305 if (FPUKind >= ARM::FK_LAST || FPUKind == ARM::FK_INVALID)
308 // fp-only-sp and d16 subtarget features are independent of each other, so we
309 // must enable/disable both.
310 switch (FPUNames[FPUKind].Restriction) {
312 Features.push_back("+fp-only-sp");
313 Features.push_back("+d16");
316 Features.push_back("-fp-only-sp");
317 Features.push_back("+d16");
320 Features.push_back("-fp-only-sp");
321 Features.push_back("-d16");
325 // FPU version subtarget features are inclusive of lower-numbered ones, so
326 // enable the one corresponding to this version and disable all that are
327 // higher. We also have to make sure to disable fp16 when vfp4 is disabled,
328 // as +vfp4 implies +fp16 but -vfp4 does not imply -fp16.
329 switch (FPUNames[FPUKind].FPUVersion) {
331 Features.push_back("+fp-armv8");
334 Features.push_back("+vfp4");
335 Features.push_back("-fp-armv8");
337 case ARM::FV_VFPV3_FP16:
338 Features.push_back("+vfp3");
339 Features.push_back("+fp16");
340 Features.push_back("-vfp4");
341 Features.push_back("-fp-armv8");
344 Features.push_back("+vfp3");
345 Features.push_back("-fp16");
346 Features.push_back("-vfp4");
347 Features.push_back("-fp-armv8");
350 Features.push_back("+vfp2");
351 Features.push_back("-vfp3");
352 Features.push_back("-fp16");
353 Features.push_back("-vfp4");
354 Features.push_back("-fp-armv8");
357 Features.push_back("-vfp2");
358 Features.push_back("-vfp3");
359 Features.push_back("-fp16");
360 Features.push_back("-vfp4");
361 Features.push_back("-fp-armv8");
365 // crypto includes neon, so we handle this similarly to FPU version.
366 switch (FPUNames[FPUKind].NeonSupport) {
368 Features.push_back("+crypto");
371 Features.push_back("+neon");
372 Features.push_back("-crypto");
375 Features.push_back("-neon");
376 Features.push_back("-crypto");
383 const char *ARMTargetParser::getArchName(unsigned ArchKind) {
384 if (ArchKind >= ARM::AK_LAST)
386 return ARCHNames[ArchKind].Name;
389 const char *ARMTargetParser::getCPUAttr(unsigned ArchKind) {
390 if (ArchKind >= ARM::AK_LAST)
392 return ARCHNames[ArchKind].CPUAttr;
395 const char *ARMTargetParser::getSubArch(unsigned ArchKind) {
396 if (ArchKind >= ARM::AK_LAST)
398 return ARCHNames[ArchKind].SubArch;
401 unsigned ARMTargetParser::getArchAttr(unsigned ArchKind) {
402 if (ArchKind >= ARM::AK_LAST)
403 return ARMBuildAttrs::CPUArch::Pre_v4;
404 return ARCHNames[ArchKind].ArchAttr;
407 const char *ARMTargetParser::getArchExtName(unsigned ArchExtKind) {
408 for (const auto AE : ARCHExtNames) {
409 if (ArchExtKind == AE.ID)
415 const char *ARMTargetParser::getHWDivName(unsigned HWDivKind) {
416 for (const auto D : HWDivNames) {
417 if (HWDivKind == D.ID)
423 const char *ARMTargetParser::getDefaultCPU(StringRef Arch) {
424 unsigned AK = parseArch(Arch);
425 if (AK == ARM::AK_INVALID)
428 // Look for multiple AKs to find the default for pair AK+Name.
429 for (const auto CPU : CPUNames) {
430 if (CPU.ArchID == AK && CPU.Default)
436 // ======================================================= //
438 // ======================================================= //
440 StringRef ARMTargetParser::getHWDivSynonym(StringRef HWDiv) {
441 return StringSwitch<StringRef>(HWDiv)
442 .Case("thumb,arm", "arm,thumb")
446 StringRef ARMTargetParser::getFPUSynonym(StringRef FPU) {
447 return StringSwitch<StringRef>(FPU)
448 .Cases("fpa", "fpe2", "fpe3", "maverick", "invalid") // Unsupported
449 .Case("vfp2", "vfpv2")
450 .Case("vfp3", "vfpv3")
451 .Case("vfp4", "vfpv4")
452 .Case("vfp3-d16", "vfpv3-d16")
453 .Case("vfp4-d16", "vfpv4-d16")
454 .Cases("fp4-sp-d16", "vfpv4-sp-d16", "fpv4-sp-d16")
455 .Cases("fp4-dp-d16", "fpv4-dp-d16", "vfpv4-d16")
456 .Case("fp5-sp-d16", "fpv5-sp-d16")
457 .Cases("fp5-dp-d16", "fpv5-dp-d16", "fpv5-d16")
458 // FIXME: Clang uses it, but it's bogus, since neon defaults to vfpv3.
459 .Case("neon-vfpv3", "neon")
463 StringRef ARMTargetParser::getArchSynonym(StringRef Arch) {
464 return StringSwitch<StringRef>(Arch)
465 .Case("v6sm", "v6s-m")
470 .Case("v7em", "v7e-m")
471 .Cases("v8", "v8a", "aarch64", "arm64", "v8-a")
472 .Case("v8.1a", "v8.1-a")
476 // MArch is expected to be of the form (arm|thumb)?(eb)?(v.+)?(eb)?, but
477 // (iwmmxt|xscale)(eb)? is also permitted. If the former, return
478 // "v.+", if the latter, return unmodified string, minus 'eb'.
479 // If invalid, return empty string.
480 StringRef ARMTargetParser::getCanonicalArchName(StringRef Arch) {
481 size_t offset = StringRef::npos;
483 StringRef Error = "";
485 // Begins with "arm" / "thumb", move past it.
486 if (A.startswith("arm64"))
488 else if (A.startswith("arm"))
490 else if (A.startswith("thumb"))
492 else if (A.startswith("aarch64")) {
494 // AArch64 uses "_be", not "eb" suffix.
495 if (A.find("eb") != StringRef::npos)
497 if (A.substr(offset,3) == "_be")
501 // Ex. "armebv7", move past the "eb".
502 if (offset != StringRef::npos && A.substr(offset, 2) == "eb")
504 // Or, if it ends with eb ("armv7eb"), chop it off.
505 else if (A.endswith("eb"))
506 A = A.substr(0, A.size() - 2);
508 if (offset != StringRef::npos)
509 A = A.substr(offset);
511 // Empty string means offset reached the end, which means it's valid.
515 // Only match non-marketing names
516 if (offset != StringRef::npos) {
517 // Must start with 'vN'.
518 if (A[0] != 'v' || !std::isdigit(A[1]))
520 // Can't have an extra 'eb'.
521 if (A.find("eb") != StringRef::npos)
525 // Arch will either be a 'v' name (v7a) or a marketing name (xscale).
529 unsigned ARMTargetParser::parseHWDiv(StringRef HWDiv) {
530 StringRef Syn = getHWDivSynonym(HWDiv);
531 for (const auto D : HWDivNames) {
535 return ARM::AEK_INVALID;
538 unsigned ARMTargetParser::parseFPU(StringRef FPU) {
539 StringRef Syn = getFPUSynonym(FPU);
540 for (const auto F : FPUNames) {
544 return ARM::FK_INVALID;
547 // Allows partial match, ex. "v7a" matches "armv7a".
548 unsigned ARMTargetParser::parseArch(StringRef Arch) {
549 Arch = getCanonicalArchName(Arch);
550 StringRef Syn = getArchSynonym(Arch);
551 for (const auto A : ARCHNames) {
552 if (StringRef(A.Name).endswith(Syn))
555 return ARM::AK_INVALID;
558 unsigned ARMTargetParser::parseArchExt(StringRef ArchExt) {
559 for (const auto A : ARCHExtNames) {
560 if (ArchExt == A.Name)
563 return ARM::AEK_INVALID;
566 unsigned ARMTargetParser::parseCPUArch(StringRef CPU) {
567 for (const auto C : CPUNames) {
571 return ARM::AK_INVALID;
574 // ARM, Thumb, AArch64
575 unsigned ARMTargetParser::parseArchISA(StringRef Arch) {
576 return StringSwitch<unsigned>(Arch)
577 .StartsWith("aarch64", ARM::IK_AARCH64)
578 .StartsWith("arm64", ARM::IK_AARCH64)
579 .StartsWith("thumb", ARM::IK_THUMB)
580 .StartsWith("arm", ARM::IK_ARM)
581 .Default(ARM::EK_INVALID);
585 unsigned ARMTargetParser::parseArchEndian(StringRef Arch) {
586 if (Arch.startswith("armeb") ||
587 Arch.startswith("thumbeb") ||
588 Arch.startswith("aarch64_be"))
591 if (Arch.startswith("arm") || Arch.startswith("thumb")) {
592 if (Arch.endswith("eb"))
595 return ARM::EK_LITTLE;
598 if (Arch.startswith("aarch64"))
599 return ARM::EK_LITTLE;
601 return ARM::EK_INVALID;
605 unsigned ARMTargetParser::parseArchProfile(StringRef Arch) {
606 Arch = getCanonicalArchName(Arch);
607 switch(parseArch(Arch)) {
610 case ARM::AK_ARMV6SM:
611 case ARM::AK_ARMV7EM:
619 case ARM::AK_ARMV8_1A:
622 return ARM::PK_INVALID;
625 // Version number (ex. v7 = 7).
626 unsigned ARMTargetParser::parseArchVersion(StringRef Arch) {
627 Arch = getCanonicalArchName(Arch);
628 switch(parseArch(Arch)) {
640 case ARM::AK_ARMV5TE:
642 case ARM::AK_IWMMXT2:
645 case ARM::AK_ARMV5TEJ:
650 case ARM::AK_ARMV6T2:
652 case ARM::AK_ARMV6ZK:
654 case ARM::AK_ARMV6SM:
655 case ARM::AK_ARMV6HL:
662 case ARM::AK_ARMV7HL:
664 case ARM::AK_ARMV7EM:
667 case ARM::AK_ARMV8_1A: