13 #include "llvm/Option/ArgList.h"
14 #include "llvm/Support/AArch64TargetParser.h"
15 #include "llvm/Support/TargetParser.h"
16 #include "llvm/Support/Host.h"
20 using namespace clang;
26 return Triple.isOSDarwin();
33 const llvm::Triple &Triple, Arg *&A) {
36 if ((A = Args.getLastArg(options::OPT_mcpu_EQ))) {
37 StringRef Mcpu = A->getValue();
38 CPU = Mcpu.split(
"+").first.lower();
48 if (Triple.isTargetMachineMac() &&
49 Triple.getArch() == llvm::Triple::aarch64) {
55 if (Triple.isArm64e())
60 if (Args.getLastArg(options::OPT_arch) || Triple.isOSDarwin())
61 return Triple.getArch() == llvm::Triple::aarch64_32 ?
"apple-s4"
69 std::vector<StringRef> &Features,
70 llvm::AArch64::ArchKind ArchKind) {
72 text.split(
Split, StringRef(
"+"), -1,
false);
74 for (StringRef Feature :
Split) {
75 StringRef FeatureName = llvm::AArch64::getArchExtFeature(Feature);
76 if (!FeatureName.empty())
77 Features.push_back(FeatureName);
78 else if (Feature ==
"neon" || Feature ==
"noneon")
79 D.
Diag(clang::diag::err_drv_no_neon_modifier);
83 if (Feature ==
"sve2")
84 Features.push_back(
"+sve");
85 else if (Feature ==
"sve2-bitperm" || Feature ==
"sve2-sha3" ||
86 Feature ==
"sve2-aes" || Feature ==
"sve2-sm4") {
87 Features.push_back(
"+sve");
88 Features.push_back(
"+sve2");
89 }
else if (Feature ==
"nosve") {
90 Features.push_back(
"-sve2");
91 Features.push_back(
"-sve2-bitperm");
92 Features.push_back(
"-sve2-sha3");
93 Features.push_back(
"-sve2-aes");
94 Features.push_back(
"-sve2-sm4");
95 }
else if (Feature ==
"nosve2") {
96 Features.push_back(
"-sve2-bitperm");
97 Features.push_back(
"-sve2-sha3");
98 Features.push_back(
"-sve2-aes");
99 Features.push_back(
"-sve2-sm4");
104 if ((ArchKind == llvm::AArch64::ArchKind::ARMV8_6A ||
105 ArchKind == llvm::AArch64::ArchKind::ARMV8_7A ||
106 ArchKind == llvm::AArch64::ArchKind::ARMV8_8A ||
107 ArchKind == llvm::AArch64::ArchKind::ARMV9_1A ||
108 ArchKind == llvm::AArch64::ArchKind::ARMV9_2A ||
109 ArchKind == llvm::AArch64::ArchKind::ARMV9_3A) &&
111 Features.push_back(
"+f32mm");
119 std::vector<StringRef> &Features) {
120 std::pair<StringRef, StringRef>
Split = Mcpu.split(
"+");
122 llvm::AArch64::ArchKind ArchKind = llvm::AArch64::ArchKind::ARMV8A;
125 CPU = llvm::sys::getHostCPUName();
127 if (CPU ==
"generic") {
128 Features.push_back(
"+neon");
130 ArchKind = llvm::AArch64::parseCPUArch(CPU);
134 uint64_t Extension = llvm::AArch64::getDefaultExtensions(CPU, ArchKind);
135 if (!llvm::AArch64::getExtensionFeatures(Extension, Features))
139 if (
Split.second.size() &&
149 std::vector<StringRef> &Features) {
151 std::pair<StringRef, StringRef>
Split = StringRef(MarchLowerCase).split(
"+");
153 llvm::AArch64::ArchKind ArchKind = llvm::AArch64::parseArch(
Split.first);
154 if (
Split.first ==
"native")
155 ArchKind = llvm::AArch64::getCPUArchKind(llvm::sys::getHostCPUName().str());
156 if (ArchKind == llvm::AArch64::ArchKind::INVALID ||
163 if ((ArchKind == llvm::AArch64::ArchKind::ARMV9A ||
164 ArchKind == llvm::AArch64::ArchKind::ARMV9_1A ||
165 ArchKind == llvm::AArch64::ArchKind::ARMV9_2A)) {
166 Features.push_back(
"+sve");
167 Features.push_back(
"+sve2");
170 if ((
Split.second.size() &&
180 std::vector<StringRef> &Features) {
192 std::vector<StringRef> &Features) {
195 std::vector<StringRef> MtuneFeatures;
201 if (MtuneLowerCase ==
"native")
202 MtuneLowerCase =
std::string(llvm::sys::getHostCPUName());
203 if (MtuneLowerCase ==
"cyclone" ||
204 StringRef(MtuneLowerCase).startswith(
"apple")) {
205 Features.push_back(
"+zcm");
206 Features.push_back(
"+zcz");
214 std::vector<StringRef> &Features) {
216 std::vector<StringRef> DecodedFeature;
225 const llvm::Triple &Triple,
227 std::vector<StringRef> &Features,
232 Features.push_back(
"+neon");
233 llvm::StringRef WaMArch;
236 Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler))
237 for (StringRef
Value : A->getValues())
238 if (
Value.startswith(
"-march="))
239 WaMArch =
Value.substr(7);
243 if (!WaMArch.empty())
245 else if ((A = Args.getLastArg(options::OPT_march_EQ)))
247 else if ((A = Args.getLastArg(options::OPT_mcpu_EQ)))
256 if (success && (A = Args.getLastArg(clang::driver::options::OPT_mtune_EQ)))
259 else if (success && (A = Args.getLastArg(options::OPT_mcpu_EQ)))
268 auto Diag = D.
Diag(diag::err_drv_clang_unsupported);
271 if (!WaMArch.empty())
272 Diag <<
"-march=" + WaMArch.str();
274 Diag << A->getAsString(Args);
277 if (Args.getLastArg(options::OPT_mgeneral_regs_only)) {
278 Features.push_back(
"-fp-armv8");
279 Features.push_back(
"-crypto");
280 Features.push_back(
"-neon");
283 if (Arg *A = Args.getLastArg(options::OPT_mtp_mode_EQ)) {
284 StringRef Mtp = A->getValue();
286 Features.push_back(
"+tpidr-el3");
287 else if (Mtp ==
"el2")
288 Features.push_back(
"+tpidr-el2");
289 else if (Mtp ==
"el1")
290 Features.push_back(
"+tpidr-el1");
291 else if (Mtp !=
"el0")
292 D.
Diag(diag::err_drv_invalid_mtp) << A->getAsString(Args);
296 if (Arg *A = Args.getLastArg(options::OPT_mharden_sls_EQ)) {
297 StringRef
Scope = A->getValue();
298 bool EnableRetBr =
false;
299 bool EnableBlr =
false;
300 bool DisableComdat =
false;
301 if (
Scope !=
"none") {
303 Scope.split(Opts,
",");
304 for (
auto Opt : Opts) {
311 if (Opt ==
"retbr") {
319 if (Opt ==
"comdat") {
320 DisableComdat =
false;
323 if (Opt ==
"nocomdat") {
324 DisableComdat =
true;
327 D.
Diag(diag::err_invalid_sls_hardening)
328 <<
Scope << A->getAsString(Args);
334 Features.push_back(
"+harden-sls-retbr");
336 Features.push_back(
"+harden-sls-blr");
338 Features.push_back(
"+harden-sls-nocomdat");
343 if (Arg *A = Args.getLastArg(options::OPT_mcrc, options::OPT_mnocrc)) {
344 if (A->getOption().matches(options::OPT_mcrc))
345 Features.push_back(
"+crc");
347 Features.push_back(
"-crc");
352 bool HasNoSM4 =
false;
353 bool HasNoSHA3 =
false;
354 bool HasNoSHA2 =
false;
355 bool HasNoAES =
false;
357 bool HasSHA3 =
false;
358 bool HasSHA2 =
false;
360 bool HasCrypto =
false;
361 bool HasNoCrypto =
false;
362 int FullFP16Pos = -1;
363 int NoFullFP16Pos = -1;
365 int NoFP16FMLPos = -1;
366 int ArchFeatPos = -1;
368 for (
auto I = Features.begin(), E = Features.end(); I != E; I++) {
369 if (*I ==
"+v8a") V8Version = 0;
370 else if (*I ==
"+v8.1a") V8Version = 1;
371 else if (*I ==
"+v8.2a") V8Version = 2;
372 else if (*I ==
"+v8.3a") V8Version = 3;
373 else if (*I ==
"+v8.4a") V8Version = 4;
374 else if (*I ==
"+v8.5a") V8Version = 5;
375 else if (*I ==
"+v8.6a") V8Version = 6;
376 else if (*I ==
"+v8.7a") V8Version = 7;
377 else if (*I ==
"+v8.8a") V8Version = 8;
378 else if (*I ==
"+v8.9a") V8Version = 9;
379 else if (*I ==
"+v9a") V9Version = 0;
380 else if (*I ==
"+v9.1a") V9Version = 1;
381 else if (*I ==
"+v9.2a") V9Version = 2;
382 else if (*I ==
"+v9.3a") V9Version = 3;
383 else if (*I ==
"+v9.4a") V9Version = 4;
384 else if (*I ==
"+sm4") HasSM4 =
true;
385 else if (*I ==
"+sha3") HasSHA3 =
true;
386 else if (*I ==
"+sha2") HasSHA2 =
true;
387 else if (*I ==
"+aes") HasAES =
true;
388 else if (*I ==
"-sm4") HasNoSM4 =
true;
389 else if (*I ==
"-sha3") HasNoSHA3 =
true;
390 else if (*I ==
"-sha2") HasNoSHA2 =
true;
391 else if (*I ==
"-aes") HasNoAES =
true;
392 else if (*I ==
"+fp16fml") FP16FMLPos = I - Features.begin();
393 else if (*I ==
"-fp16fml") NoFP16FMLPos = I - Features.begin();
394 else if (*I ==
"-fullfp16") NoFullFP16Pos = I - Features.begin();
395 else if (*I ==
"+fullfp16") FullFP16Pos = I - Features.begin();
397 else if (*I ==
"+crypto") {
400 }
else if (*I ==
"-crypto") {
405 if (ArchFeatPos == -1 && (V8Version != -1 || V9Version != -1))
406 ArchFeatPos = I - Features.begin();
412 if (V8Version >= 4) {
414 if (FullFP16Pos > NoFullFP16Pos && FullFP16Pos > FP16FMLPos && FullFP16Pos > NoFP16FMLPos)
417 Features.push_back(
"+fp16fml");
419 goto fp16_fml_fallthrough;
421 fp16_fml_fallthrough:
425 if (NoFullFP16Pos > FP16FMLPos)
426 Features.push_back(
"-fp16fml");
428 else if (NoFullFP16Pos < FP16FMLPos)
429 Features.push_back(
"+fullfp16");
437 if (V8Version >= 4 || V9Version >= 0) {
438 if (HasCrypto && !HasNoCrypto) {
443 Features.push_back(
"+sm4");
445 Features.push_back(
"+sha3");
447 Features.push_back(
"+sha2");
449 Features.push_back(
"+aes");
450 }
else if (HasNoCrypto) {
455 Features.push_back(
"-sm4");
457 Features.push_back(
"-sha3");
459 Features.push_back(
"-sha2");
461 Features.push_back(
"-aes");
464 if (HasCrypto && !HasNoCrypto) {
466 Features.push_back(
"+sha2");
468 Features.push_back(
"+aes");
469 }
else if (HasNoCrypto) {
471 Features.push_back(
"-sha2");
473 Features.push_back(
"-aes");
474 if (V8Version == 2 || V8Version == 3) {
475 Features.push_back(
"-sm4");
476 Features.push_back(
"-sha3");
483 if (V8Version >= 6 || V9Version >= 1)
484 Features.insert(std::next(Features.begin() + ArchFeatPos),
489 if (V8Version >= 8 || V9Version >= 3)
490 Features.insert(std::next(Features.begin() + ArchFeatPos),
493 if (Arg *A = Args.getLastArg(options::OPT_mno_unaligned_access,
494 options::OPT_munaligned_access)) {
495 if (A->getOption().matches(options::OPT_mno_unaligned_access))
496 Features.push_back(
"+strict-align");
497 }
else if (Triple.isOSOpenBSD())
498 Features.push_back(
"+strict-align");
500 if (Args.hasArg(options::OPT_ffixed_x1))
501 Features.push_back(
"+reserve-x1");
503 if (Args.hasArg(options::OPT_ffixed_x2))
504 Features.push_back(
"+reserve-x2");
506 if (Args.hasArg(options::OPT_ffixed_x3))
507 Features.push_back(
"+reserve-x3");
509 if (Args.hasArg(options::OPT_ffixed_x4))
510 Features.push_back(
"+reserve-x4");
512 if (Args.hasArg(options::OPT_ffixed_x5))
513 Features.push_back(
"+reserve-x5");
515 if (Args.hasArg(options::OPT_ffixed_x6))
516 Features.push_back(
"+reserve-x6");
518 if (Args.hasArg(options::OPT_ffixed_x7))
519 Features.push_back(
"+reserve-x7");
521 if (Args.hasArg(options::OPT_ffixed_x9))
522 Features.push_back(
"+reserve-x9");
524 if (Args.hasArg(options::OPT_ffixed_x10))
525 Features.push_back(
"+reserve-x10");
527 if (Args.hasArg(options::OPT_ffixed_x11))
528 Features.push_back(
"+reserve-x11");
530 if (Args.hasArg(options::OPT_ffixed_x12))
531 Features.push_back(
"+reserve-x12");
533 if (Args.hasArg(options::OPT_ffixed_x13))
534 Features.push_back(
"+reserve-x13");
536 if (Args.hasArg(options::OPT_ffixed_x14))
537 Features.push_back(
"+reserve-x14");
539 if (Args.hasArg(options::OPT_ffixed_x15))
540 Features.push_back(
"+reserve-x15");
542 if (Args.hasArg(options::OPT_ffixed_x18))
543 Features.push_back(
"+reserve-x18");
545 if (Args.hasArg(options::OPT_ffixed_x20))
546 Features.push_back(
"+reserve-x20");
548 if (Args.hasArg(options::OPT_ffixed_x21))
549 Features.push_back(
"+reserve-x21");
551 if (Args.hasArg(options::OPT_ffixed_x22))
552 Features.push_back(
"+reserve-x22");
554 if (Args.hasArg(options::OPT_ffixed_x23))
555 Features.push_back(
"+reserve-x23");
557 if (Args.hasArg(options::OPT_ffixed_x24))
558 Features.push_back(
"+reserve-x24");
560 if (Args.hasArg(options::OPT_ffixed_x25))
561 Features.push_back(
"+reserve-x25");
563 if (Args.hasArg(options::OPT_ffixed_x26))
564 Features.push_back(
"+reserve-x26");
566 if (Args.hasArg(options::OPT_ffixed_x27))
567 Features.push_back(
"+reserve-x27");
569 if (Args.hasArg(options::OPT_ffixed_x28))
570 Features.push_back(
"+reserve-x28");
572 if (Args.hasArg(options::OPT_ffixed_x30))
573 Features.push_back(
"+reserve-x30");
575 if (Args.hasArg(options::OPT_fcall_saved_x8))
576 Features.push_back(
"+call-saved-x8");
578 if (Args.hasArg(options::OPT_fcall_saved_x9))
579 Features.push_back(
"+call-saved-x9");
581 if (Args.hasArg(options::OPT_fcall_saved_x10))
582 Features.push_back(
"+call-saved-x10");
584 if (Args.hasArg(options::OPT_fcall_saved_x11))
585 Features.push_back(
"+call-saved-x11");
587 if (Args.hasArg(options::OPT_fcall_saved_x12))
588 Features.push_back(
"+call-saved-x12");
590 if (Args.hasArg(options::OPT_fcall_saved_x13))
591 Features.push_back(
"+call-saved-x13");
593 if (Args.hasArg(options::OPT_fcall_saved_x14))
594 Features.push_back(
"+call-saved-x14");
596 if (Args.hasArg(options::OPT_fcall_saved_x15))
597 Features.push_back(
"+call-saved-x15");
599 if (Args.hasArg(options::OPT_fcall_saved_x18))
600 Features.push_back(
"+call-saved-x18");
602 if (Args.hasArg(options::OPT_mno_neg_immediates))
603 Features.push_back(
"+no-neg-immediates");
605 if (Arg *A = Args.getLastArg(options::OPT_mfix_cortex_a53_835769,
606 options::OPT_mno_fix_cortex_a53_835769)) {
607 if (A->getOption().matches(options::OPT_mfix_cortex_a53_835769))
608 Features.push_back(
"+fix-cortex-a53-835769");
610 Features.push_back(
"-fix-cortex-a53-835769");
611 }
else if (Triple.isAndroid()) {
613 Features.push_back(
"+fix-cortex-a53-835769");
616 if (Args.getLastArg(options::OPT_mno_bti_at_return_twice))
617 Features.push_back(
"+no-bti-at-return-twice");