1 //===- LLLexer.cpp - Lexer for .ll Files ----------------------------------===//
2 //
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
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // Implement the Lexer for .ll files.
10 //
11 //===----------------------------------------------------------------------===//
12
13 #include "llvm/AsmParser/LLLexer.h"
14 #include "llvm/ADT/APInt.h"
15 #include "llvm/ADT/STLExtras.h"
16 #include "llvm/ADT/StringExtras.h"
17 #include "llvm/ADT/Twine.h"
18 #include "llvm/IR/DerivedTypes.h"
19 #include "llvm/IR/Instruction.h"
20 #include "llvm/Support/ErrorHandling.h"
21 #include "llvm/Support/SourceMgr.h"
22 #include <cassert>
23 #include <cctype>
24 #include <cstdio>
25
26 using namespace llvm;
27
Error(LocTy ErrorLoc,const Twine & Msg) const28 bool LLLexer::Error(LocTy ErrorLoc, const Twine &Msg) const {
29 ErrorInfo = SM.GetMessage(ErrorLoc, SourceMgr::DK_Error, Msg);
30 return true;
31 }
32
Warning(LocTy WarningLoc,const Twine & Msg) const33 void LLLexer::Warning(LocTy WarningLoc, const Twine &Msg) const {
34 SM.PrintMessage(WarningLoc, SourceMgr::DK_Warning, Msg);
35 }
36
37 //===----------------------------------------------------------------------===//
38 // Helper functions.
39 //===----------------------------------------------------------------------===//
40
41 // atoull - Convert an ascii string of decimal digits into the unsigned long
42 // long representation... this does not have to do input error checking,
43 // because we know that the input will be matched by a suitable regex...
44 //
atoull(const char * Buffer,const char * End)45 uint64_t LLLexer::atoull(const char *Buffer, const char *End) {
46 uint64_t Result = 0;
47 for (; Buffer != End; Buffer++) {
48 uint64_t OldRes = Result;
49 Result *= 10;
50 Result += *Buffer-'0';
51 if (Result < OldRes) { // Uh, oh, overflow detected!!!
52 Error("constant bigger than 64 bits detected!");
53 return 0;
54 }
55 }
56 return Result;
57 }
58
HexIntToVal(const char * Buffer,const char * End)59 uint64_t LLLexer::HexIntToVal(const char *Buffer, const char *End) {
60 uint64_t Result = 0;
61 for (; Buffer != End; ++Buffer) {
62 uint64_t OldRes = Result;
63 Result *= 16;
64 Result += hexDigitValue(*Buffer);
65
66 if (Result < OldRes) { // Uh, oh, overflow detected!!!
67 Error("constant bigger than 64 bits detected!");
68 return 0;
69 }
70 }
71 return Result;
72 }
73
HexToIntPair(const char * Buffer,const char * End,uint64_t Pair[2])74 void LLLexer::HexToIntPair(const char *Buffer, const char *End,
75 uint64_t Pair[2]) {
76 Pair[0] = 0;
77 if (End - Buffer >= 16) {
78 for (int i = 0; i < 16; i++, Buffer++) {
79 assert(Buffer != End);
80 Pair[0] *= 16;
81 Pair[0] += hexDigitValue(*Buffer);
82 }
83 }
84 Pair[1] = 0;
85 for (int i = 0; i < 16 && Buffer != End; i++, Buffer++) {
86 Pair[1] *= 16;
87 Pair[1] += hexDigitValue(*Buffer);
88 }
89 if (Buffer != End)
90 Error("constant bigger than 128 bits detected!");
91 }
92
93 /// FP80HexToIntPair - translate an 80 bit FP80 number (20 hexits) into
94 /// { low64, high16 } as usual for an APInt.
FP80HexToIntPair(const char * Buffer,const char * End,uint64_t Pair[2])95 void LLLexer::FP80HexToIntPair(const char *Buffer, const char *End,
96 uint64_t Pair[2]) {
97 Pair[1] = 0;
98 for (int i=0; i<4 && Buffer != End; i++, Buffer++) {
99 assert(Buffer != End);
100 Pair[1] *= 16;
101 Pair[1] += hexDigitValue(*Buffer);
102 }
103 Pair[0] = 0;
104 for (int i = 0; i < 16 && Buffer != End; i++, Buffer++) {
105 Pair[0] *= 16;
106 Pair[0] += hexDigitValue(*Buffer);
107 }
108 if (Buffer != End)
109 Error("constant bigger than 128 bits detected!");
110 }
111
112 // UnEscapeLexed - Run through the specified buffer and change \xx codes to the
113 // appropriate character.
UnEscapeLexed(std::string & Str)114 static void UnEscapeLexed(std::string &Str) {
115 if (Str.empty()) return;
116
117 char *Buffer = &Str[0], *EndBuffer = Buffer+Str.size();
118 char *BOut = Buffer;
119 for (char *BIn = Buffer; BIn != EndBuffer; ) {
120 if (BIn[0] == '\\') {
121 if (BIn < EndBuffer-1 && BIn[1] == '\\') {
122 *BOut++ = '\\'; // Two \ becomes one
123 BIn += 2;
124 } else if (BIn < EndBuffer-2 &&
125 isxdigit(static_cast<unsigned char>(BIn[1])) &&
126 isxdigit(static_cast<unsigned char>(BIn[2]))) {
127 *BOut = hexDigitValue(BIn[1]) * 16 + hexDigitValue(BIn[2]);
128 BIn += 3; // Skip over handled chars
129 ++BOut;
130 } else {
131 *BOut++ = *BIn++;
132 }
133 } else {
134 *BOut++ = *BIn++;
135 }
136 }
137 Str.resize(BOut-Buffer);
138 }
139
140 /// isLabelChar - Return true for [-a-zA-Z$._0-9].
isLabelChar(char C)141 static bool isLabelChar(char C) {
142 return isalnum(static_cast<unsigned char>(C)) || C == '-' || C == '$' ||
143 C == '.' || C == '_';
144 }
145
146 /// isLabelTail - Return true if this pointer points to a valid end of a label.
isLabelTail(const char * CurPtr)147 static const char *isLabelTail(const char *CurPtr) {
148 while (true) {
149 if (CurPtr[0] == ':') return CurPtr+1;
150 if (!isLabelChar(CurPtr[0])) return nullptr;
151 ++CurPtr;
152 }
153 }
154
155 //===----------------------------------------------------------------------===//
156 // Lexer definition.
157 //===----------------------------------------------------------------------===//
158
LLLexer(StringRef StartBuf,SourceMgr & SM,SMDiagnostic & Err,LLVMContext & C)159 LLLexer::LLLexer(StringRef StartBuf, SourceMgr &SM, SMDiagnostic &Err,
160 LLVMContext &C)
161 : CurBuf(StartBuf), ErrorInfo(Err), SM(SM), Context(C) {
162 CurPtr = CurBuf.begin();
163 }
164
getNextChar()165 int LLLexer::getNextChar() {
166 char CurChar = *CurPtr++;
167 switch (CurChar) {
168 default: return (unsigned char)CurChar;
169 case 0:
170 // A nul character in the stream is either the end of the current buffer or
171 // a random nul in the file. Disambiguate that here.
172 if (CurPtr-1 != CurBuf.end())
173 return 0; // Just whitespace.
174
175 // Otherwise, return end of file.
176 --CurPtr; // Another call to lex will return EOF again.
177 return EOF;
178 }
179 }
180
LexToken()181 lltok::Kind LLLexer::LexToken() {
182 while (true) {
183 TokStart = CurPtr;
184
185 int CurChar = getNextChar();
186 switch (CurChar) {
187 default:
188 // Handle letters: [a-zA-Z_]
189 if (isalpha(static_cast<unsigned char>(CurChar)) || CurChar == '_')
190 return LexIdentifier();
191
192 return lltok::Error;
193 case EOF: return lltok::Eof;
194 case 0:
195 case ' ':
196 case '\t':
197 case '\n':
198 case '\r':
199 // Ignore whitespace.
200 continue;
201 case '+': return LexPositive();
202 case '@': return LexAt();
203 case '$': return LexDollar();
204 case '%': return LexPercent();
205 case '"': return LexQuote();
206 case '.':
207 if (const char *Ptr = isLabelTail(CurPtr)) {
208 CurPtr = Ptr;
209 StrVal.assign(TokStart, CurPtr-1);
210 return lltok::LabelStr;
211 }
212 if (CurPtr[0] == '.' && CurPtr[1] == '.') {
213 CurPtr += 2;
214 return lltok::dotdotdot;
215 }
216 return lltok::Error;
217 case ';':
218 SkipLineComment();
219 continue;
220 case '!': return LexExclaim();
221 case '^':
222 return LexCaret();
223 case ':':
224 return lltok::colon;
225 case '#': return LexHash();
226 case '0': case '1': case '2': case '3': case '4':
227 case '5': case '6': case '7': case '8': case '9':
228 case '-':
229 return LexDigitOrNegative();
230 case '=': return lltok::equal;
231 case '[': return lltok::lsquare;
232 case ']': return lltok::rsquare;
233 case '{': return lltok::lbrace;
234 case '}': return lltok::rbrace;
235 case '<': return lltok::less;
236 case '>': return lltok::greater;
237 case '(': return lltok::lparen;
238 case ')': return lltok::rparen;
239 case ',': return lltok::comma;
240 case '*': return lltok::star;
241 case '|': return lltok::bar;
242 }
243 }
244 }
245
SkipLineComment()246 void LLLexer::SkipLineComment() {
247 while (true) {
248 if (CurPtr[0] == '\n' || CurPtr[0] == '\r' || getNextChar() == EOF)
249 return;
250 }
251 }
252
253 /// Lex all tokens that start with an @ character.
254 /// GlobalVar @\"[^\"]*\"
255 /// GlobalVar @[-a-zA-Z$._][-a-zA-Z$._0-9]*
256 /// GlobalVarID @[0-9]+
LexAt()257 lltok::Kind LLLexer::LexAt() {
258 return LexVar(lltok::GlobalVar, lltok::GlobalID);
259 }
260
LexDollar()261 lltok::Kind LLLexer::LexDollar() {
262 if (const char *Ptr = isLabelTail(TokStart)) {
263 CurPtr = Ptr;
264 StrVal.assign(TokStart, CurPtr - 1);
265 return lltok::LabelStr;
266 }
267
268 // Handle DollarStringConstant: $\"[^\"]*\"
269 if (CurPtr[0] == '"') {
270 ++CurPtr;
271
272 while (true) {
273 int CurChar = getNextChar();
274
275 if (CurChar == EOF) {
276 Error("end of file in COMDAT variable name");
277 return lltok::Error;
278 }
279 if (CurChar == '"') {
280 StrVal.assign(TokStart + 2, CurPtr - 1);
281 UnEscapeLexed(StrVal);
282 if (StringRef(StrVal).contains(0)) {
283 Error("Null bytes are not allowed in names");
284 return lltok::Error;
285 }
286 return lltok::ComdatVar;
287 }
288 }
289 }
290
291 // Handle ComdatVarName: $[-a-zA-Z$._][-a-zA-Z$._0-9]*
292 if (ReadVarName())
293 return lltok::ComdatVar;
294
295 return lltok::Error;
296 }
297
298 /// ReadString - Read a string until the closing quote.
ReadString(lltok::Kind kind)299 lltok::Kind LLLexer::ReadString(lltok::Kind kind) {
300 const char *Start = CurPtr;
301 while (true) {
302 int CurChar = getNextChar();
303
304 if (CurChar == EOF) {
305 Error("end of file in string constant");
306 return lltok::Error;
307 }
308 if (CurChar == '"') {
309 StrVal.assign(Start, CurPtr-1);
310 UnEscapeLexed(StrVal);
311 return kind;
312 }
313 }
314 }
315
316 /// ReadVarName - Read the rest of a token containing a variable name.
ReadVarName()317 bool LLLexer::ReadVarName() {
318 const char *NameStart = CurPtr;
319 if (isalpha(static_cast<unsigned char>(CurPtr[0])) ||
320 CurPtr[0] == '-' || CurPtr[0] == '$' ||
321 CurPtr[0] == '.' || CurPtr[0] == '_') {
322 ++CurPtr;
323 while (isalnum(static_cast<unsigned char>(CurPtr[0])) ||
324 CurPtr[0] == '-' || CurPtr[0] == '$' ||
325 CurPtr[0] == '.' || CurPtr[0] == '_')
326 ++CurPtr;
327
328 StrVal.assign(NameStart, CurPtr);
329 return true;
330 }
331 return false;
332 }
333
334 // Lex an ID: [0-9]+. On success, the ID is stored in UIntVal and Token is
335 // returned, otherwise the Error token is returned.
LexUIntID(lltok::Kind Token)336 lltok::Kind LLLexer::LexUIntID(lltok::Kind Token) {
337 if (!isdigit(static_cast<unsigned char>(CurPtr[0])))
338 return lltok::Error;
339
340 for (++CurPtr; isdigit(static_cast<unsigned char>(CurPtr[0])); ++CurPtr)
341 /*empty*/;
342
343 uint64_t Val = atoull(TokStart + 1, CurPtr);
344 if ((unsigned)Val != Val)
345 Error("invalid value number (too large)!");
346 UIntVal = unsigned(Val);
347 return Token;
348 }
349
LexVar(lltok::Kind Var,lltok::Kind VarID)350 lltok::Kind LLLexer::LexVar(lltok::Kind Var, lltok::Kind VarID) {
351 // Handle StringConstant: \"[^\"]*\"
352 if (CurPtr[0] == '"') {
353 ++CurPtr;
354
355 while (true) {
356 int CurChar = getNextChar();
357
358 if (CurChar == EOF) {
359 Error("end of file in global variable name");
360 return lltok::Error;
361 }
362 if (CurChar == '"') {
363 StrVal.assign(TokStart+2, CurPtr-1);
364 UnEscapeLexed(StrVal);
365 if (StringRef(StrVal).contains(0)) {
366 Error("Null bytes are not allowed in names");
367 return lltok::Error;
368 }
369 return Var;
370 }
371 }
372 }
373
374 // Handle VarName: [-a-zA-Z$._][-a-zA-Z$._0-9]*
375 if (ReadVarName())
376 return Var;
377
378 // Handle VarID: [0-9]+
379 return LexUIntID(VarID);
380 }
381
382 /// Lex all tokens that start with a % character.
383 /// LocalVar ::= %\"[^\"]*\"
384 /// LocalVar ::= %[-a-zA-Z$._][-a-zA-Z$._0-9]*
385 /// LocalVarID ::= %[0-9]+
LexPercent()386 lltok::Kind LLLexer::LexPercent() {
387 return LexVar(lltok::LocalVar, lltok::LocalVarID);
388 }
389
390 /// Lex all tokens that start with a " character.
391 /// QuoteLabel "[^"]+":
392 /// StringConstant "[^"]*"
LexQuote()393 lltok::Kind LLLexer::LexQuote() {
394 lltok::Kind kind = ReadString(lltok::StringConstant);
395 if (kind == lltok::Error || kind == lltok::Eof)
396 return kind;
397
398 if (CurPtr[0] == ':') {
399 ++CurPtr;
400 if (StringRef(StrVal).contains(0)) {
401 Error("Null bytes are not allowed in names");
402 kind = lltok::Error;
403 } else {
404 kind = lltok::LabelStr;
405 }
406 }
407
408 return kind;
409 }
410
411 /// Lex all tokens that start with a ! character.
412 /// !foo
413 /// !
LexExclaim()414 lltok::Kind LLLexer::LexExclaim() {
415 // Lex a metadata name as a MetadataVar.
416 if (isalpha(static_cast<unsigned char>(CurPtr[0])) ||
417 CurPtr[0] == '-' || CurPtr[0] == '$' ||
418 CurPtr[0] == '.' || CurPtr[0] == '_' || CurPtr[0] == '\\') {
419 ++CurPtr;
420 while (isalnum(static_cast<unsigned char>(CurPtr[0])) ||
421 CurPtr[0] == '-' || CurPtr[0] == '$' ||
422 CurPtr[0] == '.' || CurPtr[0] == '_' || CurPtr[0] == '\\')
423 ++CurPtr;
424
425 StrVal.assign(TokStart+1, CurPtr); // Skip !
426 UnEscapeLexed(StrVal);
427 return lltok::MetadataVar;
428 }
429 return lltok::exclaim;
430 }
431
432 /// Lex all tokens that start with a ^ character.
433 /// SummaryID ::= ^[0-9]+
LexCaret()434 lltok::Kind LLLexer::LexCaret() {
435 // Handle SummaryID: ^[0-9]+
436 return LexUIntID(lltok::SummaryID);
437 }
438
439 /// Lex all tokens that start with a # character.
440 /// AttrGrpID ::= #[0-9]+
441 /// Hash ::= #
LexHash()442 lltok::Kind LLLexer::LexHash() {
443 // Handle AttrGrpID: #[0-9]+
444 if (isdigit(static_cast<unsigned char>(CurPtr[0])))
445 return LexUIntID(lltok::AttrGrpID);
446 return lltok::hash;
447 }
448
449 /// Lex a label, integer type, keyword, or hexadecimal integer constant.
450 /// Label [-a-zA-Z$._0-9]+:
451 /// IntegerType i[0-9]+
452 /// Keyword sdiv, float, ...
453 /// HexIntConstant [us]0x[0-9A-Fa-f]+
LexIdentifier()454 lltok::Kind LLLexer::LexIdentifier() {
455 const char *StartChar = CurPtr;
456 const char *IntEnd = CurPtr[-1] == 'i' ? nullptr : StartChar;
457 const char *KeywordEnd = nullptr;
458
459 for (; isLabelChar(*CurPtr); ++CurPtr) {
460 // If we decide this is an integer, remember the end of the sequence.
461 if (!IntEnd && !isdigit(static_cast<unsigned char>(*CurPtr)))
462 IntEnd = CurPtr;
463 if (!KeywordEnd && !isalnum(static_cast<unsigned char>(*CurPtr)) &&
464 *CurPtr != '_')
465 KeywordEnd = CurPtr;
466 }
467
468 // If we stopped due to a colon, unless we were directed to ignore it,
469 // this really is a label.
470 if (!IgnoreColonInIdentifiers && *CurPtr == ':') {
471 StrVal.assign(StartChar-1, CurPtr++);
472 return lltok::LabelStr;
473 }
474
475 // Otherwise, this wasn't a label. If this was valid as an integer type,
476 // return it.
477 if (!IntEnd) IntEnd = CurPtr;
478 if (IntEnd != StartChar) {
479 CurPtr = IntEnd;
480 uint64_t NumBits = atoull(StartChar, CurPtr);
481 if (NumBits < IntegerType::MIN_INT_BITS ||
482 NumBits > IntegerType::MAX_INT_BITS) {
483 Error("bitwidth for integer type out of range!");
484 return lltok::Error;
485 }
486 TyVal = IntegerType::get(Context, NumBits);
487 return lltok::Type;
488 }
489
490 // Otherwise, this was a letter sequence. See which keyword this is.
491 if (!KeywordEnd) KeywordEnd = CurPtr;
492 CurPtr = KeywordEnd;
493 --StartChar;
494 StringRef Keyword(StartChar, CurPtr - StartChar);
495
496 #define KEYWORD(STR) \
497 do { \
498 if (Keyword == #STR) \
499 return lltok::kw_##STR; \
500 } while (false)
501
502 KEYWORD(true); KEYWORD(false);
503 KEYWORD(declare); KEYWORD(define);
504 KEYWORD(global); KEYWORD(constant);
505
506 KEYWORD(dso_local);
507 KEYWORD(dso_preemptable);
508
509 KEYWORD(private);
510 KEYWORD(internal);
511 KEYWORD(available_externally);
512 KEYWORD(linkonce);
513 KEYWORD(linkonce_odr);
514 KEYWORD(weak); // Use as a linkage, and a modifier for "cmpxchg".
515 KEYWORD(weak_odr);
516 KEYWORD(appending);
517 KEYWORD(dllimport);
518 KEYWORD(dllexport);
519 KEYWORD(common);
520 KEYWORD(default);
521 KEYWORD(hidden);
522 KEYWORD(protected);
523 KEYWORD(unnamed_addr);
524 KEYWORD(local_unnamed_addr);
525 KEYWORD(externally_initialized);
526 KEYWORD(extern_weak);
527 KEYWORD(external);
528 KEYWORD(thread_local);
529 KEYWORD(localdynamic);
530 KEYWORD(initialexec);
531 KEYWORD(localexec);
532 KEYWORD(zeroinitializer);
533 KEYWORD(undef);
534 KEYWORD(null);
535 KEYWORD(none);
536 KEYWORD(poison);
537 KEYWORD(to);
538 KEYWORD(caller);
539 KEYWORD(within);
540 KEYWORD(from);
541 KEYWORD(tail);
542 KEYWORD(musttail);
543 KEYWORD(notail);
544 KEYWORD(target);
545 KEYWORD(triple);
546 KEYWORD(source_filename);
547 KEYWORD(unwind);
548 KEYWORD(datalayout);
549 KEYWORD(volatile);
550 KEYWORD(atomic);
551 KEYWORD(unordered);
552 KEYWORD(monotonic);
553 KEYWORD(acquire);
554 KEYWORD(release);
555 KEYWORD(acq_rel);
556 KEYWORD(seq_cst);
557 KEYWORD(syncscope);
558
559 KEYWORD(nnan);
560 KEYWORD(ninf);
561 KEYWORD(nsz);
562 KEYWORD(arcp);
563 KEYWORD(contract);
564 KEYWORD(reassoc);
565 KEYWORD(afn);
566 KEYWORD(fast);
567 KEYWORD(nuw);
568 KEYWORD(nsw);
569 KEYWORD(nusw);
570 KEYWORD(exact);
571 KEYWORD(disjoint);
572 KEYWORD(inbounds);
573 KEYWORD(nneg);
574 KEYWORD(inrange);
575 KEYWORD(addrspace);
576 KEYWORD(section);
577 KEYWORD(partition);
578 KEYWORD(code_model);
579 KEYWORD(alias);
580 KEYWORD(ifunc);
581 KEYWORD(module);
582 KEYWORD(asm);
583 KEYWORD(sideeffect);
584 KEYWORD(inteldialect);
585 KEYWORD(gc);
586 KEYWORD(prefix);
587 KEYWORD(prologue);
588
589 KEYWORD(no_sanitize_address);
590 KEYWORD(no_sanitize_hwaddress);
591 KEYWORD(sanitize_address_dyninit);
592
593 KEYWORD(ccc);
594 KEYWORD(fastcc);
595 KEYWORD(coldcc);
596 KEYWORD(cfguard_checkcc);
597 KEYWORD(x86_stdcallcc);
598 KEYWORD(x86_fastcallcc);
599 KEYWORD(x86_thiscallcc);
600 KEYWORD(x86_vectorcallcc);
601 KEYWORD(arm_apcscc);
602 KEYWORD(arm_aapcscc);
603 KEYWORD(arm_aapcs_vfpcc);
604 KEYWORD(aarch64_vector_pcs);
605 KEYWORD(aarch64_sve_vector_pcs);
606 KEYWORD(aarch64_sme_preservemost_from_x0);
607 KEYWORD(aarch64_sme_preservemost_from_x1);
608 KEYWORD(aarch64_sme_preservemost_from_x2);
609 KEYWORD(msp430_intrcc);
610 KEYWORD(avr_intrcc);
611 KEYWORD(avr_signalcc);
612 KEYWORD(ptx_kernel);
613 KEYWORD(ptx_device);
614 KEYWORD(spir_kernel);
615 KEYWORD(spir_func);
616 KEYWORD(intel_ocl_bicc);
617 KEYWORD(x86_64_sysvcc);
618 KEYWORD(win64cc);
619 KEYWORD(x86_regcallcc);
620 KEYWORD(swiftcc);
621 KEYWORD(swifttailcc);
622 KEYWORD(anyregcc);
623 KEYWORD(preserve_mostcc);
624 KEYWORD(preserve_allcc);
625 KEYWORD(preserve_nonecc);
626 KEYWORD(ghccc);
627 KEYWORD(x86_intrcc);
628 KEYWORD(hhvmcc);
629 KEYWORD(hhvm_ccc);
630 KEYWORD(cxx_fast_tlscc);
631 KEYWORD(amdgpu_vs);
632 KEYWORD(amdgpu_ls);
633 KEYWORD(amdgpu_hs);
634 KEYWORD(amdgpu_es);
635 KEYWORD(amdgpu_gs);
636 KEYWORD(amdgpu_ps);
637 KEYWORD(amdgpu_cs);
638 KEYWORD(amdgpu_cs_chain);
639 KEYWORD(amdgpu_cs_chain_preserve);
640 KEYWORD(amdgpu_kernel);
641 KEYWORD(amdgpu_gfx);
642 KEYWORD(tailcc);
643 KEYWORD(m68k_rtdcc);
644 KEYWORD(graalcc);
645 KEYWORD(riscv_vector_cc);
646
647 KEYWORD(cc);
648 KEYWORD(c);
649
650 KEYWORD(attributes);
651 KEYWORD(sync);
652 KEYWORD(async);
653
654 #define GET_ATTR_NAMES
655 #define ATTRIBUTE_ENUM(ENUM_NAME, DISPLAY_NAME) \
656 KEYWORD(DISPLAY_NAME);
657 #include "llvm/IR/Attributes.inc"
658
659 KEYWORD(read);
660 KEYWORD(write);
661 KEYWORD(readwrite);
662 KEYWORD(argmem);
663 KEYWORD(inaccessiblemem);
664 KEYWORD(argmemonly);
665 KEYWORD(inaccessiblememonly);
666 KEYWORD(inaccessiblemem_or_argmemonly);
667
668 // nofpclass attribute
669 KEYWORD(all);
670 KEYWORD(nan);
671 KEYWORD(snan);
672 KEYWORD(qnan);
673 KEYWORD(inf);
674 // ninf already a keyword
675 KEYWORD(pinf);
676 KEYWORD(norm);
677 KEYWORD(nnorm);
678 KEYWORD(pnorm);
679 // sub already a keyword
680 KEYWORD(nsub);
681 KEYWORD(psub);
682 KEYWORD(zero);
683 KEYWORD(nzero);
684 KEYWORD(pzero);
685
686 KEYWORD(type);
687 KEYWORD(opaque);
688
689 KEYWORD(comdat);
690
691 // Comdat types
692 KEYWORD(any);
693 KEYWORD(exactmatch);
694 KEYWORD(largest);
695 KEYWORD(nodeduplicate);
696 KEYWORD(samesize);
697
698 KEYWORD(eq); KEYWORD(ne); KEYWORD(slt); KEYWORD(sgt); KEYWORD(sle);
699 KEYWORD(sge); KEYWORD(ult); KEYWORD(ugt); KEYWORD(ule); KEYWORD(uge);
700 KEYWORD(oeq); KEYWORD(one); KEYWORD(olt); KEYWORD(ogt); KEYWORD(ole);
701 KEYWORD(oge); KEYWORD(ord); KEYWORD(uno); KEYWORD(ueq); KEYWORD(une);
702
703 KEYWORD(xchg); KEYWORD(nand); KEYWORD(max); KEYWORD(min); KEYWORD(umax);
704 KEYWORD(umin); KEYWORD(fmax); KEYWORD(fmin);
705 KEYWORD(uinc_wrap);
706 KEYWORD(udec_wrap);
707
708 KEYWORD(splat);
709 KEYWORD(vscale);
710 KEYWORD(x);
711 KEYWORD(blockaddress);
712 KEYWORD(dso_local_equivalent);
713 KEYWORD(no_cfi);
714 KEYWORD(ptrauth);
715
716 // Metadata types.
717 KEYWORD(distinct);
718
719 // Use-list order directives.
720 KEYWORD(uselistorder);
721 KEYWORD(uselistorder_bb);
722
723 KEYWORD(personality);
724 KEYWORD(cleanup);
725 KEYWORD(catch);
726 KEYWORD(filter);
727
728 // Summary index keywords.
729 KEYWORD(path);
730 KEYWORD(hash);
731 KEYWORD(gv);
732 KEYWORD(guid);
733 KEYWORD(name);
734 KEYWORD(summaries);
735 KEYWORD(flags);
736 KEYWORD(blockcount);
737 KEYWORD(linkage);
738 KEYWORD(visibility);
739 KEYWORD(notEligibleToImport);
740 KEYWORD(live);
741 KEYWORD(dsoLocal);
742 KEYWORD(canAutoHide);
743 KEYWORD(importType);
744 KEYWORD(definition);
745 KEYWORD(declaration);
746 KEYWORD(function);
747 KEYWORD(insts);
748 KEYWORD(funcFlags);
749 KEYWORD(readNone);
750 KEYWORD(readOnly);
751 KEYWORD(noRecurse);
752 KEYWORD(returnDoesNotAlias);
753 KEYWORD(noInline);
754 KEYWORD(alwaysInline);
755 KEYWORD(noUnwind);
756 KEYWORD(mayThrow);
757 KEYWORD(hasUnknownCall);
758 KEYWORD(mustBeUnreachable);
759 KEYWORD(calls);
760 KEYWORD(callee);
761 KEYWORD(params);
762 KEYWORD(param);
763 KEYWORD(hotness);
764 KEYWORD(unknown);
765 KEYWORD(critical);
766 KEYWORD(relbf);
767 KEYWORD(variable);
768 KEYWORD(vTableFuncs);
769 KEYWORD(virtFunc);
770 KEYWORD(aliasee);
771 KEYWORD(refs);
772 KEYWORD(typeIdInfo);
773 KEYWORD(typeTests);
774 KEYWORD(typeTestAssumeVCalls);
775 KEYWORD(typeCheckedLoadVCalls);
776 KEYWORD(typeTestAssumeConstVCalls);
777 KEYWORD(typeCheckedLoadConstVCalls);
778 KEYWORD(vFuncId);
779 KEYWORD(offset);
780 KEYWORD(args);
781 KEYWORD(typeid);
782 KEYWORD(typeidCompatibleVTable);
783 KEYWORD(summary);
784 KEYWORD(typeTestRes);
785 KEYWORD(kind);
786 KEYWORD(unsat);
787 KEYWORD(byteArray);
788 KEYWORD(inline);
789 KEYWORD(single);
790 KEYWORD(allOnes);
791 KEYWORD(sizeM1BitWidth);
792 KEYWORD(alignLog2);
793 KEYWORD(sizeM1);
794 KEYWORD(bitMask);
795 KEYWORD(inlineBits);
796 KEYWORD(vcall_visibility);
797 KEYWORD(wpdResolutions);
798 KEYWORD(wpdRes);
799 KEYWORD(indir);
800 KEYWORD(singleImpl);
801 KEYWORD(branchFunnel);
802 KEYWORD(singleImplName);
803 KEYWORD(resByArg);
804 KEYWORD(byArg);
805 KEYWORD(uniformRetVal);
806 KEYWORD(uniqueRetVal);
807 KEYWORD(virtualConstProp);
808 KEYWORD(info);
809 KEYWORD(byte);
810 KEYWORD(bit);
811 KEYWORD(varFlags);
812 KEYWORD(callsites);
813 KEYWORD(clones);
814 KEYWORD(stackIds);
815 KEYWORD(allocs);
816 KEYWORD(versions);
817 KEYWORD(memProf);
818 KEYWORD(notcold);
819
820 #undef KEYWORD
821
822 // Keywords for types.
823 #define TYPEKEYWORD(STR, LLVMTY) \
824 do { \
825 if (Keyword == STR) { \
826 TyVal = LLVMTY; \
827 return lltok::Type; \
828 } \
829 } while (false)
830
831 TYPEKEYWORD("void", Type::getVoidTy(Context));
832 TYPEKEYWORD("half", Type::getHalfTy(Context));
833 TYPEKEYWORD("bfloat", Type::getBFloatTy(Context));
834 TYPEKEYWORD("float", Type::getFloatTy(Context));
835 TYPEKEYWORD("double", Type::getDoubleTy(Context));
836 TYPEKEYWORD("x86_fp80", Type::getX86_FP80Ty(Context));
837 TYPEKEYWORD("fp128", Type::getFP128Ty(Context));
838 TYPEKEYWORD("ppc_fp128", Type::getPPC_FP128Ty(Context));
839 TYPEKEYWORD("label", Type::getLabelTy(Context));
840 TYPEKEYWORD("metadata", Type::getMetadataTy(Context));
841 TYPEKEYWORD("x86_mmx", Type::getX86_MMXTy(Context));
842 TYPEKEYWORD("x86_amx", Type::getX86_AMXTy(Context));
843 TYPEKEYWORD("token", Type::getTokenTy(Context));
844 TYPEKEYWORD("ptr", PointerType::getUnqual(Context));
845
846 #undef TYPEKEYWORD
847
848 // Keywords for instructions.
849 #define INSTKEYWORD(STR, Enum) \
850 do { \
851 if (Keyword == #STR) { \
852 UIntVal = Instruction::Enum; \
853 return lltok::kw_##STR; \
854 } \
855 } while (false)
856
857 INSTKEYWORD(fneg, FNeg);
858
859 INSTKEYWORD(add, Add); INSTKEYWORD(fadd, FAdd);
860 INSTKEYWORD(sub, Sub); INSTKEYWORD(fsub, FSub);
861 INSTKEYWORD(mul, Mul); INSTKEYWORD(fmul, FMul);
862 INSTKEYWORD(udiv, UDiv); INSTKEYWORD(sdiv, SDiv); INSTKEYWORD(fdiv, FDiv);
863 INSTKEYWORD(urem, URem); INSTKEYWORD(srem, SRem); INSTKEYWORD(frem, FRem);
864 INSTKEYWORD(shl, Shl); INSTKEYWORD(lshr, LShr); INSTKEYWORD(ashr, AShr);
865 INSTKEYWORD(and, And); INSTKEYWORD(or, Or); INSTKEYWORD(xor, Xor);
866 INSTKEYWORD(icmp, ICmp); INSTKEYWORD(fcmp, FCmp);
867
868 INSTKEYWORD(phi, PHI);
869 INSTKEYWORD(call, Call);
870 INSTKEYWORD(trunc, Trunc);
871 INSTKEYWORD(zext, ZExt);
872 INSTKEYWORD(sext, SExt);
873 INSTKEYWORD(fptrunc, FPTrunc);
874 INSTKEYWORD(fpext, FPExt);
875 INSTKEYWORD(uitofp, UIToFP);
876 INSTKEYWORD(sitofp, SIToFP);
877 INSTKEYWORD(fptoui, FPToUI);
878 INSTKEYWORD(fptosi, FPToSI);
879 INSTKEYWORD(inttoptr, IntToPtr);
880 INSTKEYWORD(ptrtoint, PtrToInt);
881 INSTKEYWORD(bitcast, BitCast);
882 INSTKEYWORD(addrspacecast, AddrSpaceCast);
883 INSTKEYWORD(select, Select);
884 INSTKEYWORD(va_arg, VAArg);
885 INSTKEYWORD(ret, Ret);
886 INSTKEYWORD(br, Br);
887 INSTKEYWORD(switch, Switch);
888 INSTKEYWORD(indirectbr, IndirectBr);
889 INSTKEYWORD(invoke, Invoke);
890 INSTKEYWORD(resume, Resume);
891 INSTKEYWORD(unreachable, Unreachable);
892 INSTKEYWORD(callbr, CallBr);
893
894 INSTKEYWORD(alloca, Alloca);
895 INSTKEYWORD(load, Load);
896 INSTKEYWORD(store, Store);
897 INSTKEYWORD(cmpxchg, AtomicCmpXchg);
898 INSTKEYWORD(atomicrmw, AtomicRMW);
899 INSTKEYWORD(fence, Fence);
900 INSTKEYWORD(getelementptr, GetElementPtr);
901
902 INSTKEYWORD(extractelement, ExtractElement);
903 INSTKEYWORD(insertelement, InsertElement);
904 INSTKEYWORD(shufflevector, ShuffleVector);
905 INSTKEYWORD(extractvalue, ExtractValue);
906 INSTKEYWORD(insertvalue, InsertValue);
907 INSTKEYWORD(landingpad, LandingPad);
908 INSTKEYWORD(cleanupret, CleanupRet);
909 INSTKEYWORD(catchret, CatchRet);
910 INSTKEYWORD(catchswitch, CatchSwitch);
911 INSTKEYWORD(catchpad, CatchPad);
912 INSTKEYWORD(cleanuppad, CleanupPad);
913
914 INSTKEYWORD(freeze, Freeze);
915
916 #undef INSTKEYWORD
917
918 #define DWKEYWORD(TYPE, TOKEN) \
919 do { \
920 if (Keyword.starts_with("DW_" #TYPE "_")) { \
921 StrVal.assign(Keyword.begin(), Keyword.end()); \
922 return lltok::TOKEN; \
923 } \
924 } while (false)
925
926 DWKEYWORD(TAG, DwarfTag);
927 DWKEYWORD(ATE, DwarfAttEncoding);
928 DWKEYWORD(VIRTUALITY, DwarfVirtuality);
929 DWKEYWORD(LANG, DwarfLang);
930 DWKEYWORD(CC, DwarfCC);
931 DWKEYWORD(OP, DwarfOp);
932 DWKEYWORD(MACINFO, DwarfMacinfo);
933
934 #undef DWKEYWORD
935
936 // Keywords for debug record types.
937 #define DBGRECORDTYPEKEYWORD(STR) \
938 do { \
939 if (Keyword == "dbg_" #STR) { \
940 StrVal = #STR; \
941 return lltok::DbgRecordType; \
942 } \
943 } while (false)
944
945 DBGRECORDTYPEKEYWORD(value);
946 DBGRECORDTYPEKEYWORD(declare);
947 DBGRECORDTYPEKEYWORD(assign);
948 DBGRECORDTYPEKEYWORD(label);
949 #undef DBGRECORDTYPEKEYWORD
950
951 if (Keyword.starts_with("DIFlag")) {
952 StrVal.assign(Keyword.begin(), Keyword.end());
953 return lltok::DIFlag;
954 }
955
956 if (Keyword.starts_with("DISPFlag")) {
957 StrVal.assign(Keyword.begin(), Keyword.end());
958 return lltok::DISPFlag;
959 }
960
961 if (Keyword.starts_with("CSK_")) {
962 StrVal.assign(Keyword.begin(), Keyword.end());
963 return lltok::ChecksumKind;
964 }
965
966 if (Keyword == "NoDebug" || Keyword == "FullDebug" ||
967 Keyword == "LineTablesOnly" || Keyword == "DebugDirectivesOnly") {
968 StrVal.assign(Keyword.begin(), Keyword.end());
969 return lltok::EmissionKind;
970 }
971
972 if (Keyword == "GNU" || Keyword == "Apple" || Keyword == "None" ||
973 Keyword == "Default") {
974 StrVal.assign(Keyword.begin(), Keyword.end());
975 return lltok::NameTableKind;
976 }
977
978 // Check for [us]0x[0-9A-Fa-f]+ which are Hexadecimal constant generated by
979 // the CFE to avoid forcing it to deal with 64-bit numbers.
980 if ((TokStart[0] == 'u' || TokStart[0] == 's') &&
981 TokStart[1] == '0' && TokStart[2] == 'x' &&
982 isxdigit(static_cast<unsigned char>(TokStart[3]))) {
983 int len = CurPtr-TokStart-3;
984 uint32_t bits = len * 4;
985 StringRef HexStr(TokStart + 3, len);
986 if (!all_of(HexStr, isxdigit)) {
987 // Bad token, return it as an error.
988 CurPtr = TokStart+3;
989 return lltok::Error;
990 }
991 APInt Tmp(bits, HexStr, 16);
992 uint32_t activeBits = Tmp.getActiveBits();
993 if (activeBits > 0 && activeBits < bits)
994 Tmp = Tmp.trunc(activeBits);
995 APSIntVal = APSInt(Tmp, TokStart[0] == 'u');
996 return lltok::APSInt;
997 }
998
999 // If this is "cc1234", return this as just "cc".
1000 if (TokStart[0] == 'c' && TokStart[1] == 'c') {
1001 CurPtr = TokStart+2;
1002 return lltok::kw_cc;
1003 }
1004
1005 // Finally, if this isn't known, return an error.
1006 CurPtr = TokStart+1;
1007 return lltok::Error;
1008 }
1009
1010 /// Lex all tokens that start with a 0x prefix, knowing they match and are not
1011 /// labels.
1012 /// HexFPConstant 0x[0-9A-Fa-f]+
1013 /// HexFP80Constant 0xK[0-9A-Fa-f]+
1014 /// HexFP128Constant 0xL[0-9A-Fa-f]+
1015 /// HexPPC128Constant 0xM[0-9A-Fa-f]+
1016 /// HexHalfConstant 0xH[0-9A-Fa-f]+
1017 /// HexBFloatConstant 0xR[0-9A-Fa-f]+
Lex0x()1018 lltok::Kind LLLexer::Lex0x() {
1019 CurPtr = TokStart + 2;
1020
1021 char Kind;
1022 if ((CurPtr[0] >= 'K' && CurPtr[0] <= 'M') || CurPtr[0] == 'H' ||
1023 CurPtr[0] == 'R') {
1024 Kind = *CurPtr++;
1025 } else {
1026 Kind = 'J';
1027 }
1028
1029 if (!isxdigit(static_cast<unsigned char>(CurPtr[0]))) {
1030 // Bad token, return it as an error.
1031 CurPtr = TokStart+1;
1032 return lltok::Error;
1033 }
1034
1035 while (isxdigit(static_cast<unsigned char>(CurPtr[0])))
1036 ++CurPtr;
1037
1038 if (Kind == 'J') {
1039 // HexFPConstant - Floating point constant represented in IEEE format as a
1040 // hexadecimal number for when exponential notation is not precise enough.
1041 // Half, BFloat, Float, and double only.
1042 APFloatVal = APFloat(APFloat::IEEEdouble(),
1043 APInt(64, HexIntToVal(TokStart + 2, CurPtr)));
1044 return lltok::APFloat;
1045 }
1046
1047 uint64_t Pair[2];
1048 switch (Kind) {
1049 default: llvm_unreachable("Unknown kind!");
1050 case 'K':
1051 // F80HexFPConstant - x87 long double in hexadecimal format (10 bytes)
1052 FP80HexToIntPair(TokStart+3, CurPtr, Pair);
1053 APFloatVal = APFloat(APFloat::x87DoubleExtended(), APInt(80, Pair));
1054 return lltok::APFloat;
1055 case 'L':
1056 // F128HexFPConstant - IEEE 128-bit in hexadecimal format (16 bytes)
1057 HexToIntPair(TokStart+3, CurPtr, Pair);
1058 APFloatVal = APFloat(APFloat::IEEEquad(), APInt(128, Pair));
1059 return lltok::APFloat;
1060 case 'M':
1061 // PPC128HexFPConstant - PowerPC 128-bit in hexadecimal format (16 bytes)
1062 HexToIntPair(TokStart+3, CurPtr, Pair);
1063 APFloatVal = APFloat(APFloat::PPCDoubleDouble(), APInt(128, Pair));
1064 return lltok::APFloat;
1065 case 'H':
1066 APFloatVal = APFloat(APFloat::IEEEhalf(),
1067 APInt(16,HexIntToVal(TokStart+3, CurPtr)));
1068 return lltok::APFloat;
1069 case 'R':
1070 // Brain floating point
1071 APFloatVal = APFloat(APFloat::BFloat(),
1072 APInt(16, HexIntToVal(TokStart + 3, CurPtr)));
1073 return lltok::APFloat;
1074 }
1075 }
1076
1077 /// Lex tokens for a label or a numeric constant, possibly starting with -.
1078 /// Label [-a-zA-Z$._0-9]+:
1079 /// NInteger -[0-9]+
1080 /// FPConstant [-+]?[0-9]+[.][0-9]*([eE][-+]?[0-9]+)?
1081 /// PInteger [0-9]+
1082 /// HexFPConstant 0x[0-9A-Fa-f]+
1083 /// HexFP80Constant 0xK[0-9A-Fa-f]+
1084 /// HexFP128Constant 0xL[0-9A-Fa-f]+
1085 /// HexPPC128Constant 0xM[0-9A-Fa-f]+
LexDigitOrNegative()1086 lltok::Kind LLLexer::LexDigitOrNegative() {
1087 // If the letter after the negative is not a number, this is probably a label.
1088 if (!isdigit(static_cast<unsigned char>(TokStart[0])) &&
1089 !isdigit(static_cast<unsigned char>(CurPtr[0]))) {
1090 // Okay, this is not a number after the -, it's probably a label.
1091 if (const char *End = isLabelTail(CurPtr)) {
1092 StrVal.assign(TokStart, End-1);
1093 CurPtr = End;
1094 return lltok::LabelStr;
1095 }
1096
1097 return lltok::Error;
1098 }
1099
1100 // At this point, it is either a label, int or fp constant.
1101
1102 // Skip digits, we have at least one.
1103 for (; isdigit(static_cast<unsigned char>(CurPtr[0])); ++CurPtr)
1104 /*empty*/;
1105
1106 // Check if this is a fully-numeric label:
1107 if (isdigit(TokStart[0]) && CurPtr[0] == ':') {
1108 uint64_t Val = atoull(TokStart, CurPtr);
1109 ++CurPtr; // Skip the colon.
1110 if ((unsigned)Val != Val)
1111 Error("invalid value number (too large)!");
1112 UIntVal = unsigned(Val);
1113 return lltok::LabelID;
1114 }
1115
1116 // Check to see if this really is a string label, e.g. "-1:".
1117 if (isLabelChar(CurPtr[0]) || CurPtr[0] == ':') {
1118 if (const char *End = isLabelTail(CurPtr)) {
1119 StrVal.assign(TokStart, End-1);
1120 CurPtr = End;
1121 return lltok::LabelStr;
1122 }
1123 }
1124
1125 // If the next character is a '.', then it is a fp value, otherwise its
1126 // integer.
1127 if (CurPtr[0] != '.') {
1128 if (TokStart[0] == '0' && TokStart[1] == 'x')
1129 return Lex0x();
1130 APSIntVal = APSInt(StringRef(TokStart, CurPtr - TokStart));
1131 return lltok::APSInt;
1132 }
1133
1134 ++CurPtr;
1135
1136 // Skip over [0-9]*([eE][-+]?[0-9]+)?
1137 while (isdigit(static_cast<unsigned char>(CurPtr[0]))) ++CurPtr;
1138
1139 if (CurPtr[0] == 'e' || CurPtr[0] == 'E') {
1140 if (isdigit(static_cast<unsigned char>(CurPtr[1])) ||
1141 ((CurPtr[1] == '-' || CurPtr[1] == '+') &&
1142 isdigit(static_cast<unsigned char>(CurPtr[2])))) {
1143 CurPtr += 2;
1144 while (isdigit(static_cast<unsigned char>(CurPtr[0]))) ++CurPtr;
1145 }
1146 }
1147
1148 APFloatVal = APFloat(APFloat::IEEEdouble(),
1149 StringRef(TokStart, CurPtr - TokStart));
1150 return lltok::APFloat;
1151 }
1152
1153 /// Lex a floating point constant starting with +.
1154 /// FPConstant [-+]?[0-9]+[.][0-9]*([eE][-+]?[0-9]+)?
LexPositive()1155 lltok::Kind LLLexer::LexPositive() {
1156 // If the letter after the negative is a number, this is probably not a
1157 // label.
1158 if (!isdigit(static_cast<unsigned char>(CurPtr[0])))
1159 return lltok::Error;
1160
1161 // Skip digits.
1162 for (++CurPtr; isdigit(static_cast<unsigned char>(CurPtr[0])); ++CurPtr)
1163 /*empty*/;
1164
1165 // At this point, we need a '.'.
1166 if (CurPtr[0] != '.') {
1167 CurPtr = TokStart+1;
1168 return lltok::Error;
1169 }
1170
1171 ++CurPtr;
1172
1173 // Skip over [0-9]*([eE][-+]?[0-9]+)?
1174 while (isdigit(static_cast<unsigned char>(CurPtr[0]))) ++CurPtr;
1175
1176 if (CurPtr[0] == 'e' || CurPtr[0] == 'E') {
1177 if (isdigit(static_cast<unsigned char>(CurPtr[1])) ||
1178 ((CurPtr[1] == '-' || CurPtr[1] == '+') &&
1179 isdigit(static_cast<unsigned char>(CurPtr[2])))) {
1180 CurPtr += 2;
1181 while (isdigit(static_cast<unsigned char>(CurPtr[0]))) ++CurPtr;
1182 }
1183 }
1184
1185 APFloatVal = APFloat(APFloat::IEEEdouble(),
1186 StringRef(TokStart, CurPtr - TokStart));
1187 return lltok::APFloat;
1188 }
1189