| //===- LLLexer.cpp - Lexer for .ll Files ----------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Implement the Lexer for .ll files. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "LLLexer.h" |
| #include "llvm/ADT/APInt.h" |
| #include "llvm/ADT/STLExtras.h" |
| #include "llvm/ADT/StringExtras.h" |
| #include "llvm/ADT/Twine.h" |
| #include "llvm/IR/DerivedTypes.h" |
| #include "llvm/IR/Instruction.h" |
| #include "llvm/Support/ErrorHandling.h" |
| #include "llvm/Support/SourceMgr.h" |
| #include <cassert> |
| #include <cctype> |
| #include <cstdio> |
| |
| using namespace llvm; |
| |
| bool LLLexer::Error(LocTy ErrorLoc, const Twine &Msg) const { |
| ErrorInfo = SM.GetMessage(ErrorLoc, SourceMgr::DK_Error, Msg); |
| return true; |
| } |
| |
| void LLLexer::Warning(LocTy WarningLoc, const Twine &Msg) const { |
| SM.PrintMessage(WarningLoc, SourceMgr::DK_Warning, Msg); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Helper functions. |
| //===----------------------------------------------------------------------===// |
| |
| // atoull - Convert an ascii string of decimal digits into the unsigned long |
| // long representation... this does not have to do input error checking, |
| // because we know that the input will be matched by a suitable regex... |
| // |
| uint64_t LLLexer::atoull(const char *Buffer, const char *End) { |
| uint64_t Result = 0; |
| for (; Buffer != End; Buffer++) { |
| uint64_t OldRes = Result; |
| Result *= 10; |
| Result += *Buffer-'0'; |
| if (Result < OldRes) { // Uh, oh, overflow detected!!! |
| Error("constant bigger than 64 bits detected!"); |
| return 0; |
| } |
| } |
| return Result; |
| } |
| |
| uint64_t LLLexer::HexIntToVal(const char *Buffer, const char *End) { |
| uint64_t Result = 0; |
| for (; Buffer != End; ++Buffer) { |
| uint64_t OldRes = Result; |
| Result *= 16; |
| Result += hexDigitValue(*Buffer); |
| |
| if (Result < OldRes) { // Uh, oh, overflow detected!!! |
| Error("constant bigger than 64 bits detected!"); |
| return 0; |
| } |
| } |
| return Result; |
| } |
| |
| void LLLexer::HexToIntPair(const char *Buffer, const char *End, |
| uint64_t Pair[2]) { |
| Pair[0] = 0; |
| if (End - Buffer >= 16) { |
| for (int i = 0; i < 16; i++, Buffer++) { |
| assert(Buffer != End); |
| Pair[0] *= 16; |
| Pair[0] += hexDigitValue(*Buffer); |
| } |
| } |
| Pair[1] = 0; |
| for (int i = 0; i < 16 && Buffer != End; i++, Buffer++) { |
| Pair[1] *= 16; |
| Pair[1] += hexDigitValue(*Buffer); |
| } |
| if (Buffer != End) |
| Error("constant bigger than 128 bits detected!"); |
| } |
| |
| /// FP80HexToIntPair - translate an 80 bit FP80 number (20 hexits) into |
| /// { low64, high16 } as usual for an APInt. |
| void LLLexer::FP80HexToIntPair(const char *Buffer, const char *End, |
| uint64_t Pair[2]) { |
| Pair[1] = 0; |
| for (int i=0; i<4 && Buffer != End; i++, Buffer++) { |
| assert(Buffer != End); |
| Pair[1] *= 16; |
| Pair[1] += hexDigitValue(*Buffer); |
| } |
| Pair[0] = 0; |
| for (int i = 0; i < 16 && Buffer != End; i++, Buffer++) { |
| Pair[0] *= 16; |
| Pair[0] += hexDigitValue(*Buffer); |
| } |
| if (Buffer != End) |
| Error("constant bigger than 128 bits detected!"); |
| } |
| |
| // UnEscapeLexed - Run through the specified buffer and change \xx codes to the |
| // appropriate character. |
| static void UnEscapeLexed(std::string &Str) { |
| if (Str.empty()) return; |
| |
| char *Buffer = &Str[0], *EndBuffer = Buffer+Str.size(); |
| char *BOut = Buffer; |
| for (char *BIn = Buffer; BIn != EndBuffer; ) { |
| if (BIn[0] == '\\') { |
| if (BIn < EndBuffer-1 && BIn[1] == '\\') { |
| *BOut++ = '\\'; // Two \ becomes one |
| BIn += 2; |
| } else if (BIn < EndBuffer-2 && |
| isxdigit(static_cast<unsigned char>(BIn[1])) && |
| isxdigit(static_cast<unsigned char>(BIn[2]))) { |
| *BOut = hexDigitValue(BIn[1]) * 16 + hexDigitValue(BIn[2]); |
| BIn += 3; // Skip over handled chars |
| ++BOut; |
| } else { |
| *BOut++ = *BIn++; |
| } |
| } else { |
| *BOut++ = *BIn++; |
| } |
| } |
| Str.resize(BOut-Buffer); |
| } |
| |
| /// isLabelChar - Return true for [-a-zA-Z$._0-9]. |
| static bool isLabelChar(char C) { |
| return isalnum(static_cast<unsigned char>(C)) || C == '-' || C == '$' || |
| C == '.' || C == '_'; |
| } |
| |
| /// isLabelTail - Return true if this pointer points to a valid end of a label. |
| static const char *isLabelTail(const char *CurPtr) { |
| while (true) { |
| if (CurPtr[0] == ':') return CurPtr+1; |
| if (!isLabelChar(CurPtr[0])) return nullptr; |
| ++CurPtr; |
| } |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Lexer definition. |
| //===----------------------------------------------------------------------===// |
| |
| LLLexer::LLLexer(StringRef StartBuf, SourceMgr &SM, SMDiagnostic &Err, |
| LLVMContext &C) |
| : CurBuf(StartBuf), ErrorInfo(Err), SM(SM), Context(C), APFloatVal(0.0), |
| IgnoreColonInIdentifiers(false) { |
| CurPtr = CurBuf.begin(); |
| } |
| |
| int LLLexer::getNextChar() { |
| char CurChar = *CurPtr++; |
| switch (CurChar) { |
| default: return (unsigned char)CurChar; |
| case 0: |
| // A nul character in the stream is either the end of the current buffer or |
| // a random nul in the file. Disambiguate that here. |
| if (CurPtr-1 != CurBuf.end()) |
| return 0; // Just whitespace. |
| |
| // Otherwise, return end of file. |
| --CurPtr; // Another call to lex will return EOF again. |
| return EOF; |
| } |
| } |
| |
| lltok::Kind LLLexer::LexToken() { |
| while (true) { |
| TokStart = CurPtr; |
| |
| int CurChar = getNextChar(); |
| switch (CurChar) { |
| default: |
| // Handle letters: [a-zA-Z_] |
| if (isalpha(static_cast<unsigned char>(CurChar)) || CurChar == '_') |
| return LexIdentifier(); |
| |
| return lltok::Error; |
| case EOF: return lltok::Eof; |
| case 0: |
| case ' ': |
| case '\t': |
| case '\n': |
| case '\r': |
| // Ignore whitespace. |
| continue; |
| case '+': return LexPositive(); |
| case '@': return LexAt(); |
| case '$': return LexDollar(); |
| case '%': return LexPercent(); |
| case '"': return LexQuote(); |
| case '.': |
| if (const char *Ptr = isLabelTail(CurPtr)) { |
| CurPtr = Ptr; |
| StrVal.assign(TokStart, CurPtr-1); |
| return lltok::LabelStr; |
| } |
| if (CurPtr[0] == '.' && CurPtr[1] == '.') { |
| CurPtr += 2; |
| return lltok::dotdotdot; |
| } |
| return lltok::Error; |
| case ';': |
| SkipLineComment(); |
| continue; |
| case '!': return LexExclaim(); |
| case '^': |
| return LexCaret(); |
| case ':': |
| return lltok::colon; |
| case '#': return LexHash(); |
| case '0': case '1': case '2': case '3': case '4': |
| case '5': case '6': case '7': case '8': case '9': |
| case '-': |
| return LexDigitOrNegative(); |
| case '=': return lltok::equal; |
| case '[': return lltok::lsquare; |
| case ']': return lltok::rsquare; |
| case '{': return lltok::lbrace; |
| case '}': return lltok::rbrace; |
| case '<': return lltok::less; |
| case '>': return lltok::greater; |
| case '(': return lltok::lparen; |
| case ')': return lltok::rparen; |
| case ',': return lltok::comma; |
| case '*': return lltok::star; |
| case '|': return lltok::bar; |
| } |
| } |
| } |
| |
| void LLLexer::SkipLineComment() { |
| while (true) { |
| if (CurPtr[0] == '\n' || CurPtr[0] == '\r' || getNextChar() == EOF) |
| return; |
| } |
| } |
| |
| /// Lex all tokens that start with an @ character. |
| /// GlobalVar @\"[^\"]*\" |
| /// GlobalVar @[-a-zA-Z$._][-a-zA-Z$._0-9]* |
| /// GlobalVarID @[0-9]+ |
| lltok::Kind LLLexer::LexAt() { |
| return LexVar(lltok::GlobalVar, lltok::GlobalID); |
| } |
| |
| lltok::Kind LLLexer::LexDollar() { |
| if (const char *Ptr = isLabelTail(TokStart)) { |
| CurPtr = Ptr; |
| StrVal.assign(TokStart, CurPtr - 1); |
| return lltok::LabelStr; |
| } |
| |
| // Handle DollarStringConstant: $\"[^\"]*\" |
| if (CurPtr[0] == '"') { |
| ++CurPtr; |
| |
| while (true) { |
| int CurChar = getNextChar(); |
| |
| if (CurChar == EOF) { |
| Error("end of file in COMDAT variable name"); |
| return lltok::Error; |
| } |
| if (CurChar == '"') { |
| StrVal.assign(TokStart + 2, CurPtr - 1); |
| UnEscapeLexed(StrVal); |
| if (StringRef(StrVal).find_first_of(0) != StringRef::npos) { |
| Error("Null bytes are not allowed in names"); |
| return lltok::Error; |
| } |
| return lltok::ComdatVar; |
| } |
| } |
| } |
| |
| // Handle ComdatVarName: $[-a-zA-Z$._][-a-zA-Z$._0-9]* |
| if (ReadVarName()) |
| return lltok::ComdatVar; |
| |
| return lltok::Error; |
| } |
| |
| /// ReadString - Read a string until the closing quote. |
| lltok::Kind LLLexer::ReadString(lltok::Kind kind) { |
| const char *Start = CurPtr; |
| while (true) { |
| int CurChar = getNextChar(); |
| |
| if (CurChar == EOF) { |
| Error("end of file in string constant"); |
| return lltok::Error; |
| } |
| if (CurChar == '"') { |
| StrVal.assign(Start, CurPtr-1); |
| UnEscapeLexed(StrVal); |
| return kind; |
| } |
| } |
| } |
| |
| /// ReadVarName - Read the rest of a token containing a variable name. |
| bool LLLexer::ReadVarName() { |
| const char *NameStart = CurPtr; |
| if (isalpha(static_cast<unsigned char>(CurPtr[0])) || |
| CurPtr[0] == '-' || CurPtr[0] == '$' || |
| CurPtr[0] == '.' || CurPtr[0] == '_') { |
| ++CurPtr; |
| while (isalnum(static_cast<unsigned char>(CurPtr[0])) || |
| CurPtr[0] == '-' || CurPtr[0] == '$' || |
| CurPtr[0] == '.' || CurPtr[0] == '_') |
| ++CurPtr; |
| |
| StrVal.assign(NameStart, CurPtr); |
| return true; |
| } |
| return false; |
| } |
| |
| // Lex an ID: [0-9]+. On success, the ID is stored in UIntVal and Token is |
| // returned, otherwise the Error token is returned. |
| lltok::Kind LLLexer::LexUIntID(lltok::Kind Token) { |
| if (!isdigit(static_cast<unsigned char>(CurPtr[0]))) |
| return lltok::Error; |
| |
| for (++CurPtr; isdigit(static_cast<unsigned char>(CurPtr[0])); ++CurPtr) |
| /*empty*/; |
| |
| uint64_t Val = atoull(TokStart + 1, CurPtr); |
| if ((unsigned)Val != Val) |
| Error("invalid value number (too large)!"); |
| UIntVal = unsigned(Val); |
| return Token; |
| } |
| |
| lltok::Kind LLLexer::LexVar(lltok::Kind Var, lltok::Kind VarID) { |
| // Handle StringConstant: \"[^\"]*\" |
| if (CurPtr[0] == '"') { |
| ++CurPtr; |
| |
| while (true) { |
| int CurChar = getNextChar(); |
| |
| if (CurChar == EOF) { |
| Error("end of file in global variable name"); |
| return lltok::Error; |
| } |
| if (CurChar == '"') { |
| StrVal.assign(TokStart+2, CurPtr-1); |
| UnEscapeLexed(StrVal); |
| if (StringRef(StrVal).find_first_of(0) != StringRef::npos) { |
| Error("Null bytes are not allowed in names"); |
| return lltok::Error; |
| } |
| return Var; |
| } |
| } |
| } |
| |
| // Handle VarName: [-a-zA-Z$._][-a-zA-Z$._0-9]* |
| if (ReadVarName()) |
| return Var; |
| |
| // Handle VarID: [0-9]+ |
| return LexUIntID(VarID); |
| } |
| |
| /// Lex all tokens that start with a % character. |
| /// LocalVar ::= %\"[^\"]*\" |
| /// LocalVar ::= %[-a-zA-Z$._][-a-zA-Z$._0-9]* |
| /// LocalVarID ::= %[0-9]+ |
| lltok::Kind LLLexer::LexPercent() { |
| return LexVar(lltok::LocalVar, lltok::LocalVarID); |
| } |
| |
| /// Lex all tokens that start with a " character. |
| /// QuoteLabel "[^"]+": |
| /// StringConstant "[^"]*" |
| lltok::Kind LLLexer::LexQuote() { |
| lltok::Kind kind = ReadString(lltok::StringConstant); |
| if (kind == lltok::Error || kind == lltok::Eof) |
| return kind; |
| |
| if (CurPtr[0] == ':') { |
| ++CurPtr; |
| if (StringRef(StrVal).find_first_of(0) != StringRef::npos) { |
| Error("Null bytes are not allowed in names"); |
| kind = lltok::Error; |
| } else { |
| kind = lltok::LabelStr; |
| } |
| } |
| |
| return kind; |
| } |
| |
| /// Lex all tokens that start with a ! character. |
| /// !foo |
| /// ! |
| lltok::Kind LLLexer::LexExclaim() { |
| // Lex a metadata name as a MetadataVar. |
| if (isalpha(static_cast<unsigned char>(CurPtr[0])) || |
| CurPtr[0] == '-' || CurPtr[0] == '$' || |
| CurPtr[0] == '.' || CurPtr[0] == '_' || CurPtr[0] == '\\') { |
| ++CurPtr; |
| while (isalnum(static_cast<unsigned char>(CurPtr[0])) || |
| CurPtr[0] == '-' || CurPtr[0] == '$' || |
| CurPtr[0] == '.' || CurPtr[0] == '_' || CurPtr[0] == '\\') |
| ++CurPtr; |
| |
| StrVal.assign(TokStart+1, CurPtr); // Skip ! |
| UnEscapeLexed(StrVal); |
| return lltok::MetadataVar; |
| } |
| return lltok::exclaim; |
| } |
| |
| /// Lex all tokens that start with a ^ character. |
| /// SummaryID ::= ^[0-9]+ |
| lltok::Kind LLLexer::LexCaret() { |
| // Handle SummaryID: ^[0-9]+ |
| return LexUIntID(lltok::SummaryID); |
| } |
| |
| /// Lex all tokens that start with a # character. |
| /// AttrGrpID ::= #[0-9]+ |
| lltok::Kind LLLexer::LexHash() { |
| // Handle AttrGrpID: #[0-9]+ |
| return LexUIntID(lltok::AttrGrpID); |
| } |
| |
| /// Lex a label, integer type, keyword, or hexadecimal integer constant. |
| /// Label [-a-zA-Z$._0-9]+: |
| /// IntegerType i[0-9]+ |
| /// Keyword sdiv, float, ... |
| /// HexIntConstant [us]0x[0-9A-Fa-f]+ |
| lltok::Kind LLLexer::LexIdentifier() { |
| const char *StartChar = CurPtr; |
| const char *IntEnd = CurPtr[-1] == 'i' ? nullptr : StartChar; |
| const char *KeywordEnd = nullptr; |
| |
| for (; isLabelChar(*CurPtr); ++CurPtr) { |
| // If we decide this is an integer, remember the end of the sequence. |
| if (!IntEnd && !isdigit(static_cast<unsigned char>(*CurPtr))) |
| IntEnd = CurPtr; |
| if (!KeywordEnd && !isalnum(static_cast<unsigned char>(*CurPtr)) && |
| *CurPtr != '_') |
| KeywordEnd = CurPtr; |
| } |
| |
| // If we stopped due to a colon, unless we were directed to ignore it, |
| // this really is a label. |
| if (!IgnoreColonInIdentifiers && *CurPtr == ':') { |
| StrVal.assign(StartChar-1, CurPtr++); |
| return lltok::LabelStr; |
| } |
| |
| // Otherwise, this wasn't a label. If this was valid as an integer type, |
| // return it. |
| if (!IntEnd) IntEnd = CurPtr; |
| if (IntEnd != StartChar) { |
| CurPtr = IntEnd; |
| uint64_t NumBits = atoull(StartChar, CurPtr); |
| if (NumBits < IntegerType::MIN_INT_BITS || |
| NumBits > IntegerType::MAX_INT_BITS) { |
| Error("bitwidth for integer type out of range!"); |
| return lltok::Error; |
| } |
| TyVal = IntegerType::get(Context, NumBits); |
| return lltok::Type; |
| } |
| |
| // Otherwise, this was a letter sequence. See which keyword this is. |
| if (!KeywordEnd) KeywordEnd = CurPtr; |
| CurPtr = KeywordEnd; |
| --StartChar; |
| StringRef Keyword(StartChar, CurPtr - StartChar); |
| |
| #define KEYWORD(STR) \ |
| do { \ |
| if (Keyword == #STR) \ |
| return lltok::kw_##STR; \ |
| } while (false) |
| |
| KEYWORD(true); KEYWORD(false); |
| KEYWORD(declare); KEYWORD(define); |
| KEYWORD(global); KEYWORD(constant); |
| |
| KEYWORD(dso_local); |
| KEYWORD(dso_preemptable); |
| |
| KEYWORD(private); |
| KEYWORD(internal); |
| KEYWORD(available_externally); |
| KEYWORD(linkonce); |
| KEYWORD(linkonce_odr); |
| KEYWORD(weak); // Use as a linkage, and a modifier for "cmpxchg". |
| KEYWORD(weak_odr); |
| KEYWORD(appending); |
| KEYWORD(dllimport); |
| KEYWORD(dllexport); |
| KEYWORD(common); |
| KEYWORD(default); |
| KEYWORD(hidden); |
| KEYWORD(protected); |
| KEYWORD(unnamed_addr); |
| KEYWORD(local_unnamed_addr); |
| KEYWORD(externally_initialized); |
| KEYWORD(extern_weak); |
| KEYWORD(external); |
| KEYWORD(thread_local); |
| KEYWORD(localdynamic); |
| KEYWORD(initialexec); |
| KEYWORD(localexec); |
| KEYWORD(zeroinitializer); |
| KEYWORD(undef); |
| KEYWORD(null); |
| KEYWORD(none); |
| KEYWORD(to); |
| KEYWORD(caller); |
| KEYWORD(within); |
| KEYWORD(from); |
| KEYWORD(tail); |
| KEYWORD(musttail); |
| KEYWORD(notail); |
| KEYWORD(target); |
| KEYWORD(triple); |
| KEYWORD(source_filename); |
| KEYWORD(unwind); |
| KEYWORD(deplibs); // FIXME: Remove in 4.0. |
| KEYWORD(datalayout); |
| KEYWORD(volatile); |
| KEYWORD(atomic); |
| KEYWORD(unordered); |
| KEYWORD(monotonic); |
| KEYWORD(acquire); |
| KEYWORD(release); |
| KEYWORD(acq_rel); |
| KEYWORD(seq_cst); |
| KEYWORD(syncscope); |
| |
| KEYWORD(nnan); |
| KEYWORD(ninf); |
| KEYWORD(nsz); |
| KEYWORD(arcp); |
| KEYWORD(contract); |
| KEYWORD(reassoc); |
| KEYWORD(afn); |
| KEYWORD(fast); |
| KEYWORD(nuw); |
| KEYWORD(nsw); |
| KEYWORD(exact); |
| KEYWORD(inbounds); |
| KEYWORD(inrange); |
| KEYWORD(align); |
| KEYWORD(addrspace); |
| KEYWORD(section); |
| KEYWORD(partition); |
| KEYWORD(alias); |
| KEYWORD(ifunc); |
| KEYWORD(module); |
| KEYWORD(asm); |
| KEYWORD(sideeffect); |
| KEYWORD(alignstack); |
| KEYWORD(inteldialect); |
| KEYWORD(gc); |
| KEYWORD(prefix); |
| KEYWORD(prologue); |
| |
| KEYWORD(ccc); |
| KEYWORD(fastcc); |
| KEYWORD(coldcc); |
| KEYWORD(x86_stdcallcc); |
| KEYWORD(x86_fastcallcc); |
| KEYWORD(x86_thiscallcc); |
| KEYWORD(x86_vectorcallcc); |
| KEYWORD(arm_apcscc); |
| KEYWORD(arm_aapcscc); |
| KEYWORD(arm_aapcs_vfpcc); |
| KEYWORD(aarch64_vector_pcs); |
| KEYWORD(msp430_intrcc); |
| KEYWORD(avr_intrcc); |
| KEYWORD(avr_signalcc); |
| KEYWORD(ptx_kernel); |
| KEYWORD(ptx_device); |
| KEYWORD(spir_kernel); |
| KEYWORD(spir_func); |
| KEYWORD(intel_ocl_bicc); |
| KEYWORD(x86_64_sysvcc); |
| KEYWORD(win64cc); |
| KEYWORD(x86_regcallcc); |
| KEYWORD(webkit_jscc); |
| KEYWORD(swiftcc); |
| KEYWORD(anyregcc); |
| KEYWORD(preserve_mostcc); |
| KEYWORD(preserve_allcc); |
| KEYWORD(ghccc); |
| KEYWORD(x86_intrcc); |
| KEYWORD(hhvmcc); |
| KEYWORD(hhvm_ccc); |
| KEYWORD(cxx_fast_tlscc); |
| KEYWORD(amdgpu_vs); |
| KEYWORD(amdgpu_ls); |
| KEYWORD(amdgpu_hs); |
| KEYWORD(amdgpu_es); |
| KEYWORD(amdgpu_gs); |
| KEYWORD(amdgpu_ps); |
| KEYWORD(amdgpu_cs); |
| KEYWORD(amdgpu_kernel); |
| |
| KEYWORD(cc); |
| KEYWORD(c); |
| |
| KEYWORD(attributes); |
| |
| KEYWORD(alwaysinline); |
| KEYWORD(allocsize); |
| KEYWORD(argmemonly); |
| KEYWORD(builtin); |
| KEYWORD(byval); |
| KEYWORD(inalloca); |
| KEYWORD(cold); |
| KEYWORD(convergent); |
| KEYWORD(dereferenceable); |
| KEYWORD(dereferenceable_or_null); |
| KEYWORD(inaccessiblememonly); |
| KEYWORD(inaccessiblemem_or_argmemonly); |
| KEYWORD(inlinehint); |
| KEYWORD(inreg); |
| KEYWORD(jumptable); |
| KEYWORD(minsize); |
| KEYWORD(naked); |
| KEYWORD(nest); |
| KEYWORD(noalias); |
| KEYWORD(nobuiltin); |
| KEYWORD(nocapture); |
| KEYWORD(noduplicate); |
| KEYWORD(noimplicitfloat); |
| KEYWORD(noinline); |
| KEYWORD(norecurse); |
| KEYWORD(nonlazybind); |
| KEYWORD(nonnull); |
| KEYWORD(noredzone); |
| KEYWORD(noreturn); |
| KEYWORD(nocf_check); |
| KEYWORD(nounwind); |
| KEYWORD(optforfuzzing); |
| KEYWORD(optnone); |
| KEYWORD(optsize); |
| KEYWORD(readnone); |
| KEYWORD(readonly); |
| KEYWORD(returned); |
| KEYWORD(returns_twice); |
| KEYWORD(signext); |
| KEYWORD(speculatable); |
| KEYWORD(sret); |
| KEYWORD(ssp); |
| KEYWORD(sspreq); |
| KEYWORD(sspstrong); |
| KEYWORD(strictfp); |
| KEYWORD(safestack); |
| KEYWORD(shadowcallstack); |
| KEYWORD(sanitize_address); |
| KEYWORD(sanitize_hwaddress); |
| KEYWORD(sanitize_thread); |
| KEYWORD(sanitize_memory); |
| KEYWORD(speculative_load_hardening); |
| KEYWORD(swifterror); |
| KEYWORD(swiftself); |
| KEYWORD(uwtable); |
| KEYWORD(willreturn); |
| KEYWORD(writeonly); |
| KEYWORD(zeroext); |
| KEYWORD(immarg); |
| |
| KEYWORD(type); |
| KEYWORD(opaque); |
| |
| KEYWORD(comdat); |
| |
| // Comdat types |
| KEYWORD(any); |
| KEYWORD(exactmatch); |
| KEYWORD(largest); |
| KEYWORD(noduplicates); |
| KEYWORD(samesize); |
| |
| KEYWORD(eq); KEYWORD(ne); KEYWORD(slt); KEYWORD(sgt); KEYWORD(sle); |
| KEYWORD(sge); KEYWORD(ult); KEYWORD(ugt); KEYWORD(ule); KEYWORD(uge); |
| KEYWORD(oeq); KEYWORD(one); KEYWORD(olt); KEYWORD(ogt); KEYWORD(ole); |
| KEYWORD(oge); KEYWORD(ord); KEYWORD(uno); KEYWORD(ueq); KEYWORD(une); |
| |
| KEYWORD(xchg); KEYWORD(nand); KEYWORD(max); KEYWORD(min); KEYWORD(umax); |
| KEYWORD(umin); |
| |
| KEYWORD(x); |
| KEYWORD(blockaddress); |
| |
| // Metadata types. |
| KEYWORD(distinct); |
| |
| // Use-list order directives. |
| KEYWORD(uselistorder); |
| KEYWORD(uselistorder_bb); |
| |
| KEYWORD(personality); |
| KEYWORD(cleanup); |
| KEYWORD(catch); |
| KEYWORD(filter); |
| |
| // Summary index keywords. |
| KEYWORD(path); |
| KEYWORD(hash); |
| KEYWORD(gv); |
| KEYWORD(guid); |
| KEYWORD(name); |
| KEYWORD(summaries); |
| KEYWORD(flags); |
| KEYWORD(linkage); |
| KEYWORD(notEligibleToImport); |
| KEYWORD(live); |
| KEYWORD(dsoLocal); |
| KEYWORD(canAutoHide); |
| KEYWORD(function); |
| KEYWORD(insts); |
| KEYWORD(funcFlags); |
| KEYWORD(readNone); |
| KEYWORD(readOnly); |
| KEYWORD(noRecurse); |
| KEYWORD(returnDoesNotAlias); |
| KEYWORD(noInline); |
| KEYWORD(calls); |
| KEYWORD(callee); |
| KEYWORD(hotness); |
| KEYWORD(unknown); |
| KEYWORD(hot); |
| KEYWORD(critical); |
| KEYWORD(relbf); |
| KEYWORD(variable); |
| KEYWORD(aliasee); |
| KEYWORD(refs); |
| KEYWORD(typeIdInfo); |
| KEYWORD(typeTests); |
| KEYWORD(typeTestAssumeVCalls); |
| KEYWORD(typeCheckedLoadVCalls); |
| KEYWORD(typeTestAssumeConstVCalls); |
| KEYWORD(typeCheckedLoadConstVCalls); |
| KEYWORD(vFuncId); |
| KEYWORD(offset); |
| KEYWORD(args); |
| KEYWORD(typeid); |
| KEYWORD(summary); |
| KEYWORD(typeTestRes); |
| KEYWORD(kind); |
| KEYWORD(unsat); |
| KEYWORD(byteArray); |
| KEYWORD(inline); |
| KEYWORD(single); |
| KEYWORD(allOnes); |
| KEYWORD(sizeM1BitWidth); |
| KEYWORD(alignLog2); |
| KEYWORD(sizeM1); |
| KEYWORD(bitMask); |
| KEYWORD(inlineBits); |
| KEYWORD(wpdResolutions); |
| KEYWORD(wpdRes); |
| KEYWORD(indir); |
| KEYWORD(singleImpl); |
| KEYWORD(branchFunnel); |
| KEYWORD(singleImplName); |
| KEYWORD(resByArg); |
| KEYWORD(byArg); |
| KEYWORD(uniformRetVal); |
| KEYWORD(uniqueRetVal); |
| KEYWORD(virtualConstProp); |
| KEYWORD(info); |
| KEYWORD(byte); |
| KEYWORD(bit); |
| KEYWORD(varFlags); |
| |
| #undef KEYWORD |
| |
| // Keywords for types. |
| #define TYPEKEYWORD(STR, LLVMTY) \ |
| do { \ |
| if (Keyword == STR) { \ |
| TyVal = LLVMTY; \ |
| return lltok::Type; \ |
| } \ |
| } while (false) |
| |
| TYPEKEYWORD("void", Type::getVoidTy(Context)); |
| TYPEKEYWORD("half", Type::getHalfTy(Context)); |
| TYPEKEYWORD("float", Type::getFloatTy(Context)); |
| TYPEKEYWORD("double", Type::getDoubleTy(Context)); |
| TYPEKEYWORD("x86_fp80", Type::getX86_FP80Ty(Context)); |
| TYPEKEYWORD("fp128", Type::getFP128Ty(Context)); |
| TYPEKEYWORD("ppc_fp128", Type::getPPC_FP128Ty(Context)); |
| TYPEKEYWORD("label", Type::getLabelTy(Context)); |
| TYPEKEYWORD("metadata", Type::getMetadataTy(Context)); |
| TYPEKEYWORD("x86_mmx", Type::getX86_MMXTy(Context)); |
| TYPEKEYWORD("token", Type::getTokenTy(Context)); |
| |
| #undef TYPEKEYWORD |
| |
| // Keywords for instructions. |
| #define INSTKEYWORD(STR, Enum) \ |
| do { \ |
| if (Keyword == #STR) { \ |
| UIntVal = Instruction::Enum; \ |
| return lltok::kw_##STR; \ |
| } \ |
| } while (false) |
| |
| INSTKEYWORD(fneg, FNeg); |
| |
| INSTKEYWORD(add, Add); INSTKEYWORD(fadd, FAdd); |
| INSTKEYWORD(sub, Sub); INSTKEYWORD(fsub, FSub); |
| INSTKEYWORD(mul, Mul); INSTKEYWORD(fmul, FMul); |
| INSTKEYWORD(udiv, UDiv); INSTKEYWORD(sdiv, SDiv); INSTKEYWORD(fdiv, FDiv); |
| INSTKEYWORD(urem, URem); INSTKEYWORD(srem, SRem); INSTKEYWORD(frem, FRem); |
| INSTKEYWORD(shl, Shl); INSTKEYWORD(lshr, LShr); INSTKEYWORD(ashr, AShr); |
| INSTKEYWORD(and, And); INSTKEYWORD(or, Or); INSTKEYWORD(xor, Xor); |
| INSTKEYWORD(icmp, ICmp); INSTKEYWORD(fcmp, FCmp); |
| |
| INSTKEYWORD(phi, PHI); |
| INSTKEYWORD(call, Call); |
| INSTKEYWORD(trunc, Trunc); |
| INSTKEYWORD(zext, ZExt); |
| INSTKEYWORD(sext, SExt); |
| INSTKEYWORD(fptrunc, FPTrunc); |
| INSTKEYWORD(fpext, FPExt); |
| INSTKEYWORD(uitofp, UIToFP); |
| INSTKEYWORD(sitofp, SIToFP); |
| INSTKEYWORD(fptoui, FPToUI); |
| INSTKEYWORD(fptosi, FPToSI); |
| INSTKEYWORD(inttoptr, IntToPtr); |
| INSTKEYWORD(ptrtoint, PtrToInt); |
| INSTKEYWORD(bitcast, BitCast); |
| INSTKEYWORD(addrspacecast, AddrSpaceCast); |
| INSTKEYWORD(select, Select); |
| INSTKEYWORD(va_arg, VAArg); |
| INSTKEYWORD(ret, Ret); |
| INSTKEYWORD(br, Br); |
| INSTKEYWORD(switch, Switch); |
| INSTKEYWORD(indirectbr, IndirectBr); |
| INSTKEYWORD(invoke, Invoke); |
| INSTKEYWORD(resume, Resume); |
| INSTKEYWORD(unreachable, Unreachable); |
| INSTKEYWORD(callbr, CallBr); |
| |
| INSTKEYWORD(alloca, Alloca); |
| INSTKEYWORD(load, Load); |
| INSTKEYWORD(store, Store); |
| INSTKEYWORD(cmpxchg, AtomicCmpXchg); |
| INSTKEYWORD(atomicrmw, AtomicRMW); |
| INSTKEYWORD(fence, Fence); |
| INSTKEYWORD(getelementptr, GetElementPtr); |
| |
| INSTKEYWORD(extractelement, ExtractElement); |
| INSTKEYWORD(insertelement, InsertElement); |
| INSTKEYWORD(shufflevector, ShuffleVector); |
| INSTKEYWORD(extractvalue, ExtractValue); |
| INSTKEYWORD(insertvalue, InsertValue); |
| INSTKEYWORD(landingpad, LandingPad); |
| INSTKEYWORD(cleanupret, CleanupRet); |
| INSTKEYWORD(catchret, CatchRet); |
| INSTKEYWORD(catchswitch, CatchSwitch); |
| INSTKEYWORD(catchpad, CatchPad); |
| INSTKEYWORD(cleanuppad, CleanupPad); |
| |
| #undef INSTKEYWORD |
| |
| #define DWKEYWORD(TYPE, TOKEN) \ |
| do { \ |
| if (Keyword.startswith("DW_" #TYPE "_")) { \ |
| StrVal.assign(Keyword.begin(), Keyword.end()); \ |
| return lltok::TOKEN; \ |
| } \ |
| } while (false) |
| |
| DWKEYWORD(TAG, DwarfTag); |
| DWKEYWORD(ATE, DwarfAttEncoding); |
| DWKEYWORD(VIRTUALITY, DwarfVirtuality); |
| DWKEYWORD(LANG, DwarfLang); |
| DWKEYWORD(CC, DwarfCC); |
| DWKEYWORD(OP, DwarfOp); |
| DWKEYWORD(MACINFO, DwarfMacinfo); |
| |
| #undef DWKEYWORD |
| |
| if (Keyword.startswith("DIFlag")) { |
| StrVal.assign(Keyword.begin(), Keyword.end()); |
| return lltok::DIFlag; |
| } |
| |
| if (Keyword.startswith("DISPFlag")) { |
| StrVal.assign(Keyword.begin(), Keyword.end()); |
| return lltok::DISPFlag; |
| } |
| |
| if (Keyword.startswith("CSK_")) { |
| StrVal.assign(Keyword.begin(), Keyword.end()); |
| return lltok::ChecksumKind; |
| } |
| |
| if (Keyword == "NoDebug" || Keyword == "FullDebug" || |
| Keyword == "LineTablesOnly" || Keyword == "DebugDirectivesOnly") { |
| StrVal.assign(Keyword.begin(), Keyword.end()); |
| return lltok::EmissionKind; |
| } |
| |
| if (Keyword == "GNU" || Keyword == "None" || Keyword == "Default") { |
| StrVal.assign(Keyword.begin(), Keyword.end()); |
| return lltok::NameTableKind; |
| } |
| |
| // Check for [us]0x[0-9A-Fa-f]+ which are Hexadecimal constant generated by |
| // the CFE to avoid forcing it to deal with 64-bit numbers. |
| if ((TokStart[0] == 'u' || TokStart[0] == 's') && |
| TokStart[1] == '0' && TokStart[2] == 'x' && |
| isxdigit(static_cast<unsigned char>(TokStart[3]))) { |
| int len = CurPtr-TokStart-3; |
| uint32_t bits = len * 4; |
| StringRef HexStr(TokStart + 3, len); |
| if (!all_of(HexStr, isxdigit)) { |
| // Bad token, return it as an error. |
| CurPtr = TokStart+3; |
| return lltok::Error; |
| } |
| APInt Tmp(bits, HexStr, 16); |
| uint32_t activeBits = Tmp.getActiveBits(); |
| if (activeBits > 0 && activeBits < bits) |
| Tmp = Tmp.trunc(activeBits); |
| APSIntVal = APSInt(Tmp, TokStart[0] == 'u'); |
| return lltok::APSInt; |
| } |
| |
| // If this is "cc1234", return this as just "cc". |
| if (TokStart[0] == 'c' && TokStart[1] == 'c') { |
| CurPtr = TokStart+2; |
| return lltok::kw_cc; |
| } |
| |
| // Finally, if this isn't known, return an error. |
| CurPtr = TokStart+1; |
| return lltok::Error; |
| } |
| |
| /// Lex all tokens that start with a 0x prefix, knowing they match and are not |
| /// labels. |
| /// HexFPConstant 0x[0-9A-Fa-f]+ |
| /// HexFP80Constant 0xK[0-9A-Fa-f]+ |
| /// HexFP128Constant 0xL[0-9A-Fa-f]+ |
| /// HexPPC128Constant 0xM[0-9A-Fa-f]+ |
| /// HexHalfConstant 0xH[0-9A-Fa-f]+ |
| lltok::Kind LLLexer::Lex0x() { |
| CurPtr = TokStart + 2; |
| |
| char Kind; |
| if ((CurPtr[0] >= 'K' && CurPtr[0] <= 'M') || CurPtr[0] == 'H') { |
| Kind = *CurPtr++; |
| } else { |
| Kind = 'J'; |
| } |
| |
| if (!isxdigit(static_cast<unsigned char>(CurPtr[0]))) { |
| // Bad token, return it as an error. |
| CurPtr = TokStart+1; |
| return lltok::Error; |
| } |
| |
| while (isxdigit(static_cast<unsigned char>(CurPtr[0]))) |
| ++CurPtr; |
| |
| if (Kind == 'J') { |
| // HexFPConstant - Floating point constant represented in IEEE format as a |
| // hexadecimal number for when exponential notation is not precise enough. |
| // Half, Float, and double only. |
| APFloatVal = APFloat(APFloat::IEEEdouble(), |
| APInt(64, HexIntToVal(TokStart + 2, CurPtr))); |
| return lltok::APFloat; |
| } |
| |
| uint64_t Pair[2]; |
| switch (Kind) { |
| default: llvm_unreachable("Unknown kind!"); |
| case 'K': |
| // F80HexFPConstant - x87 long double in hexadecimal format (10 bytes) |
| FP80HexToIntPair(TokStart+3, CurPtr, Pair); |
| APFloatVal = APFloat(APFloat::x87DoubleExtended(), APInt(80, Pair)); |
| return lltok::APFloat; |
| case 'L': |
| // F128HexFPConstant - IEEE 128-bit in hexadecimal format (16 bytes) |
| HexToIntPair(TokStart+3, CurPtr, Pair); |
| APFloatVal = APFloat(APFloat::IEEEquad(), APInt(128, Pair)); |
| return lltok::APFloat; |
| case 'M': |
| // PPC128HexFPConstant - PowerPC 128-bit in hexadecimal format (16 bytes) |
| HexToIntPair(TokStart+3, CurPtr, Pair); |
| APFloatVal = APFloat(APFloat::PPCDoubleDouble(), APInt(128, Pair)); |
| return lltok::APFloat; |
| case 'H': |
| APFloatVal = APFloat(APFloat::IEEEhalf(), |
| APInt(16,HexIntToVal(TokStart+3, CurPtr))); |
| return lltok::APFloat; |
| } |
| } |
| |
| /// Lex tokens for a label or a numeric constant, possibly starting with -. |
| /// Label [-a-zA-Z$._0-9]+: |
| /// NInteger -[0-9]+ |
| /// FPConstant [-+]?[0-9]+[.][0-9]*([eE][-+]?[0-9]+)? |
| /// PInteger [0-9]+ |
| /// HexFPConstant 0x[0-9A-Fa-f]+ |
| /// HexFP80Constant 0xK[0-9A-Fa-f]+ |
| /// HexFP128Constant 0xL[0-9A-Fa-f]+ |
| /// HexPPC128Constant 0xM[0-9A-Fa-f]+ |
| lltok::Kind LLLexer::LexDigitOrNegative() { |
| // If the letter after the negative is not a number, this is probably a label. |
| if (!isdigit(static_cast<unsigned char>(TokStart[0])) && |
| !isdigit(static_cast<unsigned char>(CurPtr[0]))) { |
| // Okay, this is not a number after the -, it's probably a label. |
| if (const char *End = isLabelTail(CurPtr)) { |
| StrVal.assign(TokStart, End-1); |
| CurPtr = End; |
| return lltok::LabelStr; |
| } |
| |
| return lltok::Error; |
| } |
| |
| // At this point, it is either a label, int or fp constant. |
| |
| // Skip digits, we have at least one. |
| for (; isdigit(static_cast<unsigned char>(CurPtr[0])); ++CurPtr) |
| /*empty*/; |
| |
| // Check if this is a fully-numeric label: |
| if (isdigit(TokStart[0]) && CurPtr[0] == ':') { |
| uint64_t Val = atoull(TokStart, CurPtr); |
| ++CurPtr; // Skip the colon. |
| if ((unsigned)Val != Val) |
| Error("invalid value number (too large)!"); |
| UIntVal = unsigned(Val); |
| return lltok::LabelID; |
| } |
| |
| // Check to see if this really is a string label, e.g. "-1:". |
| if (isLabelChar(CurPtr[0]) || CurPtr[0] == ':') { |
| if (const char *End = isLabelTail(CurPtr)) { |
| StrVal.assign(TokStart, End-1); |
| CurPtr = End; |
| return lltok::LabelStr; |
| } |
| } |
| |
| // If the next character is a '.', then it is a fp value, otherwise its |
| // integer. |
| if (CurPtr[0] != '.') { |
| if (TokStart[0] == '0' && TokStart[1] == 'x') |
| return Lex0x(); |
| APSIntVal = APSInt(StringRef(TokStart, CurPtr - TokStart)); |
| return lltok::APSInt; |
| } |
| |
| ++CurPtr; |
| |
| // Skip over [0-9]*([eE][-+]?[0-9]+)? |
| while (isdigit(static_cast<unsigned char>(CurPtr[0]))) ++CurPtr; |
| |
| if (CurPtr[0] == 'e' || CurPtr[0] == 'E') { |
| if (isdigit(static_cast<unsigned char>(CurPtr[1])) || |
| ((CurPtr[1] == '-' || CurPtr[1] == '+') && |
| isdigit(static_cast<unsigned char>(CurPtr[2])))) { |
| CurPtr += 2; |
| while (isdigit(static_cast<unsigned char>(CurPtr[0]))) ++CurPtr; |
| } |
| } |
| |
| APFloatVal = APFloat(APFloat::IEEEdouble(), |
| StringRef(TokStart, CurPtr - TokStart)); |
| return lltok::APFloat; |
| } |
| |
| /// Lex a floating point constant starting with +. |
| /// FPConstant [-+]?[0-9]+[.][0-9]*([eE][-+]?[0-9]+)? |
| lltok::Kind LLLexer::LexPositive() { |
| // If the letter after the negative is a number, this is probably not a |
| // label. |
| if (!isdigit(static_cast<unsigned char>(CurPtr[0]))) |
| return lltok::Error; |
| |
| // Skip digits. |
| for (++CurPtr; isdigit(static_cast<unsigned char>(CurPtr[0])); ++CurPtr) |
| /*empty*/; |
| |
| // At this point, we need a '.'. |
| if (CurPtr[0] != '.') { |
| CurPtr = TokStart+1; |
| return lltok::Error; |
| } |
| |
| ++CurPtr; |
| |
| // Skip over [0-9]*([eE][-+]?[0-9]+)? |
| while (isdigit(static_cast<unsigned char>(CurPtr[0]))) ++CurPtr; |
| |
| if (CurPtr[0] == 'e' || CurPtr[0] == 'E') { |
| if (isdigit(static_cast<unsigned char>(CurPtr[1])) || |
| ((CurPtr[1] == '-' || CurPtr[1] == '+') && |
| isdigit(static_cast<unsigned char>(CurPtr[2])))) { |
| CurPtr += 2; |
| while (isdigit(static_cast<unsigned char>(CurPtr[0]))) ++CurPtr; |
| } |
| } |
| |
| APFloatVal = APFloat(APFloat::IEEEdouble(), |
| StringRef(TokStart, CurPtr - TokStart)); |
| return lltok::APFloat; |
| } |