| //===- LLLexer.cpp - Lexer for .ll Files ----------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Implement the Lexer for .ll files. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "LLLexer.h" |
| #include "llvm/DerivedTypes.h" |
| #include "llvm/Instruction.h" |
| #include "llvm/LLVMContext.h" |
| #include "llvm/Support/ErrorHandling.h" |
| #include "llvm/Support/MemoryBuffer.h" |
| #include "llvm/Support/MathExtras.h" |
| #include "llvm/Support/SourceMgr.h" |
| #include "llvm/Support/raw_ostream.h" |
| #include "llvm/Assembly/Parser.h" |
| #include <cstdio> |
| #include <cstdlib> |
| #include <cstring> |
| using namespace llvm; |
| |
| bool LLLexer::Error(LocTy ErrorLoc, const std::string &Msg) const { |
| ErrorInfo = SM.GetMessage(ErrorLoc, Msg, "error"); |
| return true; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // 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; |
| char C = *Buffer; |
| if (C >= '0' && C <= '9') |
| Result += C-'0'; |
| else if (C >= 'A' && C <= 'F') |
| Result += C-'A'+10; |
| else if (C >= 'a' && C <= 'f') |
| Result += C-'a'+10; |
| |
| 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; |
| for (int i=0; i<16; i++, Buffer++) { |
| assert(Buffer != End); |
| Pair[0] *= 16; |
| char C = *Buffer; |
| if (C >= '0' && C <= '9') |
| Pair[0] += C-'0'; |
| else if (C >= 'A' && C <= 'F') |
| Pair[0] += C-'A'+10; |
| else if (C >= 'a' && C <= 'f') |
| Pair[0] += C-'a'+10; |
| } |
| Pair[1] = 0; |
| for (int i=0; i<16 && Buffer != End; i++, Buffer++) { |
| Pair[1] *= 16; |
| char C = *Buffer; |
| if (C >= '0' && C <= '9') |
| Pair[1] += C-'0'; |
| else if (C >= 'A' && C <= 'F') |
| Pair[1] += C-'A'+10; |
| else if (C >= 'a' && C <= 'f') |
| Pair[1] += C-'a'+10; |
| } |
| 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; |
| char C = *Buffer; |
| if (C >= '0' && C <= '9') |
| Pair[1] += C-'0'; |
| else if (C >= 'A' && C <= 'F') |
| Pair[1] += C-'A'+10; |
| else if (C >= 'a' && C <= 'f') |
| Pair[1] += C-'a'+10; |
| } |
| Pair[0] = 0; |
| for (int i=0; i<16; i++, Buffer++) { |
| Pair[0] *= 16; |
| char C = *Buffer; |
| if (C >= '0' && C <= '9') |
| Pair[0] += C-'0'; |
| else if (C >= 'A' && C <= 'F') |
| Pair[0] += C-'A'+10; |
| else if (C >= 'a' && C <= 'f') |
| Pair[0] += C-'a'+10; |
| } |
| 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(BIn[1]) && isxdigit(BIn[2])) { |
| char Tmp = BIn[3]; BIn[3] = 0; // Terminate string |
| *BOut = (char)strtol(BIn+1, 0, 16); // Convert to number |
| BIn[3] = Tmp; // Restore character |
| BIn += 3; // Skip over handled chars |
| ++BOut; |
| } else { |
| *BOut++ = *BIn++; |
| } |
| } else { |
| *BOut++ = *BIn++; |
| } |
| } |
| Str.resize(BOut-Buffer); |
| } |
| |
| /// isLabelChar - Return true for [-a-zA-Z$._0-9]. |
| static bool isLabelChar(char C) { |
| return isalnum(C) || C == '-' || C == '$' || C == '.' || C == '_'; |
| } |
| |
| |
| /// isLabelTail - Return true if this pointer points to a valid end of a label. |
| static const char *isLabelTail(const char *CurPtr) { |
| while (1) { |
| if (CurPtr[0] == ':') return CurPtr+1; |
| if (!isLabelChar(CurPtr[0])) return 0; |
| ++CurPtr; |
| } |
| } |
| |
| |
| |
| //===----------------------------------------------------------------------===// |
| // Lexer definition. |
| //===----------------------------------------------------------------------===// |
| |
| LLLexer::LLLexer(MemoryBuffer *StartBuf, SourceMgr &sm, SMDiagnostic &Err, |
| LLVMContext &C) |
| : CurBuf(StartBuf), ErrorInfo(Err), SM(sm), Context(C), APFloatVal(0.0) { |
| CurPtr = CurBuf->getBufferStart(); |
| } |
| |
| std::string LLLexer::getFilename() const { |
| return CurBuf->getBufferIdentifier(); |
| } |
| |
| 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->getBufferEnd()) |
| return 0; // Just whitespace. |
| |
| // Otherwise, return end of file. |
| --CurPtr; // Another call to lex will return EOF again. |
| return EOF; |
| } |
| } |
| |
| |
| lltok::Kind LLLexer::LexToken() { |
| TokStart = CurPtr; |
| |
| int CurChar = getNextChar(); |
| switch (CurChar) { |
| default: |
| // Handle letters: [a-zA-Z_] |
| if (isalpha(CurChar) || CurChar == '_') |
| return LexIdentifier(); |
| |
| return lltok::Error; |
| case EOF: return lltok::Eof; |
| case 0: |
| case ' ': |
| case '\t': |
| case '\n': |
| case '\r': |
| // Ignore whitespace. |
| return LexToken(); |
| case '+': return LexPositive(); |
| case '@': return LexAt(); |
| 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 '$': |
| if (const char *Ptr = isLabelTail(CurPtr)) { |
| CurPtr = Ptr; |
| StrVal.assign(TokStart, CurPtr-1); |
| return lltok::LabelStr; |
| } |
| return lltok::Error; |
| case ';': |
| SkipLineComment(); |
| return LexToken(); |
| case '!': return LexExclaim(); |
| case '0': case '1': case '2': case '3': case '4': |
| case '5': case '6': case '7': case '8': case '9': |
| case '-': |
| return LexDigitOrNegative(); |
| case '=': return lltok::equal; |
| case '[': return lltok::lsquare; |
| case ']': return lltok::rsquare; |
| case '{': return lltok::lbrace; |
| case '}': return lltok::rbrace; |
| case '<': return lltok::less; |
| case '>': return lltok::greater; |
| case '(': return lltok::lparen; |
| case ')': return lltok::rparen; |
| case ',': return lltok::comma; |
| case '*': return lltok::star; |
| case '\\': return lltok::backslash; |
| } |
| } |
| |
| void LLLexer::SkipLineComment() { |
| while (1) { |
| if (CurPtr[0] == '\n' || CurPtr[0] == '\r' || getNextChar() == EOF) |
| return; |
| } |
| } |
| |
| /// LexAt - Lex all tokens that start with an @ character: |
| /// GlobalVar @\"[^\"]*\" |
| /// GlobalVar @[-a-zA-Z$._][-a-zA-Z$._0-9]* |
| /// GlobalVarID @[0-9]+ |
| lltok::Kind LLLexer::LexAt() { |
| // Handle AtStringConstant: @\"[^\"]*\" |
| if (CurPtr[0] == '"') { |
| ++CurPtr; |
| |
| while (1) { |
| int CurChar = getNextChar(); |
| |
| if (CurChar == EOF) { |
| Error("end of file in global variable name"); |
| return lltok::Error; |
| } |
| if (CurChar == '"') { |
| StrVal.assign(TokStart+2, CurPtr-1); |
| UnEscapeLexed(StrVal); |
| return lltok::GlobalVar; |
| } |
| } |
| } |
| |
| // Handle GlobalVarName: @[-a-zA-Z$._][-a-zA-Z$._0-9]* |
| if (isalpha(CurPtr[0]) || CurPtr[0] == '-' || CurPtr[0] == '$' || |
| CurPtr[0] == '.' || CurPtr[0] == '_') { |
| ++CurPtr; |
| while (isalnum(CurPtr[0]) || CurPtr[0] == '-' || CurPtr[0] == '$' || |
| CurPtr[0] == '.' || CurPtr[0] == '_') |
| ++CurPtr; |
| |
| StrVal.assign(TokStart+1, CurPtr); // Skip @ |
| return lltok::GlobalVar; |
| } |
| |
| // Handle GlobalVarID: @[0-9]+ |
| if (isdigit(CurPtr[0])) { |
| for (++CurPtr; isdigit(CurPtr[0]); ++CurPtr) |
| /*empty*/; |
| |
| uint64_t Val = atoull(TokStart+1, CurPtr); |
| if ((unsigned)Val != Val) |
| Error("invalid value number (too large)!"); |
| UIntVal = unsigned(Val); |
| return lltok::GlobalID; |
| } |
| |
| return lltok::Error; |
| } |
| |
| |
| /// LexPercent - Lex all tokens that start with a % character: |
| /// LocalVar ::= %\"[^\"]*\" |
| /// LocalVar ::= %[-a-zA-Z$._][-a-zA-Z$._0-9]* |
| /// LocalVarID ::= %[0-9]+ |
| lltok::Kind LLLexer::LexPercent() { |
| // Handle LocalVarName: %\"[^\"]*\" |
| if (CurPtr[0] == '"') { |
| ++CurPtr; |
| |
| while (1) { |
| int CurChar = getNextChar(); |
| |
| if (CurChar == EOF) { |
| Error("end of file in string constant"); |
| return lltok::Error; |
| } |
| if (CurChar == '"') { |
| StrVal.assign(TokStart+2, CurPtr-1); |
| UnEscapeLexed(StrVal); |
| return lltok::LocalVar; |
| } |
| } |
| } |
| |
| // Handle LocalVarName: %[-a-zA-Z$._][-a-zA-Z$._0-9]* |
| if (isalpha(CurPtr[0]) || CurPtr[0] == '-' || CurPtr[0] == '$' || |
| CurPtr[0] == '.' || CurPtr[0] == '_') { |
| ++CurPtr; |
| while (isalnum(CurPtr[0]) || CurPtr[0] == '-' || CurPtr[0] == '$' || |
| CurPtr[0] == '.' || CurPtr[0] == '_') |
| ++CurPtr; |
| |
| StrVal.assign(TokStart+1, CurPtr); // Skip % |
| return lltok::LocalVar; |
| } |
| |
| // Handle LocalVarID: %[0-9]+ |
| if (isdigit(CurPtr[0])) { |
| for (++CurPtr; isdigit(CurPtr[0]); ++CurPtr) |
| /*empty*/; |
| |
| uint64_t Val = atoull(TokStart+1, CurPtr); |
| if ((unsigned)Val != Val) |
| Error("invalid value number (too large)!"); |
| UIntVal = unsigned(Val); |
| return lltok::LocalVarID; |
| } |
| |
| return lltok::Error; |
| } |
| |
| /// LexQuote - Lex all tokens that start with a " character: |
| /// QuoteLabel "[^"]+": |
| /// StringConstant "[^"]*" |
| lltok::Kind LLLexer::LexQuote() { |
| while (1) { |
| int CurChar = getNextChar(); |
| |
| if (CurChar == EOF) { |
| Error("end of file in quoted string"); |
| return lltok::Error; |
| } |
| |
| if (CurChar != '"') continue; |
| |
| if (CurPtr[0] != ':') { |
| StrVal.assign(TokStart+1, CurPtr-1); |
| UnEscapeLexed(StrVal); |
| return lltok::StringConstant; |
| } |
| |
| ++CurPtr; |
| StrVal.assign(TokStart+1, CurPtr-2); |
| UnEscapeLexed(StrVal); |
| return lltok::LabelStr; |
| } |
| } |
| |
| static bool JustWhitespaceNewLine(const char *&Ptr) { |
| const char *ThisPtr = Ptr; |
| while (*ThisPtr == ' ' || *ThisPtr == '\t') |
| ++ThisPtr; |
| if (*ThisPtr == '\n' || *ThisPtr == '\r') { |
| Ptr = ThisPtr; |
| return true; |
| } |
| return false; |
| } |
| |
| /// LexExclaim: |
| /// !foo |
| /// ! |
| lltok::Kind LLLexer::LexExclaim() { |
| // Lex a metadata name as a MetadataVar. |
| if (isalpha(CurPtr[0])) { |
| ++CurPtr; |
| while (isalnum(CurPtr[0]) || CurPtr[0] == '-' || CurPtr[0] == '$' || |
| CurPtr[0] == '.' || CurPtr[0] == '_') |
| ++CurPtr; |
| |
| StrVal.assign(TokStart+1, CurPtr); // Skip ! |
| return lltok::MetadataVar; |
| } |
| return lltok::exclaim; |
| } |
| |
| /// LexIdentifier: Handle several related productions: |
| /// 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' ? 0 : StartChar; |
| const char *KeywordEnd = 0; |
| |
| for (; isLabelChar(*CurPtr); ++CurPtr) { |
| // If we decide this is an integer, remember the end of the sequence. |
| if (!IntEnd && !isdigit(*CurPtr)) IntEnd = CurPtr; |
| if (!KeywordEnd && !isalnum(*CurPtr) && *CurPtr != '_') KeywordEnd = CurPtr; |
| } |
| |
| // If we stopped due to a colon, this really is a label. |
| if (*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 == 0) 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 == 0) KeywordEnd = CurPtr; |
| CurPtr = KeywordEnd; |
| --StartChar; |
| unsigned Len = CurPtr-StartChar; |
| #define KEYWORD(STR) \ |
| if (Len == strlen(#STR) && !memcmp(StartChar, #STR, strlen(#STR))) \ |
| return lltok::kw_##STR; |
| |
| KEYWORD(begin); KEYWORD(end); |
| KEYWORD(true); KEYWORD(false); |
| KEYWORD(declare); KEYWORD(define); |
| KEYWORD(global); KEYWORD(constant); |
| |
| KEYWORD(private); |
| KEYWORD(linker_private); |
| KEYWORD(internal); |
| KEYWORD(available_externally); |
| KEYWORD(linkonce); |
| KEYWORD(linkonce_odr); |
| KEYWORD(weak); |
| KEYWORD(weak_odr); |
| KEYWORD(appending); |
| KEYWORD(dllimport); |
| KEYWORD(dllexport); |
| KEYWORD(common); |
| KEYWORD(default); |
| KEYWORD(hidden); |
| KEYWORD(protected); |
| KEYWORD(extern_weak); |
| KEYWORD(external); |
| KEYWORD(thread_local); |
| KEYWORD(zeroinitializer); |
| KEYWORD(undef); |
| KEYWORD(null); |
| KEYWORD(to); |
| KEYWORD(tail); |
| KEYWORD(target); |
| KEYWORD(triple); |
| KEYWORD(deplibs); |
| KEYWORD(datalayout); |
| KEYWORD(volatile); |
| KEYWORD(nuw); |
| KEYWORD(nsw); |
| KEYWORD(exact); |
| KEYWORD(inbounds); |
| KEYWORD(align); |
| KEYWORD(addrspace); |
| KEYWORD(section); |
| KEYWORD(alias); |
| KEYWORD(module); |
| KEYWORD(asm); |
| KEYWORD(sideeffect); |
| KEYWORD(alignstack); |
| KEYWORD(gc); |
| |
| KEYWORD(ccc); |
| KEYWORD(fastcc); |
| KEYWORD(coldcc); |
| KEYWORD(x86_stdcallcc); |
| KEYWORD(x86_fastcallcc); |
| KEYWORD(arm_apcscc); |
| KEYWORD(arm_aapcscc); |
| KEYWORD(arm_aapcs_vfpcc); |
| KEYWORD(msp430_intrcc); |
| |
| KEYWORD(cc); |
| KEYWORD(c); |
| |
| KEYWORD(signext); |
| KEYWORD(zeroext); |
| KEYWORD(inreg); |
| KEYWORD(sret); |
| KEYWORD(nounwind); |
| KEYWORD(noreturn); |
| KEYWORD(noalias); |
| KEYWORD(nocapture); |
| KEYWORD(byval); |
| KEYWORD(nest); |
| KEYWORD(readnone); |
| KEYWORD(readonly); |
| |
| KEYWORD(inlinehint); |
| KEYWORD(noinline); |
| KEYWORD(alwaysinline); |
| KEYWORD(optsize); |
| KEYWORD(ssp); |
| KEYWORD(sspreq); |
| KEYWORD(noredzone); |
| KEYWORD(noimplicitfloat); |
| KEYWORD(naked); |
| |
| KEYWORD(type); |
| KEYWORD(opaque); |
| |
| 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(x); |
| KEYWORD(blockaddress); |
| #undef KEYWORD |
| |
| // Keywords for types. |
| #define TYPEKEYWORD(STR, LLVMTY) \ |
| if (Len == strlen(STR) && !memcmp(StartChar, STR, strlen(STR))) { \ |
| TyVal = LLVMTY; return lltok::Type; } |
| TYPEKEYWORD("void", Type::getVoidTy(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)); |
| #undef TYPEKEYWORD |
| |
| // Handle special forms for autoupgrading. Drop these in LLVM 3.0. This is |
| // to avoid conflicting with the sext/zext instructions, below. |
| if (Len == 4 && !memcmp(StartChar, "sext", 4)) { |
| // Scan CurPtr ahead, seeing if there is just whitespace before the newline. |
| if (JustWhitespaceNewLine(CurPtr)) |
| return lltok::kw_signext; |
| } else if (Len == 4 && !memcmp(StartChar, "zext", 4)) { |
| // Scan CurPtr ahead, seeing if there is just whitespace before the newline. |
| if (JustWhitespaceNewLine(CurPtr)) |
| return lltok::kw_zeroext; |
| } else if (Len == 6 && !memcmp(StartChar, "malloc", 6)) { |
| // FIXME: Remove in LLVM 3.0. |
| // Autoupgrade malloc instruction. |
| return lltok::kw_malloc; |
| } else if (Len == 4 && !memcmp(StartChar, "free", 4)) { |
| // FIXME: Remove in LLVM 3.0. |
| // Autoupgrade malloc instruction. |
| return lltok::kw_free; |
| } |
| |
| // Keywords for instructions. |
| #define INSTKEYWORD(STR, Enum) \ |
| if (Len == strlen(#STR) && !memcmp(StartChar, #STR, strlen(#STR))) { \ |
| UIntVal = Instruction::Enum; return lltok::kw_##STR; } |
| |
| 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(select, Select); |
| INSTKEYWORD(va_arg, VAArg); |
| INSTKEYWORD(ret, Ret); |
| INSTKEYWORD(br, Br); |
| INSTKEYWORD(switch, Switch); |
| INSTKEYWORD(indirectbr, IndirectBr); |
| INSTKEYWORD(invoke, Invoke); |
| INSTKEYWORD(unwind, Unwind); |
| INSTKEYWORD(unreachable, Unreachable); |
| |
| INSTKEYWORD(alloca, Alloca); |
| INSTKEYWORD(load, Load); |
| INSTKEYWORD(store, Store); |
| INSTKEYWORD(getelementptr, GetElementPtr); |
| |
| INSTKEYWORD(extractelement, ExtractElement); |
| INSTKEYWORD(insertelement, InsertElement); |
| INSTKEYWORD(shufflevector, ShuffleVector); |
| INSTKEYWORD(getresult, ExtractValue); |
| INSTKEYWORD(extractvalue, ExtractValue); |
| INSTKEYWORD(insertvalue, InsertValue); |
| #undef INSTKEYWORD |
| |
| // 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(TokStart[3])) { |
| int len = CurPtr-TokStart-3; |
| uint32_t bits = len * 4; |
| APInt Tmp(bits, StringRef(TokStart+3, len), 16); |
| uint32_t activeBits = Tmp.getActiveBits(); |
| if (activeBits > 0 && activeBits < bits) |
| 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; |
| } |
| |
| // If this starts with "call", return it as CALL. This is to support old |
| // broken .ll files. FIXME: remove this with LLVM 3.0. |
| if (CurPtr-TokStart > 4 && !memcmp(TokStart, "call", 4)) { |
| CurPtr = TokStart+4; |
| UIntVal = Instruction::Call; |
| return lltok::kw_call; |
| } |
| |
| // Finally, if this isn't known, return an error. |
| CurPtr = TokStart+1; |
| return lltok::Error; |
| } |
| |
| |
| /// Lex0x: Handle productions that start with 0x, knowing that it matches and |
| /// that this is not a label: |
| /// 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::Lex0x() { |
| CurPtr = TokStart + 2; |
| |
| char Kind; |
| if (CurPtr[0] >= 'K' && CurPtr[0] <= 'M') { |
| Kind = *CurPtr++; |
| } else { |
| Kind = 'J'; |
| } |
| |
| if (!isxdigit(CurPtr[0])) { |
| // Bad token, return it as an error. |
| CurPtr = TokStart+1; |
| return lltok::Error; |
| } |
| |
| while (isxdigit(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. |
| // Float and double only. |
| APFloatVal = APFloat(BitsToDouble(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(APInt(80, 2, Pair)); |
| return lltok::APFloat; |
| case 'L': |
| // F128HexFPConstant - IEEE 128-bit in hexadecimal format (16 bytes) |
| HexToIntPair(TokStart+3, CurPtr, Pair); |
| APFloatVal = APFloat(APInt(128, 2, Pair), true); |
| return lltok::APFloat; |
| case 'M': |
| // PPC128HexFPConstant - PowerPC 128-bit in hexadecimal format (16 bytes) |
| HexToIntPair(TokStart+3, CurPtr, Pair); |
| APFloatVal = APFloat(APInt(128, 2, Pair)); |
| return lltok::APFloat; |
| } |
| } |
| |
| /// LexIdentifier: Handle several related productions: |
| /// 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 a number, this is probably a label. |
| if (!isdigit(TokStart[0]) && !isdigit(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(CurPtr[0]); ++CurPtr) |
| /*empty*/; |
| |
| // Check to see if this really is a label afterall, 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(); |
| unsigned Len = CurPtr-TokStart; |
| uint32_t numBits = ((Len * 64) / 19) + 2; |
| APInt Tmp(numBits, StringRef(TokStart, Len), 10); |
| if (TokStart[0] == '-') { |
| uint32_t minBits = Tmp.getMinSignedBits(); |
| if (minBits > 0 && minBits < numBits) |
| Tmp.trunc(minBits); |
| APSIntVal = APSInt(Tmp, false); |
| } else { |
| uint32_t activeBits = Tmp.getActiveBits(); |
| if (activeBits > 0 && activeBits < numBits) |
| Tmp.trunc(activeBits); |
| APSIntVal = APSInt(Tmp, true); |
| } |
| return lltok::APSInt; |
| } |
| |
| ++CurPtr; |
| |
| // Skip over [0-9]*([eE][-+]?[0-9]+)? |
| while (isdigit(CurPtr[0])) ++CurPtr; |
| |
| if (CurPtr[0] == 'e' || CurPtr[0] == 'E') { |
| if (isdigit(CurPtr[1]) || |
| ((CurPtr[1] == '-' || CurPtr[1] == '+') && isdigit(CurPtr[2]))) { |
| CurPtr += 2; |
| while (isdigit(CurPtr[0])) ++CurPtr; |
| } |
| } |
| |
| APFloatVal = APFloat(atof(TokStart)); |
| return lltok::APFloat; |
| } |
| |
| /// 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(CurPtr[0])) |
| return lltok::Error; |
| |
| // Skip digits. |
| for (++CurPtr; isdigit(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(CurPtr[0])) ++CurPtr; |
| |
| if (CurPtr[0] == 'e' || CurPtr[0] == 'E') { |
| if (isdigit(CurPtr[1]) || |
| ((CurPtr[1] == '-' || CurPtr[1] == '+') && isdigit(CurPtr[2]))) { |
| CurPtr += 2; |
| while (isdigit(CurPtr[0])) ++CurPtr; |
| } |
| } |
| |
| APFloatVal = APFloat(atof(TokStart)); |
| return lltok::APFloat; |
| } |