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970bfcc7d8
instruction at the beginning of each function that has the attribute, allowing the function to be easily hooked and/or patched. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117264 91177308-0d34-0410-b5e6-96231b3b80d8
873 lines
25 KiB
C++
873 lines
25 KiB
C++
//===- LLLexer.cpp - Lexer for .ll Files ----------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Implement the Lexer for .ll files.
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//
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//===----------------------------------------------------------------------===//
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#include "LLLexer.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/Instruction.h"
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#include "llvm/LLVMContext.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/Assembly/Parser.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/MathExtras.h"
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#include "llvm/Support/SourceMgr.h"
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#include "llvm/Support/raw_ostream.h"
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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using namespace llvm;
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bool LLLexer::Error(LocTy ErrorLoc, const Twine &Msg) const {
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ErrorInfo = SM.GetMessage(ErrorLoc, Msg, "error");
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return true;
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}
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//===----------------------------------------------------------------------===//
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// Helper functions.
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//===----------------------------------------------------------------------===//
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// atoull - Convert an ascii string of decimal digits into the unsigned long
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// long representation... this does not have to do input error checking,
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// because we know that the input will be matched by a suitable regex...
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//
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uint64_t LLLexer::atoull(const char *Buffer, const char *End) {
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uint64_t Result = 0;
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for (; Buffer != End; Buffer++) {
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uint64_t OldRes = Result;
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Result *= 10;
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Result += *Buffer-'0';
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if (Result < OldRes) { // Uh, oh, overflow detected!!!
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Error("constant bigger than 64 bits detected!");
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return 0;
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}
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}
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return Result;
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}
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uint64_t LLLexer::HexIntToVal(const char *Buffer, const char *End) {
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uint64_t Result = 0;
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for (; Buffer != End; ++Buffer) {
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uint64_t OldRes = Result;
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Result *= 16;
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char C = *Buffer;
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if (C >= '0' && C <= '9')
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Result += C-'0';
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else if (C >= 'A' && C <= 'F')
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Result += C-'A'+10;
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else if (C >= 'a' && C <= 'f')
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Result += C-'a'+10;
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if (Result < OldRes) { // Uh, oh, overflow detected!!!
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Error("constant bigger than 64 bits detected!");
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return 0;
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}
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}
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return Result;
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}
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void LLLexer::HexToIntPair(const char *Buffer, const char *End,
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uint64_t Pair[2]) {
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Pair[0] = 0;
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for (int i=0; i<16; i++, Buffer++) {
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assert(Buffer != End);
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Pair[0] *= 16;
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char C = *Buffer;
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if (C >= '0' && C <= '9')
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Pair[0] += C-'0';
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else if (C >= 'A' && C <= 'F')
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Pair[0] += C-'A'+10;
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else if (C >= 'a' && C <= 'f')
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Pair[0] += C-'a'+10;
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}
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Pair[1] = 0;
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for (int i=0; i<16 && Buffer != End; i++, Buffer++) {
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Pair[1] *= 16;
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char C = *Buffer;
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if (C >= '0' && C <= '9')
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Pair[1] += C-'0';
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else if (C >= 'A' && C <= 'F')
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Pair[1] += C-'A'+10;
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else if (C >= 'a' && C <= 'f')
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Pair[1] += C-'a'+10;
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}
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if (Buffer != End)
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Error("constant bigger than 128 bits detected!");
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}
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/// FP80HexToIntPair - translate an 80 bit FP80 number (20 hexits) into
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/// { low64, high16 } as usual for an APInt.
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void LLLexer::FP80HexToIntPair(const char *Buffer, const char *End,
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uint64_t Pair[2]) {
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Pair[1] = 0;
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for (int i=0; i<4 && Buffer != End; i++, Buffer++) {
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assert(Buffer != End);
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Pair[1] *= 16;
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char C = *Buffer;
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if (C >= '0' && C <= '9')
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Pair[1] += C-'0';
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else if (C >= 'A' && C <= 'F')
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Pair[1] += C-'A'+10;
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else if (C >= 'a' && C <= 'f')
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Pair[1] += C-'a'+10;
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}
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Pair[0] = 0;
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for (int i=0; i<16; i++, Buffer++) {
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Pair[0] *= 16;
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char C = *Buffer;
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if (C >= '0' && C <= '9')
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Pair[0] += C-'0';
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else if (C >= 'A' && C <= 'F')
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Pair[0] += C-'A'+10;
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else if (C >= 'a' && C <= 'f')
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Pair[0] += C-'a'+10;
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}
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if (Buffer != End)
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Error("constant bigger than 128 bits detected!");
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}
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// UnEscapeLexed - Run through the specified buffer and change \xx codes to the
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// appropriate character.
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static void UnEscapeLexed(std::string &Str) {
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if (Str.empty()) return;
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char *Buffer = &Str[0], *EndBuffer = Buffer+Str.size();
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char *BOut = Buffer;
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for (char *BIn = Buffer; BIn != EndBuffer; ) {
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if (BIn[0] == '\\') {
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if (BIn < EndBuffer-1 && BIn[1] == '\\') {
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*BOut++ = '\\'; // Two \ becomes one
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BIn += 2;
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} else if (BIn < EndBuffer-2 && isxdigit(BIn[1]) && isxdigit(BIn[2])) {
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char Tmp = BIn[3]; BIn[3] = 0; // Terminate string
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*BOut = (char)strtol(BIn+1, 0, 16); // Convert to number
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BIn[3] = Tmp; // Restore character
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BIn += 3; // Skip over handled chars
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++BOut;
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} else {
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*BOut++ = *BIn++;
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}
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} else {
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*BOut++ = *BIn++;
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}
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}
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Str.resize(BOut-Buffer);
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}
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/// isLabelChar - Return true for [-a-zA-Z$._0-9].
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static bool isLabelChar(char C) {
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return isalnum(C) || C == '-' || C == '$' || C == '.' || C == '_';
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}
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/// isLabelTail - Return true if this pointer points to a valid end of a label.
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static const char *isLabelTail(const char *CurPtr) {
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while (1) {
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if (CurPtr[0] == ':') return CurPtr+1;
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if (!isLabelChar(CurPtr[0])) return 0;
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++CurPtr;
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}
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}
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//===----------------------------------------------------------------------===//
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// Lexer definition.
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//===----------------------------------------------------------------------===//
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LLLexer::LLLexer(MemoryBuffer *StartBuf, SourceMgr &sm, SMDiagnostic &Err,
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LLVMContext &C)
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: CurBuf(StartBuf), ErrorInfo(Err), SM(sm), Context(C), APFloatVal(0.0) {
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CurPtr = CurBuf->getBufferStart();
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}
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std::string LLLexer::getFilename() const {
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return CurBuf->getBufferIdentifier();
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}
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int LLLexer::getNextChar() {
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char CurChar = *CurPtr++;
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switch (CurChar) {
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default: return (unsigned char)CurChar;
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case 0:
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// A nul character in the stream is either the end of the current buffer or
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// a random nul in the file. Disambiguate that here.
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if (CurPtr-1 != CurBuf->getBufferEnd())
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return 0; // Just whitespace.
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// Otherwise, return end of file.
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--CurPtr; // Another call to lex will return EOF again.
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return EOF;
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}
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}
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lltok::Kind LLLexer::LexToken() {
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TokStart = CurPtr;
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int CurChar = getNextChar();
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switch (CurChar) {
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default:
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// Handle letters: [a-zA-Z_]
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if (isalpha(CurChar) || CurChar == '_')
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return LexIdentifier();
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return lltok::Error;
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case EOF: return lltok::Eof;
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case 0:
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case ' ':
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case '\t':
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case '\n':
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case '\r':
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// Ignore whitespace.
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return LexToken();
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case '+': return LexPositive();
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case '@': return LexAt();
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case '%': return LexPercent();
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case '"': return LexQuote();
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case '.':
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if (const char *Ptr = isLabelTail(CurPtr)) {
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CurPtr = Ptr;
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StrVal.assign(TokStart, CurPtr-1);
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return lltok::LabelStr;
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}
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if (CurPtr[0] == '.' && CurPtr[1] == '.') {
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CurPtr += 2;
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return lltok::dotdotdot;
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}
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return lltok::Error;
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case '$':
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if (const char *Ptr = isLabelTail(CurPtr)) {
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CurPtr = Ptr;
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StrVal.assign(TokStart, CurPtr-1);
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return lltok::LabelStr;
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}
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return lltok::Error;
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case ';':
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SkipLineComment();
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return LexToken();
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case '!': return LexExclaim();
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case '0': case '1': case '2': case '3': case '4':
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case '5': case '6': case '7': case '8': case '9':
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case '-':
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return LexDigitOrNegative();
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case '=': return lltok::equal;
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case '[': return lltok::lsquare;
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case ']': return lltok::rsquare;
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case '{': return lltok::lbrace;
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case '}': return lltok::rbrace;
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case '<': return lltok::less;
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case '>': return lltok::greater;
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case '(': return lltok::lparen;
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case ')': return lltok::rparen;
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case ',': return lltok::comma;
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case '*': return lltok::star;
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case '\\': return lltok::backslash;
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}
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}
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void LLLexer::SkipLineComment() {
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while (1) {
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if (CurPtr[0] == '\n' || CurPtr[0] == '\r' || getNextChar() == EOF)
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return;
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}
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}
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/// LexAt - Lex all tokens that start with an @ character:
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/// GlobalVar @\"[^\"]*\"
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/// GlobalVar @[-a-zA-Z$._][-a-zA-Z$._0-9]*
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/// GlobalVarID @[0-9]+
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lltok::Kind LLLexer::LexAt() {
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// Handle AtStringConstant: @\"[^\"]*\"
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if (CurPtr[0] == '"') {
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++CurPtr;
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while (1) {
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int CurChar = getNextChar();
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if (CurChar == EOF) {
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Error("end of file in global variable name");
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return lltok::Error;
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}
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if (CurChar == '"') {
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StrVal.assign(TokStart+2, CurPtr-1);
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UnEscapeLexed(StrVal);
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return lltok::GlobalVar;
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}
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}
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}
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// Handle GlobalVarName: @[-a-zA-Z$._][-a-zA-Z$._0-9]*
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if (isalpha(CurPtr[0]) || CurPtr[0] == '-' || CurPtr[0] == '$' ||
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CurPtr[0] == '.' || CurPtr[0] == '_') {
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++CurPtr;
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while (isalnum(CurPtr[0]) || CurPtr[0] == '-' || CurPtr[0] == '$' ||
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CurPtr[0] == '.' || CurPtr[0] == '_')
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++CurPtr;
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StrVal.assign(TokStart+1, CurPtr); // Skip @
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return lltok::GlobalVar;
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}
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// Handle GlobalVarID: @[0-9]+
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if (isdigit(CurPtr[0])) {
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for (++CurPtr; isdigit(CurPtr[0]); ++CurPtr)
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/*empty*/;
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uint64_t Val = atoull(TokStart+1, CurPtr);
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if ((unsigned)Val != Val)
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Error("invalid value number (too large)!");
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UIntVal = unsigned(Val);
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return lltok::GlobalID;
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}
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return lltok::Error;
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}
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/// LexPercent - Lex all tokens that start with a % character:
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/// LocalVar ::= %\"[^\"]*\"
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/// LocalVar ::= %[-a-zA-Z$._][-a-zA-Z$._0-9]*
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/// LocalVarID ::= %[0-9]+
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lltok::Kind LLLexer::LexPercent() {
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// Handle LocalVarName: %\"[^\"]*\"
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if (CurPtr[0] == '"') {
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++CurPtr;
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while (1) {
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int CurChar = getNextChar();
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if (CurChar == EOF) {
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Error("end of file in string constant");
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return lltok::Error;
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}
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if (CurChar == '"') {
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StrVal.assign(TokStart+2, CurPtr-1);
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UnEscapeLexed(StrVal);
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return lltok::LocalVar;
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}
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}
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}
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// Handle LocalVarName: %[-a-zA-Z$._][-a-zA-Z$._0-9]*
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if (isalpha(CurPtr[0]) || CurPtr[0] == '-' || CurPtr[0] == '$' ||
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CurPtr[0] == '.' || CurPtr[0] == '_') {
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++CurPtr;
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while (isalnum(CurPtr[0]) || CurPtr[0] == '-' || CurPtr[0] == '$' ||
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CurPtr[0] == '.' || CurPtr[0] == '_')
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++CurPtr;
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StrVal.assign(TokStart+1, CurPtr); // Skip %
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return lltok::LocalVar;
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}
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// Handle LocalVarID: %[0-9]+
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if (isdigit(CurPtr[0])) {
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for (++CurPtr; isdigit(CurPtr[0]); ++CurPtr)
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/*empty*/;
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uint64_t Val = atoull(TokStart+1, CurPtr);
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if ((unsigned)Val != Val)
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Error("invalid value number (too large)!");
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UIntVal = unsigned(Val);
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return lltok::LocalVarID;
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}
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return lltok::Error;
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}
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/// LexQuote - Lex all tokens that start with a " character:
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/// QuoteLabel "[^"]+":
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/// StringConstant "[^"]*"
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lltok::Kind LLLexer::LexQuote() {
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while (1) {
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int CurChar = getNextChar();
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if (CurChar == EOF) {
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Error("end of file in quoted string");
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return lltok::Error;
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}
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if (CurChar != '"') continue;
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if (CurPtr[0] != ':') {
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StrVal.assign(TokStart+1, CurPtr-1);
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UnEscapeLexed(StrVal);
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return lltok::StringConstant;
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}
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++CurPtr;
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StrVal.assign(TokStart+1, CurPtr-2);
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UnEscapeLexed(StrVal);
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return lltok::LabelStr;
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}
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}
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static bool JustWhitespaceNewLine(const char *&Ptr) {
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const char *ThisPtr = Ptr;
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while (*ThisPtr == ' ' || *ThisPtr == '\t')
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++ThisPtr;
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if (*ThisPtr == '\n' || *ThisPtr == '\r') {
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Ptr = ThisPtr;
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return true;
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}
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return false;
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}
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/// LexExclaim:
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/// !foo
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/// !
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lltok::Kind LLLexer::LexExclaim() {
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// Lex a metadata name as a MetadataVar.
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if (isalpha(CurPtr[0])) {
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++CurPtr;
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while (isalnum(CurPtr[0]) || CurPtr[0] == '-' || CurPtr[0] == '$' ||
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CurPtr[0] == '.' || CurPtr[0] == '_')
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++CurPtr;
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StrVal.assign(TokStart+1, CurPtr); // Skip !
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return lltok::MetadataVar;
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}
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return lltok::exclaim;
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}
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/// LexIdentifier: Handle several related productions:
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/// Label [-a-zA-Z$._0-9]+:
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/// IntegerType i[0-9]+
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/// Keyword sdiv, float, ...
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/// HexIntConstant [us]0x[0-9A-Fa-f]+
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lltok::Kind LLLexer::LexIdentifier() {
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const char *StartChar = CurPtr;
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const char *IntEnd = CurPtr[-1] == 'i' ? 0 : StartChar;
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const char *KeywordEnd = 0;
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for (; isLabelChar(*CurPtr); ++CurPtr) {
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// If we decide this is an integer, remember the end of the sequence.
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if (!IntEnd && !isdigit(*CurPtr)) IntEnd = CurPtr;
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if (!KeywordEnd && !isalnum(*CurPtr) && *CurPtr != '_') KeywordEnd = CurPtr;
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}
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// If we stopped due to a colon, this really is a label.
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if (*CurPtr == ':') {
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StrVal.assign(StartChar-1, CurPtr++);
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return lltok::LabelStr;
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}
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// Otherwise, this wasn't a label. If this was valid as an integer type,
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// return it.
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if (IntEnd == 0) IntEnd = CurPtr;
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if (IntEnd != StartChar) {
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CurPtr = IntEnd;
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uint64_t NumBits = atoull(StartChar, CurPtr);
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if (NumBits < IntegerType::MIN_INT_BITS ||
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NumBits > IntegerType::MAX_INT_BITS) {
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Error("bitwidth for integer type out of range!");
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return lltok::Error;
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}
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TyVal = IntegerType::get(Context, NumBits);
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return lltok::Type;
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}
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// Otherwise, this was a letter sequence. See which keyword this is.
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if (KeywordEnd == 0) KeywordEnd = CurPtr;
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CurPtr = KeywordEnd;
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--StartChar;
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unsigned Len = CurPtr-StartChar;
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#define KEYWORD(STR) \
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if (Len == strlen(#STR) && !memcmp(StartChar, #STR, strlen(#STR))) \
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return lltok::kw_##STR;
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KEYWORD(begin); KEYWORD(end);
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KEYWORD(true); KEYWORD(false);
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KEYWORD(declare); KEYWORD(define);
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KEYWORD(global); KEYWORD(constant);
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KEYWORD(private);
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KEYWORD(linker_private);
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KEYWORD(linker_private_weak);
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KEYWORD(linker_private_weak_def_auto);
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|
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(x86_thiscallcc);
|
|
KEYWORD(arm_apcscc);
|
|
KEYWORD(arm_aapcscc);
|
|
KEYWORD(arm_aapcs_vfpcc);
|
|
KEYWORD(msp430_intrcc);
|
|
KEYWORD(ptx_kernel);
|
|
KEYWORD(ptx_device);
|
|
|
|
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(hotpatch);
|
|
|
|
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));
|
|
TYPEKEYWORD("x86_mmx", Type::getX86_MMXTy(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;
|
|
}
|