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minor cleanups: now that tokens are 4-byte aligned in a PTH 

file, just load them directly as ints.

llvm-svn: 62668
This commit is contained in:
Chris Lattner 2009-01-21 07:06:08 +00:00
parent fe32cc0ba6
commit a74f7cbb9d
1 changed files with 6 additions and 22 deletions
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28
clang/lib/Lex/PTHLexer.cpp
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@ -50,22 +50,6 @@ static inline uint16_t Read16(const unsigned char *&Data) {
return V;
}
static inline uint32_t Read24(const unsigned char *&Data) {
// Targets that directly support unaligned little-endian 16-bit loads can just
// use them.
#if defined(__i386__) || defined(__x86_64__)
uint32_t V = ((uint16_t*)Data)[0] |
((uint32_t)Data[2] << 16);
#else
uint32_t V = ((uint32_t)Data[0] << 0) |
((uint32_t)Data[1] << 8) |
((uint32_t)Data[2] << 16);
#endif
Data += 3;
return V;
}
static inline uint32_t Read32(const unsigned char *&Data) {
// Targets that directly support unaligned little-endian 32-bit loads can just
// use them.
@ -104,18 +88,18 @@ LexNextToken:
//===--------------------------------------==//
// Shadow CurPtr into an automatic variable.
const unsigned char *CurPtrShadow = CurPtr;
const unsigned *CurPtrShadow = (const unsigned *)CurPtr;
// Read in the data for the token.
unsigned Word0 = Read32(CurPtrShadow);
uint32_t IdentifierID = Read32(CurPtrShadow);
uint32_t FileOffset = Read32(CurPtrShadow);
unsigned Word0 = CurPtrShadow[0];
unsigned IdentifierID = CurPtrShadow[1];
unsigned FileOffset = CurPtrShadow[2];
tok::TokenKind TKind = (tok::TokenKind) (Word0 & 0xFF);
Token::TokenFlags TFlags = (Token::TokenFlags) ((Word0 >> 8) & 0xFF);
uint32_t Len = Word0 >> 16;
unsigned Len = Word0 >> 16;
CurPtr = CurPtrShadow;
CurPtr = (const unsigned char*)(CurPtrShadow+3);
//===--------------------------------------==//
// Construct the token itself.