diff options
| author | Ted Kremenek <kremenek@apple.com> | 2008-12-23 18:41:34 +0000 |
|---|---|---|
| committer | Ted Kremenek <kremenek@apple.com> | 2008-12-23 18:41:34 +0000 |
| commit | 18d9afb815bd8aff885dd64c5078760b3398d7be (patch) | |
| tree | e9ce1d069e39caa5aab098b8c8c9805b940f3553 /lib/Lex/PTHLexer.cpp | |
| parent | 6b1c9708c8fca3786c766b6d1869721656b31322 (diff) | |
PTH: Use 3 bytes instead of 4 bytes to encode the persistent ID for a token.
- This reduces the PTH size for Cocoa.h by 7%.
- The increases PTH -Eonly speed for Cocoa.h by 0.8%.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61377 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Lex/PTHLexer.cpp')
| -rw-r--r-- | lib/Lex/PTHLexer.cpp | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/lib/Lex/PTHLexer.cpp b/lib/Lex/PTHLexer.cpp index dc8f842cec..b60b915d92 100644 --- a/lib/Lex/PTHLexer.cpp +++ b/lib/Lex/PTHLexer.cpp @@ -26,7 +26,7 @@ using namespace clang; -#define DISK_TOKEN_SIZE (2+4+4+2) +#define DISK_TOKEN_SIZE (1+1+3+4+2) //===----------------------------------------------------------------------===// // Utility methods for reading from the mmap'ed PTH file. @@ -69,16 +69,15 @@ LexNextToken: uint32_t perID = ((uint32_t) CurPtrShadow[2]) | (((uint32_t) CurPtrShadow[3]) << 8) - | (((uint32_t) CurPtrShadow[4]) << 16) - | (((uint32_t) CurPtrShadow[5]) << 24); + | (((uint32_t) CurPtrShadow[4]) << 16); - uint32_t FileOffset = ((uint32_t) CurPtrShadow[6]) - | (((uint32_t) CurPtrShadow[7]) << 8) - | (((uint32_t) CurPtrShadow[8]) << 16) - | (((uint32_t) CurPtrShadow[9]) << 24); + uint32_t FileOffset = ((uint32_t) CurPtrShadow[5]) + | (((uint32_t) CurPtrShadow[6]) << 8) + | (((uint32_t) CurPtrShadow[7]) << 16) + | (((uint32_t) CurPtrShadow[8]) << 24); - uint32_t Len = ((uint32_t) CurPtrShadow[10]) - | (((uint32_t) CurPtrShadow[11]) << 8); + uint32_t Len = ((uint32_t) CurPtrShadow[9]) + | (((uint32_t) CurPtrShadow[10]) << 8); CurPtr = (const char*) (CurPtrShadow + DISK_TOKEN_SIZE); |