diff options
| author | Ted Kremenek <kremenek@apple.com> | 2009-01-15 01:26:25 +0000 |
|---|---|---|
| committer | Ted Kremenek <kremenek@apple.com> | 2009-01-15 01:26:25 +0000 |
| commit | 293b4af04ca37576d4b228adf09acd6cee3ddb16 (patch) | |
| tree | 9388b48e778985d7933af653e4b7efcae4944be9 /lib/Lex/PTHLexer.cpp | |
| parent | 7176fff961e04c4dff61efb967b1d344d41335a7 (diff) | |
PTH: Embed a persistentID side-table in the PTH file that is sorted in the
lexical order of the corresponding identifier strings. This will be used for a
forthcoming optimization. This slows down PTH generation time by 7%. We can
revert this change if the optimization proves to not be valuable.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62248 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Lex/PTHLexer.cpp')
| -rw-r--r-- | lib/Lex/PTHLexer.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/Lex/PTHLexer.cpp b/lib/Lex/PTHLexer.cpp index 8d04736ced..86c65771fd 100644 --- a/lib/Lex/PTHLexer.cpp +++ b/lib/Lex/PTHLexer.cpp @@ -538,11 +538,12 @@ PTHManager* PTHManager::Create(const std::string& file, Preprocessor& PP) { // Compute the address of the index table at the end of the PTH file. // This table contains the offset of the file lookup table, the // persistent ID -> identifer data table. - const char* EndTable = BufEnd - sizeof(uint32_t)*3; + // FIXME: We should just embed this offset in the PTH file. + const char* EndTable = BufEnd - sizeof(uint32_t)*4; // Construct the file lookup table. This will be used for mapping from // FileEntry*'s to cached tokens. - const char* FileTableOffset = EndTable + sizeof(uint32_t)*2; + const char* FileTableOffset = EndTable + sizeof(uint32_t)*3; const char* FileTable = BufBeg + Read32(FileTableOffset); if (!(FileTable > BufBeg && FileTable < BufEnd)) { |