- 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
- Encode the token length with 2 bytes instead of 4.
- This reduces the size of the .pth file for Cocoa.h by 12%.
- This speeds up PTH time (-Eonly) on Cocoa.h by 1.6%.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61364 91177308-0d34-0410-b5e6-96231b3b80d8
- Embed 'eom' tokens in PTH file.
- Use embedded 'eom' tokens to not lazily generate them in the PTHLexer.
This means that PTHLexer can always advance to the next token after
reading a token (instead of buffering tokens using a copy).
- Moved logic of 'ReadToken' into Lex. GetToken & ReadToken no longer exist.
- These changes result in a 3.3% speedup (-Eonly) on Cocoa.h.
- The code is a little gross. Many cleanups are possible and should be done.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61360 91177308-0d34-0410-b5e6-96231b3b80d8
- Added a side-table per each token-cached file with the preprocessor conditional stack. This tracks what #if's are matched with what #endifs and where their respective tokens are in the PTH file. This will allow for quick skipping of excluded conditional branches in the Preprocessor.
- Performance testing shows the addition of this information (without actually utilizing it) leads to no performance regressions.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60911 91177308-0d34-0410-b5e6-96231b3b80d8
Use an array instead of a DenseMap to cache persistent IDs -> IdentifierInfo*. This leads to a 4% speedup at -fsyntax-only using PTH.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60452 91177308-0d34-0410-b5e6-96231b3b80d8
- Output 32 bit integers using bit-shifting + write of individual bytes.
This is motivated because we aren't guaranteed to load 32-bit ints of the mmaped PTH file at 4-byte offsets.
- Don't emit flags for IdentifierInfos. These are lazily populated by the Preprocessor/Parser.
- Only write out tokens for files with absolute paths. This is potentially temporary, but simplifies things for now.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60435 91177308-0d34-0410-b5e6-96231b3b80d8
- a table including the IdentifierInfo data
- an index from persistent IdentifierInfo IDs to indices within this file.
- Enhance PTH generation to write out file map information, mapping inodes to tokens.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60132 91177308-0d34-0410-b5e6-96231b3b80d8
the Backend output should be done in binary mode.
- I'd appreciate it if someone who has a Windows build could verify
this.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59221 91177308-0d34-0410-b5e6-96231b3b80d8
Chris Lattner
Ted Kremenek
Daniel Dunbar