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| author | Ted Kremenek <kremenek@apple.com> | 2009-02-12 03:26:59 +0000 |
|---|---|---|
| committer | Ted Kremenek <kremenek@apple.com> | 2009-02-12 03:26:59 +0000 |
| commit | a5c2c27ebd5c714105b526b0317a192bf75f1659 (patch) | |
| tree | 4949f08c4a7ccd100911ebaeaf765872bd75353a /llvm/lib/Bitcode/Reader/BitcodeReader.cpp | |
| parent | b92c4d72a7fee4cb18f5917f2456fd0713d52d60 (diff) | |
| download | bcm5719-llvm-a5c2c27ebd5c714105b526b0317a192bf75f1659.tar.gz bcm5719-llvm-a5c2c27ebd5c714105b526b0317a192bf75f1659.zip | |
PTH: Cache stat information for files in the PTH file. Hook up FileManager
to use this stat information in the PTH file using a 'StatSysCallCache' object.
Performance impact (Cocoa.h, PTH):
- number of stat calls reduces from 1230 to 425
- fsyntax-only: time improves by 4.2%
We can reduce the number of stat calls to almost zero by caching negative stat
calls and directory stat calls in the PTH file as well.
llvm-svn: 64353
Diffstat (limited to 'llvm/lib/Bitcode/Reader/BitcodeReader.cpp')
0 files changed, 0 insertions, 0 deletions
