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path: root/lib/Basic/FileManager.cpp
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2009-12-18Removing trailing directory separator, to make stat workJohn Thompson
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91684 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-11FileManager: Do not cache failed stats, it is easy to construct commonDaniel Dunbar
inconsistent situations if we do, and they are not important for PCH performance (which currently only needs the stats to construct the initial FileManager entries). - No test case, sorry, the machinations are too involved. This occurs when, for example, the build makes a PCH file and has a header map or a -I for a directory that does not yet exist. It is possible we will cache the negative stat on that directory, and then in the build we will never find header files inside that dir. For PCH we don't need these stats anyway for performance, so this also makes PCH files smaller w/ no loss. I hope to eventually eliminate the stat cache entirely. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91082 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-02Extend -remap-file=from;to to permit mapping from a non-existentDouglas Gregor
file. This is accomplished by introducing the notion of a "virtual" file into the file manager, which provides a FileEntry* for a named file whose size and modification time are known but which may not exist on disk. Added a cute little test that remaps both a .c file and a .h file it includes to alternative files. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90329 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-16Add support for a chain of stat caches in the FileManager, rather thanDouglas Gregor
only supporting a single stat cache. The immediate benefit of this change is that we can now generate a PCH/AST file when including another PCH file; in the future, the chain of stat caches will likely be useful with multiple levels of PCH files. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84263 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-18don't stick an uninitialized 'stat' buf into the stat cache, fill itChris Lattner
with zeros. This avoids a GCC warning (PR5000) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@82194 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-09Remove tabs, and whitespace cleanups.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81346 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-05Replace some instances of std::string with StringRefs.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@81079 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23API changes to match llvm ToT.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@79868 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23Replace cerr with errs().Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@79854 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-12improve path handling, patch by Baptiste Lepilleur!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@78824 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27Implement caching of stat() calls for precompiled headers, which isDouglas Gregor
essentially the same thing we do with pretokenized headers. stat() caching improves performance of the Cocoa-prefixed "Hello, World" by 45%. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70223 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-22Remove the serialization code that predates precompiledDouglas Gregor
headers. Future approaches to (de-)serializing ASTs will be based on the PCH infrastructure. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69828 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-12FileManager:Ted Kremenek
- set the 'StatSysCallCache' object using a setter method instead of FileManager's constructor. This allows the cache to be installed after the FileManager object is created. - Add 'file mode' to FileEntry (useful for stat caching) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64351 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-12search and replaceo? Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64348 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-12Add lightweight shim "clang::StatSysCallCache" that caches 'stat' system callsTed Kremenek
for use by FileManager. FileManager now takes a StatSysCallCache* in its constructor (which defaults to NULL). This will be used for evaluating whether or not caching 'stat' system calls in PTH is a performance win. This shim adds no observable performance impact in the case where the 'StatSysCallCache*' is null. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64345 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-28On Windows use a BumpPtrAllocator for the UniqueFileContainer's StringMap.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63162 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-28FileManager: Use a BumpPtrAllocator for the StringMaps DirEntries and ↵Ted Kremenek
FileEntries. Performance impact (clang -fsyntax-only INPUTS/Cocoa_h.m): non-PTH: 0.4% improvement PTH: 0.8% improvement git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63159 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-28Add a some comments to designate Windows-specific/Unix-specific code. No ↵Ted Kremenek
functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63157 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-15Make a major restructuring of the clang tree: introduce a top-levelChris Lattner
lib dir and move all the libraries into it. This follows the main llvm tree, and allows the libraries to be built in parallel. The top level now enforces that all the libs are built before Driver, but we don't care what order the libs are built in. This speeds up parallel builds, particularly incremental ones. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@48402 91177308-0d34-0410-b5e6-96231b3b80d8
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