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2009-01-19Make SourceLocation::getFileLoc private to reduce the API exposure of Chris Lattner
SourceLocation. This requires making some cleanups to token pasting and _Pragma expansion. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62490 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-18fix rdar://6505352 - Bogus warning with -WUndef, a caseChris Lattner
Anders noticed. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62472 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-18rearrange GetIdentifierInfo so that the fast path can be partially inlined ↵Chris Lattner
into PTHLexer::Lex. This speeds up the user time of PTH -Eonly by another 2ms (4.4%) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62454 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-18rename some variables, only set a tokens identifierinfo if non-null.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62450 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-18On i386 and x86-64, just do unaligned loads Chris Lattner
instead of assembling from bytes. This speeds up -Eonly PTH reading of cocoa.h by about 2ms, which is 4.2%. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62447 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-18switch PTHLexer to use Read32 and friends instead of lots of inlinedChris Lattner
copies. I verified that this causes no performance change in PTH. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62445 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-18switch PTH lexer from using "const char*"s to "const unsigned char*"s Chris Lattner
internally. This is just a cleanup that reduces the need to cast to unsigned char before assembling a larger integer. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62442 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-17Rename SourceLocation::getFileID to getChunkID, because it returnsChris Lattner
the chunk ID not the file ID. This exposes problems in TextDiagnosticPrinter where it should have been using the canonical file ID but wasn't. Fix these along the way. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62427 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-17simplify some lookups.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62426 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-17Change the Lexer ctor used to lex _Pragma directives into a static factoryChris Lattner
method. This lets us clean up the interface and make it more obvious that this method is *really really* _Pragma specific. Note that _Pragma handling uglifies the Lexer in the critical path. It would be very interesting to consider making _Pragma remapping be a new special lexer class of its own. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62425 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-17simplify PTHManager::CreateLexerChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62424 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-17Change the Lexer ctor used in the non _Pragma case to take a FileID insteadChris Lattner
of a SourceLocation. This should speed it up and definitely simplifies it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62422 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-17in Preprocessor::AdvanceToTokenCharacter, don't actually botherChris Lattner
creating a whole lexer when we just want one static method. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62420 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-17More simplifications to the lexer ctors.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62419 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-17make the verbose raw-lexer ctor fully explicit instead of havingChris Lattner
embedded magic. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62417 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-17add a simplified lexer ctor that sets up the lexer to raw-lex anChris Lattner
entire file. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62414 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-17refactor some common initialization code out of the two lexer ctors.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62411 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-17suck the call to "getSpellingLoc" that all clients do intoChris Lattner
the implementation of PTHManager::getSpelling. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62408 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-17this massive patch introduces a simple new abstraction: it makesChris Lattner
"FileID" a concept that is now enforced by the compiler's type checker instead of yet-another-random-unsigned floating around. This is an important distinction from the "FileID" currently tracked by SourceLocation. *That* FileID may refer to the start of a file or to a chunk within it. The new FileID *only* refers to the file (and its #include stack and eventually #line data), it cannot refer to a chunk. FileID is a completely opaque datatype to all clients, only SourceManager is allowed to poke and prod it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62407 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-17Instead of iterating over FileID's, have PTH generation iterate over theChris Lattner
content cache directly. Content cache has a 1-1 mapping with fileentries, whereas multiple FileIDs can be the same FileEntry. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62401 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-16Fix PR2477 - clang misparses "//*" in C89 modeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62368 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-16As a performance optimization, don't bother calling MacroInfo::isIdenticalTo Chris Lattner
if warnings in system headers are disabled. isIdenticalTo can end up calling the expensive getSpelling method, and other bad stuff and is completely unneeded if the warning will be discarded anyway. rdar://6502956 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62347 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-16only notify callbacks if they exist.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62334 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-16Improve #pragma comment support by building the string argument andChris Lattner
notifying PPCallbacks about it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62333 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-16minor cleanups to StringLiteralParser: no need to pass target infoChris Lattner
into its ctor. Also, make it handle validity checking of pascal strings instead of making clients do it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62332 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-16Implement basic support for parsing #pragma comment, a microsoft extensionChris Lattner
documented here: http://msdn.microsoft.com/en-us/library/7f0aews7(VS.80).aspx This is according to my understanding reading the docs, I don't know if it really agrees fully with what VC++ allows. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62317 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-16more SourceLocation lexicon change: instead of referring to theChris Lattner
"logical" location, refer to the "instantiation" location. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62316 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-16remove obsolete comment which happened to go over 80 cols.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62313 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-16remove an unneeded const_cast.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62311 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-16Change some terminology in SourceLocation: instead of referring to Chris Lattner
the "physical" location of tokens, refer to the "spelling" location. This is more concrete and useful, tokens aren't really physical objects! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62309 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-15PTH: Fix termination condition in binary search.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62277 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-15IdentifierInfo:Ted Kremenek
- IdentifierInfo can now (optionally) have its string data not be co-located with itself. This is for use with PTH. This aspect is a little gross, as getName() and getLength() now make assumptions about a possible alternate representation of IdentifierInfo. Perhaps we should make IdentifierInfo have virtual methods? IdentifierTable: - Added class "IdentifierInfoLookup" that can be used by IdentifierTable to perform "string -> IdentifierInfo" lookups using an auxilliary data structure. This is used by PTH. - Perform tests show that IdentifierTable::get() does not slow down because of the extra check for the IdentiferInfoLookup object (the regular StringMap lookup does enough work to mitigate the impact of an extra null pointer check). - The upshot is that now that some IdentifierInfo objects might be owned by the IdentiferInfoLookup object. This should be reviewed. PTH: - Modified PTHManager::GetIdentifierInfo to *not* insert entries in IdentifierTable's string map, and instead create IdentifierInfo objects on the fly when mapping from persistent IDs to IdentifierInfos. This saves a ton of work with string copies, hashing, and StringMap lookup and resizing. This change was motivated because when processing source files in the PTH cache we don't need to do any string -> IdentifierInfo lookups. - PTHManager now subclasses IdentifierInfoLookup, allowing clients of IdentifierTable to transparently use IdentifierInfo objects managed by the PTH file. PTHManager resolves "string -> IdentifierInfo" queries by doing a binary search over a sorted table of identifier strings in the PTH file (the exact algorithm we use can be changed as needed). These changes lead to the following performance changes when using PTH on Cocoa.h: - fsyntax-only: 10% performance improvement - Eonly: 30% performance improvement git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62273 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-15PTH: Embed a persistentID side-table in the PTH file that is sorted in theTed Kremenek
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
2009-01-13PTH:Ted Kremenek
- Use canonical FileID when using getSpelling() caching. This addresses some cache misses we were seeing with -fsyntax-only on Cocoa.h - Added Preprocessor::getPhysicalCharacterAt() utility method for clients to grab the first character at a specified sourcelocation. This uses the PTH spelling cache. - Modified Sema::ActOnNumericConstant() to use Preprocessor::getPhysicalCharacterAt() instead of SourceManager::getCharacterData() (to get PTH hits). These changes cause -fsyntax-only to not page in any sources from Cocoa.h. We see a speedup of 27%. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62193 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-13Fix corner cases in PTH getSpelling() binary search.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62187 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-13PTH: Fix remaining cases where the spelling cache in the PTH file was being ↵Ted Kremenek
missed when it shouldn't. This shaves another 7% off PTH time for -Eonly on Cocoa.h git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62186 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-09Enhance PTH 'getSpelling' caching:Ted Kremenek
- Refactor caching logic into a helper class PTHSpellingSearch - Allow "random accesses" in the spelling cache, thus catching the remaining cases where 'getSpelling' wasn't hitting the PTH cache For -Eonly, PTH, Cocoa.h: - This reduces wall time by 3% (user time unchanged, sys time reduced) - This reduces the amount of paged source by 1112K. The remaining 1112K still being paged in is from somewhere else (investigating). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62009 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-09Invert assertion condition.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61961 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-08PTH: Hook up getSpelling() caching in PTHLexer. This results in a niceTed Kremenek
performance gain. Here's what we see for -Eonly on Cocoa.h (using PTH): - wall time decreases by 21% (26% speedup overall) - system time decreases by 35% - user time decreases by 6% These reductions are due to not paging source files just to get spellings for literals. The solution in place doesn't appear to be 100% yet, as we still see some of the pages for source files getting mapped in. Using -print-stats, we see that SourceManager maps in 7179K less bytes of source text (reduction of 75%). Will investigate why the remaining 25% are getting paged in. With these changes, here's how PTH compares to non-PTH on Cocoa.h: -Eonly: PTH takes 64% of the time as non-PTH (54% speedup) -fsyntax-only: PTH takes 89% of the time as non-PTH (11% speedup) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61913 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-08PTH:Ted Kremenek
- Added stub PTHLexer::getSpelling() that will be used for fetching cached spellings from the PTH file. This doesn't do anything yet. - Added a hook in Preprocessor::getSpelling() to call PTHLexer::getSpelling() when using a PTHLexer. - Updated PTHLexer to read the offsets of spelling tables in the PTH file. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61911 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-05Optimize stringification a bit to avoid std::string thrashing andChris Lattner
avoid the version of Preprocessor::getSpelling that returns an std::string. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61769 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-05simplify Preprocessor::getSpelling now that identifiers carry aroundChris Lattner
their length. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61734 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-25Add parser support for __forceinline, __w64, __ptr64.Steve Naroff
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61431 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-25Add parser support for __cdecl, __stdcall, and __fastcall.Steve Naroff
Change preprocessor implementation of _cdecl to reference __cdecl. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61430 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-24Add explicit "fuzzy" parse support for Microsoft declspec.Steve Naroff
Remove previous __declspec macro that would effectively erase the construct prior to parsing. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61422 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-23Remove old PTH token-generation test harness.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61382 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-23PTH: Remove some methods and simplify some conditions in PTHLexer::Lex(). ↵Ted Kremenek
No big functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61381 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-23PTH: Use 3 bytes instead of 4 bytes to encode the persistent ID for a token.Ted Kremenek
- 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
2008-12-23Cosmetics: rename a variable and tighten spacing. No functionality change.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61375 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-23PTH:Ted Kremenek
- 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
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