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2007-07-24check in an experiment that didn't work out, to allow for future investigation.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@40460 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-24Add a cache to SourceManager to accellerate line # lookup. This is aChris Lattner
bottleneck for -E computation, because every token that starts a line needs to determine *which* line it is on (so -E mode can insert the appropriate vertical whitespace). This optimization improves this common case where it is striding through the line # table. This speeds up -E on xalancbmk by 3.2% git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@40459 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-21Add support for reusing macroid's with negative physical loc deltas. ThisChris Lattner
keeps the MacroInfo table more compact. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@40281 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-20remove some old cruftChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@40111 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-20improve comments, implement a trivial single-entry cache in Chris Lattner
SourceManager::getInstantiationLoc. With this change, every token expanded from a macro doesn't get its own MacroID. :) This reduces # macro IDs in carbon.h from 16805 to 9197 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@40108 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-20Reimplement SourceLocation. Instead of having a Chris Lattner
fileid/offset pair, it now contains a bit discriminating between mapped locations and file locations. This separates the tables for macros and files in SourceManager, and allows better separation of concepts in the rest of the compiler. This allows us to have *many* macro instantiations before running out of 'addressing space'. This is also more efficient, because testing whether something is a macro expansion is now a bit test instead of a table lookup (which also used to require having a srcmgr around, now it doesn't). This is fully functional, but there are several refinements and optimizations left. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@40103 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-16Make octal constant lexing use AdvanceToTokenCharacter to give moreChris Lattner
accurate diagnostics. For test/Lexer/comments.c we now emit: int x = 000000080; /* expected-error {{invalid digit}} */ ^ constants.c:7:4: error: invalid digit '8' in octal constant 00080; /* expected-error {{invalid digit}} */ ^ The last line is due to an escaped newline. The full line looks like: int y = 0000\ 00080; /* expected-error {{invalid digit}} */ Previously, we emitted: constants.c:4:9: error: invalid digit '8' in octal constant int x = 000000080; /* expected-error {{invalid digit}} */ ^ constants.c:6:9: error: invalid digit '8' in octal constant int y = 0000\ ^ which isn't too bad, but the new way is better for the user, regardless of whether there is an escaped newline or not. All the other lexer-related diagnostics should switch over to using AdvanceToTokenCharacter where appropriate. Help wanted :). This implements test/Lexer/constants.c. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@39906 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-15Change SourceManager::getInstantiationLoc to take virtual locations, doing itsChris Lattner
virtual->physical mapping explicitly. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@39867 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-12add missing headerGabor Greif
(needed on Solaris) git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@39781 91177308-0d34-0410-b5e6-96231b3b80d8
2007-07-11Stage two of getting CFE top correct.Reid Spencer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@39734 91177308-0d34-0410-b5e6-96231b3b80d8