PTH:
- 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
diff --git a/lib/Lex/PTHLexer.cpp b/lib/Lex/PTHLexer.cpp
index c5fc6f3..8d04736 100644
--- a/lib/Lex/PTHLexer.cpp
+++ b/lib/Lex/PTHLexer.cpp
@@ -423,7 +423,7 @@
unsigned PTHLexer::getSpelling(SourceLocation sloc, const char *&Buffer) {
SourceManager& SM = PP->getSourceManager();
sloc = SM.getPhysicalLoc(sloc);
- unsigned fid = sloc.getFileID();
+ unsigned fid = SM.getCanonicalFileID(sloc);
unsigned fpos = SM.getFullFilePos(sloc);
return (fid == FileID ) ? MySpellingSrch.getSpellingLinearSearch(fpos, Buffer)