Author: lattner
Date: Sat Jan 17 02:30:10 2009
New Revision: 62426
URL: http://llvm.org/viewvc/llvm-project?rev=62426&view=rev
Log:
simplify some lookups.
Modified:
cfe/trunk/lib/Lex/Lexer.cpp
Modified: cfe/trunk/lib/Lex/Lexer.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Lex/Lexer.cpp?rev=62426&r1=62425&r2=62426&view=diff
==============================================================================
--- cfe/trunk/lib/Lex/Lexer.cpp (original)
+++ cfe/trunk/lib/Lex/Lexer.cpp Sat Jan 17 02:30:10 2009
@@ -216,15 +216,15 @@
// the token this macro expanded to.
Loc = SM.getInstantiationLoc(Loc);
- const char *StrData = SM.getCharacterData(Loc);
-
// TODO: this could be special cased for common tokens like identifiers, ')',
// etc to make this faster, if it mattered. Just look at StrData[0] to
handle
// all obviously single-char tokens. This could use
// Lexer::isObviouslySimpleCharacter for example to handle identifiers or
// something.
- std::pair<const char *,const char *> Buffer = SM.getBufferData(Loc);
-
+ std::pair<FileID, unsigned> LocInfo = SM.getDecomposedFileLoc(Loc);
+ std::pair<const char *,const char *> Buffer =
SM.getBufferData(LocInfo.first);
+ const char *StrData = Buffer.first+LocInfo.second;
+
// Create a langops struct and enable trigraphs. This is sufficient for
// measuring tokens.
LangOptions LangOpts;
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