PTH: Use Token::setLiteralData() to directly store a pointer to cached spelling data in the PTH file. This removes a ton of code for looking up spellings using sourcelocations in the PTH file. This simplifies both PTH-generation and reading.

Performance impact for -fsyntax-only on Cocoa.h (with Cocoa.h in the PTH file):
- PTH generation time improves by 5%
- PTH reading improves by 0.3%.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63072 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 6 deletions

diff --git a/include/clang/Lex/Preprocessor.h b/include/clang/Lex/Preprocessor.h
index 095c1db1de..4e57069385 100644
--- a/include/clang/Lex/Preprocessor.h
+++ b/include/clang/Lex/Preprocessor.h
@@ -461,12 +461,6 @@ public:
     // If the token is carrying a literal data pointer, just use it.
     if (const char *D = Tok.getLiteralData())
       return *D;
-    
-    if (PTH) {
-      const char *Data;
-      if (PTH->getSpelling(Tok.getLocation(), Data))
-        return *Data;
-    }
 
     // Otherwise, fall back on getCharacterData, which is slower, but always
     // works.