[PATCH] Store first and last newline position in the token text for string literals and comments.

[Daniel Jasper]

================
Comment at: lib/Format/ContinuationIndenter.cpp:596
@@ -599,2 +595,3 @@
 
+  StringRef FirstLine = Current.TokenText.substr(0, Current.FirstNewlineInText);
   unsigned ColumnsUsed =
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We never use FirstNewlineInText or LastNewlineInText for anything other than getting the substring and then calculating the CodePointCount. Getting the CodePointCount again is a linear operation that we do repeatedly while finding the best layout. How about precomputing the CodePointCount for both values instead.


http://llvm-reviews.chandlerc.com/D1556