Chris Lattner 8996ffffe5 Add a cache to SourceManager to accellerate line # lookup. This is a ... 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% llvm-svn: 40459		2007-07-24 05:57:19 +00:00
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project.pbxproj	Add a cache to SourceManager to accellerate line # lookup. This is a	2007-07-24 05:57:19 +00:00