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53 Commits

Author SHA1 Message Date
Justin Bogner 06bd6d04e0 CodeGen: Introduce CodeGenPGO::setCurrentRegionUnreachable 
There are a number of places where we do PGO.setCurrentRegionCount(0)
directly after an unconditional branch. Give this operation a name so
that it's clearer why we're doing this.

llvm-svn: 199138
 2014-01-13 21:24:18 +00:00
Chandler Carruth acafded69c Fix a -Wparentheses warning from GCC that caught a badly formed assert. 
I have no idea why Clang's warning doesn't fire here, looks like a Clang
bug. I'll investigate that separately.

llvm-svn: 198677
 2014-01-07 06:52:12 +00:00
Justin Bogner ef512b9929 CodeGen: Initial instrumentation based PGO implementation 
llvm-svn: 198640
 2014-01-06 22:27:43 +00:00