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Author SHA1 Message Date
Duncan P. N. Exon Smith 38402dc917 PGO: Scale large counters down to 32-bits 
PGO counters are 64-bit and branch weights are 32-bit.  Scale them down
when necessary, instead of just taking the lower 32 bits.

<rdar://problem/16276448>

llvm-svn: 203592
 2014-03-11 18:18:10 +00:00