Reapply "blockfreq: Rewrite BlockFrequencyInfoImpl"

Description

Reapply "blockfreq: Rewrite BlockFrequencyInfoImpl"

This reverts commit r206707, reapplying r206704. The preceding commit
to CalcSpillWeights should have sorted out the failing buildbots.

rdar://problem/14292693

Details

Committed
dexonsmithApr 21 2014, 10:57 AM
Parents
rL206765: CalcSpillWeights: Hack to prevent x87 nonsense
Branches
Unknown
Tags
Unknown