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(parent: f47649f) | patch
blockfreq: Scale LoopData::Scale on the way down
authorDuncan P. N. Exon Smith <dexonsmith@apple.com>
Fri, 25 Apr 2014 04:38:27 +0000 (04:38 +0000)
committerDuncan P. N. Exon Smith <dexonsmith@apple.com>
Fri, 25 Apr 2014 04:38:27 +0000 (04:38 +0000)
commit58aa6072058b4dd086c503362c3fa467568c4cfe
tree0c0c4a9cc8991f2c35b9f3198cbf76484068f8d7tree | snapshot
parentf47649f7f96bbbf3b79b428b885114777a8175aacommit | diff
blockfreq: Scale LoopData::Scale on the way down

Rather than scaling loop headers and then scaling all the loop members
by the header frequency, scale `LoopData::Scale` itself, and scale the
loop members by it.  It's much more obvious what's going on this way,
and doesn't cost any extra multiplies.

<rdar://problem/14292693>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207189 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Analysis/BlockFrequencyInfoImpl.cpp diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors