Merging r228760 and r228761:

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r228760 | majnemer | 2015-02-10 15:09:43 -0800 (Tue, 10 Feb 2015) | 3 lines

EarlyCSE: It isn't safe to CSE across synchronization boundaries

This fixes PR22514.
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r228761 | majnemer | 2015-02-10 15:11:02 -0800 (Tue, 10 Feb 2015) | 1 line

EarlyCSE: Add check lines for test added in r228760
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_36@228790 91177308-0d34-0410-b5e6-96231b3b80d8