Merge r311013 into the 5.0 branch: Fix for #28581 : OpenMP linear clause - wrong results.

[hahnjo]

Bugzilla Link	35177
Resolution	FIXED
Resolved on	Nov 13, 2017 15:12
Version	unspecified
OS	All
Blocks	#33840
CC	@alexey-bataev,@hfinkel,@tstellar
Fixed by commit(s)	r311013 r318105

Extended Description

If worksharing construct has at least one linear item, an implicit
synchronization point must be emitted to avoid possible conflict with
the loading/storing values to the original variables. Added implicit
barrier if the linear item is found before actual start of the
worksharing construct.

[hahnjo]

assigned to @alexey-bataev

[tstellar]

Hi Alexey,

Is this OK to merge to the release_50 branch: https://reviews.llvm.org/rL311013

[alexey-bataev]

Yes

[tstellar]

Merged: r318105