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[NVVM] Remove noduplicate attribute from synchronizing intrinsics.

Authored by jlebar on Mar 22 2016, 3:08 PM.

Description

[NVVM] Remove noduplicate attribute from synchronizing intrinsics.

Summary:
I've completed my audit of all the code that looks at noduplicate and
added handling of convergent where appropriate, so we no longer need
noduplicate on these intrinsics.

Reviewers: jholewinski

Subscribers: llvm-commits, jholewinski

Differential Revision: http://reviews.llvm.org/D18168

llvm-svn: 264107

Details