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2 Commits

Author SHA1 Message Date
Justin Bogner
18054ad909 NVPTX: Replace uses of cuda.syncthreads with nvvm.barrier0 
Everywhere where cuda.syncthreads or __syncthreads is used, use the
properly namespaced nvvm.barrier0 instead.

llvm-svn: 274664
 2016-07-06 20:02:45 +00:00
Justin Lebar
ab72baa618 [NVPTX] Test that MachineSink won't sink across llvm.cuda.syncthreads. 
Summary:
The syncthreads MI is modeled as mayread/maywrite -- convergence doesn't
even come into play here.  Nonetheless this property is highly implicit
in the tablegen files, so a test seems appropriate.

Reviewers: jingyue

Subscribers: llvm-commits, jholewinski

Differential Revision: http://reviews.llvm.org/D17319

llvm-svn: 261114
 2016-02-17 17:46:52 +00:00