4 Commits

Author	SHA1	Message	Date
Justin Bogner	a463537a36	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	e87e1c6cdd	[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	2016-03-22 22:08:01 +00:00
Justin Lebar	1fdb5e6942	[NVPTX] Mark nvvm synchronizing intrinsics as convergent. ... Summary: This is the attribute purpose-made for e.g. __syncthreads. It appears that NoDuplicate may not be sufficient to prevent Sink from touching a call to __syncthreads. Reviewers: jingyue, hfinkel Subscribers: llvm-commits, jholewinski, jhen, rnk, tra, majnemer Differential Revision: http://reviews.llvm.org/D16941 llvm-svn: 260005	2016-02-06 19:32:44 +00:00
Eli Bendersky	2281ef91e6	Expose "noduplicate" attribute as a property for intrinsics. ... The "noduplicate" function attribute exists to prevent certain optimizations from duplicating calls to the function. This is important on platforms where certain function call duplications are unsafe (for example execution barriers for CUDA and OpenCL). This patch makes it possible to specify intrinsics as "noduplicate" and translates that to the appropriate function attribute. llvm-svn: 204200	2014-03-18 23:51:07 +00:00