llvm/test/Feature/intrinsic-noduplicate.ll
Justin Lebar d98b8105e7 [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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@260005 91177308-0d34-0410-b5e6-96231b3b80d8
2016-02-06 19:32:44 +00:00

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LLVM

; RUN: llvm-as < %s | llvm-dis | FileCheck %s
; Make sure LLVM knows about the convergent and noduplicate attributes on the
; llvm.cuda.syncthreads intrinsic.
declare void @llvm.cuda.syncthreads()
; CHECK: declare void @llvm.cuda.syncthreads() #[[ATTRNUM:[0-9]+]]
; CHECK: attributes #[[ATTRNUM]] = { convergent noduplicate nounwind }