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llvm-project/llvm/test/Feature/intrinsic-noduplicate.ll

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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
2014-03-19 07:51:07 +08:00
; RUN: llvm-as < %s | llvm-dis | FileCheck %s
[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
2016-02-07 03:32:44 +08:00
; Make sure LLVM knows about the convergent and noduplicate attributes on the
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
2014-03-19 07:51:07 +08:00
; llvm.cuda.syncthreads intrinsic.
declare void @llvm.cuda.syncthreads()
; CHECK: declare void @llvm.cuda.syncthreads() #[[ATTRNUM:[0-9]+]]
[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
2016-02-07 03:32:44 +08:00
; CHECK: attributes #[[ATTRNUM]] = { convergent noduplicate nounwind }