[PATCH] D151153: [AMDGPU] Add attribute to AMDGPU ctor / dtor to indicate single threadedness

[Joseph Huber via Phabricator via llvm-commits]

jhuber6 added inline comments.


================
Comment at: llvm/lib/Target/AMDGPU/AMDGPUCtorDtorLowering.cpp:41
   InitOrFiniKernel->setCallingConv(CallingConv::AMDGPU_KERNEL);
+  InitOrFiniKernel->addFnAttr("amdgpu-flat-work-group-size", "1,1");
   if (IsCtor)
----------------
arsenm wrote:
> We should probably teach UniformityAnalysis about this special case for the work item IDs 
This special case where the number of threads is one? It would definitely simplify anything to do with convergence.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D151153/new/

https://reviews.llvm.org/D151153