[PATCH] D64393: [AMDGPU] Fix DPP combiner check for exec modification

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

Checking all uses is unreasonable. There needs to be some search bounds to manage compile time



================
Comment at: llvm/test/CodeGen/AMDGPU/atomic_optimizations_local_pointer.ll:203-204
+define amdgpu_kernel void @add_i32_varying_dpp() {
+  %lane = call i32 @llvm.amdgcn.workitem.id.x()
+  %old = atomicrmw add i32 addrspace(3)* @local_var32, i32 %lane acq_rel
+  ret void
----------------
Can you add some cases with multiple uses independent of the atomic optimizer?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D64393/new/

https://reviews.llvm.org/D64393