[llvm-branch-commits] [llvm] [AMDGPU][SIMemoryLegalizer] Lower single-wave workgroup scope to wavefront in absence of LDSDMA (PR #224065)

[Krzysztof Drewniak via llvm-branch-commits]

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@@ -824,9 +831,15 @@ SIAtomicAddrSpace SIMemOpAccess::toSIAtomicAddrSpace(unsigned AS) const {
   return SIAtomicAddrSpace::OTHER;
 }
 
+// TODO: Consider moving single-wave workgroup->wavefront scope relaxation to an
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krzysz00 wrote:

Yeah, there's a world where, instead of doing this IR rewrite, we instead just don't emit the waits when we know we're in a single-wave no-DMA context. I figure it's equivalent to 
> If [we have the prerequisites], wavefront scope is a valid refinement of workgroup scope


https://github.com/llvm/llvm-project/pull/224065