tra marked an inline comment as done.
tra added inline comments.

================
Comment at: clang/test/CodeGen/builtins-nvptx-mma.py:84
+          # It uses __mma_tf32_m16n16k8_ld_c but __mma_m16n16k8_st_c_f32.
+          make_ldst_ops(["m16n16k8"], ["a", "b", "c", "d"], ["tf32", "f32"]))
 
----------------
steffenlarsen wrote:
> tra wrote:
> > steffenlarsen wrote:
> > > The following changes would remove the need for the `m16n16k8` cases in 
> > > `is_ldst_variant_supported`.
> > This was done deliberately. I did have that in an earlier variant of the 
> > patch, but eventually settled on the current version.
> > 
> > My thinking is that `make_ldst_ops(m16n16k8)` would create whatever is 
> > necessary for `m16n16k8`, and we'd keep the decision of what to produce in 
> > one place in `is_ldst_variant_supported`. Splitting one make_ldst_ops into 
> > two here makes this decision implicit which would need additional 
> > explanations. Code that needs less explanations  wins. :-)
> > 
> My concern is that it is more confusing this way because they are the only 
> load/store ops generated where the type is then later filtered. It makes 
> sense for MMA because it needs to filter out select combinations, but here 
> the comment above says one thing and `make_ldst_ops` does something else.
> 
> I don't think it makes a huge difference either way, so if you prefer the 
> current version I am okay with keeping it. That said, it might be good to 
> have a comment in the `m16n16k8` case of `is_ldst_variant_supported` making 
> the connection to this.
Fair enough. I've adopted your suggestion. Builtins don't have as much magic as 
intrinsics, so your approach is indeed simpler.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D105384/new/

https://reviews.llvm.org/D105384

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