[PATCH] D107639: [AMDGPU][GISel] Smaller code for scalar 32 to 64-bit extensions
Matt Arsenault via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Fri Aug 6 08:27:45 PDT 2021
arsenm added a comment.
In D107639#2931000 <https://reviews.llvm.org/D107639#2931000>, @foad wrote:
> In D107639#2930963 <https://reviews.llvm.org/D107639#2930963>, @arsenm wrote:
>
>> I thought these got up split before selection
>
> There is code in AMDGPURegisterBankInfo::applyMappingImpl to do that for VALU, but not for SALU. Would it be better to do it there for SALU too?
Maybe this should just be a post-regbankselect combine. We don't want to have any other combines that need to create extensions to worry about this too
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https://reviews.llvm.org/D107639/new/
https://reviews.llvm.org/D107639
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