[llvm] [AMDGPU] Add target feature for SWMMAC instructions (PR #185785)

[Shilei Tian via llvm-commits]

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@@ -795,6 +795,10 @@ defm WMMA128bInsts : AMDGPUSubtargetFeature<"wmma-128b-insts",
   "Has WMMA instructions where A and B matrices do not have duplicated data"
 >;
 
+defm SWMMACInsts : AMDGPUSubtargetFeature<"swmmac-insts",
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shiltian wrote:

The single target feature seems too coarse grained to me.

https://github.com/llvm/llvm-project/pull/185785