[llvm] [AMDGPU] Limit unclaused VMEM w/a to specific targets (PR #209843)

[Shilei Tian via llvm-commits]

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@@ -2238,7 +2238,6 @@ def FeatureISAVersion12_50_Common : FeatureSet<
    FeatureRealTrue16Insts,
    FeatureVMovB64Inst,
    FeatureVMulU64Inst,
-   FeatureRequiresInitialUnclausedVmem,
 ]>;
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shiltian wrote:

Does this mean that when we use `gfx12-5-generic`, this feature is not needed?

https://github.com/llvm/llvm-project/pull/209843