AMDGPU: Do not generate non-temporal hint when Load_Tr intrinsic did not specify it (#79104) int_amdgcn_global_load_tr did not specify non-temporal load transpose, thus we should not genetrate the non-temporal hint for the load. We need to implement getTgtMemIntrinsic to create the corresponding MemSDNode. And we don't set the non-temporal flag because the intrinsic did not specify it. NOTE: We need to implement getTgtMemIntrinsic for any memory intrinsics.
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