[llvm] [X86][BF16] Support INSERT_SUBVECTOR and CONCAT_VECTORS (PR #76485)

[Phoebe Wang via llvm-commits]

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@@ -7931,6 +7927,14 @@ let Predicates = [HasAVX2, NoVLX] in {
   defm : vextract_lowering<"VEXTRACTI128", v32i8,  v16i8>;
 }
 
+let Predicates = [HasAVXNECONVERT, NoVLX] in {
+  def : Pat<(v16bf16 (X86SubVBroadcastld128 addr:$src)),
+            (VBROADCASTF128rm addr:$src)>;
+  defm : vinsert_lowering<"VINSERTI128", "VPERM2I128", v8bf16,
+                          v16bf16, loadv8bf16,  loadv16bf16>;
+  defm : vextract_lowering<"VEXTRACTI128", v16bf16, v8bf16>;
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phoebewang wrote:

Done.

https://github.com/llvm/llvm-project/pull/76485