[llvm] X86: implement lowerings for shuffles on `bf16` element type. (PR #76076)

[Phoebe Wang via llvm-commits]

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@@ -16480,6 +16499,9 @@ static SDValue lower256BitShuffle(const SDLoc &DL, ArrayRef<int> Mask, MVT VT,
     return lowerV4I64Shuffle(DL, Mask, Zeroable, V1, V2, Subtarget, DAG);
   case MVT::v8f32:
     return lowerV8F32Shuffle(DL, Mask, Zeroable, V1, V2, Subtarget, DAG);
+  case MVT::v8f16:
+  case MVT::v8bf16:
+    return lowerV16F16Shuffle(DL, Mask, Zeroable, V1, V2, Subtarget, DAG);
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phoebewang wrote:

This has covered by line 16488~16493

https://github.com/llvm/llvm-project/pull/76076