[llvm] [X86] Enable bfloat type support in inline assembly constraints (PR #68469)

[Phoebe Wang via llvm-commits]

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@@ -56903,7 +56903,15 @@ X86TargetLowering::getRegForInlineAsmConstraint(const TargetRegisterInfo *TRI,
       case MVT::v8f16:
         if (!Subtarget.hasFP16())
           break;
-        [[fallthrough]];
+        if (VConstraint)
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phoebewang wrote:

Good catch. I intended to drop for FP16 because it implies VLX. But I forgot to add back for BF16 which doesn't.

https://github.com/llvm/llvm-project/pull/68469