================
@@ -14836,6 +14837,9 @@ Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned 
BuiltinID,
   case X86::BI__builtin_ia32_vfmaddph512_mask:
   case X86::BI__builtin_ia32_vfmaddph512_maskz:
   case X86::BI__builtin_ia32_vfmaddph512_mask3:
+  case X86::BI__builtin_ia32_vfmaddnepbh128:
+  case X86::BI__builtin_ia32_vfmaddnepbh256:
+  case X86::BI__builtin_ia32_vfmaddnepbh512:
----------------
FreddyLeaf wrote:

this implementation didn't define them as bf16 fma instructions don't have 
rounding control, safe to implement by select.

https://github.com/llvm/llvm-project/pull/101603
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