[clang] [Clang][CodeGen] Add __builtin_bcopy (PR #67130)

[Jon Roelofs via cfe-commits]

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@@ -3703,6 +3703,20 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
     Builder.CreateMemSet(Dest, Builder.getInt8(0), SizeVal, false);
     return RValue::get(nullptr);
   }
+
+  case Builtin::BIbcopy:
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jroelofs wrote:

Is this the same as the body of `case Builtin::BImemmove:`?

https://github.com/llvm/llvm-project/pull/67130