Merge commit 'c91a0a28908e' from llvm.org/main into next

Author: git apple-llvm automerger

llvm/include/llvm/IR/Intrinsics.td

@@ -1733,8 +1733,7 @@ def int_ubsantrap : Intrinsic<[], [llvm_i8_ty],
 
 // Return true if ubsan check is allowed.
 def int_allow_ubsan_check : DefaultAttrsIntrinsic<[llvm_i1_ty], [llvm_i8_ty],
-    [IntrInaccessibleMemOnly, IntrWriteMem, ImmArg<ArgIndex<0>>, NoUndef<RetIndex>]>,
-    ClangBuiltin<"__builtin_allow_ubsan_check">;
+    [IntrInaccessibleMemOnly, IntrWriteMem, ImmArg<ArgIndex<0>>, NoUndef<RetIndex>]>;
 
 // Return true if runtime check is allowed.
 def int_allow_runtime_check : DefaultAttrsIntrinsic<[llvm_i1_ty], [llvm_metadata_ty],