[polly] Isl ast gen compute out (PR #201859)

[Shikhar Jain via llvm-commits]

================
@@ -315,7 +325,12 @@ astBuildAfterMark(__isl_take isl_ast_node *Node,
   assert(isl_ast_node_get_type(Node) == isl_ast_node_mark);
   AstBuildUserInfo *BuildInfo = (AstBuildUserInfo *)User;
   auto *Id = isl_ast_node_mark_get_id(Node);
-  if (strcmp(isl_id_get_name(Id), "SIMD") == 0)
+
+  // since Node being null is not checked
+  // thus name returned could be null or in bad state
+  // this saves the potential err thrown by strcmp
----------------
ShikharJ-Corp wrote:

Ok. I have now just checked Id being null and removed the redundant comment

https://github.com/llvm/llvm-project/pull/201859