[PATCH] D130728: [SCEV] Iteratively compute ranges for deeply nested expressions.

[Philip Reames via Phabricator via llvm-commits]

reames added a comment.

Switching everything in SCEV to use iterative algorithms to avoid stack recursion depth issues seems like the better long term approach to me.  I really dislike the notion of one more limit here.

The other option is we could use the musttail attributes to explicitly write recursion based code without the stack depth problems, but I think that's currently a clang only extension.  Not sure if GCC supports it, or where it stands in certification efforts.


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https://reviews.llvm.org/D130728