* Move define_acc down an unrolled add chain
* Prevent possible infinite recursion
* Add test
* Fix typo in test
* Move mulacc_unrolled to devoctorize + load_store_indexing pass
* Add test for mulacc_unrolled by itself
* undo formatter
* import from ops, not rewriter
* Add a const version
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Co-authored-by: chenyu <chenyu@fastmail.com>