This PR aligns the pattern application logic with the operation deletion
strategy, It indirectly achieves the separation of operation deletion
and pattern application. It also fixes a bug where trivially dead ops
within `opsInRange` was being incorrectly deleted when apply patterns.
While `opsNotInRange` grows from zero (via binary search), `opsInRange
`shrinks from the entire module down to zero. This fixes a crash where
patterns were initially applied to the whole module. If the module in
the current iteration is 'uninteresting', it gets erased. Consequently,
when the iterator increments, it fails to clone the parent iteration's
module, leading to a crash.
lonely eagle
8fdf195d1a