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Improve performance of bit operations by vectorizing #1542
Feature tracking bug.
Verilator at present only vectorizes some very simple assignments of the form
into e.g. a[3:2] = foo[3:2]. The V3Gate/V3Const process should be improved to vectorize general equations. There is probably some literature on this as is similar to normal code vectorization.
For some designs written at a low level expect a 5-30% performance improvement.