b178fdf486
When writing the scheduler, we forgot that you can't read the complex unit in certain sources because it gets overwritten to 0 or 1. Fixing this turned out to be possible without giving up and reducing GPIR_VALUE_REG_NUM to 10, although it was difficult in a way I didn't expect. There can be at most 4 next-max nodes that can't have moves scheduled in the complex slot, so it actually isn't a problem for getting the number of next-max nodes at 5 or lower. However, it is a problem for stores. If a given node is a next-max node whose move cannot go in the complex slot *and* is used by a store that we decide to schedule, we have to reserve one of the non-complex slots for a move instead of all the slots, or we can wind up in a situation where only the complex slot is free and we fail the move. This means that we have to add another term to the reservation logic, for stores whose children cannot be in the complex slot. Acked-by: Qiang Yu <yuq825@gmail.com>
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