Why do my manually-instantiated LCELL components get removed during compilation when Rapid Recompile is turned on?

Description

Due to a problem with the Rapid Recompile feature in the Quartus® II software versions 11.0 SP1 and earlier, manually-instantiated LCELL components may be removed during synthesis optimizations and replaced with a wire.

To avoid this problem, turn off the Rapid Recompile feature.

This problem is scheduled to be fixed in a future version of the Quartus II software.

Resolution

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