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貌似有这个技术:
Propagating Constraints up the Hierarchy
If you have hierarchical designs and compile the subdesigns, then move up to the higher-
level blocks (bottom-up compilation), you can propagate clocks, timing exceptions,
and disabled timing arcs from lower-level .ddc files to the current design, using the
propagate_constraints command. If you do not use this command, you can propagate
constraints from a higher-level design to the current_instance, but you cannot
propagate constraints set on a lower-level block to the higher-level blocks in which it is
instantiated
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