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hdl._ast: make Shape immutable and hashable.

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Fixes #1127.
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Wanda 2024-02-16 15:27:27 +01:00 • committed by Catherine
parent 24a392887a
commit 6058ad35cf
3 changed files with 24 additions and 2 deletions
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docs/changes.rst
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@ -63,6 +63,7 @@ Language changes
* Changed: ``Signal(range(0))`` is now valid without a warning.
* Changed: ``Shape.cast(range(1))`` is now ``unsigned(0)``. (`RFC 46`_)
* Changed: the ``reset=`` argument of :class:`Signal`, :meth:`Signal.like`, :class:`amaranth.lib.wiring.Member`, :class:`amaranth.lib.cdc.FFSynchronizer`, and ``m.FSM()`` has been renamed to ``init=``. (`RFC 43`_)
* Changed: :class:`Shape` has been made immutable and hashable.
* Deprecated: :func:`amaranth.utils.log2_int`. (`RFC 17`_)
* Removed: (deprecated in 0.4) :meth:`Const.normalize`. (`RFC 5`_)
* Removed: (deprecated in 0.4) :class:`Repl`. (`RFC 10`_)