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* Define leading '_' as API for creating temporaries
Chisel and FIRRTL have long used signals with names beginning with an
underscore as an API to specify that the name does not really matter.
Tools like Verilator follow a similar convention and exclude signals
with underscore names from waveform dumps by default. With the
introduction of compiler-plugin prefixing in Chisel 3.4, the convention
remained but was hard for users to use unless the unnnamed signal
existed outside of any prefix domain. Notably, unnamed signals are most
useful when creating wires inside of utility methods which almost always
results in the signal ending up with a prefix.
With this commit, Chisel explicitly recognizes signals whos val names
start with an underscore and preserve that underscore regardless of any
prefixing. Chisel will also ignore such underscores when generating
prefixes based on the temporary signal, preventing accidental double
underscores in the names of signals that are prefixed by the temporary.
(cherry picked from commit bd94366290886f3489d58f88b9768c7c11fa2cb6)
* Remove unused defaultPrefix argument from _computeName
(cherry picked from commit ec178aa20a830df2c8c756b9e569709a59073554)
# Conflicts:
# core/src/main/scala/chisel3/Module.scala
# core/src/main/scala/chisel3/experimental/hierarchy/ModuleClone.scala
* Resolve backport conflicts
* Waive false positive binary compatibility errors
Co-authored-by: Jack Koenig <koenig@sifive.com>
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* Update bundles-and-vecs.md
* Update docs/src/explanations/bundles-and-vecs.md
Co-authored-by: Megan Wachs <megan@sifive.com>
* Update naming.md
Added a title to the cookbook
* Add name to Multiple Clock Domain page
* Update multi-clock.md
Co-authored-by: Megan Wachs <megan@sifive.com>
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* Refine autonaming to have more intuitive behavior
Last name in an Expression wins, while the first Statement to name wins.
This is done via checking the _id of HasIds during autonaming and only
applying a name if the HasId was created in the scope of autonaming.
There is no change to .autoSeed or .suggestName behavior.
Behavior of chisel3-plugins from before this change is maintained.
* Update docs with naming plugin changes
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* Fix crosslinks in mdoc. Can't use md suffix
* Removed all .md crossrefs
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
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* Fix broken mdoc
* Added test-chisel-docs to ci workflow
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* Added documentation. Bugfix in plugin. Moved plugin APIs to separate package
* Revert reg naming behavior (omit underscore)
* Added documentation and a test
* Addressed reviewer feedback.
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