OpaqueTypes are essentially type aliases that hide the underlying type.
They are implemented in Chisel as Records of a single, unnamed element
where the wrapping Record does not exist in the emitted FIRRTL.

Co-authored-by: Jack Koenig <koenig@sifive.com>

Add --warnings-as-errors option

Co-authored-by: Jack Koenig <koenig@sifive.com>

Upstream sifive/chisel-circt.

Or: now we're cooking with MLIR.

Use the published Ubuntu 20.04 binary of CIRCT to enable chisel-circt
tests in CI.

Signed-off-by: Schuyler Eldridge <schuyler.eldridge@sifive.com>

Move the git-subtree added sifive/chisel-circt repository from "circt/"
into "src/main/scala/circt/" and "src/test/scala/circtTests/".  Update
the chisel-circt README, which now lives in the src directory, to not
indicate that this is a published dependency anymore.

Signed-off-by: Schuyler Eldridge <schuyler.eldridge@sifive.com>

git-subtree-dir: circt
git-subtree-mainline: 0b2c211b
git-subtree-split: 7dd9f0e9

Signed-off-by: Schuyler Eldridge <schuyler.eldridge@sifive.com>

- Fix handling of EmitAllModulesAnnotation
- Fix stderr handling/erroring out if firtool errors during compile

Change GitHub CI to use a tagged, published Ubuntu binary of CIRCT
instead of relying on a nightly docker image.  This is both: (1) more
stable and (2) way faster.  This also removes a barrier to upstreaming
chisel-circt with chisel3.

Signed-off-by: Schuyler Eldridge <schuyler.eldridge@sifive.com>

We no longer meet on Tuesdays, only Mondays.

Release automation tries to bump chiseltest which causes issues due to
SBT trying to resolve all dependencies (even for projects that will not
be published, like integrationTests).

Co-authored-by: Jack Koenig <koenig@sifive.com>

This is required in order to support peeks in
chiseltest.

Also remove all non-testing uses of chiselName.

Add support for the new, finer-grained aggregate preservation options
that were added to CIRCT/firtool.

Signed-off-by: Schuyler Eldridge <schuyler.eldridge@sifive.com>

* Add copy constructors for compile options
* Add tests for the copy constructors

Co-authored-by: Jiuyang Liu <liu@jiuyang.me>
(cherry picked from commit 80035d2a

)

Co-authored-by: Megan Wachs <megan@sifive.com>

* Update scala-compiler, scala-library, ... to 2.12.16
* Add 2.12.16 to compiler plugin crossbuild

Co-authored-by: Jack Koenig <jack.koenig3@gmail.com>

* Add scalafmt files from chisel3
* Enable scalafmt in SBT
* Scalafmt all the files
* Add scalafmt check to CI

Improves performance of creating TruthTables by processing entire BitPats
rather than individual bits. New TruthTable factory method enables
constructing TruthTables with semantics of OR-ing output BitPats together
rather than erroring when multiple terms have the same input BitPat.
This alternative factory method matches semantics for the output format
of Espresso.

Co-authored-by: Megan Wachs <megan@sifive.com>
Co-authored-by: Jack Koenig <koenig@sifive.com>

Co-authored-by: Jack Koenig <koenig@sifive.com>
Co-authored-by: Megan Wachs <megan@sifive.com>

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

* Use kebab case for template names

* Add the metadata necessary to pick up the templates:

* added feature request issue template
* added bug report issue template
* Remove old ISSUE_TEMPLATE.md

Co-authored-by: Megan Wachs <megan@sifive.com>

* Delete TransitName and tests
* Add naming tests for Queue and Pipe
* Remove hooks APIs only used by TransitName
* remove stray sbt from comments

Links between markdown pages should not have any file extension to ensure they work on the website.

* Deprecate TransitName
* Add @nowarn macros to usages of TransitName in the repo

Co-authored-by: Jack Koenig <koenig@sifive.com>

This makes it such that we can stop hosting ScalaDoc on the Chisel
website, instead just pointing to the latest docs on javadoc.io