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

Trait-base Dependency API Migration

Co-authored-by: Jack Koenig <koenig@sifive.com>
Co-authored-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>

This mixes in the new DependencyAPIMigration trait into all Transforms
and Passes. This enables in-tree transforms/passes to build without
deprecation warnings associated with the deprecated CircuitForm.

As a consequence of this, every Transform now has UnknownForm as both
its inputForm and outputForm. This PR modifies legacy Compiler and
testing infrastructure to schedule transforms NOT using
mergeTransforms/getLoweringTransforms (which rely on inputForm and
outputForm not being UnknownForm), but instead using the Dependency
API.

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

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

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

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

Changes the DependencyManager to use the private[options]
LinkedHashSet members that shadow the public Seq[_] dependencies. This
should avoid some unnecessary set construction and also improves
readability of the DependencyManager code.

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

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

Prevent infinite recursion in CheckResets

* Fixes #1516
* Tighten up logic for "casted literal" checking

Chisel emits all literals as UInts cast to the correct type, make
CheckResets support casts when checking that async reset registers are
reset to literal values.

Co-authored-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>

Fix mixed -E and -e emission

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

Fixes a bug where an Emitter was only checking for the presence of an
EmitCircuitAnnotation or EmitAllModulesAnnotation to control its
emission flavor (one-file-per-module or one-file). This changes the
check to ensure that the class of emitter matches that of the
annotation. This allows for correct behavior when mixing different
emitters, e.g., -E high -e middle.

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

* Remove unused imports

* [spec] Add Fixed to spec

* Fixes #1195
* Define type & parameters
* Add Fixed as argument type to type conversions
* Add Fixed as argument type to relevent PrimOps (with link to tables)
* Add asFixed PrimOp
* Add IncP/DecP/SetP primops
* Add fixed-point width/point propagation tables

* Update spec pdf

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

* EliminateTargetPaths: add lone instance test cases

* EliminateTargetPaths: don't rename lone instances

* get rid of trailing comma

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

* Split Passes.scala into separate files

* Add imports of implicit things

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

* update JsonProtocolSpec to test GroundType

* add custom serializer for GroundType

* get rid of trailing comma

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

* Support infoMode for Strings

It seemed like an API hole that I couldn't use infoMode with a string but had to manually create an iterator first.

* Fix build error

Co-authored-by: Jim Lawson <ucbjrl@berkeley.edu>

* Fix dynamic SubAccess of zero-length vectors

* Fixes #230
* Add new ZeroLengthVecs pass that occurs before RemoveAccesses
* Include this in stage.Forms.MidForm
* Add to High->Mid order in compiler test based on @seldridge feedback

* Use validif to produce out-of-bounds value in ZeroLengthVecs

* Update scaladoc

* Fix test imports

Remove deprecated "Gender" API in favor of "Flow"

* Remove few remaining uses of these passes from FIRRTL codebase

* Remove 'gender' as pattern match binding

* Add Release Notes section and check-box for checklist.

* moved PR template stuff around

Co-authored-by: Adam Izraelevitz <azidar@gmail.com>