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* Absorb WRef into Reference
* Absorb WSubField into SubField
* Absorb WSubIndex into SubIndex
* Absorb WSubAccess into SubAccess
* Absorb WDefInstance into DefInstance
------------------------- API CHANGE SEVERITY --------------------------
This is projected to not break source-level compatibility with any known
user code. However, it will break *binary* compatibility with all
existing user FIRRTL passes, as is generally allowed with major
releases of FIRRTL.
--------------------------- DESCRIPTION --------------------------------
Previously, there were several nodes in WIR.scala that had a one-to-one
correspondance with existing nodes in the standard firrtl.ir hierarchy.
These nodes would have a case class resembling the corresponding
standard IR node, but with the addition of one or more "analysis"
fields.
Since these fields (such as kind) represent helpful info that can be
invalidated or set to Unknown (e.g. UnknownKind for Kind), it does not
cause any issues to simply include these fields on any in-memory
representation of FIRRTL IR. Although other systems for tracking FIRRTL
analyses have evolved over time, the ubiquity of pattern-matching on
these fields has lead most core and custom transforms to be written
against WIR, rather than IR.
This PR unifies the IRs by adding the fields that would be in an
"augmented" WIR node directly into the corresponding IR node; i.e., the
"type" and "kind" fields from WRef are added directly to the definition
of the Reference case class, while these "repetitive" WIR case classes
are removed entirely.
-------------------- SOURCE-COMPATIBILITY ADAPTERS ---------------------
Several object methods are added to WIR.scala to maintain
source-compatiblity for passes that used WIR. These objects define
factory methods and unapply methods, so passes that relied on implicit
case class factories or pattern matching for the removed WIR types will
remain perfectly source-compatible. However, these do not guarantee
compatibility at the binary level.
The types of the removed WIR case classes are also added as type aliases
to the top-level firrtl package, which allows code that relies on
explicit constructor calls or reflection to retain source-compatibility.
Finally, additional explicit factory methods are added to the companion
objects of the newly-augmented IR case classes, which allows user code
to avoid having to specify any of the new analysis fields. Existing code
that created non-WIR IR nodes will be able to continue using the
previous factory signatures, which will cause all omitted analysis
fields to be set to Unknown.
---------------------- UNMITIGATED API CHANGES -------------------------
While passes that used WIR will be source-compatible with this change,
there is one significant change that affects any pass currently using
non-WIR IR: the signatures of pattern-matching cases for Reference,
SubField, SubIndex, SubAccess, and DefInstance must change to
accommodate the extra fields.
This cannot be worked at the API level due to restrictions on unapply
overloading, but it could theoretically be solved with macros or other
static rewriting. However, only four core transforms (RemoveProto,
ToWorkingIR, Dedup, and RemoveChirrtl) use non-WIR IR, and it is
expected that no user code currently relies on it, so the expected
migration strategy is simply to change the small fraction of code
relying on these nodes.
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If an annotation cannot be serialized by json4s, we should not throw
exceptions when doing trace-level logging.
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* RenameMap: remove implicit rename chaining
* RenameMap: remove trailing comma
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
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* - modify firrtlEquivalenceTest to use yosys equiv_simple/equiv_induct instead of miter
- add RemoveValidIf pass to MinimumLowFirrtlOptimization
* add EquivalenceTest to FirrtlSpec.scala, make classes in IntegrationSpec.scala abstract
* change types of inputForm/outputForm to CircuitForm
* change EquivalenceTest message
* remove ICache equivalence tests
* fix rebase errors
* Add Ops scalatests to LEC suite
* Only run compiler-path-comparison LEC tests on Ops design
* Fixup issues with merge
Co-authored-by: Albert Magyar <albert.magyar@gmail.com>
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* Fixes #1561
* Add test for zero-reset reg from #1561
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Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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* consolidated wire <type> x; assign x = y; to wire <type> x = y;
* Remove dead code from Emitter.scala
Co-authored-by: Albert Magyar <albert.magyar@gmail.com>
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* Bugfix - have AppendInfo use MultiInfo, rather than appending with :
* Address reviewer feedback
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
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Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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* Update scalatest to 3.1.1
* Update scalatest to 3.1.1
* Update scalatest to 3.1.1
Co-authored-by: Jim Lawson <ucbjrl@berkeley.edu>
Co-authored-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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* adding init macros
* fix missing tick
* adding more documentation; fixing up emitter tests
* adding initial-guarding macro test
* prefixing macros with FIRRTL
* cleanup
* typo fix
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
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Workaround for https://github.com/verilator/verilator #2300
present in Verilator versions v4.026 - v4.032. This transform turns AND
reductions for expressions > 64-bits into an equality check with all
ones. It is included as a prerequisite for all Verilog emitters.
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This adds missing invalidations to four transforms:
- ExpandConnects
- RemoveAccesses
- SplitExpressions
- VerilogMemDelays
This necessarily updates test cases which expect exact transform
orders to reflect the new order.
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
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Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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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>
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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>
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Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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* 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>
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* 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>
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* 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
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* Remove few remaining uses of these passes from FIRRTL codebase
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* Previously, this test failed whenever InlineCasts was run
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* Make RenameTop DependencyAPI-compliant
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* Fixes #1464
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* Removed unused imports in src/test/
* Update ScalaTest deprecations.
* Update scalatest from 3.0.8 to 3.1.0; apply auto fix for deprecations
Co-authored-by: Jack Koenig <koenig@sifive.com>
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* Pull out common test utilities into a separate package
* Project a fat jar for test utilities
Co-authored-by: Albert Magyar <albert.magyar@gmail.com>
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* Fixes #1096
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* Fixes #1436
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Fixes #1453
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Introduce Preset Register Specialized Emission
- Introduce EmissionOption trait
- Introduce PresetAnnotation & PresetRegAnnotation
- Enable the collection of Annotations in the Emitter
- Introduce collection mechanism for EmissionOptions in the Emitter
- Add PropagatePresetAnnotation transform to annotate register for emission and clean-up the useless reset tree (no DCE involved)
- Add corresponding tests spec and tester
Co-authored-by: Jack Koenig <koenig@sifive.com>
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* Fixes #1214
Co-authored-by: Jack Koenig <koenig@sifive.com>
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Co-authored-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
Co-authored-by: Albert Magyar <albert.magyar@gmail.com>
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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* Provide an annotation mix-in that marks RTs as dontTouch
* Update src/main/scala/firrtl/transforms/OptimizationAnnotations.scala
Co-Authored-By: Albert Magyar <albert.magyar@gmail.com>
* Update src/test/scala/firrtlTests/DCETests.scala
Co-Authored-By: Albert Magyar <albert.magyar@gmail.com>
* Update src/main/scala/firrtl/transforms/OptimizationAnnotations.scala
* Update OptimizationAnnotations.scala
Co-authored-by: Albert Magyar <albert.magyar@gmail.com>
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* Add firrtl-json serializers
* Added support for ports, info. Added docs and tests
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* Avoid IndexOutOfBoundsException when Bits has too few consts
* Check for negative consts in all relevant primops
* Use BigInt for all checks on primop constants
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This reverts commit f77487d37bd7c61be231a8000a3197d37cf55499.
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Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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This adds a prettyPrint method to the DependencyManager to enable
textual visualization of the TransformLikes that a DependencyManager
determines need to be run.
This also cleans up the GraphViz visualization with better edge
coloring and now uses the `name` method when labeling graphviz nodes.
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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This makes a change to the Dependency API that breaks chisel3. This
needs to [skip chisel tests], but is fixed with
https://github.com/freechipsproject/chisel3/pull/1270.
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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