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This adds the StageError Error. This Error indicates that a
Stage/Phase has hit an unrecoverable error, it cannot continue, and
requests that the entire Stage/Phase hierarchy be killed with an
ExitFailure ExitCode. StageMain is modified to catch StageError and
exit the application with the provided exit code number.
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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Fixes a threading bug in where lazy reading of file
caused a problem for multithreaded access to the that was read.
Changes all uses of io.Source to use new API
getText
getLines
getTextResource
getLinesResouce
Make style to only import FileUtils and not its methods
So code is more explicit as e.g. FileUtils.getText()
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Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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This changes the Dependency API to specify dependencies in terms of
classes subtyping the DependencyAPI trait. Previously, this was
invariant which caused a bunch of ugly, unneeded .asInstanceOf jank.
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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Adds the DependencyManager class which can be used to determine a
legal sequence of TransformLikes given their Dependency API
constraints. A DependencyManager determines an ordering that results
in some target TransformLikes being run (without invalidations) given
an initial state (some other set of TransformLikes).
Algorithmically, this works as follows:
1. A DAG of TransformLikes w/ invalidation edges is constructed (the
"invalidate graph")
2. A DAG of TransformLikes w/ prerequisite and dependent edges is
constructed (the "dependents graph")
3. A toplogical sort of the dependents graph, seeded with the reverse
topological sort of the invalidate graph, gives an ordering of
TransformLikes.
4. This ordering is examined, node by node, cleaning up any mismatches
between TransformLikes by solving DependencyManager sub-problems.
As new graph nodes (which are classes) are found, these are lazily
constructed. Data structures are maintained that map from classes to
objects and back. All discovered classes will point to the same object.
Determinism is maintained internally using LinkedHashMap and
LinkedHashSet.
Other changes:
- Some methods that generate Graphviz for a DependencyManager are
added.
- One concrete implementation of a DependencyManager is added for
Phases called "PhaseManager".
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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This adds a PreservesAll that can be used to override the default
invalidation scheme (invalidated everything except yourself) such that
nothing is invalidated.
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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This adds a TransformLike mixin, DependencyAPI, that defines the basis
of the Dependency API for Stage/Phase. DependencyAPI defines three
members that define dependency relationships for some TransformLike
"Foo":
- "Prerequisites" define TransformLikes that should run before Foo
- "Dependents" define TransformLikes that should run after Foo. This
allows Foo to inject prerequisites into some other TransformLike.
- "Invalidates" define a function that will return true if a specific
TransformLike would be invalidated by Foo
Prerequisites and Dependents are not Sets due to lack of a fast,
immutable Set that preserves insertion order. Internally, these are
converted to a private LinkedHashSet.
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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* Add sbt-scalafix
* Add scalafix guide to README
* Remove Unused Import
* Remove deprecated procedure syntax
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Abstracts away option writing such that users no longer have to
understand scopt semantics. This adds a ShellOption class and a
HasShellOptions trait for something which provides one or more
ShellOptions. This refactors the FIRRTL codebase to use this style of
option specification.
Adds and uses DeletedWrapper to automatically generate
DeletedAnnotations.
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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This switches the OptionsView/Viewer typeclass to use more canonical
approaches and helper methods. This uses a context bound instead of an
explicitly specified implicit argument. Additionally, this adds an
apply method to OptionsView to enable more canonical use of the
OptionsView typeclass.
With this, you can now do things like `Viewer[FirrtlOptions].view` in
addition to the old (and still available)
`Viewer.view[FirrtlOptions]`. Uses of the latter are updated to use
the former.
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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This adds FirrtlStage, a reimplementation of the original FIRRTL
Driver as a Stage. This updates the original firrtl.options package to
implement FirrtlStage (namely, TransformLike is added) along with
FirrtlMain. Finally, the original FIRRTL Driver is converted to a
compatibility wrapper around FirrtlStage.
For background, Stage and Phase form the basis of the Chisel/FIRRTL
Hardware Compiler Framework (HCF). A Phase is a class that performs a
mathematical transformation on an AnnotationSeq (in effect, a
generalization of a FIRRTL transform). Curtly, a Stage is a Phase that
also provides a user interface for generating annotations. By their
construction, Phases are designed to be composed sequentially into a
transformation pipeline.
This modifies the existing options package (which provides
Stage/Phase) to build out a type hierarchy around Stage/Phase. This
adds TransformLike[A] which implements a mathematical transformation
over some type A. Additionally, and as an interface between different
TransformLikes, this adds Translator[A, B] which extends
TransformLike[A], but does an internal transformation over type B.
This is used to interface Phases with the existing FIRRTL compiler.
This adds a runTransform method to Phase that, like
Transform.runTransform, will automatically detect deleted Annotations
and generate DeletedAnnotations.
The new FirrtlStage, a reimplementation of FIRRTL's Driver, is added
as a Stage composed of the following Phases:
1. AddDefaults - add default annotations
2. AddImplicitEmitter - adds an implicit emitter derived from the
compiler
3. Checks - sanity check the AnnotationSeq
4. AddCircuit - convert FIRRTL input files/sources to circuits
5. AddImplicitOutputFile - add a default output file
6. Compiler - run the FIRRTL compiler
7. WriteEmitted - write any emitted modules/circuits to files
The Driver is converted to a compatibility layer that replicates old
Driver behavior. This is implemented by first using new toAnnotation
methods for CommonOptions and FirrtlExecutionOptions that enable
AnnotationSeq generation. Second, the generated AnnotationSeq is
preprocessed and sent to FirrtlStage. The resulting Phase order is
then:
1. AddImplicitAnnotationFile - adds a default annotation file
2. AddImplicitFirrtlFile - adds a default FIRRTL file using top name
3. AddImplicitOutputFile - adds an output file from top name
4. AddImplicitEmitter - adds a default emitter derived from a
compiler and any split modules command line option
5. FirrtlStage - the aforementioned new FirrtlStage
Finally, the output AnnotationSeq is then viewed as a
FirrtlExecutionResult. This compatibility layer enables uninterrupted
usage of old Driver infrastructure, e.g., FirrtlExecutionOptions and
CommonOptions can still be mutated directly and used to run the
Driver.
This results in differing behavior between the new FirrtlStage and the
old Driver, specifically:
- FirrtlStage makes a clear delineation between a "compiler" and an
"emitter". These are defined using separate options. A compiler is
"-X/--compiler", while an emitter is one of "-E/--emit-circuit" or
"-e/--emit-modules".
- Related to the above, the "-fsm/--split-modules" has been removed
from the FirrtlStage. This option is confusing once an implicit
emitter is removed. It is also unclear how this should be handled
once the user can specify multiple emitters, e.g., which emitter
should "--split-modules" apply to?
- WriteOutputAnnotations will, by default, not write
DeletedAnnotations to the output file.
- The old top name ("-tn/--top-name") option has been removed from
FirrtlStage. This option is really a means to communicate what
input and output files are as opposed to anything associated with
the circuit name. This option is preserved for the Driver
compatibility layer.
Additionally, this changes existing transform scheduling to work for
emitters (which subclass Transform). Previously, one emitter was
explicitly scheduled at the end of all transforms for a given
compiler. Additional emitters could be added, but they would be
scheduled as transforms. This fixes this to rely on transform
scheduling for all emitters. In slightly more detail:
1. The explicit emitter is removed from Compiler.compile
2. An explicit emitter is added to Compiler.compileAndEmit
3. Compiler.mergeTransforms will schedule emitters as late as
possible, i.e., all emitters will occur after transforms that
output their input form.
4. All AddImplicitEmitter phases (DriverCompatibility and normal)
will add RunFirrtlTransformAnnotations to add implicit emitters
The FIRRTL fat jar utilities are changed to point at FirrtlStage and not
at the Driver. This has backwards incompatibility issues for users
that are using the utilities directly, e.g., Rocket Chip.
The Logger has been updated with methods for setting options based on
an AnnotationSeq. This migrates the Logger to use AnnotationSeq as
input parameters, e.g., for makeScope. Old-style methods are left in
place and deprecated. However, the Logger is not itself a Stage.
The options of Logger Annotations are included in the base Shell and
Stage is updated to wrap its Phases in a Logger scope.
Additionally, this changes any code that does option parsing to always
prepend an annotation as opposed to appending an annotation. This is
faster, but standardizing on this has implications for dealing with
the parallel compilation annotation ordering.
A Shell will now put the initial annotations first (in the order the
user specified) and then place all annotations generating from parsing
after that. This adds a test case to verify this behavior.
Discovered custom transforms (via `RunFirrtlTransformAnnotation`s) are
discovered by the compiler phase in a user-specified order, but are
stored in reverse order to more efficiently prepend (as opposed to
append) to a list. This now reverses the transform order before
execution to preserve backwards compatibility of custom transform
ordering.
The Compiler phase also generates one deleted annotation for each
`RunFirrtlTransformAnnotation`. These are also reversed.
Miscellaneous small changes:
- Split main method of Stage into StageMain class
- Only mix in HasScoptOptions into Annotation companion objects (h/t
@jackkoenig)
- Store Compiler in CompilerAnnotation
- CompilerNameAnnotation -> CompilerAnnotation
- Make Emitter abstract in outputSuffix (move out of FirrtlOptions)
- Add DriverCompatibility.AddImplicitOutputFile that will add an
output file annotation based on the presence of a
TopNameAnnotation. This is important for compatibility with the
old Driver.
- Cleanup Scaladoc
- Refactor CircuitOption to be abstract in "toCircuit" that converts
the option to a FirrtlCircuitAnnotation. This allows more of the
conversion steps to be moved out of AddCircuit and into the actual
annotation.
- Add WriteDeletedAnnotation to module WriteOutputAnnotations
- A method for accessing a FirrtlExecutionResultView is exposed in
FIRRTL's DriverCompatibilityLayer
- Using "--top-name/-tn" or "--split-modules/-fsm" with FirrtlStage
generates an error indicating that this option is no longer
supported
- Using FirrtlStage without at least one emitter will generate a
warning
- Use vals for emitter in Compiler subclasses (these are used to
build RunFirrtlTransformAnnotations and the object should be
stable for comparisons)
- Fixes to tests that use LowTransformSpec instead of
MiddleTransformSpec. (SimpleTransformSpec is dumb and won't
schedule transforms correctly. If you rely on an emitter, you need
to use the right transform spec to test your transform if you're
relying on an emitter.)
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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This changes the base Shell to print information about all registered
libraries/transforms. This addresses an @azidar comment about difficulty
debugging whether registration worked.
This also changes the "FIRRTL Transform Options" help text for registered
transforms to only print if registered transforms exist.
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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This fixes all Scaladoc warnings except for those trying to link to
Java.
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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This breaks firrtl.options.Stage into a small type hierarchy:
* Phase: something that transforms an AnnotationSeq
* Stage extends Phase: a Phase with a Command Line Interface
Some of the old "common options" (input annotation file and target
directory) are moved into firrtl.options and provided as part of the Stage
class. Stage will automatically preprocess an input annotation sequence to
resolve all input annotation files and add a default target directory.
Minor changes:
* Adds ViewException
* Stops mixing in the DoNotTerminateOnExit trait into the default Shell
parser
* Add StageOptionsView
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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This adds a new package, "firrtl.options", that provides a framework for
working with options inside and outside FIRRTL.
Small changes:
- Make TerminateOnExit return the correct exit code
- Deprecate mutable TerminateOnExit
- Add immutable DoNotTermianteOnExit
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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