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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 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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This changes the CheckTypes.UniferredWidth exception to include the pretty
printed Target that was uninferred and suggests to the user that they may
have forgotten to assign to it. This changes the CheckTypes pass to
communicate the necessary Target information during AST traversal such
that when an uninferred width is found, the Target is known and available.
This also adds one test checking the message of the UniferredWidth
exception.
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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This adds a pretty printer for firrtl.annotation.Target and associated
tests. This uses a tree-like output where the following target
~Circuit|Module/foo:Foo>ref.field[0] will serialize to:
circuit Circuit:
└── module Module:
└── foo of Foo:
└── ref.field[0]
This enables better error messages and a human readable syntax better than
the existing serialize method (and avoiding the need for users to
understand the Target serialization syntax), but that is not intended to
be deserialized nor space efficient.
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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It is O(n) and every use is in an O(n) iteration resulting in O(n^2).
Same information can be extracted from create_exps which happens to also
be called at every use of get_flip.
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When constructing the black box helper file list (firrtl_black_box_resource_files.f), filter out Verilog header files (*.vh) - Fixes #917
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Formerly #865
Major Code Changes/Features Added:
Added Target trait as replacement for Named
Added TargetToken as token in building Target
Added GenericTarget as a catch-all Target
Added CircuitTarget, ModuleTarget, ReferenceTarget, and InstanceTarget
Added ResolvePaths annotation
Added EliminateTargetPaths (and helper class DuplicationHelper)
Updated Dedup to work with instance annotations
Updated RenameMap to work with instance annotations
DCE & ConstantProp extend ResolveAnnotationPaths
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This reverts commit 7e2f787e125227dc389d5cf1d09717748ecfed2e.
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Added Target, which now supports Instance Annotations. See #865 for details.
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This wraps interactions with a BlackBox resource file such that a
FileNotFoundException are wrapped in a BlackBoxNotFoundException and
rethrown. This provides a better, verbose error message to the user and avoids a
FileNotFoundException showing up as an internal FIRRTL error.
This adds tests that the expected exception is thrown for both
BlackBoxResourceAnno and BlackBoxResourceAnno.
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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This moves VerilogRename out of Passes.scala and genericizes it as the new
Transform KemoveKeywordCollisions. This new Transform will remove keywords
for arbitrary sets of reserved keyword.
This adds VerilogRename back as a class instead of an object.
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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Summary of changes to firrtl.passes.VerilogRename:
- Use "_" to mangle names that conflict with Verilog
keywords (previously "$")
- Rewrite to operate on the whole AST to propogate mangled ports and
module names
- Make VerilogRename a Transform (was previously a Pass)
- Renames are now propagated
- Adds documentation for new VerilogRename
This makes the VerilogRename Transform (previously a Pass) use an
underscore ('_') instead of a dollar sign ('$') to mangle names that
conflict with Verilog keywords. This prevents problems with potentially
buggy tools that are not expecting '$' in Verilog names.
This reimplements VerilogRename to be safe for name collisions that may
occur anywhere in the AST, e.g., in ports, module names, circuit names, or
in any statements/expressions. Previously, names were only mangled in
statements and in place. This resulted in problems where renames of ports
in a child's namespace would not be guaranteed to be mangled the same way
in a parent's namespace. The algorithm is reimplemented to walk all
modules in reverse topological order (from leafs to main) and relying on a
RenameMap to track name changes.
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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Summary of changes:
- Use "_" as an inlining delimiter instead of "$"
- Makes inlining avoid namespace conflicts
This changes the delimiter used for inlining to "_" instead of "$". This
avoids problems with buggy parsers that may not handle "$" correctly. As
ClockListTransform relies on the explicit use of "$", the delimiter is a
FIRRTL-private val that the ClockListTransform overrides (to the original
"$").
Namespace conflicts could occur previously, but are very rare as users
will almost never use "$" in a name (even though it's allowed by both the
FIRRTL and Verilog specifications). Moving to "_" increases the
probability of namespace conflicts occurring. This adds explicit checking
that inlined names will not introduce namespace conflicts and that
generated names are prefix unique (as defined in the spec).
Note: inlined modules may not have unique prefixes. A test is included
that this is the case and an ignored test shows what prefix uniqueness
would look like.
MISC:
- [skip chisel tests]: Changing the delimiter causes the Chisel
InlineSpec to fail as this explicitly checks for "$".
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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This makes findValidPrefix and enumerateNames both private to
FIRRTL (previously, these were private). This enables their use for name
generation by other FIRRTL passes/transforms.
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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This adds a method, cloneUnderlying, to Namespace that returns a copy of
the underlying mutable.HashSet. This is useful for constructing a
Namespace that you would like to manipulate manually without using
Namespace's methods to generate temporaries.
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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This adds a utility, expandPrefixes, that expands a string into all
possible prefixes based on a delimiter. Any repeated occurrence of the
delimiter is viewed as a contributing to a prefix. E.g., "foo_bar" expands
to Seq("foo_", "foo_bar"). This is useful for inlining and keyword
mangling on LowForm. You would like to be able to generate a new name that
is prefix unique with respect to a namespace.
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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When different levels of the circuit were annotated, the TopWiring signals of the lower levels would "run-over" the TopWiring signals of the higher levels
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* bug fixes in TopWiring
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add description nodes, transform; modify VerilogEmitter to emit comments
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This adds a SystemVerilogCompiler class that extends, without modifying,
the existing VerilogCompiler. This is used by FIRRTL's Driver and will
cause a warning to be emitted indicating that the SystemVerilogCompiler
behaves the same as the VerilogCompiler.
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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(#883)
* Filter resource file names to avoid including the same file multiple times.
Addresses issue #882.
* Use a Set instead of a Map to filter Verilog files.
* Use canonical paths for file name comparison and unify name generation.
Provide a common method for copying resources to a directory to ensure the same resource ends up with the same name if it's copied by multiple clients.
* Reduce confusion - another absolute -> canonical switch.
Use the canonical path on the verilator command line for the filter additional Verilog sources.
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Previously, mems marked no dedup would prevent mems with the same
instance name in other modules from deduping
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This adds an apply method to the LogLevel object for conversion from a
String to a LogLevel.value.
Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>
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The default of 0.002 can be less than the Verilog time precision, which
effectively causes it to be rounded down to 0. So, allow the user to
`define RANDOMIZE_DELAY to some other value.
If the macro is not defined, the old behavior is preserved.
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- Fixed edge case file name that starts with . and has no suffix
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Fixes #780
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Fixes a bug where registers could be instantiated after nodes that
referred to them
Also add WRef.apply utility for nodes
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* Support for load memory annotations in chisel
This PR
* Delays the BlackBoxSourceHelper transformation to the Emitter stage of the VerilogCompiler
* remove from VerilogCompiler
* move to VerilogEmitter
* Changes the verilog emitter to allow programmatic access to the verilog module declaration
* Creating a bindable module requires headers to match
* Provides a unit test that shows how to generate a bindable module.
* Binding support
Treadle needed LoadMemoryAnnotation to be in firrtl instead of chisel in order to recognize the annotations and use them for memory loading
* Binding support
- Fixed bug that handled suffixes on memory initializing files
* Binding support
- Add a bit more doc to the API provided by the VerilogRenderer
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* add FoldADD to const prop, add yosys miter tests
* add option for verilog compiler without optimizations
* rename FoldLogicalOp to FoldCommutativeOp
* add GetNamespace and RenameModules, GetNamespace stores namespace as a ModuleNamespaceAnnotation
* add constant propagation for Tail DoPrims
* add scaladocs for MinimumLowFirrtlOptimization and yosysExpectFalure/Success, add constant propagation for Head DoPrim
* add legalize pass to MinimumLowFirrtlOptimizations, use constPropBitExtract in legalize pass
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Previously, Vecs of Bundles that contained a zero-width element would
result in a ClassCastException
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On circuits with large numbers of width inferences, prepend to a linked
list instead of appending and having to make a copy.
Fixes #842
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This caused wrong message: "File a Firrtl Issue"
Instead of the correct "Reference XX is not fully initialized"
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[skip formal checks] LEC passes with Formality
* Improve code generation for smem RW-port wmode port
A common case for these port-enables is
wen = valid & write
ren = valid & !write
which the RW-port transform currently turns into
en = (valid & write) | (valid & !write)
wmode = valid & write
because it proved `wen` and `ren` are mutually exclusive via `write`.
Synthesis tools can trivially optimize `en` to `valid`, so that's not a
problem, but the wmode field can't be optimized if going into a black box.
This PR instead sets `wmode` to whatever node was used to prove
mutual exclusion, which is always a simpler expression. In this case:
en = (valid & write) | (valid & !write)
wmode = write
* In RemoveCHIRRTL, infer mask relative to port definition
Previously, it was inferred relative to the memory definition causing
the mask condition to be redundantly conjoined with the enable signal.
Also enable ReplSeqMems to ignore all ValidIfs (not just on Clocks) to
improve QoR.
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Fixes #756
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