Check that foreach counts counts from $left to $right. This means it should
count up if $left is less than $right and count down otherwise.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
vvp_reg.py requires 4 gold files. One for each of stdout and stderr of both
iverilog and vvp. Most of these log files will be empty for most test
cases. This will result in a lot of empty files being added to the
repository.
If a gold file for a specific output stream can not be found assume that
the output stream is supposed to empty. This allows to omit the empty gold
files.
Also remove all the existing empty gold files.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
This adds the "normal-vlog95" test type, because we need to run a different
set of commands for this to work so a new test type makes sense. This also
moves a few of the existing tests to the new format in order to test the
new test rig.
Check that packed array assignment patterns and struct assignment patterns
are supported for continuous assignments.
Check for both assignment to variables as well as array elements.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Add a regression test to show that the proper dumpfile is selected, by
noting in the output from the vvp command what file name it is creating.
To make this work, I also needed to add some capabilities to the vvp_reg.py
regression test rig.
This creates a new test suite driver and infrastructure for going
forward. This cleans up the descriptions for tests, and is more
extensible.
Include documentation for the new engine, so that new tests can go
here instead of the old test suite.
Check that struct assignment patterns with only positional arguments are
supported. Also check that invalid assignment patterns for structs report
an error.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Check that positional and nested positional assignment patterns are
supported for packed arrays. Also check that invalid assignment patterns
for packed arrays result in an error.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Check that package exports are supported. Also check for various scenarios
where package exports should fail.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
This is a test for github issue#800. This should work on all platforms,
but Windows seems weird. The issue seems to be with Windows comparing
gold files with CR-LF weirdly, so make all the tests internal.
Add additional enum compatibility tests that check for compatibility in
different contexts.
* Array element
* Function return value
* Function and task argument
* struct member
* class property
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Check that an error is reported when accessing a hierarchical identifier
through a package scoped identifier.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Check that function calls with empty arguments are supported. Check the
general case and special cases such as calling a function with empty
arguments as part of a module port binding or force statements in automatic
contexts.
Also check that calling a function with too many trailing empty arguments
as well as passing an empty argument for a port without a default value is
an error.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Check that class properties can be shadowed by local symbols in class
methods and also check that a package scoped identifier with the same name
as class property can be accessed in a class method.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
This includes support at the parser (pform) through enaboration
and the netlist format for the break and continue statements.
Elaboration actually already worked for for-loops, but since the code
generators need more information, this is a rewire of that support to
be explicit about for-loops. This means they are not rewritten as fancy
while loops. The code generators will have to handle that.
Given the elaboration of for-loops now work, write the vvp code generator
support needed to implement it.
Now that for-loops are presented as for-loops to the code generator, the
vlog95 code generator doesn't need to infer them anymore. Generate the code
more directly.
Also update the tests list so that the vlog95_reg tests all pass.
Check that it is possible to call a method on a package scoped identifier.
Both for built-in types as well as class objects.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Check that an error is reported when trying to access an imported
identifier through a hierarchical name.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Check that null-bytes get removed when reading a value through the VPI API
as a vpiStringVal. Also check that null-bytes are not removed from string
literals when string literals are read through the VPI API as a non
vpiStringVal.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
The VPI API for string literals does not correctly handle the case where a
null-byte ('\0') appears in the string literal. It uses strlen() to
calculate the length of the literal, which will give the wrong result if
there is a null-byte in the string literal. Instead of using strlen() use
the stored length to fix this.
In addition when formatting a string literal as a string ignore any
null-bytes. The LRM is not entirely clear what should happen to null-bytes
when formatting a value as a string. But the behavior of ignoring the
null-bytes is consistent with the rules of SystemVerilog for converting a
string literal to a SV string.
This problem can occur when a string literal gets null-byte left-padded due
to width of its context of its expression, but then optimization removes
part of the expression and only leaves the padded string literal.
E.g.
```
$display(0 ? "Yes" : "No");
```
will be transformed into
```
$display("\000No");
```
There is also one subtle change in behavior associated with this. The empty
string ("") is supposed to be equivalent to 8'h00. So e.g.
`$display(":%s:", "")` should print ": :" since the width of the empty
string is 1 byte and the %s modifier prints a string with the width of the
value, left-padding with spaces if necessary. The current implementation
will print "::" though. This change requires to update the marco_with_args
gold file.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Check that when assigning or casting a string literal or vector to a SV
string type that null-bytes are removed.
Also check that writing a null-byte to an element of a string variable is
ignored.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Check that an error is reported, rather than crashing, when trying to do a
package scoped function call when the function does not exist in the
package or is not a function.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Check that indices to package scoped identifiers are evaluated in the scope
where the identifier is accessed and not in the scope where the identifier
is declared.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cary R
mole99
Stephen Williams
Lars-Peter Clausen
Bill Lye