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Accept (and ignore) SystemVerilog unique/priority if.

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Add support to the "read_verilog -sv" parser to validate the
"unique", "unique0", and "priority" keywords in contexts where
they're legal according to 1800-2012 12.4.2.

This affects only the grammar accepted; the behaviour of conditionals
is not changed.  (But accepting this syntax will provide scope for
possible optimisations as future work.)

Three test cases ("unique_if", "unique_if_else", and
"unique_if_else_begin") verify that the keywords are accepted where
legal and rejected where illegal, as described in the final paragraph
of 12.4.2.
This commit is contained in:
Gary Wong 2025-05-22 19:12:35 -06:00
parent 6c67b29bbb
commit 9770ece187
6 changed files with 66 additions and 2 deletions
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kernel/constids.inc
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@ -153,6 +153,7 @@ X(parameter)
X(PORTID)
X(PRIORITY)
X(PRIORITY_MASK)
X(promoted_if)
X(Q)
X(R)
X(ram_block)