Restrict use of anonymous identifier #1124
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dalance
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anonymous identifier can be used for - clock domain - unconnected output port (refs: veryl-lang#1122)
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Currently, anonymous identifier (
_) can be used at any location.This is invalid situation and caseses #1122.
This PR is to add limitation to use of anonymous identifier to fix this situation.
Anonymous identifier can be used only for:
fix #1122