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436d42c00c
This adds one simple piece of functionality to opt_expr: when a cell port is connected to a fully-constant signal (as determined by sigmap), the port is reconnected directly to the constant value. This is just enough optimization to fix the "non-constant $meminit input" problem without requiring a full opt_clean or a separate pass.
8 lines
224 B
Plaintext
8 lines
224 B
Plaintext
read_verilog opt_expr_constconn.v
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select -assert-count 1 t:$add
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select -assert-count 1 t:$add %ci w:C %i
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equiv_opt -assert opt_expr
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design -load postopt
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select -assert-count 1 t:$add
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select -assert-count 0 t:$add %ci w:C %i
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