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simplemap: Map $xnor to $_XNOR_ cells

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The previous mapping to `$_XOR_` and `$_NOT_` predates the addition of
the `$_XNOR_` cell.
This commit is contained in:
Jannis Harder 2022-11-02 17:45:46 +01:00
parent f9db7c0599
commit 661fa5ff92
3 changed files with 5 additions and 20 deletions
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2
tests/opt/opt_expr_xnor.ys
View file

@ -32,7 +32,7 @@ select -assert-count 1 c:*
cd fine_keepdc
simplemap
opt_expr -keepdc
select -assert-count 1 t:$_XOR_
select -assert-count 1 t:$_XNOR_
cd
miter -equiv -flatten -make_assert -make_outputs gold coarse_keepdc miter3

7
tests/opt/opt_expr_xor.ys
View file

@ -22,9 +22,8 @@ simplemap
equiv_opt -assert opt_expr
design -load postopt
select -assert-none t:$_XOR_
select -assert-none t:$_XNOR_ # NB: simplemap does $xnor -> $_XOR_+$_NOT_
select -assert-count 3 t:$_NOT_
select -assert-none t:$_XNOR_
select -assert-count 2 t:$_NOT_
design -reset
read_verilog -icells <<EOT
@ -36,7 +35,7 @@ EOT
select -assert-count 2 t:$_XNOR_
equiv_opt -assert opt_expr
design -load postopt
select -assert-none t:$_XNOR_ # NB: simplemap does $xnor -> $_XOR_+$_NOT_
select -assert-none t:$_XNOR_
select -assert-count 1 t:$_NOT_