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synth: Run clockgate for automatic ICG insertion #2657

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synth: Run clockgate for automatic ICG insertion #2657

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2 changes: 2 additions & 0 deletions flow/scripts/synth.tcl
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Original file line number Diff line number Diff line change
Expand Up @@ -65,8 +65,10 @@ foreach cell $::env(DONT_USE_CELLS) {
# Technology mapping of flip-flops
# dfflibmap only supports one liberty file
if {[env_var_exists_and_non_empty DFF_LIB_FILE]} {
clockgate -liberty $::env(DFF_LIB_FILE) -min_net_size 8 {*}$dfflibmap_args
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The min_net_size value could be a flow parameter, do you want me to make it one? MIN_CLOCK_GATE_FF_GROUP ?

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Yes

dfflibmap -liberty $::env(DFF_LIB_FILE) {*}$dfflibmap_args
} else {
clockgate -liberty $::env(DONT_USE_SC_LIB) -min_net_size 8 {*}$dfflibmap_args
dfflibmap -liberty $::env(DONT_USE_SC_LIB) {*}$dfflibmap_args
}
opt
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