ICC2 Useful commands

icc2_useful_commands.txt

#start GUI
icc_shell>start_gui

#report max transition constaints
icc_shell> report_constraint -max_transition -verbose 

#report timing with transition with pins (through that pin)
icc_shell> report_timing -thr <instance_name>/<pin_name>

#report timing from register clk to d of next flipflop
icc_shell> report_timing -to <instance1_name>/<pin_name> -from <instance2_name>/clk

#see complete clock path
icc_shell>report_timing -to <pin_name> -path_type full_clock_expanded -delay max

#high light path in GUI
icc_shell>change_selection [get_timing_paths -to <instace_name>/<pin>]

#see clock tree information
icc_shell>report_clock_tree

#shows the worst path timing with the given clock
icc_shell>report_timing -group <group_name>

#prints only end points
icc_shell>report_timing -to readary -path_type short -max_paths 5

#summary of all
icc_shell>report_qor


#insert buffer
icc_shell>insert_buffer <instance_name>/d -lib_cell <lib_name>

#insert clock inverters
icc_shell>insert_buffer <instance_name>/<clk pin> -lib_cell <lib inverter> -inverter_pair

#legalize placement incrementally 
icc_shell>legalize_placement -incremental

#list the lib cells
icc_shell>get_lib_cell

#set false path
icc_shell>set_false_path -from <instance1_name>/<pin_name> -to <instance2_name>/<pin_name>

#list of all cells matching with instance name and also sequencial elements
>get_cells *<name>* -filter "is_sequential==true"

#finding sizeof of collection
>sizeof_collections [get_cells *<name>* -filter "is_sequential==true"]

#show the terminal names
>get_terminals *<name>*

#check the direction of port
>get_attribute [get_ports <port_name>] direction

#check if constant value is driven on any pin
>get_attribute [get_pins <instance_name>/<pin>] constant_value


#get any standardcells with xnor in the clock path
>filter_collection [all_fanout -clock_tree -only_cells -flat -levels 1000000 ] "ref_name=~*xnor*"

#list of all cells from previous flipflop
>lsort -uniq [get_attribute  [all_fanin -to <instance_name> -flat -only_cells] -fl_name]

#get exceptions 
>get_exceptions -from <instance_name>

#report exceptions
>report_exceptions

#possible list of command with given string
icc2_shell> help *except*
 all_exceptions       # Create a collection of exceptions in a mode
 ctm::get_exceptions  # Returns ctmesh stopping cells/nets/pins collection
 ctm::is_exception    # Check if -pin|-net|-cell is in ctmesh stopping
 get_exception_groups # Create a collection of exception groups
 get_exceptions       # Create a collection of timing exceptions
 remove_supernet_exceptions # Removes supernet transparent pins
 report_exceptions    # Report timing exceptions
 report_supernet_exceptions # Report supernet transparent pins
 set_supernet_exceptions # Mark supernet transparent pins
 

#lists all the attibutes related to net
>list_attributes -class net -application

#filter collections based on the attribute
>filter_collection [get_flat_cells *] "size_only==true && full_name=~*<name>*" 
>filter_collection [all_fanout -from <instance_name>/pin ] "full_name=~*<name1>* || full_name=~*<name2>*"
 
 
#set don't touch attribute on all nets except nets connected to matching pin1 and pin2
>set_dont_touch [get_nets -of_objects  [get_pins -of_objects [get_cells *<instance_name>*] -filter "name!=<pin1> && name!=<pin2"] -filter "full_name=~*<net_name1>* || full_name=~*<net_name2>*]
>set_attribute [get_nets -of_objects  [get_pins -of_objects [get_flat_cells *<instance_name>* -filter "full_name!~*<match_name>*"] -filter "name!=<pin1> && name!=<pin2>"]] dont_touch true

#report name rules
>report_name_rules

#define the rule if not there, Lower case only + numbers and _
>define_name_rules LC_ONLY -allowed "a-z 0-9"


#define renaming rule and then apply rules
>define_name_rules my_map_rule -map {{"first","second_renamed"}}
>change_names -rules my_map_rule

#rename instances
>set_attribute -objects [get_cells {{instance[1]_abcd}}] -name name -value instance_1_abcd


#stop propogating clock
>set_clock_sense -logical_stop_propagation  <instance_name>/clk

#report clock gating checks
>report_clock_gating_check

#reports all the violations
>report_constraints -min_delay -all_violators -scenarios <scenario name>


#reports if clock property is on the pin
>get_attribute [get_selection] clocks or get_attribute [get_pins <instance_name>/<pin_name>] clocks


#replace a cell with different size or refname, sometime helps to resolve shorts
>change_link [get_cell <instance_name>] <lib_cell_to_be_replaced.


#unfix objects(if only fixed) so that it can be moved on legalize placements
>set_fixed_objects [get_cells <instance_name>*] -unfix


#getting the lower left x for bbox, similarly upper right x(bbox_urx) and upper right y(bbox_ury)
>get_attribute [gs] bbox_llx


#get app options
>get_app_options *hold*

#hold fixing in icc2, run this after cts
>set_app_options -name clock_opt.hold.effort -value high
>set_app_options -name refine_opt.hold.effort -value high

#finding the proc source
>get_proc_source <proc_name>

#max transition report
>report_constraints -all_violators -max_transition > transition.txt

#reports pvt etc about each corner
>report_corners

#reports derate setting for current corner
>report_timing_derate

#choose layer for a net
>set_routing_rule -min_routing_layer <min_metal> -max_routing_layer <max_metal> {net_name1 net_name2}

#set clock balance points
>set_clock_balance_points -consider_for_balancing true -balance_points "instance1/clk_pin instance2/clk_pin"

still more useful commands for gathering all sort of reports

can you give more commands on using the manual in icc2 shell