127 lines
4.9 KiB
Tcl
127 lines
4.9 KiB
Tcl
# Test ExceptionPath.cc: complex multi-through false/multicycle paths
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# with rise/fall transition specifiers, priority calculation, merging.
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# Also exercises WriteSdc.cc exception writing with rise/fall transitions,
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# Sdc.cc resetPath for various exception types.
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# Targets: ExceptionPath.cc fromThruToPriority with rise/fall combos,
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# ExceptionPath::intersectsPts, ExceptionPath::mergeable,
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# ExceptionPathLess comparison, ExceptionThru::matches rise/fall,
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# ExceptionTo::matches rise/fall, ExceptionFrom::matches rise/fall,
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# Sdc.cc addException with rise/fall from/thru/to,
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# WriteSdc.cc writeException with -rise_from/-fall_from/-rise_to/-fall_to
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source ../../test/helpers.tcl
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read_liberty ../../test/nangate45/Nangate45_typ.lib
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read_verilog sdc_test2.v
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link_design sdc_test2
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create_clock -name clk1 -period 10 [get_ports clk1]
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create_clock -name clk2 -period 20 [get_ports clk2]
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set_input_delay -clock clk1 2.0 [get_ports in1]
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set_input_delay -clock clk1 2.0 [get_ports in2]
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set_input_delay -clock clk2 2.0 [get_ports in3]
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set_output_delay -clock clk1 3.0 [get_ports out1]
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set_output_delay -clock clk2 3.0 [get_ports out2]
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############################################################
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# Test 1: false_path with -rise_from / -fall_from
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############################################################
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set_false_path -rise_from [get_ports in1] -to [get_ports out1]
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set_false_path -fall_from [get_ports in2] -to [get_ports out1]
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############################################################
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# Test 2: false_path with -rise_to / -fall_to
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############################################################
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set_false_path -from [get_ports in1] -rise_to [get_ports out2]
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set_false_path -from [get_ports in2] -fall_to [get_ports out2]
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############################################################
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# Test 3: false_path with -rise_through / -fall_through
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############################################################
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set_false_path -rise_through [get_pins buf1/Z] -to [get_ports out1]
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set_false_path -fall_through [get_pins inv1/ZN] -to [get_ports out2]
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############################################################
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# Test 4: Combination of rise/fall from + through + to
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############################################################
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set_false_path -rise_from [get_ports in3] \
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-through [get_pins or1/ZN] \
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-fall_to [get_ports out2]
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set_false_path -fall_from [get_ports in3] \
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-rise_through [get_pins or1/ZN] \
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-to [get_ports out1]
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############################################################
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# Test 5: multicycle_path with rise/fall
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############################################################
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set_multicycle_path -setup 2 -rise_from [get_ports in1] -to [get_ports out1]
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set_multicycle_path -hold 1 -fall_from [get_ports in1] -to [get_ports out1]
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set_multicycle_path -setup 3 -from [get_ports in2] -rise_to [get_ports out1]
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set_multicycle_path -hold 2 -from [get_ports in2] -fall_to [get_ports out1]
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############################################################
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# Test 6: max_delay with rise/fall
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############################################################
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set_max_delay -rise_from [get_ports in1] -to [get_ports out2] 7.0
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set_max_delay -from [get_ports in3] -fall_to [get_ports out1] 8.0
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set_min_delay -fall_from [get_ports in2] -to [get_ports out2] 0.5
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set_min_delay -from [get_ports in3] -rise_to [get_ports out2] 0.3
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############################################################
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# Test 7: Write SDC and verify rise/fall transitions preserved
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############################################################
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set sdc1 [make_result_file sdc_exc_risefall1.sdc]
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write_sdc -no_timestamp $sdc1
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set sdc2 [make_result_file sdc_exc_risefall2.sdc]
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write_sdc -no_timestamp -compatible $sdc2
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############################################################
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# Test 8: report_checks to validate exceptions applied
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############################################################
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report_checks -path_delay max
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report_checks -path_delay min
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report_checks -path_delay max -from [get_ports in1]
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report_checks -path_delay max -from [get_ports in2]
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report_checks -path_delay max -from [get_ports in3]
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############################################################
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# Test 9: Unset rise/fall exceptions
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############################################################
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unset_path_exceptions -rise_from [get_ports in1] -to [get_ports out1]
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unset_path_exceptions -fall_from [get_ports in2] -to [get_ports out1]
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unset_path_exceptions -from [get_ports in1] -rise_to [get_ports out2]
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unset_path_exceptions -from [get_ports in2] -fall_to [get_ports out2]
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############################################################
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# Test 10: Write after unset
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############################################################
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set sdc3 [make_result_file sdc_exc_risefall3.sdc]
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write_sdc -no_timestamp $sdc3
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############################################################
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# Test 11: Read back SDC
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############################################################
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read_sdc $sdc1
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report_checks -path_delay max
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set sdc4 [make_result_file sdc_exc_risefall4.sdc]
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write_sdc -no_timestamp $sdc4
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