rsz: allow report_design_area to report area without libertyfile

Signed-off-by: Peter Gadfort <[email protected]>

Author: gadfort

src/rsz/src/Resizer.tcl

@@ -377,7 +377,7 @@ sta::define_cmd_args "report_design_area" {}
 proc report_design_area { args } {
   sta::parse_key_args "report_design_area" args keys {} flags {}
   set util [format %.0f [expr [rsz::utilization] * 100]]
-  set area [sta::format_area [rsz::design_area] 0]
+  set area [format %.0f [expr [rsz::design_area] * 1e6 * 1e6]]
   utl::report "Design area ${area} u^2 ${util}% utilization."
 }
 

src/rsz/test/BUILD

@@ -155,6 +155,7 @@ TESTS = [
     "report_buffers_nangate45",
     "report_buffers_sky130hd",
     "report_buffers_sky130hs",
+    "report_design_area",
     "report_dont_touch",
     "report_dont_use",
     "report_dont_use_corners",

src/rsz/test/CMakeLists.txt

@@ -132,6 +132,7 @@ or_integration_tests(
     repair_wire9
     repair_wire10
     repair_wire11
+    report_design_area
     report_dont_touch
     report_dont_use
     report_dont_use_corners

src/rsz/test/report_design_area.ok

@@ -0,0 +1,7 @@
+[INFO ODB-0227] LEF file: Nangate45/Nangate45.lef, created 22 layers, 27 vias, 135 library cells
+[INFO ODB-0128] Design: gcd
+[INFO ODB-0130]     Created 54 pins.
+[INFO ODB-0131]     Created 571 components and 2554 component-terminals.
+[INFO ODB-0132]     Created 5 special nets and 1142 connections.
+[INFO ODB-0133]     Created 528 nets and 1412 connections.
+Design area 670 u^2 10% utilization.

src/rsz/test/report_design_area.tcl

@@ -0,0 +1,6 @@
+# report_design_area without liberty files
+source "helpers.tcl"
+read_lef Nangate45/Nangate45.lef
+read_def gcd_nangate45_placed.def
+
+report_design_area