workflows: change directory name for synth.tcl and add source note

Author: magancarz

.github/workflows/static-power-analysis-flow.yml

@@ -60,7 +60,7 @@ jobs:
         run: |
           git clone https://github.com/The-OpenROAD-Project/OpenROAD-flow-scripts
           cd OpenROAD-flow-scripts && git checkout f53fbce71af0e7965b3fa76396ff6d3e8121b6bb
-          cp ../temp/synth.tcl flow/scripts/
+          cp ../scripts/synth.tcl flow/scripts/
 
       - name: Update OpenROAD ibex sources
         run: |
@@ -135,7 +135,7 @@ jobs:
         run: |
           git clone https://github.com/The-OpenROAD-Project/OpenROAD-flow-scripts
           cd OpenROAD-flow-scripts && git checkout f53fbce71af0e7965b3fa76396ff6d3e8121b6bb
-          cp ../temp/synth.tcl flow/scripts/
+          cp ../scripts/synth.tcl flow/scripts/
 
       - name: Update OpenROAD ibex sources
         run: |
@@ -232,7 +232,7 @@ jobs:
         run: |
           git clone https://github.com/The-OpenROAD-Project/OpenROAD-flow-scripts
           cd OpenROAD-flow-scripts && git checkout f53fbce71af0e7965b3fa76396ff6d3e8121b6bb
-          cp ../temp/synth.tcl flow/scripts/
+          cp ../scripts/synth.tcl flow/scripts/
 
       - name: Update OpenROAD ibex sources
         run: |

temp/synth.tcl renamed to scripts/synth.tcl

@@ -1,3 +1,5 @@
+# Synth script taken from OpenROAD-flow-scripts with additional `flatten -separator _` line before synth command
+
 source $::env(SCRIPTS_DIR)/synth_preamble.tcl
 read_checkpoint $::env(RESULTS_DIR)/1_synth.rtlil
 
@@ -24,7 +26,7 @@ if {[env_var_exists_and_non_empty SYNTH_OPERATIONS_ARGS]} {
   set synth_full_args [concat $synth_full_args "-extra-map $::env(FLOW_HOME)/platforms/common/lcu_kogge_stone.v"]
 }
 
-flatten -separator $
+flatten -separator _
 
 if {![env_var_equals SYNTH_HIERARCHICAL 1]} {
   # Perform standard coarse-level synthesis script, flatten right away