VLOG
Flow Consideration
If you use -fast=optimized then it is best to compile all verilog at once.
set vList {
a.v
b.v
c.v
}
set useOptimized 1
if $useOptimized {
T "vrt vlog -fast=optimized $vList"
} else {
# It is ok to run multiple jobs to maximize parallelism.
foreach v $vList {
T "vrt vlog $v"
}
}