in reply to Re^2: Perl bytecode
in thread Perl bytecode

With the -exec flag, B::Concise gives output closer to your example:
$ perl -MO=Concise,-exec -we'print "Hello, world!\n";' 1 <0> enter 2 <;> nextstate(main 1 -e:1) v 3 <0> pushmark s 4 <$> const[PV "Hello, world!\n"] s 5 <@> print vK 6 <@> leave[1 ref] vKP/REFC -e syntax OK
by showing execution order rather than the op tree (but no longer shows optimized-away ops and can make branching ops less clear).