not only "debug symbols" that binary will contain, it will also contain code within some #ifdef's; yet some -Oxxx are disabled
in reply to Re^3: Is your Perl running as fast as possible?
in thread Is your Perl running as fast as possible?
Let's RTFS a bit -- following is an excerpt from ./win32/makefile.mk (same for linux build, I guess)
# uncomment next line if you want debug version of perl (big,slow)
# If not enabled, we automatically try to use maximum optimization
# with all compilers that are known to have a working optimizer.
#CFG *= Debug