🚀 go-pugleaf

| hello
| 
| which optimizing options are used when I use gcc with -O ?
| My documentations says, that -fthread-jumps and -fdelayed-branch
| (if available) are used. And: on some machines other flags may also
| be turned on.
| 
| My question: on a sparc-station, which are those flags? 
|              and, if this would depend on the configuration, where
| 	     can i find that ?

If you do gcc -O -Q -v foo.c it will show you all of the -f options
that are set.  -Q is not documented.  It suppresses passing -quiet to
the cc1* phase.  If -quiet is not passed to cc1*, it becomes more
verbose to help debugging the compiler (it prints all of the -f
switches, prints each function as processed, and prints a summary at
the end where the compiler spent its time).

The OPTIMIZATION_OPTIONS macro controls this.

--
Michael Meissner	email: meissner@osf.org		phone: 617-621-8861
Open Software Foundation, 11 Cambridge Center, Cambridge, MA, 02142

Old hackers never die, their bugs just increase.