Hi, This might make 2! On Wed, Apr 6, 2011 at 10:59 PM, vikramsp <vikram2rhyme@xxxxxxxxx> wrote: > > Hello there. I was exploring about peephole and peephole2 optimisation > passes of gcc c compiler. when compiling a test.c programme like this - > > ~$ gcc test.c -fpeephole2 -da > > there was no dump for peephole2 pass. same is for -fpeephole. > Does it mean that peephole passes are not done or is there any > other way to do so. > Please help me > You have to have one of the -O options (I doubt that -O0 counts) to have optimizations done. It won't help to just have your favorite -f: gcc -c -O2 -fpeephole -da test.c If you use -v you might see if -fpeephole is already included in one of the -Ox where x is one of 1, 2, or 3. Thanks. kevin > Best Regards > vikramsp > -- > View this message in context: http://old.nabble.com/gcc-peephole-problem-tp31339261p31339261.html
