------- Comment #13 from kargl at gcc dot gnu dot org 2007-10-05 17:50 ------- (In reply to comment #9) > > Hope this helps. > Sure, I've got the problem. The problem is actually in RTL optimization, where > dse1 pass removes wrong insn. > > Suprisingly, the problem is in line 61 of comunpack.f: > > --> bscale = 2.0**real(idrstmpl(2)) > dscale = 10.0**real(-idrstmpl(3)) >
This meant for Manfred instead of Uros, but it does contain the relevant info. Manfred, you told me elsewhere that you use -fforce-addr to achieve better performance. Whoever wrote this code should be flogged. idrstmpl is an INTEGER variable, and gfortran can generate much faster code for integer exponents than calling __builtin_powf. Try changing the lines to bscale = 2.0**idrstmpl(2) dscale = 10.0**(-idrstmpl(3)) This, of course, doesn't fix the underlying bug. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33638
