------- Comment #4 from burnus at gcc dot gnu dot org 2007-11-18 08:37 -------
> It's 64-bit only, and it appears to be a glibc bug: with glibc on x86_64,
> sinf((float) integer_variable) is slower than (float)sin((double)
> integer_variable).
Can it be that it has been fixed meanwhile? Using demo1.f on x86-64 (openSUSE
factory; glibc 2.6.1 (20070803), g77 3.3.5 20050117; gfortran 4.3.0 20071117;
AMD Athlon64 x2 4800+) I get the following timings with "-O2":
g77 gfortran
-m32 real(4) 0.408s 0.421s
-m64 real(4) 1.040s 0.589s
-m32 real(8) 0.411s 0.408s
-m64 real(8) 0.976s 0.968s
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34128
