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Subject: [Bug rtl-optimization/17088] poor fortran optimisation at -O2/3
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------- Comment #13 from jv244 at cam dot ac dot uk  2007-07-03 18:15 -------
looks like current mainline is much slower than ifort (300%) on this testcase
(on core2).

> ifort -xT -O2 test.f90
> ./a.out
  0.000000000000000E+000
  0.228014000000000       0.228014000000000
> gfortran -O3 -ffast-math -ftree-vectorize -march=native test.f90
> ./a.out
  0.00000000000000
  0.684042000000000       0.280018000000000

0.584042000000000 vs 0.228014000000000 seconds


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17088