[Bug fortran/30388] gfortran42 is slower than g77 3.4 about 10%

[jvdelisle at gcc dot gnu dot org]

------- Comment #6 from jvdelisle at gcc dot gnu dot org  2007-01-06 04:44 -------
With my system:  x86-64 Linux

Using -O3 -ffast-math in both cases:

g77:       MFLOPS:  893.198364

gfortran:  MFLOPS:   895.7278


Using -O3 -ffast-math in both cases:

g77:       MFLOPS:  930.39801

gfortran:   MFLOPS:   891.1194


Using -O1 -ffast-math in both cases:

g77:        MFLOPS:  962.237854

gfortran:   MFLOPS:   890.9428


Using -O1 -ffast-math in both cases:

g77:        MFLOPS:  259.945648

gfortran:   MFLOPS:   199.7145 


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30388