[Bug tree-optimization/14741] missing transformations lead to poorly optimized code

[jv244 at cam dot ac dot uk]

------- Comment #15 from jv244 at cam dot ac dot uk  2007-07-03 18:09 -------
current gfortran trunk is still about a factor of 8 slower than ifort:

> gfortran -O3 -ffast-math -ftree-vectorize -march=native test.f90
> ./a.out
   12.9808110000000        10.2399999999998
> ifort -xT -O2 test.f90
> ./a.out
   1.62810200000000        10.2399999999998

(first number is the time)


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14741