[Bug fortran/32239] optimize power in loops, use __builtin_powi instead of _gfortran_pow_r4_i4

[burnus at gcc dot gnu dot org]

------- Comment #4 from burnus at gcc dot gnu dot org  2007-06-25 19:52 -------
"At the moment the vectorizer only vectorizes builtin_pow if the exponent is
either 2 or 0.5. whereas if we expand constant exponents in the gfortran
frontend (gfc_conv_cst_int_power) it vectorizes for other constant integer
powers as well"

I've filled PR middle-end/32503 for this.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32239