--- Comment #4 from jb at gcc dot gnu dot org 2010-04-30 18:02 ---
Some more experimentation, on different hardware, reveals that the relative
performance of "rep stos" vs. loop depends heavily on the size of the object to
set, the optimization options (loop unrolling etc.), and presumab
--- Comment #3 from jb at gcc dot gnu dot org 2007-04-29 20:19 ---
Hmm, try e.g. the following (with gfortran the fixed sized arrays can use
builtin_memset whereas the allocatable arrays are done with a loop. Save as
.F90 (capital F) to force preprocessing to set the SZ macro.
! Test pe
--- Comment #2 from rguenth at gcc dot gnu dot org 2007-04-29 19:58 ---
Do you have a testcase that shows this behavior gcc vs. other?
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31750
--- Comment #1 from jb at gcc dot gnu dot org 2007-04-29 12:14 ---
Jakub made a related patch a while ago:
http://gcc.gnu.org/ml/gcc-patches/2006-08/msg01134.html
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31750
