------- Comment #4 from ubizjak at gmail dot com 2008-03-08 18:16 -------
(In reply to comment #0)
> FAIL: gfortran.dg/array_constructor_12.f90 -O3 -fomit-frame-pointer
> execution
> test
> FAIL: gfortran.dg/array_constructor_12.f90 -O3 -fomit-frame-pointer
> -funroll-loops execution test
> FAIL: gfortran.dg/array_constructor_12.f90 -O3 -fomit-frame-pointer
> -funroll-all-loops -finline-functions execution test
> FAIL: gfortran.dg/array_constructor_12.f90 -O3 -g execution test
>
> The failures of gfortran.dg/array_constructor_12.f90 result from a
> segmentation
> fault. All failures disappear with -m64. Between the two builds I have
> replaced
> the first patch (comment #3) for PR33642 by the second one (comment #4).
This is vectorizer in action. Note that -msse2 is the default for
i686-apple-darwin, and the testcase indeed fails with -O2 -msse2
-ftree-vectorize on linux too.
It looks like wrong assumption for DImode alignment in the vectorizer to me.
Confirmed on linux using "-O2 -msse2 -ftree-vectorize".
--
ubizjak at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2008-03-08 18:16:11
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35496
