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[Bug fortran/32379] New: can't determine dependence (loop reversal required)
- From: "tprince at computer dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 17 Jun 2007 15:44:19 -0000
- Subject: [Bug fortran/32379] New: can't determine dependence (loop reversal required)
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
gfortran -O2 -ftree-vectorize -ftree-vectorizer-verbose=2 -c -v s112.f
The case could be vectorized by taking the array elements in reverse order (as
specified in the source).
ifort vectorizes by creating a temporary array (when the reversal is removed
from the source), losing performance.
--
Summary: can't determine dependence (loop reversal required)
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: tprince at computer dot org
GCC build triplet: x86_64-unknown-linux-gnu
GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32379