[Bug fortran/32379] New: can't determine dependence (loop reversal required)

Sun, 17 Jun 2007 08:44:28 -0700 

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

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