[Bug fortran/32377] New: can't determine dependence (source/destination overlap)

[tprince at computer dot org]

gfortran -O2  -ftree-vectorize -ftree-vectorizer-verbose=2 -c -v s243.f
The first array assignment is vectorized.  The second, which involves overlap
between source and destination, should be no problem to vectorize as long as
the loop is not reversed.  Significant advantage should be gained by fusion.

Simplified from
http://www.netlib.org/benchmark/vectors


-- 
           Summary: can't determine dependence (source/destination overlap)
           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=32377