[Bug fortran/62283] basic-block vectorization fails

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62283

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Aug 28 13:13:45 2014
New Revision: 214678

URL: https://gcc.gnu.org/viewcvs?rev=214678&root=gcc&view=rev
Log:
2014-08-28  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/62283
    * tree-vect-data-refs.c (vect_enhance_data_refs_alignment):
    Do not peel loops for alignment where the vector loop likely
    doesn't run at least VF times.

    * gfortran.dg/vect/pr62283.f: New testcase.
    * gcc.dg/tree-ssa/cunroll-5.c: Adjust.
    * gcc.dg/vect/costmodel/i386/costmodel-vect-31.c: Likewise.
    * gcc.dg/vect/costmodel/i386/costmodel-vect-33.c: Likewise.
    * gcc.dg/vect/costmodel/x86_64/costmodel-vect-31.c: Likewise.
    * gcc.dg/vect/costmodel/x86_64/costmodel-vect-33.c: Likewise.
    * gcc.dg/vect/vect-33.c: Likewise.

Added:
    trunk/gcc/testsuite/gfortran.dg/vect/pr62283.f
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/tree-ssa/cunroll-5.c
    trunk/gcc/testsuite/gcc.dg/vect/costmodel/i386/costmodel-vect-31.c
    trunk/gcc/testsuite/gcc.dg/vect/costmodel/i386/costmodel-vect-33.c
    trunk/gcc/testsuite/gcc.dg/vect/costmodel/x86_64/costmodel-vect-31.c
    trunk/gcc/testsuite/gcc.dg/vect/costmodel/x86_64/costmodel-vect-33.c
    trunk/gcc/testsuite/gcc.dg/vect/vect-33.c
    trunk/gcc/tree-vect-data-refs.c