[Bug tree-optimization/36493] [4.3/4.4 Regression] vectorizer aliasing bug

[irar at gcc dot gnu dot org]

------- Comment #3 from irar at gcc dot gnu dot org  2008-06-16 10:39 -------
Subject: Bug 36493

Author: irar
Date: Mon Jun 16 10:39:07 2008
New Revision: 136843

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=136843
Log:
        PR tree-optimization/36493
        * tree-vect-transform.c (vect_create_data_ref_ptr): Remove TYPE from
        the arguments list. Use VECTYPE to create vector pointer.
        (vectorizable_store): Fail if accesses through a pointer to vectype
        do not alias the original memory reference operands.
        Call vect_create_data_ref_ptr without the removed argument.
        (vectorizable_load): Likewise.
        (vect_setup_realignment): Call vect_create_data_ref_ptr without the
        removed argument.


Added:
    trunk/gcc/testsuite/gcc.dg/vect/pr36493.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-transform.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36493