[Bug target/25413] wrong alignment or incorrect address computation in vectorized code on Pentium 4 SSE

[dorit at gcc dot gnu dot org]

------- Comment #18 from dorit at gcc dot gnu dot org  2007-07-25 08:51 -------
Subject: Bug 25413

Author: dorit
Date: Wed Jul 25 08:51:12 2007
New Revision: 126904

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=126904
Log:
2007-07-25  Dorit Nuzman  <dorit@il.ibm.com>
            Devang Patel  <dpatel@apple.com>

        PR tree-optimization/25413
        * targhooks.c (default_builtin_vector_alignment_reachable): New.
        * targhooks.h (default_builtin_vector_alignment_reachable): New.
        * tree.h (contains_packed_reference): New.
        * expr.c (contains_packed_reference): New.
        * tree-vect-analyze.c (vector_alignment_reachable_p): New.
        (vect_enhance_data_refs_alignment): Call
        vector_alignment_reachable_p.
        * target.h (vector_alignment_reachable): New builtin.
        * target-def.h (TARGET_VECTOR_ALIGNMENT_REACHABLE): New.
        * config/rs6000/rs6000.c (rs6000_vector_alignment_reachable): New.
        (TARGET_VECTOR_ALIGNMENT_REACHABLE): Define.

2007-07-25  Dorit Nuzman  <dorit@il.ibm.com>
            Devang Patel  <dpatel@apple.com>
            Uros Bizjak  <ubizjak@gmail.com>

        PR tree-optimization/25413
        * lib/target-supports.exp (check_effective_target_vect_aligned_arrays):
        New procedure to check if arrays are naturally aligned to the vector
        alignment boundary.
        * gcc.dg/vect/vect-align-1.c: New.
        * gcc.dg/vect/vect-align-2.c: New.
        * gcc.dg/vect/pr25413.c: New.
        * gcc.dg/vect/pr25413a.c: New.


Added:
    branches/gcc-4_2-branch/gcc/testsuite/gcc.dg/vect/pr25413.c
    branches/gcc-4_2-branch/gcc/testsuite/gcc.dg/vect/pr25413a.c
    branches/gcc-4_2-branch/gcc/testsuite/gcc.dg/vect/vect-align-1.c
    branches/gcc-4_2-branch/gcc/testsuite/gcc.dg/vect/vect-align-2.c
Modified:
    branches/gcc-4_2-branch/gcc/ChangeLog
    branches/gcc-4_2-branch/gcc/config/rs6000/rs6000.c
    branches/gcc-4_2-branch/gcc/expr.c
    branches/gcc-4_2-branch/gcc/target-def.h
    branches/gcc-4_2-branch/gcc/target.h
    branches/gcc-4_2-branch/gcc/targhooks.c
    branches/gcc-4_2-branch/gcc/targhooks.h
    branches/gcc-4_2-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_2-branch/gcc/testsuite/lib/target-supports.exp
    branches/gcc-4_2-branch/gcc/tree-vect-analyze.c
    branches/gcc-4_2-branch/gcc/tree.h


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25413