[Bug tree-optimization/33319] [4.2/4.3 regression] g++.dg/tree-ssa/pr27549.C ICE with vectorization

["victork at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #2 from victork at gcc dot gnu dot org  2007-09-17 09:37 -------
Subject: Bug 33319

Author: victork
Date: Mon Sep 17 09:37:31 2007
New Revision: 128539

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=128539
Log:

        PR tree-optimization/33319
        * tree-vect-analyze.c (vect_same_range_drs): New.
        (vect_vfa_range_equal): New.
        (vect_is_duplicate_ddr): Removed.
        (vect_mark_for_runtime_alias_test): Do not perform marking when
        optimizing for size or max_param for alias checking is zero.
        Move the function before vect_analyze_data_ref_dependence.
        (vect_analyze_data_ref_dependence): Add call to
        vect_mark_for_runtime_alias_test in two cases when dependence
        is not clear.
        (vect_analyze_data_ref_dependences): Do not call to
        vect_mark_for_runtime_alias_test.
        (vect_prune_runtime_alias_test_list): New.
        (vect_analyze_loop): Add call to vect_prune_runtime_alias_test_list.
        * tree-vect-transform.c (vect_estimate_min_profitable_iters):
        Update vec_outside_cost.
        (vect_vfa_segment_size): More compact code, use TYPE_SIZE_UNIT.
        (vect_create_cond_for_alias_checks): Build the base address of data
        reference from DR_GROUP_FIRST_DR.
        (vect_loop_versioning): New.
        (vect_transform_loop): Add a call to vect_loop_versioning.
        Remove factored out code.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-vect-analyze.c
    trunk/gcc/tree-vect-transform.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33319