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From: "amker at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/65447] AArch64: iv-opt causes bad addressing
Date: Wed, 20 May 2015 05:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65447

--- Comment #3 from amker at gcc dot gnu.org ---
Author: amker
Date: Wed May 20 05:15:56 2015
New Revision: 223433

URL: https://gcc.gnu.org/viewcvs?rev=223433&root=gcc&view=rev
Log:

        PR tree-optimization/65447
        * tree-ssa-loop-ivopts.c (struct iv_use): New fields.
        (dump_use, dump_uses): Support to dump sub use.
        (record_use): New parameters to support sub use.  Remove call to
        dump_use.
        (record_sub_use, record_group_use): New functions.
        (compute_max_addr_offset, split_all_small_groups): New functions.
        (group_address_uses, rewrite_use_address): New functions.
        (strip_offset): New declaration.
        (find_interesting_uses_address): Call record_group_use.
        (add_candidate): New assertion.
        (infinite_cost_p): Move definition forward.
        (add_costs): Check INFTY cost and return immediately.
        (get_computation_cost_at): Clear setup cost and dependent bitmap
        for sub uses.
        (determine_use_iv_cost_address): Compute cost for sub uses.
        (rewrite_use_address_1): Rename from old rewrite_use_address.
        (free_loop_data): Free sub uses.
        (tree_ssa_iv_optimize_loop): Call group_address_uses.

        gcc/testsuite
        PR tree-optimization/65447
        * gcc.dg/tree-ssa/pr65447.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr65447.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-loop-ivopts.c