[Bug middle-end/39326] Segmentation fault with -O1, out of memory with -O2

jakub at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Thu Mar 21 20:04:00 GMT 2013


Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
                 CC|                            |jakub at gcc dot gnu.org

--- Comment #50 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-03-21 20:04:45 UTC ---
Author: rguenth
Date: Thu Mar 21 14:45:36 2013
New Revision: 196878

URL: http://gcc.gnu.org/viewcvs?rev=196878&root=gcc&view=rev
2013-03-21  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/39326
    * tree-ssa-loop-im.c (UNANALYZABLE_MEM_ID): New define.
    (MEM_ANALYZABLE): Adjust.
    (record_mem_ref_loc): Move bitmap ops ...
    (gather_mem_refs_stmt): ... here.  Use the shared mem-ref for
    unanalyzable refs, do not record locations for it.
    (analyze_memory_references): Allocate ref zero as shared
    unanalyzable ref.
    (refs_independent_p): Do not test for unanalyzed mems here.
    (ref_indep_loop_p_1): Special-case disambiguation against
    the unanalyzed ref.
    (ref_indep_loop_p): Assert we are not queried for the
    unanalyzed mem.


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