http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52448



--- Comment #9 from Michael Matz <matz at gcc dot gnu.org> 2013-02-08 12:31:28 
UTC ---

Author: matz

Date: Fri Feb  8 12:31:19 2013

New Revision: 195883



URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195883

Log:

    PR tree-optimization/52448



    * tree-ssa-phiopt.c (struct name_to_bb): Add phase member.

    (nt_call_phase): New static.

    (add_or_mark_expr): Only mark accesses with newer phase than any

    call seen.

    (nonfreeing_call_p): New.

    (nt_init_block): Update nt_call_phase, mark blocks as visited.

    (nt_fini_block): Keep blocks marked as visited.

    (get_non_trapping): Initialize nt_call_phase, and reset aux pointer.



testsuite/

    PR tree-optimization/52448

    * gcc.dg/pr52448.c: New test.



Added:

    trunk/gcc/testsuite/gcc.dg/pr52448.c

Modified:

    trunk/gcc/ChangeLog

    trunk/gcc/testsuite/ChangeLog

    trunk/gcc/tree-ssa-phiopt.c

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