[Bug tree-optimization/41454] [4.4/4.5 Regression] DOM miscompiles gcc.c-torture/execute/990513-1.c at -O2 -fno-tree-vrp

[matz at gcc dot gnu dot org]

------- Comment #3 from matz at gcc dot gnu dot org  2009-09-25 23:57 -------
Subject: Bug 41454

Author: matz
Date: Fri Sep 25 23:57:01 2009
New Revision: 152189

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=152189
Log:
        PR tree-optimization/41454
        * tree-ssa-dom (stmts_to_rescan): Remove variable.
        (tree_ssa_dominator_optimize): Don't allocate and free it.
        (dom_opt_leave_block): Don't iterate over it.
        (eliminate_redundant_computations): Don't return a value.
        (cprop_operand, cprop_into_stmt): Ditto.
        (optimize_stmt): Don't defer updating stmts.

testsuite/
        * gcc.dg/pr41454.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr41454.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-dom.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41454