[Bug middle-end/43796] [4.5/4.6 Regression] ICE in is_overflow_infinity (tree-vrp.c:184) with gfortran -fcheck=bounds -O2

[rguenth at gcc dot gnu dot org]

------- Comment #4 from rguenth at gcc dot gnu dot org  2010-04-19 15:17 -------
Subject: Bug 43796

Author: rguenth
Date: Mon Apr 19 15:17:26 2010
New Revision: 158520

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=158520
Log:
2010-04-19  Richard Guenther  <rguent...@suse.de>

        PR tree-optimization/43796
        * tree-vrp.c (adjust_range_with_scev): Lookup init and step
        from SCEV in the lattice.
        (vrp_visit_phi_node): Dump change.

        * gfortran.dg/pr43796.f90: New testcase.

Added:
    trunk/gcc/testsuite/gfortran.dg/pr43796.f90
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vrp.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43796