[Bug tree-optimization/89253] [8 Regression] ICE in split_loop, at tree-ssa-loop-split.c:566

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89253

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Feb 13 10:02:47 2019
New Revision: 268838

URL: https://gcc.gnu.org/viewcvs?rev=268838&root=gcc&view=rev
Log:
2019-02-13  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2019-02-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/89253
        * tree-ssa-loop-split.c (tree_ssa_split_loops): Check we can
        duplicate the loop.

        * gfortran.dg/pr89253.f: New testcase.

        2019-02-08  Richard Biener  <rguenther@suse.de>

        PR middle-end/89223
        * tree-data-ref.c (initialize_matrix_A): Fail if constant
        doesn't fit in HWI.
        (analyze_subscript_affine_affine): Handle failure from
        initialize_matrix_A.

        * gcc.dg/torture/pr89223.c: New testcase.

        2019-01-28  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/88739
        * tree-ssa-sccvn.c (vn_reference_lookup_3): Avoid generating
        BIT_FIELD_REFs of non-mode-precision integral operands.

        * gcc.c-torture/execute/pr88739.c: New test.

Added:
    branches/gcc-8-branch/gcc/testsuite/gcc.c-torture/execute/pr88739.c
    branches/gcc-8-branch/gcc/testsuite/gcc.dg/torture/pr89223.c
    branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr89253.f
Modified:
    branches/gcc-8-branch/gcc/ChangeLog
    branches/gcc-8-branch/gcc/testsuite/ChangeLog
    branches/gcc-8-branch/gcc/tree-data-ref.c
    branches/gcc-8-branch/gcc/tree-ssa-loop-split.c
    branches/gcc-8-branch/gcc/tree-ssa-sccvn.c