[Bug tree-optimization/89135] [7 Regression] internal compiler error: in gimple_split_edge, at tree-cfg.c:2747

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89135

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Sep  2 14:14:14 2019
New Revision: 275319

URL: https://gcc.gnu.org/viewcvs?rev=275319&root=gcc&view=rev
Log:
2019-09-02  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2019-03-14  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/89710
        * tree-ssa-loop-ch.c (should_duplicate_loop_header_p): Use
        safe_dyn_cast.

        * gcc.dg/torture/pr89710.c: New testcase.

        2019-03-14  Richard Biener  <rguenther@suse.de>

        PR middle-end/89572
        * tree-scalar-evolution.c (get_loop_exit_condition): Use
        safe_dyn_cast.
        * tree-ssa-loop-ivcanon.c (canonicalize_loop_induction_variables):
        Use gimple_location_safe.

        * gcc.dg/torture/pr89572.c: New testcase.

        2019-02-18  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/89296
        * tree-ssa-loop-ch.c (ch_base::copy_headers): Restrict setting
        of no-warning flag to cases that might emit the bogus warning.

        * gcc.dg/uninit-pr89296.c: New testcase.

        2019-02-21  Richard Biener  <rguenther@suse.de>

        PR middle-end/89392
        cp/
        * vtable-class-hierarchy.c (vtv_generate_init_routine): Do not
        make symtab process new functions here.

        2019-01-31  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/89135
        * tree-ssa-phiprop.c (pass_phiprop::execute): Skip blocks
        with abnormal preds.

        * gcc.dg/torture/pr89135.c: New testcase.

Added:
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/torture/pr89135.c
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/torture/pr89572.c
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/torture/pr89710.c
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/uninit-pr89296.c
Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/cp/ChangeLog
    branches/gcc-7-branch/gcc/cp/vtable-class-hierarchy.c
    branches/gcc-7-branch/gcc/testsuite/ChangeLog
    branches/gcc-7-branch/gcc/tree-scalar-evolution.c
    branches/gcc-7-branch/gcc/tree-ssa-loop-ch.c
    branches/gcc-7-branch/gcc/tree-ssa-loop-ivcanon.c
    branches/gcc-7-branch/gcc/tree-ssa-phiprop.c