[Bug tree-optimization/91162] [7/8 Regression] ICE: tree check: expected class 'type', have 'exceptional' (error_mark) in useless_type_conversion_p, at gimple-expr.c:86 (error: invalid 'PHI' argument)

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91162

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Aug 30 11:39:19 2019
New Revision: 275100

URL: https://gcc.gnu.org/viewcvs?rev=275100&root=gcc&view=rev
Log:
2019-08-30  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2019-08-12  Richard Biener  <rguenther@suse.de>

        PR lto/91375
        * tree.c (free_lang_data_in_type): Do not free TYPE_BINFO dependent on
        flag_devirtualize.

        2019-07-31  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/91293
        * tree-vect-slp.c (vect_build_slp_tree_2): Do not swap operands
        of reduction stmts.

        * gcc.dg/vect/pr91293-1.c: New testcase.
        * gcc.dg/vect/pr91293-2.c: Likewise.
        * gcc.dg/vect/pr91293-3.c: Likewise.

        2019-07-31  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/91280
        * tree-ssa-structalias.c (get_constraint_for_component_ref):
        Decompose MEM_REF manually for offset handling.

        * g++.dg/torture/pr91280.C: New testcase.

        2019-07-19  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/91200
        * tree-ssa-phiopt.c (cond_store_replacement): Check we have
        no PHI nodes in middle-bb.

        * gcc.dg/torture/pr91200.c: New testcase.

        2019-07-15  Richard Biener  <rguenther@suse.de>

        PR middle-end/91162
        * tree-cfg.c (move_block_to_fn): When releasing a virtual PHI
        node make sure to replace all uses with something valid.

        * gcc.dg/autopar/pr91162.c: New testcase.

        2019-07-11  Richard Biener  <rguenther@suse.de>

        PR middle-end/91131
        * gimplify.c (gimplify_compound_literal_expr): Force a temporary
        when the object is volatile and we have not cleared it even though
        there are no nonzero elements.

        * gcc.target/i386/pr91131.c: New testcase.

        2019-07-10  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/91126
        * tree-ssa-sccvn.c (vn_reference_lookup_3): Adjust
        native encoding offset for BYTES_BIG_ENDIAN.

        * gcc.dg/torture/pr91126.c: New testcase.

Added:
    branches/gcc-8-branch/gcc/testsuite/g++.dg/torture/pr91280.C
    branches/gcc-8-branch/gcc/testsuite/gcc.dg/autopar/pr91162.c
    branches/gcc-8-branch/gcc/testsuite/gcc.dg/torture/pr91126.c
    branches/gcc-8-branch/gcc/testsuite/gcc.dg/torture/pr91200.c
    branches/gcc-8-branch/gcc/testsuite/gcc.dg/vect/pr91293-1.c
    branches/gcc-8-branch/gcc/testsuite/gcc.dg/vect/pr91293-2.c
    branches/gcc-8-branch/gcc/testsuite/gcc.dg/vect/pr91293-3.c
    branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/pr91131.c
Modified:
    branches/gcc-8-branch/gcc/ChangeLog
    branches/gcc-8-branch/gcc/gimplify.c
    branches/gcc-8-branch/gcc/testsuite/ChangeLog
    branches/gcc-8-branch/gcc/tree-cfg.c
    branches/gcc-8-branch/gcc/tree-ssa-phiopt.c
    branches/gcc-8-branch/gcc/tree-ssa-sccvn.c
    branches/gcc-8-branch/gcc/tree-ssa-structalias.c
    branches/gcc-8-branch/gcc/tree-vect-slp.c
    branches/gcc-8-branch/gcc/tree.c