[Bug c++/89698] [7 Regression] Run-time error due to optimization of field access after cast at -Os/-O2 and higher

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89698

--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Sep  4 08:06:24 2019
New Revision: 275366

URL: https://gcc.gnu.org/viewcvs?rev=275366&root=gcc&view=rev
Log:
2019-09-04  Richard Biener  <rguenther@suse.de>

        Backport from mainline
        2019-04-09  Richard Sandiford  <richard.sandiford@arm.com>

        * tree-vect-data-refs.c (vect_get_smallest_scalar_type): Always
        use gimple_expr_type for load and store calls.  Skip over the
        condition argument in a conditional internal function.
        Protect use of TREE_INT_CST_LOW.

        2019-04-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/90006
        * tree-vect-data-refs.c (vect_get_smallest_scalar_type): Handle
        calls like lrint.

        * gcc.dg/vect/bb-slp-pr90006.c: New testcase.

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

        PR middle-end/89698
        * fold-const.c (operand_equal_p): For INDIRECT_REF check
        that the access types are similar.

        * g++.dg/torture/pr89698.C: New testcase.

        2019-01-18  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/88903
        * tree-vect-stmts.c (vectorizable_shift): Verify we see all
        scalar stmts a SLP shift amount is composed of when detecting
        shifts by scalars.

        * gcc.dg/vect/pr88903-1.c: New testcase.
        * gcc.dg/vect/pr88903-2.c: Likewise.

        2018-12-11  Richard Biener  <rguenther@suse.de>

        PR middle-end/88448
        PR middle-end/88415
        * tree-complex.c (update_complex_assignment): Properly transfer
        or clean EH info around gimple_assign_set_rhs_with_ops.

        * gcc.dg/gomp/pr88415.c: New testcase.

        2018-11-15  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/88030
        * tree-complex.c (need_eh_cleanup): New global.
        (update_complex_assignment): Mark blocks that need EH update.
        (expand_complex_comparison): Likewise.
        (tree_lower_complex): Allocate and deallocate need_eh_cleanup,
        perform EH cleanup and schedule CFG cleanup if that did anything.

        * gcc.dg/tsan/pr88030.c: New testcase.

        2018-11-08  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/87929
        * tree-complex.c (expand_complex_comparison): Clean EH.

        * gcc.dg/pr87929.c: New testcase.

        2017-07-25  Eric Botcazou  <ebotcazou@adacore.com>

        * gimple.c (gimple_assign_set_rhs_with_ops): Do not ask gsi_replace
        to update EH info here.

Added:
    branches/gcc-7-branch/gcc/testsuite/g++.dg/torture/pr89698.C
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/gomp/pr88415.c
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/pr87929.c
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/tsan/pr88030.c
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/vect/bb-slp-pr90006.c
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/vect/pr88903-1.c
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/vect/pr88903-2.c
Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/fold-const.c
    branches/gcc-7-branch/gcc/gimple.c
    branches/gcc-7-branch/gcc/internal-fn.c
    branches/gcc-7-branch/gcc/internal-fn.h
    branches/gcc-7-branch/gcc/testsuite/ChangeLog
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/autopar/pr91162.c
    branches/gcc-7-branch/gcc/tree-complex.c
    branches/gcc-7-branch/gcc/tree-vect-data-refs.c
    branches/gcc-7-branch/gcc/tree-vect-stmts.c