[Bug tree-optimization/89209] [9 Regression] ICE in build_ref_for_model, at tree-sra.c:1791

[jamborm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89209

--- Comment #7 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Author: jamborm
Date: Mon Feb 18 08:59:04 2019
New Revision: 268980

URL: https://gcc.gnu.org/viewcvs?rev=268980&root=gcc&view=rev
Log:
[PR 89209] Avoid segfault in a peculiar corner case in SRA

2019-02-18  Martin Jambor  <mjam...@suse.cz>

        PR tree-optimization/89209
        * tree-sra.c (create_access_replacement): New optional parameter
        reg_tree.  Use it as a type if non-NULL and access type is not of
        a register type.
        (get_repl_default_def_ssa_name): New parameter REG_TYPE, pass it
        to create_access_replacement.
        (sra_modify_assign): Pass LHS type to get_repl_default_def_ssa_name.
        Check lacc is non-NULL before attempting to re-create it on the RHS.

        testsuite/
        * gcc.dg/tree-ssa/pr89209.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr89209.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-sra.c