[Bug tree-optimization/83609] [7/8 Regression] ICE in read_complex_part at gcc/expr.c:3202

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83609

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Jan  1 11:28:57 2018
New Revision: 256062

URL: https://gcc.gnu.org/viewcvs?rev=256062&root=gcc&view=rev
Log:
        PR middle-end/83609
        * expr.c (expand_assignment): Fix up a typo in simplify_gen_subreg
        last argument when extracting from CONCAT.  If either from_real or
        from_imag is NULL, use expansion through memory.  If result is not
        a CONCAT and simplify_gen_subreg fails, try to simplify_gen_subreg
        the parts directly to inner mode, if even that fails, use expansion
        through memory.

        * gcc.dg/pr83609.c: New test.
        * g++.dg/opt/pr83609.C: New test.

Added:
    branches/gcc-7-branch/gcc/testsuite/g++.dg/opt/pr83609.C
    branches/gcc-7-branch/gcc/testsuite/gcc.dg/pr83609.c
Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/expr.c
    branches/gcc-7-branch/gcc/testsuite/ChangeLog