[Bug target/77728] [5/6/7/8 Regression] Miscompilation multiple vector iteration on ARM

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728

--- Comment #37 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Apr 25 13:56:10 2017
New Revision: 247241

URL: https://gcc.gnu.org/viewcvs?rev=247241&root=gcc&view=rev
Log:
        PR target/77728
        * config/aarch64/aarch64.c (struct aarch64_fn_arg_alignment): New
        type.
        (aarch64_function_arg_alignment): Return aarch64_fn_arg_alignment
        struct.  Ignore DECL_ALIGN of decls other than FIELD_DECL for
        the alignment computation, but return their maximum in warn_alignment.
        (aarch64_layout_arg): Adjust aarch64_function_arg_alignment caller.
        Emit a -Wpsabi note if warn_alignment is 16 bytes, but alignment
        is smaller.
        (aarch64_function_arg_boundary): Likewise.  Simplify using MIN/MAX.
        (aarch64_gimplify_va_arg_expr): Adjust aarch64_function_arg_alignment
        caller.
testsuite/
        * g++.dg/abi/pr77728-2.C: New test.

Added:
    branches/gcc-7-branch/gcc/testsuite/g++.dg/abi/pr77728-2.C
Modified:
    branches/gcc-7-branch/gcc/ChangeLog
    branches/gcc-7-branch/gcc/config/aarch64/aarch64.c
    branches/gcc-7-branch/gcc/testsuite/ChangeLog