[Bug target/84772] powerpc-spe: Spurious "is used uninitialized" warning, or possibly incorrect codegen for va_arg(long double)

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84772

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Mar  9 22:23:14 2018
New Revision: 258399

URL: https://gcc.gnu.org/viewcvs?rev=258399&root=gcc&view=rev
Log:
        PR target/84772
        * config/rs6000/rs6000.c (rs6000_gimplify_va_arg): Mark va_arg_tmp
        temporary TREE_ADDRESSABLE before gimplification of BUILT_IN_MEMCPY.
        * config/powerpcspe/powerpcspe.c (rs6000_gimplify_va_arg): Likewise.

        * gcc.dg/pr84772.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr84772.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/powerpcspe/powerpcspe.c
    trunk/gcc/config/rs6000/rs6000.c
    trunk/gcc/testsuite/ChangeLog