[Bug lto/70955] [6 Regression] Wrong code generation for __builtin_ms_va_list with -flto

["vries at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70955

--- Comment #27 from Tom de Vries <vries at gcc dot gnu.org> ---
Author: vries
Date: Sun Aug 28 07:41:52 2016
New Revision: 239806

URL: https://gcc.gnu.org/viewcvs?rev=239806&root=gcc&view=rev
Log:
Backport "Tag {ms,sysv}_va_list_type_node with '{ms,sysv}_abi va_list'
attribute"

        2016-08-28  Tom de Vries  <tom@codesourcery.com>

        backport from trunk:
        2016-08-28  Tom de Vries  <tom@codesourcery.com>

        PR lto/70955
        * config/i386/i386.c (ix86_build_builtin_va_list_64): Tag type with
        'sysv_abi va_list' attribute.
        (ix86_build_builtin_va_list): Tag type with 'ms_abi va_list' attribute.
        (ix86_canonical_va_list_type): Handle 'sysv_abi/ms_abi va_list'
        attributes.

        * gcc.dg/pr70955.c: New test.
        * gcc.dg/lto/pr70955_0.c: Same.
        * gcc.dg/lto/pr70955_1.c: Same.

Added:
    branches/gcc-6-branch/gcc/testsuite/gcc.dg/lto/pr70955_0.c
    branches/gcc-6-branch/gcc/testsuite/gcc.dg/lto/pr70955_1.c
    branches/gcc-6-branch/gcc/testsuite/gcc.dg/pr70955.c
Modified:
    branches/gcc-6-branch/gcc/ChangeLog
    branches/gcc-6-branch/gcc/config/i386/i386.c
    branches/gcc-6-branch/gcc/testsuite/ChangeLog