[Bug target/66697] New: Feature request: -mstackrealign and force_align_arg_pointer for x86_64

[bucaneer at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66697

            Bug ID: 66697
           Summary: Feature request: -mstackrealign and
                    force_align_arg_pointer for x86_64
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: bucaneer at gmail dot com
  Target Milestone: ---

-mstackrealign option and force_align_arg_pointer attribute work for 32bit x86,
but not x86_64.

In particular, this makes Wine unable to deal with some untidy 64bit Windows
apps: https://bugs.winehq.org/show_bug.cgi?id=27680