[Bug target/59532] New: -mstack-arg-probe is undocumented

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59532

            Bug ID: 59532
           Summary: -mstack-arg-probe is undocumented
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com

There is no documentation for x86 -mstack-arg-probe command
line option.