[Bug target/83868] i386: Clean up thunk function generation

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83868

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
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             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2018-01-15
   Target Milestone|---                         |9.0
     Ever confirmed|0                           |1