[Bug target/63892] [5 Regression] gcc.dg/sibcall-3.c fails on darwin with -m32

[mrs at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63892
Bug 63892 depends on bug 65150, which changed state.

Bug 65150 Summary: [5 Regression] r220875 causes bootstrap failure on x86_64 
darwin
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65150

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED