[Bug rtl-optimization/64164] [4.9/5/6 Regression] one more stack slot used due to one less inlining level

[aoliva at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64164
Bug 64164 depends on bug 66978, which changed state.

Bug 66978 Summary: [6 Regression] bootstrap failure with 
--with-multilib-list=m32,m64,mx32
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66978

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