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

[gary at intrepid dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64164

--- Comment #49 from Gary Funck <gary at intrepid dot com> ---
(In reply to Alexandre Oliva from comment #48)
> The errors reported in comments 44, 45, 46, and 47 are fixed in the git
> branch aoliva/pr64164.  I'm giving it all some more testing before posting
> an updated, consolidated patch.

I applied your patch (commit 9357ff1, 8/2/15) to our GUPC branch, based off
trunk version 226386 on gcc112 (PPC64LE).  It bootstrapped fine and passed the
tests with "-O0 --enable-checking" and "-O3 --disable-checking".