[Bug rtl-optimization/68730] [6 Regression] wrong code at -O3 on x86_64-linux-gnu (in 32-bit mode)

[ienkovich at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68730

--- Comment #12 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #11)
> Reverting r232500 and r232413 results in the miscompilation again.  So if
> those changes are optimizations only we have a latent issue.

Those changes fix performance regression and were not supposed to resolve any
stability issue.