[Bug target/93658] [9/10 Regression] infinite loop building ghostscript and icu with -O3 on powerpc64le-linux-gnu

[bergner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93658

--- Comment #13 from Peter Bergner <bergner at gcc dot gnu.org> ---
Simple backports to GCC 8 and 9 exposed some bugs that have already been fixed
on trunk.  The following patch resubmission includes those extra fixes that
need backports too:

    https://gcc.gnu.org/ml/gcc-patches/2020-02/msg01253.html