The releases/gcc-9 branch has been updated by Peter Bergner
<berg...@gcc.gnu.org>:

https://gcc.gnu.org/g:066184a282b622ac6880150eb4e42fe57881b606

commit r9-8269-g066184a282b622ac6880150eb4e42fe57881b606
Author: Peter Bergner <berg...@linux.ibm.com>
Date:   Sun Feb 23 18:22:57 2020 -0600

    rs6000: Fix infinite loop building ghostscript and icu [PR93658]
    
    Fix rs6000_legitimate_address_p(), which erroneously marks a valid Altivec
    address as being invalid, which causes LRA's process_address()  to go into
    an infinite loop spilling the same address over and over again.
    Include Mike's earlier commits that fix bugs this patch exposes.
    
        Backport from master
        2020-02-20  Peter Bergner  <berg...@linux.ibm.com>
    
        PR target/93658
        * config/rs6000/rs6000.c (rs6000_legitimate_address_p): Handle VSX
        vector modes.
    
        * gcc.target/powerpc/pr93658.c: New test.

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https://bugs.launchpad.net/bugs/1862053

Title:
  Compiler gets stuck (or extremely slow) on ppc64el

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