[Bug rtl-optimization/64156] Subversion id 218266 breaks the big-endian 64-bit PowerPC build (wilco.dijkstra@arm.com's mod to ira-costs.c)

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64156

--- Comment #2 from Michael Meissner <meissner at gcc dot gnu.org> ---
Note, the fix proposed in PR64151 DOES NOT work on the PowerPC, so it may be a
dup in terms of what change broke the build, but the potential fix needs more
analysis.