[Bug target/96786] New: rs6000: We output the wrong .machine for -mcpu=7450

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96786

            Bug ID: 96786
           Summary: rs6000: We output the wrong .machine for -mcpu=7450
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: segher at gcc dot gnu.org
  Target Milestone: ---

Reported by Sergei in
https://sourceware.org/bugzilla/show_bug.cgi?id=26522

This happens since gcc.gnu.org/g:2d94f7dea9c7 (but that is just what
triggered it, not the bug itself), so on GCC 10 and later.