[Bug target/88851] New: [9 Regression] SVE Stack clash and r263173 use conflicting registers

[tnfchris at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88851

            Bug ID: 88851
           Summary: [9 Regression] SVE Stack clash and r263173 use
                    conflicting registers
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: tnfchris at gcc dot gnu.org
  Target Milestone: ---
            Target: aarch64*-*-*

When SVE + stack clash protection and the feature introduced in r263173 use the
same r15 as scratch, making both protections invalid when used together.


One register needs to be re-numbered.