[llvm-bugs] [Bug 41412] New: AVX512 register allocator thrashing

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=41412

            Bug ID: 41412
           Summary: AVX512 register allocator thrashing
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: slandden at gmail.com
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org

The register allocator is thrashing registers when doing AVX512 loads with
duff's device.

https://zig.godbolt.org/z/a9wxiu


It repeatedly "bumps" registers up one number.

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