[llvm-bugs] [Bug 48232] New: ARM backend: Cannot scavenge register without an emergency spill slot!

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=48232

            Bug ID: 48232
           Summary: ARM backend: Cannot scavenge register without an
                    emergency spill slot!
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Common Code Generator Code
          Assignee: unassignedbugs at nondot.org
          Reporter: pirama at google.com
                CC: danalbert at google.com, kristof.beyls at arm.com,
                    llvm-bugs at lists.llvm.org, srhines at google.com

Created attachment 24186
  --> https://bugs.llvm.org/attachment.cgi?id=24186&action=edit
Reduced repro

Refiling https://github.com/android/ndk/issues/1377 in LLVM bug tracker.

Attached repro fails with the following message:

fatal error: error in backend: Error while trying to spill LR from class GPR:
Cannot scavenge register without an emergency spill slot!

This case was after reduction with creduce.  For the original repro, see
https://github.com/android/ndk/issues/1377.

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