[llvm-bugs] [Bug 35575] New: [Register coalescer] Assertion `!empty() && "Call to beginIndex() on empty range."' failed

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=35575

            Bug ID: 35575
           Summary: [Register coalescer]  Assertion `!empty() && "Call to
                    beginIndex() on empty range."' failed
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Register Allocator
          Assignee: unassignedbugs at nondot.org
          Reporter: paulsson at linux.vnet.ibm.com
                CC: llvm-bugs at lists.llvm.org

Created attachment 19530
  --> https://bugs.llvm.org/attachment.cgi?id=19530&action=edit
reduced testcase

Running pass 'Simple Register Coalescing' on function '@main'

bin/llc -mtriple=s390x-linux-gnu -mcpu=z13 tc_coalescer.ll
-disable-machine-licm

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