[llvm-bugs] [Bug 36264] New: [SelectionDAG] HandleMergeInputChains gets stuck in infinite loop in calls to AddChains()

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=36264

            Bug ID: 36264
           Summary: [SelectionDAG] HandleMergeInputChains gets stuck in
                    infinite loop in calls to AddChains()
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Common Code Generator Code
          Assignee: unassignedbugs at nondot.org
          Reporter: paulsson at linux.vnet.ibm.com
                CC: llvm-bugs at lists.llvm.org

Created attachment 19825
  --> https://bugs.llvm.org/attachment.cgi?id=19825&action=edit
reduced testcase

bin/clang -cc1 -triple s390x-ibm-linux -S -target-cpu z13 -w -o out.s -x ir
tc_clang_hang.ll -O3

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