[llvm-bugs] [Bug 37390] New: -reassociate runs forever

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=37390

            Bug ID: 37390
           Summary: -reassociate runs forever
           Product: new-bugs
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: mikael.holmen at ericsson.com
                CC: llvm-bugs at lists.llvm.org

Created attachment 20274
  --> https://bugs.llvm.org/attachment.cgi?id=20274&action=edit
reproducer

Running
opt -reassociate tr15989.ll -o - -S

never finish.

The input is very similar to the one in
 https://bugs.llvm.org/show_bug.cgi?id=30818

but in this new case we also refer to one of the values produced in the dead
basic block in a live basic block.

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