[llvm-bugs] [Bug 45539] New: Instcombine hangs indefinitely when optimizing IR

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=45539

            Bug ID: 45539
           Summary: Instcombine hangs indefinitely when optimizing IR
           Product: libraries
           Version: 10.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Scalar Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: pleasantatk at gmail.com
                CC: llvm-bugs at lists.llvm.org

Created attachment 23356
  --> https://bugs.llvm.org/attachment.cgi?id=23356&action=edit
IR reduction

The core LLVM transformation libraries enter an infinite loop in the
instcombine pass while optimizing this IR in -O2 or above.

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