[llvm-bugs] [Bug 31751] New: Compilation not completing for gnomon_engine.cpp of BlastC++

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=31751

            Bug ID: 31751
           Summary: Compilation not completing for gnomon_engine.cpp of
                    BlastC++
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: balarishi.bhogadi at amd.com
                CC: dgregor at apple.com, llvm-bugs at lists.llvm.org
    Classification: Unclassified

Created attachment 17891
  --> https://llvm.org/bugs/attachment.cgi?id=17891&action=edit
Using 'clang++ -c -w gnomon_engine.cpp -O2' compilation is not completed

I have attached the reduced file to reproduce the issue.

Current behavior:
    -O0/-O1: Completed build in ~2 seconds
    -O2/-O3: Building not completed even after 300 seconds

Invocation command:
        clang++ -c -w gnomon_engine.cpp -O2

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