https://bugs.llvm.org/show_bug.cgi?id=45134

            Bug ID: 45134
           Summary: clang++ goes into infinite loop when compiling with
                    -O2 -g
           Product: clang
           Version: 10.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: release blocker
          Priority: P
         Component: LLVM Codegen
          Assignee: [email protected]
          Reporter: [email protected]
                CC: [email protected], [email protected],
                    [email protected]

Created attachment 23212
  --> https://bugs.llvm.org/attachment.cgi?id=23212&action=edit
test case

attached testcase causes forever loop in clang++ 10.x, it works ok with 9.x
and if one of -g and -O2 is not used then it works ok too.

clang++ -O2 -pipe -g -c a.cpp

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