https://issues.dlang.org/show_bug.cgi?id=13485

          Issue ID: 13485
           Summary: FP wrong-code with -O
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: DMD
          Assignee: nobody@puremagic.com
          Reporter: ilyayaroshenko@gmail.com

Test https://github.com/D-Programming-Language/dmd/pull/3992

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