https://issues.dlang.org/show_bug.cgi?id=24412

          Issue ID: 24412
           Summary: No predefined version for 64bit ?!
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: turkeyman@gmail.com

Surprisingly, I was looking for a version that identifies if the target arch is 64bit, and there's no such thing!

I need to know if the target has 64bit registers and can perform 64bit arithmetic. It's surprising there's nothing that identifies this.

Please add a new predefined version.

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