[llvm-bugs] [Bug 39058] New: warning: SubRegIndex SystemZ::subreg_h64 and SystemZ::subreg_h32 compose ambiguously as SystemZ::subreg_hh32 or SystemZ::subreg_h32

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=39058

            Bug ID: 39058
           Summary: warning: SubRegIndex SystemZ::subreg_h64 and
                    SystemZ::subreg_h32 compose ambiguously as
                    SystemZ::subreg_hh32 or SystemZ::subreg_h32
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Backend: SystemZ
          Assignee: unassignedb...@nondot.org
          Reporter: franci...@yahoo.com
                CC: llvm-bugs@lists.llvm.org

While building trunk at r342870, I get the following warning:

[2131/7124] Building SystemZGenRegisterInfo.inc...
warning: SubRegIndex SystemZ::subreg_h64 and SystemZ::subreg_h32 compose
ambiguously as SystemZ::subreg_hh32 or SystemZ::subreg_h32

I suspect this is https://llvm.org/r339778.

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