https://llvm.org/bugs/show_bug.cgi?id=23681

            Bug ID: 23681
           Summary: Need time builtin access for PPC
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: PowerPC
          Assignee: [email protected]
          Reporter: [email protected]
                CC: [email protected]
    Classification: Unclassified

>From these two patches:

https://gcc.gnu.org/ml/gcc-patches/2012-09/msg01390.html
https://gcc.gnu.org/ml/gcc-patches/2012-08/msg01978.html

there are builtins for accessing the time register which get lowered to the
proper instruction for the architecture (mfspr, mftb).

We should probably implement these.

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