http://llvm.org/bugs/show_bug.cgi?id=8360

           Summary: Resolve call to atoi with constant input at compile
                    time.
           Product: libraries
           Version: trunk
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Scalar Optimizations
        AssignedTo: [email protected]
        ReportedBy: [email protected]
                CC: [email protected]


Ran into this while trying to get LLVM to not optimize away my contrived code.
Seems like an easy SimplifyLibCalls opt to implement to get used to transforms. 

Filing this so I don't forget.

atoi("42") -> i32 42

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