[LLVMbugs] [Bug 259] NEW: CBE gives linkonce functions wrong linkage semantics

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.cs.uiuc.edu/bugs/show_bug.cgi?id=259

           Summary: CBE gives linkonce functions wrong linkage semantics
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: minor
          Priority: P2
         Component: C backend
        AssignedTo: criswell at uiuc.edu
        ReportedBy: criswell at uiuc.edu


When converting a function from LLVM to C, the CBE generates linkonce functions
as inline functions.  However, this does not provide the correct semantics; if
two functions with the same name are converted to C and then linked, the
function bodies (if generated) will conflict, and a link error will occur.

The CBE should declare linkonce functions as weak in C; it will provide the
correct linking semantics, but won't be as efficient in cases where the function
is unreferenced and can be throw away.



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