[LLVMbugs] [Bug 12233] dead code elimination does not work

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=12233

Duncan Sands <baldrick at free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |baldrick at free.fr
         Resolution|                            |INVALID

--- Comment #1 from Duncan Sands <baldrick at free.fr> 2012-03-10 14:54:57 CST ---
It would be wrong to remove the function dead_code since it is externally
visible: the object code resulting from compiling optbench.c might be linked
with some other object file that makes use of dead_code.  It is only correct
to remove dead_code when doing link-time optimization, i.e. building the final
executable, but you didn't do link-time optimization.

Note that all uses of dead_code (eg calls) are removed by the optimizers, only
the empty function body remains.

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