[LLVMdev] Global constructors "get lost" when transforming bitcode files

[Reid Kleckner]

On Thu, Jul 3, 2014 at 10:06 AM, Jonas Wagner <jonas.wagner at epfl.ch> wrote:
>
> The llvm-dis/llvm-as operation should be a no-op, yet the global_ctors get
> lost in the process. This happens also with other operations that affect
> global_ctors, e.g., with "opt -insert-gcov-profiling".
>

This isn't strictly true.  Deserializing old bitcode will auto-upgrade it.
 In this case, it will be auto-upgraded to the 3-field form of
llvm.global_ctors.
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