[llvm-testresults] buildbot failure in llvm on build-self-4-mingw32

[Rafael Ávila de Espíndola]

> Rafael, the duplicated CFG edges were used to tell the AsmPrinter
> when it needs to emit a label for a fall-through block. Without them,
> label can go missing.
>
> That's a bit of a hack that it would be nice to get rid of.

Just did. The first patch had a bug for the case of a jump to a label 
immediately next to it (happens in debug).

That was a really "dangerous" hack, other parts of the code have checks 
like "if (bb->succ_size() > 1) {..}".

> /jakob
>

Cheers,
Rafael