[PATCH] D27560: Always run GlobalDCE at O0

[Joerg Sonnenberger via llvm-commits]

On Tue, Dec 13, 2016 at 05:55:55PM -0800, Mehdi Amini via llvm-commits wrote:
> Also, if always_inline is “required” for correctness it should process all the calligraph.

always_inline is required for correctness. One example is a wrapper
function around vfork or setjmp.

Joerg