[PATCH] D15641: [Driver] Pass -O* to the gold plugin via -plugin-opt

[Joerg Sonnenberger via cfe-commits]

On Fri, Dec 18, 2015 at 01:53:58PM +0000, James Molloy wrote:
> The gold plugin understands -O0..-O3, but these are not currently being passed to it.

Is this about generic optimizer flags in the sense of things that get
back to LLVM or about linker-style optimizations?

Joerg