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

[James Molloy via cfe-commits]

Evidently not, at least not completely. I see codegen differences with this
patch (and at least one significant improvement).

James
On Fri, 18 Dec 2015 at 16:31, Joerg Sonnenberger via cfe-commits <
cfe-commits at lists.llvm.org> wrote:

> On Fri, Dec 18, 2015 at 03:59:03PM +0000, James Molloy via cfe-commits
> wrote:
> > This is about the standard generic optimizer flags. Currently when using
> > -flto, the backend behaves always as if "-O2" were passed (because this
> is
> > the default codegen optimization level inside the gold plugin and it's
> > never overridden!). So CodeGenOpt::Aggressive is never picked, and that
> can
> > significantly change the backend's behaviour.
>
> I thought we moved to per-function optimissation attributes?
>
> Joerg
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