[PATCH 0/2] Require that constraints are used to reference global regs

[Alexander Monakov]

On Mon, 23 Apr 2018, Michael Matz wrote:
> Sooo, hmm, I don't know ;-)  We could try doing a roll backwards and 
> demand explicit dependencies from asms with unknown effects on the few 
> unknown users, though the timing really makes me nervous.  But my gut 
> feeling says to remain (or become again) very conservative with global reg 
> vars (and document that for real then!).

What's the problem with the timing? The code change is proposed for stage 1,
only the doc change is intended for gcc-8.1.

Thanks.
Alexander