[PATCH] Make assert in gimple_phi_arg more strict

[Tom de Vries]

On 07/20/2017 12:05 PM, Richard Biener wrote:
> I've used the following to only init the PHI node up to nargs, not
> capacity (but still consistently zero things).  Currently
> bootstrapping/testing on x86_64-unknown-linux-gnu (plus the adjusted
> assert of course).
> 
> I think it's slightly cleaner than adjusting nargs if it works out well.
> 

Agreed.

> Sorry for duplicating work here.

Np. I also did't like the adjusting nargs solution much, but had no 
clear idea on how to do it better.

Thanks,
- Tom