Re: [Mesa-dev] [PATCH 1/4] nir/from_ssa: add a flag to not convert everything to SSA

2015-06-25 Thread Jason Ekstrand
On Thu, Jun 25, 2015 at 12:29 PM, Connor Abbott cwabbo...@gmail.com wrote: We already don't convert constants out of SSA, and in our backend we'd like to have only one way of saying something is still in SSA. The one tricky part about this is that we may now leave some undef instructions

[Mesa-dev] [PATCH 1/4] nir/from_ssa: add a flag to not convert everything to SSA

2015-06-25 Thread Connor Abbott
We already don't convert constants out of SSA, and in our backend we'd like to have only one way of saying something is still in SSA. The one tricky part about this is that we may now leave some undef instructions around if they aren't part of a phi-web, so we have to be more careful about