search for: cbranch

Hi Owen and Vinod, Thanks for sharing the paper! I like the idea a lot. Regarding the paper itself, Vinod, are the consensual branches (e.g., cbranch.ifnone) you mentioned in the paper publicly available in PTX ISA? Owen, could you explain more on the approach of using branch-if-none instructions in your mind? I believe you have lots of great insights, but I don't see how cbranch.ifnone instructions directly solve my issue. The issue I am t...

Hi all, I've been looking into how to implement the more advanced Shader Model 6 reduction operations in radv (and obviously most of the work would be useful for radeonsi too). They're explained in the spec for GL_AMD_shader_ballot at https://www.khronos.org/registry/OpenGL/extensions/AMD/AMD_shader_ballot.txt, but I'll summarize them here. There are two types of operations:

In our experience, as Owen also suggests, a pragma or a language extension can be avoided by a combination of static and dynamic analysis. We prefer this approach in our compiler ;) Regards, Vinod On Sat, Jan 24, 2015 at 12:09 AM, Owen Anderson <resistor at mac.com> wrote: > Hi Jingyue, > > Have you considered using dynamic uniformity checks? In my experience you > can