On 11/29/2013 01:36 PM, Richard Biener wrote: > Note that we (SUSE/AMD) sofar think we can go an easier route, not > adding a real backend that targets HSAIL/BRIG but instead use a > custom GIMPLE SSA -> HSAIL/BRIG translator (including a SSA > based register allocator). Which if course simplifies driving this a bit > as we don't need to write/read any GIMPLE. > > The idea is of course that the "highlevel" target languages, being it > HSAIL/BRIG or PTX run through another compiler + optimizer anyway, > so machine specific optimization is not necessary (fingers crossing...). > > Not sure if anybody announced it yet (but gcc-cvs readers may have > noticed), there is a 'hsa' branch in svn covering work done sofar > (see gcc/README.hsa for how to use it).
That's also an interesting idea. Did you resurrect the gimple-backend branch that I think existed a while ago? I'm not sure ptx is really high-level enough for that approach to work well though. And gimple looks different for x86 and ptx due to the use of address spaces, so I have doubts whether such an approach would be suitable. Bernd
