I've eliminated our internal dependency on TGSI_OPCODE_CND (by replacing SUB+CMP). So you can commit the change to remove it as far as I'm concerned.
I have mixed feelings about ARR, because the operation it does is essentially an "iround()", i.e., "(int)roundf()", and at least when targeting x86, we can generate better code with the combination. That said neither D3D10, GLSL, or OpenCL C code has built-ins for iround(), so to be of benefit we'd need to do pattern matching. So I'm not sure if it's worth to keep this around just for that... Jose ________________________________________ From: Jose Fonseca Sent: 13 November 2014 13:06 To: Eric Anholt; mesa-dev@lists.freedesktop.org Subject: RE: [Mesa-dev] Removing unused opcodes (TGSI, Mesa IR) Thanks for doing this. It's has been long overdue. Unfortunately we are relying on TGSI_OPCODE_CND/TGSI_OPCODE_ARR internally. I'm also interested in cutting down used opcodes, so I'll try to replace their usage with something else. But until then please hold on to those two patches. The rest looks good AFAICT. Concerning subroutines, we rely on BGNSUB/ENDSUB/CAL extensively. They are quite convenient when translating D3D 9/10 shaders, which also have them. And if one day we need to support recursive subroutines (CUDA 4.0 appears to have them; not sure about OpenCL, but I suppose it's only a matter of time), then they'll be unavoidable, as in-lining subroutines won't work anymore. Jose ________________________________________ From: mesa-dev <mesa-dev-boun...@lists.freedesktop.org> on behalf of Eric Anholt <e...@anholt.net> Sent: 13 November 2014 01:18 To: mesa-dev@lists.freedesktop.org Subject: [Mesa-dev] Removing unused opcodes (TGSI, Mesa IR) This series removes a bunch of unused opcodes, mostly from TGSI. It doesn't go as far as we could possibly go -- while I welcome discussion for future patch series deleting more, I hope that discussion doesn't derail the review process for these changes. I haven't messed with the subroutine stuff, since I don't know what people are planning with that. I also haven't messed with the pack/unpack opcodes in TGSI, since they might be useful for some of the GLSL packing stuff. Testing status: compile-tested ilo/r600/softpipe, touch-tested softpipe. _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.freedesktop.org_mailman_listinfo_mesa-2Ddev&d=AAIGaQ&c=Sqcl0Ez6M0X8aeM67LKIiDJAXVeAw-YihVMNtXt-uEs&r=zfmBZnnVGHeYde45pMKNnVyzeaZbdIqVLprmZCM2zzE&m=KrBch2e5-gJGE_5bIs9RInABCFoKy7me_0oysUie4JI&s=w3G1SjuOy0EbCJjVrC1tDok52z4eMzIiKu63rvxI7SY&e= _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
