FWIW opencl explicit conversion instructions have optional rounding mode modifiers.
Roland Am 13.11.2014 um 21:19 schrieb Jose Fonseca: > 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 > https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.freedesktop.org_mailman_listinfo_mesa-2Ddev&d=AAIGaQ&c=Sqcl0Ez6M0X8aeM67LKIiDJAXVeAw-YihVMNtXt-uEs&r=Vjtt0vs_iqoI31UfJxBl7yv9I2FeiaeAYgMTLKRBc_I&m=5I_PKJFWlfqxJa2pURZQFykxOixuGPmVNdNc0FEBojM&s=cacpp7IDyYxBIzOO6UYU6IzVdrr6EoyBV66p1rS2Vu0&e= > > _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
