On 04/03/13 06:11, Armin K. wrote: > On 03/03/2013 09:04 PM, Armin K. wrote: >> Hello everyone, >> >> First, I am aware that ArchLinux is against patching packages to >> implement some features, but this might be worth the effort. >> >> Tom Stellard of AMD has announced a R600 backend patch against LLVM 3.2 >> few days ago [1]. It's basically his repository (llvm-amdgpu-snapshot) >> diffed against upstream LLVM (llvm). >> >> By applying the patch to ArchLinux LLVM package, one could benefit from >> enabling Mesa to link against LLVM shared library. Doing so, space would >> be saved and so the memory at runtime, too (I guess since it will use >> shared mappings). >> >> I've done some work regarding that. I've managed to split libLLVM-3.2.so >> from llvm package and put it into libllvm package. >> >> The package is a bit big though - the shared library contains all (~100) >> static libraries linked into one single library. >> >> The result is like this: >> >> Targets (1): libllvm-3.2-5 >> >> Total Installed Size: 21.77 MiB >> >> Building MesaLib against shared libLLVM-3.2.so saves space drastically. >> For all MesaLib produced packages, the output is like this one: >> >> Targets (6): ati-dri-9.1-2 intel-dri-9.1-2 mesa-9.1-2 >> mesa-libgl-9.1-2 nouveau-dri-9.1-2 svga-dri-9.1-2 >> >> Total Installed Size: 82.13 MiB >> Net Upgrade Size: -282.07 MiB >> >> 260 MB saved ... Looks nice to me. >> >> R600 backend will be part of LLVM 3.3 anyways, and this can be used in >> the future without patching anything. >> >> I am attaching patches for llvm and mesa PKGBUILDs to incorporate these >> changes. Do as you may please. >> >> If someone is interested in forwarding this to -dev-public list it would >> be nice. >> >> Have a nice evening. >> >> (As a side note, somehow llvm tarball sha256sum was wrong when I >> downloaded it). >> >> [1] http://lists.freedesktop.org/archives/mesa-dev/2013-March/035561.html > > Hm, it seems that attachments are blocked > > mesa.patch http://paste.debian.net/plainh/638c2e73 > llvm.patch http://paste.debian.net/plainh/bd11c4da > > As another side note, the 0003 patch available on Tom Stellard's web > site fails to apply with "patch already applied". > This is known. I understand we are waiting for LLVM-3.3.
