Created attachment 114935 [details] dmesg Civilization 5, with all DLC, causes a GPU crash on recent git (490621f) on Radeon R9 270. The game works perfectly on mesa 10.4.2 from Debian unstable, though. Hardware and kernel are x86-64, but the game (and obviously mesa) is 32-bit. The crash happens when the game is loaded, probably where the map would first get drawn. Mesa was built in a 32-bit chroot and configured with ./configure --prefix=/home/sliedes/local/mesa32 --build=i686-pc-linux-gnu --host=i686-pc-linux-gnu --with-gallium-drivers=radeonsi --with-egl-platforms=drm,x11 --enable-driglx-direct --enable-gles1 --enable-gles2 --enable-glx-tls --enable-texture-float LLVM version is 3.6.0, built in release mode.
Created attachment 114936 [details] R600_DEBUG=ps,vs,gs output from crashing program
Created attachment 114937 [details] Non-crashing debug output from mesa 10.4.2, for comparison
I bisected this down to this commit: ------------------------------------------------------------ commit 30f51f1a1a70bc838d5bed449daff0dd9f2e8ef2 Author: Kenneth Graunke <kenneth@whitecape.org> Date: Wed Oct 22 20:48:21 2014 -0700 glsl: Optimize "if (cond) discard;" to a conditional discard. st_glsl_to_tgsi and ir_to_mesa have handled conditional discards for a long time; the previous patch added that capability to i965. i965 (Haswell) shader-db stats: Without NIR: total instructions in shared programs: 5792133 -> 5776360 (-0.27%) instructions in affected programs: 737585 -> 721812 (-2.14%) helped: 6300 HURT: 68 GAINED: 2 With NIR: total instructions in shared programs: 5787538 -> 5769569 (-0.31%) instructions in affected programs: 767843 -> 749874 (-2.34%) helped: 6522 HURT: 35 GAINED: 6 Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Connor Abbott <cwabbott0@gmail.com> Reviewed-by: Matt Turner <mattst88@gmail.com> Reviewed-by: Eric Anholt <eric@anholt.net> ------------------------------------------------------------ I can also confirm that reverting that commit on top of recent HEAD (4deca127) fixes the issue. I can attach R600_DEBUG=ps,gs,vs output from the offending commit and its parent if you think comparing them is of any use.
I think I do have the same problem. http://www.phoronix.com/forums/showthread.php?116700-HD7850-radeon-oibaf-ppa-Zivilisation-5-crash I do have a hd7850 and I use the oibaf PPA to run the GIT code
(In reply to Sami Liedes from comment #3) > I bisected this down to this commit: > > ------------------------------------------------------------ > commit 30f51f1a1a70bc838d5bed449daff0dd9f2e8ef2 > Author: Kenneth Graunke <kenneth@whitecape.org> > Date: Wed Oct 22 20:48:21 2014 -0700 > > glsl: Optimize "if (cond) discard;" to a conditional discard. > > > > st_glsl_to_tgsi and ir_to_mesa have handled conditional discards for a > > long time; the previous patch added that capability to i965. > > > > i965 (Haswell) shader-db stats: > > > > Without NIR: > > total instructions in shared programs: 5792133 -> 5776360 (-0.27%) > > instructions in affected programs: 737585 -> 721812 (-2.14%) > > helped: 6300 > > HURT: 68 > > GAINED: 2 > > > > With NIR: > > total instructions in shared programs: 5787538 -> 5769569 (-0.31%) > > instructions in affected programs: 767843 -> 749874 (-2.34%) > helped: 6522 > HURT: 35 > GAINED: 6 > > Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> > Reviewed-by: Connor Abbott <cwabbott0@gmail.com> > Reviewed-by: Matt Turner <mattst88@gmail.com> > Reviewed-by: Eric Anholt <eric@anholt.net> > ------------------------------------------------------------ > > I can also confirm that reverting that commit on top of recent HEAD > (4deca127) fixes the issue. > > I can attach R600_DEBUG=ps,gs,vs output from the offending commit and its > parent if you think comparing them is of any use That would be useful.
Created attachment 115007 [details] R600_DEBUG=ps,vs,gs output from last good commit (8eb6c109)
Created attachment 115008 [details] R600_DEBUG=ps,vs,gs output from first bad commit (30f51f1a)
Can you pull the latest version of llvm and mesa and see if the problem still exists?
Tested; cannot reproduce problem with latest mesa (28d9e904) and llvm (r234939).
(In reply to Sami Liedes from comment #9) > Tested; cannot reproduce problem with latest mesa (28d9e904) and llvm > (r234939). Ok. Closing then.
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