Quoting Jani Nikula (2018-10-16 13:29:38) > Clang build with UBSAN enabled leads to the following build error: > > drivers/gpu/drm/i915/intel_engine_cs.o: In function `intel_engine_init_execlist': > drivers/gpu/drm/i915/intel_engine_cs.c:411: undefined reference to `__compiletime_assert_411' > > Again, for this to work the code would first need to be inlined and then > constant folded, which doesn't work for Clang because semantic analysis > happens before optimization/inlining. > > Use GEM_BUG_ON() instead of BUILD_BUG_ON(). > > v2: Use is_power_of_2() from log2.h (Chris) > > References: http://mid.mail-archive.com/20181015203410.155997-1-swboyd@xxxxxxxxxxxx > Reported-by: Stephen Boyd <swboyd@xxxxxxxxxxxx> > Cc: Stephen Boyd <swboyd@xxxxxxxxxxxx> > Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx> Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
