From Muchnick's Advanced Compiler Design and Implementation:
"To determine which variables are live at each point in a flowgraph, we
perform a backward data-flow analysis"
Previously, we were walking the blocks forwards and updating the livein and
then the liveout. However, the livein calculation depends on the liveout
and the liveout depends on the successor blocks. The net result is that it
takes one full iteration to go from liveout to livein and then another
full iteration to propagate to the predecessors. This works out to an
O(n^2) computation where n is the number of blocks. If we run things in
the other order, it's O(nl) where l is the maximum loop depth which is
practically bounded by 3.
In b2c6ba0c4b, we made this same change in
the FS backend to great effect. Might as well keep it consistent and make
the same change for vec4. Also, this took the time to run the test:
ES31-CTS.arrays_of_arrays.InteractionFunctionCalls1
from 6:49.62 to 3:31.40 on Timothy Arceri's machine.
Reviewed-by: Matt Turner <mattst88@gmail.com>
gen8 had some special restrictions which don't seem to carry over to gen9.
Quoting the spec for SKL:
"The Z_Height and Z_Width values must equal those present in
3DSTATE_DEPTH_BUFFER incremented by one."
This fixes nothing in piglit (and regresses nothing).
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
This is always 0 - only brw_workaround_depthstencil_alignment ever sets
it, and that doesn't run on Gen6+. My initial Broadwell depth state
commit had this mistake.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
We already recognize min(max(a, 0.0), 1.0) as a saturate, but neglected
this variant (which is also handled by the GLSL IR pass).
shader-db results on Broadwell:
total instructions in shared programs: 7363046 -> 7362788 (-0.00%)
instructions in affected programs: 11928 -> 11670 (-2.16%)
helped: 64
HURT: 0
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
The brw_create_nir function takes a GLSL or ARB shader and turns it into a
NIR shader. The guts of the optimization and lowering code is now split
into a new brw_process_shader function.
The thread counts and URB information are all speculative numbers that were
based on some CHV numbers at the time.
v2:
Originally this patch had PCI IDs. I've moved that to a new patch at the end of
the series.
Remove is_cherryview hack.
Add PCI ids. These match the ones defined in the kernel. The only one tested by
us is 0x0a84.
Capitalize the hex string (Mark)
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Tested-by: "Lecluse, Philippe" <Philippe.Lecluse@intel.com>
Reviewed-by: Mark Janes <mark.a.janes@intel.com>
Commit b765119c changed the default value of all the counter bits to
64. However, older hardware only has 32 counter bits.
This has only been build-tested. We don't have any tests that verify
the advertised value against implementation behavior, so I don't know
what additional testing could be done.
NOTE: It appears that many Gallium drivers (at least r300 and i915g)
have the same problem, but I don't see a way for the state-tracker to
determine the counter size. Marek says, "For Gallium, a new PIPE_CAP or
new get_xxx_param function will be needed."
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
From Muchnick's Advanced Compiler Design and Implementation:
"To determine which variables are live at each point in a flowgraph, we
perform a backward data-flow analysis"
Previously, we were walking the blocks forwards and updating the livein and
then the liveout. However, the livein calculation depends on the liveout
and the liveout depends on the successor blocks. The net result is that it
takes one full iteration to go from liveout to livein and then another
full iteration to propagate to the predecessors. This works out to an
O(n^2) computation where n is the number of blocks. If we run things in
the other order, it's O(nl) where l is the maximum loop depth which is
practically bounded by 3.
On my HSW desktop, one particular shadertoy test gets a 20% improvement in
compile times:
N Min Max Median Avg Stddev
x 10 15.965 16.884 16.026 16.1822 0.34736846
+ 10 12.813 13.052 12.876 12.8891 0.06913666
Difference at 95.0% confidence
-3.2931 +/- 0.235316
-20.3501% +/- 1.45417%
(Student's t, pooled s = 0.250444)
Reviewed-by: Matt Turner <mattst88@gmail.com>
This is based on Kenneth's patch to delete 'most of the IR'. Due to
linker changes to clone variables, we can now free all of IR.
Saves 58MB of memory when replaying a Dota 2 trace on Broadwell.
Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: mesa-stable@lists.freedesktop.org
This increases memory pressure during linking but makes it easier
for backend to free IR after it is not needed anymore.
v2: use resource list as ralloc context in case of relink (Kenneth)
Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: mesa-stable@lists.freedesktop.org
Start trimming the fat from intel_batchbuffer.c. First by moving the set
of routines for emitting PIPE_CONTROLS (along with the lore concerning
hardware workarounds) to a separate brw_pipe_control.c
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This caused us to always free the pipe_surface for the renderbuffer.
The subsequent call to st_update_renderbuffer_surface() would typically
just recreate it. Remove the call to pipe_surface_release() and let
st_update_renderbuffer_surface() take care of freeing the old surface
if it needs to be replaced (because of change to mipmap level, etc).
This can save quite a few calls to pipe_context::create_surface() and
surface_destroy().
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
Fixes the following build issue, when building without libudev.
CCLD libGL.la
./.libs/libglx.a(dri2_glx.o): In function `dri2CreateScreen':
src/glx/dri2_glx.c:1186: undefined reference to `loader_open_device'
collect2: ld returned 1 exit status
CCLD libEGL.la
Undefined symbols for architecture x86_64:
"_loader_open_device", referenced from:
_dri2_initialize_x11_dri2 in libegl_dri2.a(platform_x11.o)
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91077
Signed-off-by: Julien Isorce <j.isorce@samsung.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
1000 ms is an extreme value for typical interactive loads. A large
cache has some disadvantages. Search for reusable BOs can take a long
time and memory might get exhausted.
Let's be rather conservative and use half of the old value,
500ms. This is beneficial to some loads on my test system and there
are no regressions.
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This is the basic granularity for BO allocations. The alignment also
helps with BO reuse by the cached bufmgr.
This results in a huge 45% speedup in Metro 2033 Redux on my test
system. The game relies on buffer orphaning with very small buffers
(hundreds of bytes in size) and that did not work efficiently
before. This change may also affect other applications and games.
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Matt, Jason, and I haven't found this useful in a long time.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
It returns a new value for each sample in the TLB. We've already avoided
trying to get the same index's color multiple times at the vc4_program.c
level, so we're not losing anything by doing this.
Chad Versace