Commit Graph

62055 Commits

Author SHA1 Message Date
José Fonseca
2de70fe23f mapi/glapi: Use ElementTree instead of libxml2.
It is quite hard to meet the dependency of the libxml2 python bindings
outside Linux, and in particularly on MacOSX; whereas ElementTree is
part of Python's standard library.  ElementTree is more limited than
libxml2: no DTD verification, defaults from DTD, or XInclude support,
but none of these limitations is serious enough to justify using
libxml2.

In fact, it was easier to refactor the code to use ElementTree than to
try to get libxml2 python bindings.

In the process, gl_item_factory class was refactored so that there is
one method for each kind of object to be created, as it simplifies
things substantially.

I confirmed that precisely the same output is generated for GL/GLX/GLES.

v2: Remove m4/ax_python_module.m4 as suggested by Matt Turner.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
2014-03-26 13:51:32 +00:00
José Fonseca
b761dfa0c3 mapi/glapi: Remove glX_doc.py.
As suggested by Ian Romanick, given it's no longer used.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
2014-03-26 12:32:57 +00:00
Christian König
d117ddbe31 st/mesa: fix sampler view handling with shared textures v4
Release the references to the sampler views before
destroying the pipe context.

v2: remove TODO and unrelated change
v3: move to st_texture.[ch], rename callback, add comment
v4: fix rebase mess up and add further cleanups

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Cc: "10.0 10.1" <mesa-stable@lists.freedesktop.org>
2014-03-26 12:06:43 +01:00
Roland Scheidegger
3b421daf32 gallivm: fix no-op n:n lp_build_resize()
This can get called in some circumstances if both src type and dst type
have same width (seen with float32->unorm32). While this particular case
was bogus anyway let's just fix that as it can work trivially (due to the
way it was called it actually worked anyway apart from the assert).

Reviewed-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
2014-03-26 01:44:23 +01:00
Kevin Rogovin
fe635d51ff i965: For fast color clears, only check the color of live channels.
When deciding if a clear color is suitable for fast clear,
take into account if a color channel is active in the
buffer format.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
2014-03-25 15:34:28 -07:00
Kenneth Graunke
ee4484be3d i965: Set Broadwell MOCS values everywhere it's possible.
This patch introduces two pre-canned MOCS values: BDW_MOCS_WB
(write-back, all caches) and BDW_MOCS_WT (write-through, all caches).

We use write-through caching for render targets, and write-back for
all other data.  (At least on Haswell, I believe write-back LLC/eLLC
didn't work for scan-out buffers, while write-through did.)

No performance analysis has been done on the impact of this patch.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Acked-by: Eric Anholt <eric@anholt.net>
2014-03-25 15:14:08 -07:00
Kenneth Graunke
1afe335925 mesa: In core profile, refuse to draw unless a VAO is bound.
Core profile requires a non-default VAO to be bound.  Currently, calls
to glVertexAttribPointer raise INVALID_OPERATION unless a VAO is bound,
and we never actually get any vertex data set.  Trying to draw without
any vertex data can only cause problems.  In i965, it causes a crash.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=76400
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Cc: mesa-stable@lists.freedesktop.org
2014-03-25 15:13:49 -07:00
Ilia Mirkin
29bcc73d4d Revert "build: llvm libs may not be in system search path, add rpath"
This reverts commit d9b983519c.

Unfortunately it seems like rpath is evaluated before LD_LIBRARY_PATH,
so this breaks e.g. steam, as well as any other user of that env var,
if the llvm path happens to be where other libs also reside.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=76082
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
2014-03-25 17:18:46 -04:00
Chris Forbes
4002daf095 Revert "mesa: Fix format matching checks for GL_INTENSITY* internalformats."
This reverts commit 40d7b51953.
2014-03-26 10:06:10 +13:00
Brian Paul
64278b36d6 mesa: move GLbitfield any_valid_stages declaration before code
To fix MSVC build.
2014-03-25 13:33:10 -06:00
Ian Romanick
c4cec40883 glsl: Clean up "unused parameter" warnings
../../src/glsl/ir_constant_expression.cpp:486:1: warning: unused parameter 'variable_context' [-Wunused-parameter]
../../src/glsl/ir_constant_expression.cpp:1633:1: warning: unused parameter 'variable_context' [-Wunused-parameter]
../../src/glsl/ir_constant_expression.cpp:1752:1: warning: unused parameter 'variable_context' [-Wunused-parameter]
../../src/glsl/ir_constant_expression.cpp:1761:1: warning: unused parameter 'variable_context' [-Wunused-parameter]
../../src/glsl/ir_constant_expression.cpp:1769:1: warning: unused parameter 'variable_context' [-Wunused-parameter]

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
2014-03-25 12:09:36 -07:00
Ian Romanick
f3ab987b70 glsl: Minor clean ups in constant_referenced
These could probably be squashed into one of the previous commits.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
2014-03-25 12:09:36 -07:00
Ian Romanick
6429d6276d glsl: Remove ir_dereference::constant_referenced
All of the functionality is implemented in a private function in the one
file where it is used.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
2014-03-25 12:09:36 -07:00
Ian Romanick
bb0d6db974 glsl: Fold implementation of ir_dereference_array::constant_referenced into wrapper
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
2014-03-25 12:09:36 -07:00
Ian Romanick
35bf94f901 glsl: Fold implementation of ir_dereference_record::constant_referenced into wrapper
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
2014-03-25 12:09:36 -07:00
Ian Romanick
b66319b006 glsl: Fold implementation of ir_dereference_variable::constant_referenced into wrapper
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
2014-03-25 12:09:36 -07:00
Ian Romanick
14f0faacb6 glsl: Add wrapper function that calls ir_dereference::constant_referenced
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
2014-03-25 12:09:36 -07:00
Ian Romanick
c11c7e4f01 glsl: Group all of the constant_referenced functions together
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
2014-03-25 12:09:36 -07:00
Gwenole Beauchesne
3bd65dc8a1 i965: fix dma_buf import with non-zero offset.
Fix eglCreateImage() from a packed dma_buf surface with a non-zero offset
to pixels data. In particular, this fixes support for planar YUV surfaces
when they are individually mapped on a per-plane basis, i.e. when the
OES_EGL_image_external is not used and user application wants to use its
own shader code for composition, or processing on individual plane (OCL).

Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2014-03-25 18:56:41 +01:00
Gregory Hainaut
1c29068074 mesa/sso: Implement ValidateProgramPipeline
Implementation note:
I don't use context for ralloc (don't know how).

The check on PROGRAM_SEPARABLE flags is also done when the pipeline
isn't bound.  It doesn't make any sense in a DSA style API.

Maybe we could replace _mesa_validate_program by
_mesa_validate_program_pipeline.  For example we could recreate a dummy
pipeline object.  However the new function checks also the
TEXTURE_IMAGE_UNIT number not sure of the impact.

V2:
Fix memory leak with ralloc_strdup
Formatting improvement

V3 (idr):
* Actually fix the leak of the InfoLog. :)
* Directly generate logs in to gl_pipeline_object::InfoLog via
  ralloc_asprintf isntead of using a temporary buffer.
* Split out from previous uber patch.
* Change spec references to include section numbers, etc.
* Fix a bug in checking that a different program isn't active in a stage
  between two stages that have the same program.  Specifically,

 if (pipe->CurrentVertexProgram->Name == pipe->CurrentGeometryProgram->Name &&
     pipe->CurrentGeometryProgram->Name != pipe->CurrentVertexProgram->Name)

should have been

 if (pipe->CurrentVertexProgram->Name == pipe->CurrentFragmentProgram->Name &&
     pipe->CurrentGeometryProgram->Name != pipe->CurrentVertexProgram->Name)

v4 (idr): Rework to use CurrentProgram array in loops.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2014-03-25 10:25:26 -07:00
Gregory Hainaut
95426b28ac mesa/sso: Add _mesa_sampler_uniforms_pipeline_are_valid
This is much like _mesa_sampler_uniforms_are_valid, but it operates
across an entire pipeline object.

This function differs from _mesa_sampler_uniforms_are_valid in that it
directly creates the gl_pipeline_object::InfoLog instead of writing to
some temporary buffer.

This was originally included in another patch, but it was split out by
Ian Romanick.

v2 (idr): Fix the loop bounds.  shProg isn't an array, so
ARRAY_SIZE(shProg) was 1, so only the vertex program was validated.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2014-03-25 10:25:26 -07:00
Gregory Hainaut
aa46ad26b1 mesa/sso: Add gl_pipeline_object::InfoLog support
V2 (idr):
* Keep the behavior of other info logs in Mesa: and empty info log
  reports a GL_INFO_LOG_LENGTH of zero.
* Use a NULL pointer to denote an empty info log.
* Split out from previous uber patch.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2014-03-25 10:25:26 -07:00
Gregory Hainaut
658eaa3229 mesa/sso: Implement GL_PROGRAM_PIPELINE_BINDING for glGet
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2014-03-25 10:25:26 -07:00
Gregory Hainaut
9e9fac4714 mesa/sso: Implement _mesa_BindProgramPipeline
Test become green in piglit:

The updated ext_transform_feedback-api-errors:useprogstage_noactive useprogstage_active bind_pipeline
arb_separate_shader_object-GetProgramPipelineiv
arb_separate_shader_object-IsProgramPipeline

For the moment I reuse Driver.UseProgram but I guess it will be better
to create a UseProgramStages functions. Opinion is welcome

V2: formatting & rename

V3 (idr):
* Change spec references to core OpenGL versions instead of issues in the
  extension spec.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2014-03-25 10:25:25 -07:00
Gregory Hainaut
78578b7599 mesa/sso: Implement _mesa_UseProgramStages
Now arb_separate_shader_object-GetProgramPipelineiv should pass.

V3 (idr):
* Change spec references to core OpenGL versions instead of issues in
  the extension spec.
* Split out from previous uber patch.

v4 (idr): Use _mesa_has_geometry_shaders in _mesa_UseProgramStages to
detect availability of geometry shaders.

v5 (idr): Whitespace cleanup, use _mesa_lookup_shader_program_err
instead of open-coding it again, and update some comments at the end of
_mesa_UseProgramStages.  All suggested by Eric.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2014-03-25 10:25:25 -07:00
Gregory Hainaut
4caa9db71c mesa/sso: Add gl_pipeline_object parameter to _mesa_use_shader_program
Extend use_shader_program to support a different target. Allow to reuse the
function to update the pipeline state. Note I bypass the flush when target
isn't current. Maybe it would be better to create a new UseProgramStages
driver function

This was originally included in another patch, but it was split out by
Ian Romanick.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2014-03-25 10:25:25 -07:00
Gregory Hainaut
de4f85f52d meta/sso: Update meta to save and restore SSO state.
save and restore _Shader/Pipeline binding point. Rational we don't want any
conflict when the program will be unattached.

V2: formatting improvement

V3 (idr):
* Build fix.  The original patch added calls to _mesa_use_shader_program
  with 4 parameters, but the fourth parameter isn't added to that
  function until a much later patch.  Just drop that parameter for now.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2014-03-25 10:25:25 -07:00
Gregory Hainaut
c03477050a mesa/sso: rename Shader to the pointer _Shader
Basically a sed but shaderapi.c and get.c.
get.c => GL_CURRENT_PROGAM always refer to the "old" UseProgram behavior
shaderapi.c => the old api stil update the Shader object directly

V2: formatting improvement

V3 (idr):
* Rebase fixes after a block of code was moved from ir_to_mesa.cpp to
  shaderapi.c.
* Trivial reformatting.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2014-03-25 10:25:25 -07:00
Gregory Hainaut
b2bddaf7a0 mesa/sso: replace Shader binding point with _Shader
To avoid NULL pointer check a default pipeline object is installed in
_Shader when no program is current

The spec say that UseProgram/UseShaderProgramEXT/ActiveProgramEXT got an
higher priority over the pipeline object. When default program is
uninstall, the pipeline is used if any was bound.

Note: A careful rename need to be done now...

V2: formating improvement

V3 (idr):
* Build fix.  The original patch added calls to _mesa_use_shader_program
  with 4 parameters, but the fourth parameter isn't added to that
  function until a much later patch.  Just drop that parameter for now.
* Trivial reformatting.
* Updated comment of gl_context::_Shader

v4 (idr): Reformat spec quotations to look like spec quotations.  Update
comments describing what gl_context::_Shader can point to.  Bot
suggested by Eric.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2014-03-25 10:25:25 -07:00
José Fonseca
b995a010e6 llvmpipe: Simplify vertex and geometry shaders.
Eliminate lp_vertex_shader, as it added nothing over draw_vertex_shader.

Simplify lp_geometry_shader, as most of the incoming state is unneeded.
(We could also just use draw_geometry_shader if we were willing to peek
inside the structure.)

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Zack Rusin <zackr@vmware.com>
2014-03-25 12:54:39 +00:00
José Fonseca
ee89432a47 draw: Duplicate TGSI tokens in draw_pipe_pstipple module.
As done in draw_pipe_aaline and draw_pipe_aapoint modules.

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Zack Rusin <zackr@vmware.com>
Cc: "10.0 10.1" <mesa-stable@lists.freedesktop.org>
2014-03-25 12:54:39 +00:00
Alexander von Gluck IV
7683fce878 haiku: Fix build through scons corrections and viewport fixes
* Add HAVE_PTHREAD, we do have pthread support wrappers now for
  non-native Haiku threaded applications.
* Viewport changed behavior recently breaking the build.
  We fix this by looking at the gl_context ViewportArray
  (Thanks Brian for the idea)

Acked-by: Brian Paul <brianp@vmware.com>
2014-03-24 19:01:53 -05:00
Kenneth Graunke
eccad18bd8 i965: For color clears, only disable writes to components that exist.
The SIMD16 replicated FB write message only works if we don't need the
color calculator to mask our framebuffer writes.  Previously, we bailed
on it if color_mask wasn't <true, true, true, true>.  However, this was
needlessly strict for formats with fewer than four components - only the
components that actually exist matter.

WebGL Aquarium attempts to clear a BGRX texture with the ColorMask set
to <true, true, true, false>.  This will work perfectly fine with the
replicated data message; we just bailed unnecessarily.

Improves performance of WebGL Aquarium on Iris Pro (at 1920x1080) by
abound 50%, and Bay Trail (at 1366x768) by over 70% (using Chrome 24).

v2: Use _mesa_format_has_color_component() to properly handle ALPHA
    formats (and generally be less fragile).

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Tested-by: Dylan Baker <baker.dylan.c@gmail.com>
2014-03-24 14:46:05 -07:00
Kenneth Graunke
630bf288de mesa: Skip clearing color buffers when color writes are disabled.
WebGL Aquarium in Chrome 24 actually hits this.

v2: Move to core Mesa (wisely suggested by Ian); only consider
    components which actually exist.

v3: Use _mesa_format_has_color_component to determine whether components
    actually exist, fixing alpha format handling.

v4: Add a comment, as requested by Brian.  No actual code changes.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Tested-by: Dylan Baker <baker.dylan.c@gmail.com>
2014-03-24 14:45:03 -07:00
Kenneth Graunke
92234b1b2a mesa: Introduce a _mesa_format_has_color_component() helper.
When considering color write masks, we often want to know whether an
RGBA component actually contains any meaningful data.  This function
provides an easy way to answer that question, and handles luminance,
intensity, and alpha formats correctly.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Tested-by: Dylan Baker <baker.dylan.c@gmail.com>
2014-03-24 14:38:51 -07:00
Eric Anholt
0d99aef6c8 i965: Fix compiler warning about signed/unsigned.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
2014-03-24 11:16:38 -07:00
Eric Anholt
4545ec1691 i965/gen8: Change the winsys MSAA blits from blorp to meta.
This gets us equivalent code paths on BDW and pre-BDW, except for stencil
(where we don't have MSAA stencil resolve code yet)

Improves MSAA-forced citybench by 7.94496% +/- 2.38429% (n=16).  Reduces
DRI2 MSAA glxgears performance by -12.3559% +/- 1.52845% (n=9).

v2: Move the new meta code to brw_meta_updownsample.c, name it
    brw_meta_updownsample(), add a comment about
    intel_rb_storage_first_mt_slice(), and rename that function and move
    the RB generation into it (review ideas by Ken).
v3: Fix 2 src vs dst pasteos in previous change.
v4: Skip this path pre-gen8 for now, until we can analyze the glxgears
    performance delta some more.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
2014-03-24 11:15:05 -07:00
Eric Anholt
7ccb26fdec mesa: Stop skipping the FinishRenderTexture calls for winsys FBOs.
Now that BindRenderbufferTexImage() is a thing that drivers can do, winsys
FBOs *can* have NeedsFinishRenderTexture set.

v2: Keep the short-circuit for non-BindRenderbufferTexImage() drivers
    (review by Ken).

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
2014-03-24 11:15:04 -07:00
Eric Anholt
dd4b226184 i965: Skip reallocating the private MSAA miptree, unless it's resized.
Even if the singlesample_mt got reopened from DRI due to
pageflipping/buffer swapping, our private miptree shouldn't need any
changes.

Improves performance of a little swapbuffers-loving microbenchmark with
MSAA forced on, by 1.2371% +/- 0.624802% (n=102)

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
2014-03-24 11:15:04 -07:00
Eric Anholt
44e944c87c i965: Simplify the no-reopening-the-winsys-buffer tests.
The formatting was weird, and the tests were duplicated, and it is
guaranteed that mt->region exists.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
2014-03-24 11:15:04 -07:00
Eric Anholt
e07e7e9f89 i965: Don't forget to free the old singlesample_mt.
Fixes a memory leak with MSAA winsys buffers since my move of
singlesample_mt to the rb in 4e0924c5de

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
2014-03-24 11:15:04 -07:00
Eric Anholt
41033509f2 i965: Add an env var for forcing window system MSAA.
Sometimes it would be nice to benchmark some app with MSAA versus not, but
it doesn't offer the controls you want.  Just provide a handy knob to
force the issue.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
2014-03-24 11:15:04 -07:00
Matt Turner
764e25d79d i965/vec4: Eliminate dead writes to the flag register.
For each write, search previous instructions for unread writes to the
flag register and remove them. Note that this will not eliminate the
last unread write.

total instructions in shared programs: 788074 -> 788004 (-0.01%)
instructions in affected programs:     4930 -> 4860 (-1.42%)

Reviewed-by: Eric Anholt <eric@anholt.net>
2014-03-24 11:06:26 -07:00
Matt Turner
9cd51bb0c4 i965/vec4: Eliminate writes that are never read.
With an awful O(n^2) algorithm that searches previous instructions for
dead writes.

total instructions in shared programs: 805582 -> 788074 (-2.17%)
instructions in affected programs:     144561 -> 127053 (-12.11%)

Reviewed-by: Eric Anholt <eric@anholt.net>
2014-03-24 11:06:26 -07:00
Matt Turner
1b8f143a23 i965/vec4: Factor code out of DCE into a separate function.
Will be reused in the next commit.

Reviewed-by: Eric Anholt <eric@anholt.net>
2014-03-24 11:06:26 -07:00
Matt Turner
9630ba6c6e i965/vec4: Let dead code eliminate trim dead channels.
That is, modify

   mad dst, a, b, c

to be

   mad dst.xyz, a, b, c

if dst.w is never read.

total instructions in shared programs: 811869 -> 805582 (-0.77%)
instructions in affected programs:     168287 -> 162000 (-3.74%)

Reviewed-by: Eric Anholt <eric@anholt.net>
2014-03-24 11:06:26 -07:00
Matt Turner
dc0f5099fa i965/vec4: Track live ranges per-channel, not per vgrf.
Will be squashed with the next patch.

Reviewed-by: Eric Anholt <eric@anholt.net>
2014-03-24 11:06:26 -07:00
Matt Turner
89ccd11eeb i965/vec4: Don't dead code eliminate instructions writing the flag.
A future patch adds support for removing dead writes to the flag
register. This patch simplifies the logic until then.

total instructions in shared programs: 811813 -> 811869 (0.01%)
instructions in affected programs:     3378 -> 3434 (1.66%)

Reviewed-by: Eric Anholt <eric@anholt.net>
2014-03-24 11:06:26 -07:00
Matt Turner
3a12f50f9c i965/vec4: Preparatory clean up of dead_code_eliminate().
Reviewed-by: Eric Anholt <eric@anholt.net>
2014-03-24 11:06:26 -07:00
Matt Turner
10dd6eca89 i965/vec4: Add is_null() method to dst_reg.
Reviewed-by: Eric Anholt <eric@anholt.net>
2014-03-24 11:06:25 -07:00