summaryrefslogtreecommitdiffstats
path: root/src/intel
Commit message (Collapse)AuthorAgeFilesLines
* aubinator: add support for aubinating memtrace aubsScott D Phillips2018-01-081-35/+83
| | | | | | | | | Memtrace aubs are similar to classic aubs, with the major difference being how command submission is serialized (as register writes instead of a high-level submit message). Some internal tools generate or consume only memtrace aubs. Reviewed-by: Jordan Justen <[email protected]>
* aubinator: extract aubinator_init() out of the header handler functionScott D Phillips2018-01-081-16/+23
| | | | | | | A later patch will use the aubinator_init() function from the memtrace aub header handler. Reviewed-by: Jordan Justen <[email protected]>
* aubinator: honor --color option when printing the headerScott D Phillips2018-01-081-1/+5
| | | | Reviewed-by: Jordan Justen <[email protected]>
* anv: Allow PMA optimization to be enabled in secondary command buffersAlex Smith2018-01-081-1/+21
| | | | | | | | | | | | | | | | | This was never enabled in secondary buffers because hiz_enabled was never set to true for those. If the app provides a framebuffer in the inheritance info when beginning a secondary buffer, we can determine if HiZ is enabled and therefore allow the PMA optimization to be enabled within the command buffer. This improves performance by ~13% on an internal benchmark on Skylake. v2: Use anv_cmd_buffer_get_depth_stencil_view(). Signed-off-by: Alex Smith <[email protected]> Reviewed-by: Lionel Landwerlin <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* anv: Take write mask into account in has_color_buffer_write_enabledAlex Smith2018-01-051-9/+18
| | | | | | | | | | | | | | | | | | | | If we have a color attachment, but its writes are masked, this would have still returned true. This is inconsistent with how HasWriteableRT in 3DSTATE_PS_BLEND is set, which does take the mask into account. This could lead to PixelShaderHasUAV not being set in 3DSTATE_PS_EXTRA if the fragment shader does use UAVs, meaning the fragment shader may not be invoked because HasWriteableRT is false. Specifically, this was seen to occur when the shader also enables early fragment tests: the fragment shader was not invoked despite passing depth/stencil. Fix by taking the color write mask into account in this function. This is consistent with how things are done on i965. Signed-off-by: Alex Smith <[email protected]> Cc: [email protected] Reviewed-by: Iago Toral Quiroga <[email protected]> Reviewed-by: Lionel Landwerlin <[email protected]>
* anv: Add missing unlock in anv_scratch_pool_allocAlex Smith2018-01-041-1/+3
| | | | | | | | | Fixes hangs seen due to the lock not being released here. Signed-off-by: Alex Smith <[email protected]> Cc: [email protected] Reviewed-by: Lionel Landwerlin <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* i965: Drop support for the legacy SNORM -> Float equation.Kenneth Graunke2018-01-029-44/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Older OpenGL defines two equations for converting from signed-normalized to floating point data. These are: f = (2c + 1)/(2^b - 1) (equation 2.2) f = max{c/2^(b-1) - 1), -1.0} (equation 2.3) Both OpenGL 4.2+ and OpenGL ES 3.0+ mandate that equation 2.3 is to be used in all scenarios, and remove equation 2.2. DirectX uses equation 2.3 as well. Intel hardware only supports equation 2.3, so Gen7.5+ systems that use the vertex fetcher hardware to do the conversions always get formula 2.3. This can make a big difference for 10-10-10-2 formats - the 2-bit value can represent 0 with equation 2.3, and cannot with equation 2.2. Ivybridge and older were using equation 2.2 for OpenGL, and 2.3 for ES. Now that Ivybridge supports OpenGL 4.2, this is wrong - we need to use the new rules, at least in core profile. That would leave Gen4-6 doing something different than all other hardware, which seems...lame. With context version promotion, applications that requested a pre-4.2 context may get promoted to 4.2, and thus get the new rules. Zero cases have been reported of this being a problem. However, we've received a report that following the old rules breaks expectations. SuperTuxKart apparently renders the cars red when following equation 2.2, and works correctly when following equation 2.3: https://github.com/supertuxkart/stk-code/issues/2885#issuecomment-353858405 So, this patch deletes the legacy equation 2.2 support entirely, making all hardware and APIs consistently use the new equation 2.3 rules. If we ever find an application that truly requires the old formula, then we'd likely want that application to work on modern hardware, too. We'd likely restore this support as a driconf option. Until then, drop it. This commit will regress Piglit's draw-vertices-2101010 test on pre-Haswell without the corresponding Piglit patch to accept either formula (commit 35daaa1695ea01eb85bc02f9be9b6ebd1a7113a1): draw-vertices-2101010: Accept either SNORM conversion formula. Reviewed-by: Jason Ekstrand <[email protected]> Reviewed-by: Ian Romanick <[email protected]> Reviewed-by: Chris Forbes <[email protected]>
* i965: Combine {VS,FS}_OPCODE_GET_BUFFER_SIZE opcodes.Kenneth Graunke2017-12-308-19/+14
| | | | | | These are the same, we don't need a separate opcode enum per backend. Reviewed-by: Jason Ekstrand <[email protected]>
* anv/device: Mark all state buffers as needing captureJason Ekstrand2017-12-281-3/+3
| | | | | | | Previously, we were flagging the instruction state buffer for capture but not surface state or dynamic state. We want those captured too. Reviewed-by: Lionel Landwerlin <[email protected]>
* intel/aubinator: Gracefully handle dynamic state not being availableJason Ekstrand2017-12-281-0/+5
| | | | | | | | Some older versions of the Vulkan driver didn't properly tag dynamic state as needing to be captured. Also, this prevents crashes when looking at dumps on older kernels. Reviewed-by: Lionel Landwerlin <[email protected]>
* intel/aubinator: Free section data lastJason Ekstrand2017-12-281-2/+4
| | | | | | | | | We were walking the sections, printing the batches, and then freeing them in one pass. If the batch happens to reference any earlier sections (which it almost certainly will since it's at the end), we will access freed memory. Reviewed-by: Lionel Landwerlin <[email protected]>
* Revert "i965/fs: Use align1 mode on ternary instructions on Gen10+"Anuj Phogat2017-12-221-8/+4
| | | | | | | | | | | This reverts commit 9cd60fce9c22737000a8f8dc711141f8a523fe75. Above commit caused 2000+ piglit tests to assert fail. Disabling the align1 mode on gen10 for now to avoid failures. Cc: Matt Turner <[email protected]> Cc: Rafael Antognolli <[email protected]> Signed-off-by: Anuj Phogat <[email protected]> Tested-by: Rafael Antognolli <[email protected]>
* intel/fs: Initialize fs_visitor::grf_used on construction.Francisco Jerez2017-12-211-0/+1
| | | | | | | | | | | | | | | This should shut up some Valgrind errors during pre-regalloc scheduling. The errors were harmless since they could only have led to the estimation of the bank conflict penalty of an instruction pre-regalloc, which is inaccurate at that point of the program compilation, but no less accurate than the intended "return 0" fall-back path. The scheduling pass is normally re-run after regalloc with a well-defined grf_used value and accurate bank conflict information. Fixes: acf98ff933d "intel/fs: Teach instruction scheduler about GRF bank conflict cycles." Reported-by: Eero Tamminen <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
* intel/fs/bank_conflicts: Use posix_memalign() instead of overaligned new to ↵Francisco Jerez2017-12-211-6/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | obtain vector storage. The weight_vector_type constructor was inadvertently assuming C++17 semantics of the new operator applied on a type with alignment requirement greater than the largest fundamental alignment. Unfortunately on earlier C++ dialects the implementation was allowed to raise an allocation failure when the alignment requirement of the allocated type was unsupported, in an implementation-defined fashion. It's expected that a C++ implementation recent enough to implement P0035R4 would have honored allocation requests for such over-aligned types even if the C++17 dialect wasn't active, which is likely the reason why this problem wasn't caught by our CI system. A more elegant fix would involve wrapping the __SSE2__ block in a '__cpp_aligned_new >= 201606' preprocessor conditional and continue taking advantage of the language feature, but that would yield lower compile-time performance on old compilers not implementing it (e.g. GCC versions older than 7.0). Fixes: af2c320190f3c731 "intel/fs: Implement GRF bank conflict mitigation pass." Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104226 Reported-by: Józef Kucia <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
* anv: disallow VK_REMAINING_ARRAY_LAYERS in vkCmdClearAttachments()Samuel Iglesias Gonsálvez2017-12-201-0/+2
| | | | | | | | Vulkan spec doesn't specify that VK_REMAINING_ARRAY_LAYERS is allowed in the passed VkClearRect struct. Signed-off-by: Samuel Iglesias Gonsálvez <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* intel/compiler/gen10: Disable push constants.Rafael Antognolli2017-12-191-0/+9
| | | | | | | | | | | | We still have gpu hangs on Cannonlake when using push constants, so disable them for now until we have a proper fix for these hangs. v2: Add warning message when creating context too. Signed-off-by: Rafael Antognolli <[email protected]> Cc: Ben Widawsky <[email protected]> Cc: Kenneth Graunke <[email protected]> Reviewed-by: Ben Widawsky <[email protected]>
* anv: Remove unused variable.Bas Nieuwenhuizen2017-12-171-2/+0
| | | | Reviewed-by: Jason Ekstrand <[email protected]>
* isl: Don't require VALIGN_2 for R32G32B32_FLOAT on Haswell.Kenneth Graunke2017-12-151-1/+3
| | | | | | | | | | | | | | According to the RENDER_SURFACE_STATE internal documentation, the R32G32B32_FLOAT restriction is marked "IVB" only. We choose to apply it to Ivybridge and Baytrail, but not Haswell. Apparently fixes KHR-GL46.texture_size_promotion.functional on Haswell. Changes these tests from crashing to skipping on Haswell: - KHR-GL46.direct_state_access.textures_storage_multisample_2d_rgb32f - KHR-GL46.direct_state_access.textures_storage_multisample_3d_rgb32f Reviewed-by: Jason Ekstrand <[email protected]>
* intel/tools: Convert aubinator over to the common frameworkJason Ekstrand2017-12-143-690/+33
| | | | Reviewed-by: Lionel Landwerlin <[email protected]>
* intel/batch-decoder: Decode registersJason Ekstrand2017-12-141-0/+13
| | | | Reviewed-by: Lionel Landwerlin <[email protected]>
* intel/batch-decoder: Decode dynamic stateJason Ekstrand2017-12-141-0/+81
| | | | | | | | Unfortunately, in aubinator and aubinator_error_decode we don't always know how many of a given state we have, so we must guess. One day, we'll come up with a way to annotate the batch to solve this problem. Reviewed-by: Lionel Landwerlin <[email protected]>
* intel/batch-decoder: Decode constants, binding tables, and samplersJason Ekstrand2017-12-141-0/+73
| | | | Reviewed-by: Lionel Landwerlin <[email protected]>
* intel/tools: Switch aubinator_error_decode over to the gen_print_batchJason Ekstrand2017-12-143-205/+37
| | | | | | | The shared framework can now do everything that aubinator_error_decode ever did and more. It's time to make the switch. Reviewed-by: Lionel Landwerlin <[email protected]>
* intel/batch-decoder: Decode graphics shadersJason Ekstrand2017-12-141-0/+95
| | | | Reviewed-by: Lionel Landwerlin <[email protected]>
* intel/batch-decoder: Decode vertex and index buffersJason Ekstrand2017-12-142-0/+161
| | | | Reviewed-by: Lionel Landwerlin <[email protected]>
* intel/batch-decoder: Decode MEDIA_INTERFACE_DESCRIPTOR_LOADJason Ekstrand2017-12-141-0/+145
| | | | Reviewed-by: Lionel Landwerlin <[email protected]>
* intel/tools: Add the start of a generic batch decoderJason Ekstrand2017-12-142-0/+306
| | | | Reviewed-by: Lionel Landwerlin <[email protected]>
* intel/decoder: Expose the raw field value in the iteratorJason Ekstrand2017-12-142-1/+3
| | | | Reviewed-by: Lionel Landwerlin <[email protected]>
* intel/disasm: Take a devinfo in gen_disasm_createJason Ekstrand2017-12-144-8/+7
| | | | Reviewed-by: Lionel Landwerlin <[email protected]>
* intel/decoder: Take a bit offset in gen_print_groupJason Ekstrand2017-12-144-18/+22
| | | | | | | | | | Previously, if a group was nested in another group such that it didn't start on a dword boundary, we would decode it as if it started at the start of its first dword. This changes things to work even more in terms of bits so that we can properly decode these structs. This affects MOCS, attribute swizzles, and several other things. Reviewed-by: Lionel Landwerlin <[email protected]>
* intel/decoder: Stop rounding down to the nearest dwordJason Ekstrand2017-12-141-11/+12
| | | | Reviewed-by: Lionel Landwerlin <[email protected]>
* intel/decoder: Convert the iterator to work entirely in bitsJason Ekstrand2017-12-142-12/+9
| | | | Reviewed-by: Lionel Landwerlin <[email protected]>
* intel/decoder: Drop gen_field_decode helperJason Ekstrand2017-12-142-11/+0
| | | | | | It's unused Reviewed-by: Lionel Landwerlin <[email protected]>
* intel/fs/bank_conflicts: Don't touch Gen7 MRF hack registers.Francisco Jerez2017-12-123-7/+19
| | | | | | | Fixes: af2c320190f3c731 "intel/fs: Implement GRF bank conflict mitigation pass." Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104199 Reported-by: Darius Spitznagel <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* anv: fix bug when using component qualifier in FS outputsSamuel Iglesias Gonsálvez2017-12-121-19/+44
| | | | | | | | | | | | | | | | | | | | | | | We can write to the same output but in different components, like in this example: layout(location = 0, component = 0) out ivec2 dEQP_FragColor_0; layout(location = 0, component = 2) out ivec2 dEQP_FragColor_1; Therefore, they are not two different outputs but only one. Fixes: dEQP-VK.glsl.440.linkage.varying.component.frag_out.* v3: - Remove FRAG_RESULT_MAX. - Add const and use sizeof (Ian). - Do three-pass to set properly the locations of fragment outputs when having arrays (Jason). Signed-off-by: Samuel Iglesias Gonsálvez <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* anv: Enable UBO pushingJason Ekstrand2017-12-082-0/+7
| | | | | | | | | | | | | Push constants on Intel hardware are significantly more performant than pull constants. Since most Vulkan applications don't actively use push constants on Vulkan or at least don't use it heavily, we're pulling way more than we should be. By enabling pushing chunks of UBOs we can get rid of a lot of those pulls. On my SKL GT4e, this improves the performance of Dota 2 and Talos by around 2.5% and improves Aztec Ruins by around 2%. Reviewed-by: Jordan Justen <[email protected]>
* i965/fs: Handle !supports_pull_constants and push UBOs properlyJason Ekstrand2017-12-081-1/+1
| | | | | | In Vulkan, we don't support classic pull constants and everything the client asks us to push, we push. However, for pushed UBOs, we still want to fall back to conventional pulls if we run out of space.
* anv/device: Increase the UBO alignment requirement to 32Jason Ekstrand2017-12-081-2/+10
| | | | | | | | Push constants work in terms of 32-byte chunks so if we want to be able to push UBOs, every thing needs to be 32-byte aligned. Currently, we only require 16-byte which is too small. Reviewed-by: Jordan Justen <[email protected]>
* anv/cmd_buffer: Add support for pushing UBO rangesJason Ekstrand2017-12-082-33/+112
| | | | | | | | In order to do this we have to modify push constant set up to handle ranges. We also have to tweak the way we handle dirty bits a bit so that we re-push whenever a descriptor set changes. Reviewed-by: Jordan Justen <[email protected]>
* anv/cmd_buffer: Add some stage assertsJason Ekstrand2017-12-081-0/+6
| | | | | | | There are several places where we look up opcodes in an array of stages. Assert that the we don't end up going out-of-bounds. Reviewed-by: Jordan Justen <[email protected]>
* anv/cmd_buffer: Add some helpers for working with descriptor setsJason Ekstrand2017-12-081-11/+34
| | | | Reviewed-by: Jordan Justen <[email protected]>
* anv/pipeline: Translate vulkan_resource_index to a constant when possibleJason Ekstrand2017-12-081-4/+13
| | | | | | | | | | We want to call brw_nir_analyze_ubo_ranges immedately after anv_nir_apply_pipeline_layout and it badly wants constants. We could run an optimization step and let constant folding do it but that's way more expensive than needed. It's really easy to just handle constants in apply_pipeline_layout. Reviewed-by: Jordan Justen <[email protected]>
* i965/fs: Rewrite assign_constant_locationsJason Ekstrand2017-12-081-133/+185
| | | | | | | | | | | | | | | | | | | | This rewires the logic for assigning uniform locations to work in terms of "complex alignments". The basic idea is that, as we walk the list of instructions, we keep track of the alignment and continuity requirements of each slot and assert that the alignments all match up. We then use those alignments in the compaction stage to ensure that everything gets placed at a properly aligned register. The old mechanism handled alignments by special-casing each of the bit sizes and placing 64-bit values first followed by 32-bit values. The old scheme had the advantage of never leaving a hole since all the 64-bit values could be tightly packed and so could the 32-bit values. However, the new scheme has no type size special cases so it handles not only 32 and 64-bit types but should gracefully extend to 16 and 8-bit types as the need arises. Tested-by: Jose Maria Casanova Crespo <[email protected]> Reviewed-by: Topi Pohjolainen <[email protected]>
* anv: Disable VK_KHR_16bit_storageJason Ekstrand2017-12-082-3/+3
| | | | | | | | | | | | The testing for this extension is currently very poor. The CTS tests only test accessing UBOs and SSBOs at dynamic offsets so none of our constant-offset paths get triggered at all. Also, there's an assertion in our handling of nir_intrinsic_load_uniform that offset % 4 == 0 which is never triggered indicating that nothing every gets loaded from an offset which is not a dword. Both push constants and the constant offset pull paths are complex enough, we really don't want to ship without tests. We'll turn the extension back on once we have decent tests.
* intel/cfg: Represent divergent control flow paths caused by non-uniform loop ↵Francisco Jerez2017-12-071-6/+69
| | | | | | | | | | | | | | | | | | | | | | | | | | execution. This addresses a long-standing back-end compiler bug that could lead to cross-channel data corruption in loops executed non-uniformly. In some cases live variables extending through a loop divergence point (e.g. a non-uniform break) into a convergence point (e.g. the end of the loop) wouldn't be considered live along all physical control flow paths the SIMD thread could possibly have taken in between due to some channels remaining in the loop for additional iterations. This patch fixes the problem by extending the CFG with physical edges that don't exist in the idealized non-vectorized program, but represent valid control flow paths the SIMD EU may take due to the divergence of logical threads. This makes sense because the i965 IR is explicitly SIMD, and it's not uncommon for instructions to have an influence on neighboring channels (e.g. a force_writemask_all header setup), so the behavior of the SIMD thread as a whole needs to be considered. No changes in shader-db. Reviewed-by: Jason Ekstrand <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* intel/fs: Don't let undefined values prevent copy propagation.Francisco Jerez2017-12-071-3/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This makes the dataflow propagation logic of the copy propagation pass more intelligent in cases where the destination of a copy is known to be undefined for some incoming CFG edges, building upon the definedness information provided by the last patch. Helps a few programs, and avoids a handful shader-db regressions from the next patch. shader-db results on ILK: total instructions in shared programs: 6541547 -> 6541523 (-0.00%) instructions in affected programs: 360 -> 336 (-6.67%) helped: 8 HURT: 0 LOST: 0 GAINED: 10 shader-db results on BDW: total instructions in shared programs: 8174323 -> 8173882 (-0.01%) instructions in affected programs: 7730 -> 7289 (-5.71%) helped: 5 HURT: 2 LOST: 0 GAINED: 4 shader-db results on SKL: total instructions in shared programs: 8185669 -> 8184598 (-0.01%) instructions in affected programs: 10364 -> 9293 (-10.33%) helped: 5 HURT: 2 LOST: 0 GAINED: 2 Reviewed-by: Jason Ekstrand <[email protected]>
* intel/fs: Restrict live intervals to the subset possibly reachable from any ↵Francisco Jerez2017-12-072-4/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | definition. Currently the liveness analysis pass would extend a live interval up to the top of the program when no unconditional and complete definition of the variable is found that dominates all of its uses. This can lead to a serious performance problem in shaders containing many partial writes, like scalar arithmetic, FP64 and soon FP16 operations. The number of oversize live intervals in such workloads can cause the compilation time of the shader to explode because of the worse than quadratic behavior of the register allocator and scheduler when running out of registers, and it can also cause the running time of the shader to explode due to the amount of spilling it leads to, which is orders of magnitude slower than GRF memory. This patch fixes it by computing the intersection of our current live intervals with the subset of the program that can possibly be reached from any definition of the variable. Extending the storage allocation of the variable beyond that is pretty useless because its value is guaranteed to be undefined at a point that cannot be reached from any definition. According to Jason, this improves performance of the subgroup Vulkan CTS tests significantly (e.g. the runtime of the dvec4 broadcast test improves by nearly 50x). No significant change in the running time of shader-db (with 5% statistical significance). shader-db results on IVB: total cycles in shared programs: 61108780 -> 60932856 (-0.29%) cycles in affected programs: 16335482 -> 16159558 (-1.08%) helped: 5121 HURT: 4347 total spills in shared programs: 1309 -> 1288 (-1.60%) spills in affected programs: 249 -> 228 (-8.43%) helped: 3 HURT: 0 total fills in shared programs: 1652 -> 1597 (-3.33%) fills in affected programs: 262 -> 207 (-20.99%) helped: 4 HURT: 0 LOST: 2 GAINED: 209 shader-db results on BDW: total cycles in shared programs: 67617262 -> 67361220 (-0.38%) cycles in affected programs: 23397142 -> 23141100 (-1.09%) helped: 8045 HURT: 6488 total spills in shared programs: 1456 -> 1252 (-14.01%) spills in affected programs: 465 -> 261 (-43.87%) helped: 3 HURT: 0 total fills in shared programs: 1720 -> 1465 (-14.83%) fills in affected programs: 471 -> 216 (-54.14%) helped: 4 HURT: 0 LOST: 2 GAINED: 162 shader-db results on SKL: total cycles in shared programs: 65436248 -> 65245186 (-0.29%) cycles in affected programs: 22560936 -> 22369874 (-0.85%) helped: 8457 HURT: 6247 total spills in shared programs: 437 -> 437 (0.00%) spills in affected programs: 0 -> 0 helped: 0 HURT: 0 total fills in shared programs: 870 -> 854 (-1.84%) fills in affected programs: 16 -> 0 helped: 1 HURT: 0 LOST: 0 GAINED: 107 Reviewed-by: Jason Ekstrand <[email protected]>
* intel/fs: Teach instruction scheduler about GRF bank conflict cycles.Francisco Jerez2017-12-073-2/+23
| | | | | | | | | | | This should allow the post-RA scheduler to do a slightly better job at hiding latency in presence of instructions incurring bank conflicts. The main purpuse of this patch is not to improve performance though, but to get conflict cycles to show up in shader-db statistics in order to make sure that regressions in the bank conflict mitigation pass don't go unnoticed. Acked-by: Matt Turner <[email protected]>
* intel/fs: Implement GRF bank conflict mitigation pass.Francisco Jerez2017-12-075-0/+898
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unnecessary GRF bank conflicts increase the issue time of ternary instructions (the overwhelmingly most common of which is MAD) by roughly 50%, leading to reduced ALU throughput. This pass attempts to minimize the number of bank conflicts by rearranging the layout of the GRF space post-register allocation. It's in general not possible to eliminate all of them without introducing extra copies, which are typically more expensive than the bank conflict itself. In a shader-db run on SKL this helps roughly 46k shaders: total conflicts in shared programs: 1008981 -> 600461 (-40.49%) conflicts in affected programs: 816222 -> 407702 (-50.05%) helped: 46234 HURT: 72 The running time of shader-db itself on SKL seems to be increased by roughly 2.52%±1.13% with n=20 due to the additional work done by the compiler back-end. On earlier generations the pass is somewhat less effective in relative terms because the hardware incurs a bank conflict anytime the last two sources of the instruction are duplicate (e.g. while trying to square a value using MAD), which is impossible to avoid without introducing copies. E.g. for a shader-db run on SNB: total conflicts in shared programs: 944636 -> 623185 (-34.03%) conflicts in affected programs: 853258 -> 531807 (-37.67%) helped: 31052 HURT: 19 And on BDW: total conflicts in shared programs: 1418393 -> 987539 (-30.38%) conflicts in affected programs: 1179787 -> 748933 (-36.52%) helped: 47592 HURT: 70 On SKL GT4e this improves performance of GpuTest Volplosion by 3.64% ±0.33% with n=16. NOTE: This patch intentionally disregards some i965 coding conventions for the sake of reviewability. This is addressed by the next squash patch which introduces an amount of (for the most part boring) boilerplate that might distract reviewers from the non-trivial algorithmic details of the pass. The following patch is squashed in: SQUASH: intel/fs/bank_conflicts: Roll back to the nineties. Acked-by: Matt Turner <[email protected]>
* meson: add dep_thread to every lib that includes threads.hEric Engestrom2017-12-071-1/+1
| | | | | | Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104141 Signed-off-by: Eric Engestrom <[email protected]> Reviewed-by: Dylan Baker <[email protected]>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 17:27:40 +0000