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* i965/fs: Implement basic SPIR-V subgroup intrinsicsJason Ekstrand2018-03-072-0/+26
| | | | | Reviewed-by: Samuel Iglesias Gonsálvez <[email protected]> Reviewed-by: Iago Toral Quiroga <[email protected]>
* anv: Trivially implement VK_KHR_device_groupJason Ekstrand2018-03-071-0/+1
| | | | Reviewed-by: Iago Toral Quiroga <[email protected]>
* anv: Implement vkCmdDispatchBaseJason Ekstrand2018-03-071-0/+3
| | | | | | | | | | This is part of the device groups extension/feature but it's a decent chunk of work in its own right so it's worth breaking into its own patch. The mechanism we use is fairly straightforward: we just push the base work group id into the shader and add it to the work group id we get from dispatch. Reviewed-by: Samuel Iglesias Gonsálvez <[email protected]>
* intel: Split gen_device_info out into libintel_devJordan Justen2018-03-053-3/+3
| | | | | | | | | | | | Split out the device info so isl doesn't depend on intel/common. Now it will depend on the new intel/dev device info lib. This will allow the decoder in intel/common to use isl, allowing us to apply Ken's patch that removes the genxml duplication of surface formats. Signed-off-by: Jordan Justen <[email protected]> Reviewed-by: Samuel Iglesias Gonsálvez <[email protected]>
* i965: Silence warnings about mixing enum and non-enum in conditionalIan Romanick2018-03-021-1/+1
| | | | | | | | | | | | | | | | | | | | Reduces my build from 6451 warnings to 6301 warnings by silencing 150 instances of ../../SOURCE/master/src/intel/compiler/brw_inst.h: In function ‘brw_reg_type brw_inst_src1_type(const gen_device_info*, const brw_inst*)’: ../../SOURCE/master/src/intel/compiler/brw_inst.h:802:55: warning: enumeral and non-enumeral type in conditional expression [-Wextra] unsigned file = __builtin_strcmp("dst", #reg) == 0 ? \ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~ BRW_GENERAL_REGISTER_FILE : \ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ brw_inst_##reg##_reg_file(devinfo, inst); \ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ../../SOURCE/master/src/intel/compiler/brw_inst.h:811:1: note: in expansion of macro ‘REG_TYPE’ REG_TYPE(src1) ^~~~~~~~ Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Samuel Iglesias Gonsálvez <[email protected]>
* intel/compiler: Silence unused parameter warnings in release buildsIan Romanick2018-03-022-6/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Reduces my build from 7005 warnings to 6451 warnings by silencing 554 instances of In file included from ../../SOURCE/master/src/intel/compiler/brw_disasm.c:28:0: ../../SOURCE/master/src/intel/compiler/brw_inst.h: In function ‘brw_inst_3src_a1_src0_imm’: ../../SOURCE/master/src/intel/compiler/brw_inst.h:346:57: warning: unused parameter ‘devinfo’ [-Wunused-parameter] brw_inst_3src_a1_src0_imm(const struct gen_device_info *devinfo, ^~~~~~~ ../../SOURCE/master/src/intel/compiler/brw_inst.h: In function ‘brw_inst_3src_a1_src2_imm’: ../../SOURCE/master/src/intel/compiler/brw_inst.h:354:57: warning: unused parameter ‘devinfo’ [-Wunused-parameter] brw_inst_3src_a1_src2_imm(const struct gen_device_info *devinfo, ^~~~~~~ ../../SOURCE/master/src/intel/compiler/brw_inst.h: In function ‘brw_inst_set_3src_a1_src0_imm’: ../../SOURCE/master/src/intel/compiler/brw_inst.h:362:61: warning: unused parameter ‘devinfo’ [-Wunused-parameter] brw_inst_set_3src_a1_src0_imm(const struct gen_device_info *devinfo, ^~~~~~~ ../../SOURCE/master/src/intel/compiler/brw_inst.h: In function ‘brw_inst_set_3src_a1_src2_imm’: ../../SOURCE/master/src/intel/compiler/brw_inst.h:370:61: warning: unused parameter ‘devinfo’ [-Wunused-parameter] brw_inst_set_3src_a1_src2_imm(const struct gen_device_info *devinfo, ^~~~~~~ ../../SOURCE/master/src/intel/compiler/brw_inst.h: In function ‘brw_inst_imm_uq’: ../../SOURCE/master/src/intel/compiler/brw_inst.h:703:47: warning: unused parameter ‘devinfo’ [-Wunused-parameter] brw_inst_imm_uq(const struct gen_device_info *devinfo, const brw_inst *insn) ^~~~~~~ In file included from ../../SOURCE/master/src/intel/compiler/brw_shader.h:29:0, from ../../SOURCE/master/src/intel/compiler/brw_disasm.c:29: ../../SOURCE/master/src/intel/compiler/brw_compiler.h: In function ‘brw_stage_has_packed_dispatch’: ../../SOURCE/master/src/intel/compiler/brw_compiler.h:1277:61: warning: unused parameter ‘devinfo’ [-Wunused-parameter] brw_stage_has_packed_dispatch(const struct gen_device_info *devinfo, ^~~~~~~ ../../SOURCE/master/src/intel/compiler/brw_disasm.c: In function ‘src_ia1’: ../../SOURCE/master/src/intel/compiler/brw_disasm.c:849:18: warning: unused parameter ‘_reg_file’ [-Wunused-parameter] unsigned _reg_file, ^~~~~~~~~ Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Samuel Iglesias Gonsálvez <[email protected]>
* intel: Drop program size pointer from vec4/fs assembly getters.Kenneth Graunke2018-03-029-25/+17
| | | | | | | | | These days, we're just passing a pointer to a prog_data field, which we already have access to. We can just use it directly. (In the past, it was a pointer to a separate value.) Reviewed-by: Iago Toral Quiroga <[email protected]>
* intel/compiler: Memory fence commit must always be enabled for gen10+Anuj Phogat2018-03-021-1/+3
| | | | | | | | | | | | Commit bit in the message descriptor (Bit 13) must be always set to true in CNL+ for memory fence messages. It also fixes a piglit GPU hang on cnl+ in simulation environment. Piglit test: arb_shader_image_load_store-shader-mem-barrier See HSD ES # 1404612949 Signed-off-by: Anuj Phogat <[email protected]> Cc: [email protected] Reviewed-by: Francisco Jerez <[email protected]>
* Revert "i965/fs: Predicate byte scattered writes if needed"Francisco Jerez2018-03-021-14/+1
| | | | | | | | | | | | | This reverts commit a4031bdfa927fb4c3c5d0bdadc70634f3c1a5eac. It's redundant with the sample mask predication done at this point by the common logical send lowering infrastructure, and rather buggy because it wasn't applying the correct sample mask in shaders using discard, since the dispatch mask returned by FS_OPCODE_MOV_DISPATCH_TO_FLAGS doesn't reflect samples discarded by the shader, so it could have led to data corruption in fragment shader invocations that execute discard based on a non-dynamically uniform condition. Reviewed-by: Kenneth Graunke <[email protected]>
* intel/fs: Handle surface opcode sample masks via predication.Francisco Jerez2018-03-021-1/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The main motivation is to enable HDC surface opcodes on ICL which no longer allows the sample mask to be provided in a message header, but this is enabled all the way back to IVB when possible because it decreases the instruction count of some shaders using HDC messages significantly, e.g. one of the SynMark2 CSDof compute shaders decreases instruction count by about 40% due to the removal of header setup boilerplate which in turn makes a number of send message payloads more easily CSE-able. Shader-db results on SKL: total instructions in shared programs: 15325319 -> 15314384 (-0.07%) instructions in affected programs: 311532 -> 300597 (-3.51%) helped: 491 HURT: 1 Shader-db results on BDW where the optimization needs to be disabled in some cases due to hardware restrictions: total instructions in shared programs: 15604794 -> 15598028 (-0.04%) instructions in affected programs: 220863 -> 214097 (-3.06%) helped: 351 HURT: 0 The FPS of SynMark2 CSDof improves by 5.09% ±0.36% (n=10) on my SKL laptop with this change. According to Eero this improves performance of the same test by 9% on BYT and by 7-8% on BXT J4205 and on SKL GT2 desktop. Reviewed-by: Kenneth Graunke <[email protected]> Tested-By: Eero Tamminen <[email protected]>
* intel/eu: Plumb header present bit to codegen helpers for HDC messages.Francisco Jerez2018-03-024-29/+50
| | | | | | | | | | This makes sure that the header-present bit of the message descriptor is in sync with the IR instruction fields, which gives the optimizer more control to avoid the overhead of setting up a message header when it's possible to do so. Reviewed-by: Jordan Justen <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* intel/ir: Allow arbitrary scratch flag registers for ↵Francisco Jerez2018-03-023-4/+6
| | | | | | | | | | | | | | SHADER_OPCODE_FIND_LIVE_CHANNEL. This shouldn't cause any functional change at this point, it changes SHADER_OPCODE_FIND_LIVE_CHANNEL to use the flag register specified at the IR level instead of the hard-coded f1.0, now that it can be represented in backend_instruction::flag_subreg. This will be necessary for scheduling to behave correctly once more things start making use of f1.0. Reviewed-by: Jordan Justen <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* intel/ir: Allow representing additional flag subregisters in the IR.Francisco Jerez2018-03-027-14/+24
| | | | | | | | | This allows representing conditional mods and predicates on f1.0-f1.1 at the IR level by adding an extra bit to the flag_subreg backend_instruction field. Reviewed-by: Jordan Justen <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* intel/fs: Set up sampler message headers in the visitor on gen7+Jason Ekstrand2018-03-012-22/+39
| | | | | | | | | | | | | | This gives the scheduler visibility into the headers which should improve scheduling. More importantly, however, it lets the scheduler know that the header gets written. As-is, the scheduler thinks that a texture instruction only reads it's payload and is unaware that it may write to the first register so it may reorder it with respect to a read from that register. This is causing issues in a couple of Dota 2 vertex shaders. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104923 Cc: [email protected] Reviewed-by: Francisco Jerez <[email protected]>
* spirv/i965/anv: Relax push constant offset assertions being 32-bit alignedJose Maria Casanova Crespo2018-02-281-5/+10
| | | | | | | | | | | | | | | | The introduction of 16-bit types with VK_KHR_16bit_storages implies that push constant offsets could be multiple of 2-bytes. Some assertions are updated so offsets should be just multiple of size of the base type but in some cases we can not assume it as doubles aren't aligned to 8 bytes in some cases. For 16-bit types, the push constant offset takes into account the internal offset in the 32-bit uniform bucket adding 2-bytes when we access not 32-bit aligned elements. In all 32-bit aligned cases it just becomes 0. v2: Assert offsets to be aligned to the dest type size. (Jason Ekstrand) Reviewed-by: Jason Ekstrand <[email protected]>
* i965/fs: Support 16-bit store_ssbo with VK_KHR_relaxed_block_layoutJose Maria Casanova Crespo2018-02-281-7/+15
| | | | | | | | | | | | | | | | Restrict the use of untyped_surface_write with 16-bit pairs in ssbo to the cases where we can guarantee that offset is multiple of 4. Taking into account that VK_KHR_relaxed_block_layout is available in ANV we can only guarantee that when we have a constant offset that is multiple of 4. For non constant offsets we will always use byte_scattered_write. v2: (Jason Ekstrand) - Assert offset_reg to be multiple of 4 if it is immediate. Reviewed-by: Jason Ekstrand <[email protected]>
* i965/fs: Support 16-bit do_read_vector with VK_KHR_relaxed_block_layoutJose Maria Casanova Crespo2018-02-281-14/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | 16-bit load_ubo/ssbo operations that call do_untyped_read_vector don't guarantee that offsets are multiple of 4-bytes as required by untyped_read message. This happens for example in the case of f16mat3x3 when then VK_KHR_relaxed_block_layout is enabled. Vectors reads when we have non-constant offsets are implemented with multiple byte_scattered_read messages that not require 32-bit aligned offsets. Now for all constant offsets we can use the untyped_read_surface message. In the case of constant offsets not aligned to 32-bits, we calculate a start offset 32-bit aligned and use the shuffle_32bit_load_result_to_16bit_data function and the first_component parameter to skip the copy of the unneeded component. v2: (Jason Ekstrand) Use untyped_read_surface messages always we have constant offsets. v3: (Jason Ekstrand) Simplify loop for reads with non constant offsets. Use end - start to calculate the number of 32-bit components to read with constant offsets. Reviewed-by: Jason Ekstrand <[email protected]>
* i965/fs: shuffle_32bit_load_result_to_16bit_data now skips componentsJose Maria Casanova Crespo2018-02-283-3/+6
| | | | | | | | | | | | | | | | This helper used to load 16bit components from 32-bits read now allows skipping components with the new parameter first_component. The semantics now skip components until we reach the first_component, and then reads the number of components passed to the function. All previous uses of the helper are updated to use 0 as first_component. This will allow read 16-bit components when the first one is not aligned 32-bit. Enabling more usages of untyped_reads with 16-bit types. v2: (Jason Ektrand) Change parameters order to first_component, num_components Reviewed-by: Jason Ekstrand <[email protected]>
* isl/i965/fs: SSBO/UBO buffers need size padding if not multiple of 32-bitJose Maria Casanova Crespo2018-02-281-1/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The surfaces that backup the GPU buffers have a boundary check that considers that access to partial dwords are considered out-of-bounds. For example, buffers with 1,3 16-bit elements has size 2 or 6 and the last two bytes would always be read as 0 or its writting ignored. The introduction of 16-bit types implies that we need to align the size to 4-bytew multiples so that partial dwords could be read/written. Adding an inconditional +2 size to buffers not being multiple of 2 solves this issue for the general cases of UBO or SSBO. But, when unsized arrays of 16-bit elements are used it is not possible to know if the size was padded or not. To solve this issue the implementation calculates the needed size of the buffer surfaces, as suggested by Jason: surface_size = isl_align(buffer_size, 4) + (isl_align(buffer_size, 4) - buffer_size) So when we calculate backwards the buffer_size in the backend we update the resinfo return value with: buffer_size = (surface_size & ~3) - (surface_size & 3) It is also exposed this buffer requirements when robust buffer access is enabled so these buffer sizes recommend being multiple of 4. v2: (Jason Ekstrand) Move padding logic fron anv to isl_surface_state. Move calculus of original size from spirv to driver backend. v3: (Jason Ekstrand) Rename some variables and use a similar expresion when calculating. padding than when obtaining the original buffer size. Avoid use of unnecesary component call at brw_fs_nir. v4: (Jason Ekstrand) Complete comment with buffer size calculus explanation in brw_fs_nir. Reviewed-by: Jason Ekstrand <[email protected]>
* i965: Don't emit MOVs with undefined registers for Gen4 point clipping.Kenneth Graunke2018-02-281-1/+1
| | | | | | | | | | | | Gen4 point clipping calls brw_clip_tri_alloc_regs with nr_verts == 0, which means that c->reg.vertex[] isn't initialized. It then emits MOVs to stomp components of those uninitialized registers to 0. This started causing assertions after Matt's recent series, when those uninitialized registers started getting BRW_REGISTER_TYPE_NF, which definitely doesn't exist on Gen4-5. Reviewed-by: Matt Turner <[email protected]>
* intel/compiler: Re-add .vs_inputs_dual_locations = trueMatt Turner2018-02-281-0/+1
| | | | | | Looks like a rebase mistake. Fixes: 89fe5190a256 ("intel/compiler: Lower flrp32 on Gen11+")
* intel/compiler: Add ICL to test_eu_validate.cppMatt Turner2018-02-281-0/+1
| | | | | | | With the Align16 tests now disabled, we can run the rest of the tests in ICL mode (and see them pass!) Reviewed-by: Kenneth Graunke <[email protected]>
* intel/compiler: Disable Align16 tests on Gen11+Matt Turner2018-02-281-0/+16
| | | | | | Align16 is no more. Reviewed-by: Kenneth Graunke <[email protected]>
* intel/compiler: Add instruction compaction support on Gen11Matt Turner2018-02-281-0/+42
| | | | | | Gen11 only differs from SKL+ in that it uses a new datatype index table. Reviewed-by: Kenneth Graunke <[email protected]>
* intel/compiler: Mark line, pln, and lrp as removed on Gen11+Matt Turner2018-02-281-4/+6
| | | | Reviewed-by: Kenneth Graunke <[email protected]>
* intel/compiler: Lower flrp32 on Gen11+Matt Turner2018-02-285-17/+26
| | | | | | The LRP instruction is no more. Reviewed-by: Kenneth Graunke <[email protected]>
* intel/compiler/fs: Implement ddy without using align16 for Gen11+Matt Turner2018-02-281-8/+38
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Align16 is no more. We previously generated an align16 ADD instruction to calculate DDY: add(16) g25<1>F -g23<4>.xyxyF g23<4>.zwzwF { align16 1H }; Without align16, we now implement it as: add(4) g25<1>F -g23<0,2,1>F g23.2<0,2,1>F { align1 1N }; add(4) g25.4<1>F -g23.4<0,2,1>F g23.6<0,2,1>F { align1 1N }; add(4) g26<1>F -g24<0,2,1>F g24.2<0,2,1>F { align1 1N }; add(4) g26.4<1>F -g24.4<0,2,1>F g24.6<0,2,1>F { align1 1N }; where only the first two instructions are needed in SIMD8 mode. Note: an earlier version of the patch implemented this in two instructions in SIMD16: add(8) g25<2>F -g23<4,2,0>F g23.2<4,2,0>F { align1 1N }; add(8) g25.1<2>F -g23.1<4,2,0>F g23.3<4,2,0>F { align1 1N }; but I realized that the channel enable bits will not be correct. If we knew we were under uniform control flow, we could emit only those two instructions however. Reviewed-by: Kenneth Graunke <[email protected]>
* intel/compiler/fs: Simplify ddx/ddy code generationMatt Turner2018-02-281-42/+21
| | | | | | The brw_reg() constructor just obfuscates things here, in my opinion. Reviewed-by: Kenneth Graunke <[email protected]>
* intel/compiler/fs: Pass fs_inst to generate_ddx/ddy instead of opcodeMatt Turner2018-02-282-8/+10
| | | | | | | In a future patch, generate_ddy will want to inspect inst->exec_size. Change generate_ddx as well for consistency. Reviewed-by: Kenneth Graunke <[email protected]>
* intel/compiler/fs: Don't generate integer DWord multiply on Gen11Matt Turner2018-02-281-5/+1
| | | | | | | Like CHV et al., Gen11 does not support 32x32 -> 32/64-bit integer multiplies. Reviewed-by: Kenneth Graunke <[email protected]>
* intel/compiler/fs: Implement FS_OPCODE_LINTERP with MADs on Gen11+Matt Turner2018-02-282-4/+46
| | | | | | | | | | | | | | | | | | | The PLN instruction is no more. Its functionality is now implemented using two MAD instructions with the new native-float type. Instead of pln(16) r20.0<1>:F r10.4<0;1,0>:F r4.0<8;8,1>:F we now have mad(8) acc0<1>:NF r10.7<0;1,0>:F r4.0<8;8,1>:F r10.4<0;1,0>:F mad(8) r20.0<1>:F acc0<8;8,1>:NF r5.0<8;8,1>:F r10.5<0;1,0>:F mad(8) acc0<1>:NF r10.7<0;1,0>:F r6.0<8;8,1>:F r10.4<0;1,0>:F mad(8) r21.0<1>:F acc0<8;8,1>:NF r7.0<8;8,1>:F r10.5<0;1,0>:F ... and in the case of SIMD8 only the first pair of MAD instructions is used. Reviewed-by: Kenneth Graunke <[email protected]>
* intel/compiler/fs: Return multiple_instructions_emitted from generate_linterpMatt Turner2018-02-282-4/+8
| | | | | | | If multiple instructions are emitted, special handling of things like conditional mod and NoDDClr/NoDDChk need to be performed. Reviewed-by: Kenneth Graunke <[email protected]>
* intel/compiler/fs: Fix application of cmod and saturate to LINE/MAC pairMatt Turner2018-02-281-2/+11
| | | | | | | | | This isn't technically broken, but the next patch will make this function report whether it generated multiple instructions, and that information will be used to disable the application of conditional mod by the generic code. Reviewed-by: Kenneth Graunke <[email protected]>
* intel/compiler: Add Gen11+ native float typeMatt Turner2018-02-286-2/+32
| | | | | | | | | | | | This new type exposes the additional precision offered by the accumulator register and will be used in the next patch to implement the functionality of the PLN instruction using a pair of MAD instructions. One weird thing to note: align1 ternary instructions may only have an accumulator in the dst or src1 normally, but when src0's type is :NF the accumulator is read. Reviewed-by: Kenneth Graunke <[email protected]>
* intel/compiler: Add Gen11 register typesMatt Turner2018-02-281-8/+65
| | | | | | | The hardware register types' encodings have changed on Gen11. Good thing we have that superfluous looking brw_reg_type abstraction lying around! Reviewed-by: Kenneth Graunke <[email protected]>
* nir: add lower_ldexp to nir compiler optionsTimothy Arceri2018-02-281-0/+1
| | | | Reviewed-by: Marek Olšák <[email protected]>
* intel/ir: Fix invalid type aliasing with undefined behavior in test_eu_compact.Francisco Jerez2018-02-271-3/+3
| | | | | | | | | | | | | | | | | test_fuzz_compact_instruction() was attempting to modify the uint64_t data array of a brw_inst through a pointer to uint32_t, which has undefined behavior. This was causing the test_eu_compact unit test to fail mysteriously for me on GCC 7 with some additional harmless-looking changes I had applied to my tree, which happened to affect the order instructions are emitted by GCC causing the bit twiddling to be done after the clear_pad_bits() call which is supposed to overwrite the same data through a pointer of different type, leading to data corruption. A similar failure has been reported by Vinson Lee on the master branch built with GCC 8. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105052 Tested-by: Vinson Lee <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* i965: Fix compiler warning about write being undefined.Eric Anholt2018-02-201-1/+1
| | | | | | | This looks like it should be protected by the assume() about nr_color_regions, but my compiler warns anyway. Reviewed-by: Matt Turner <[email protected]>
* i965/compiler: clean up nir_intrinsic_load_input for vertex shadersIago Toral Quiroga2018-02-141-11/+2
| | | | | | | | | This code to re-set the type of the source and destination is not necessary since we never manipulate the types. Looks like a left over from a time where we had to retype to float temporarily to handle 64-bit inputs. Reviewed-by: Samuel Iglesias Gonsálvez <[email protected]>
* intel/compiler: fix first_component for 64-bit types on vertex inputsIago Toral Quiroga2018-02-141-0/+3
| | | | | | | | | | Divide it by two as we do for other stages. This is because the component layout qualifier is always in 32-bit units. Fixes issues in a new CTS test (still WIP): KHR-GL45.enhanced_layouts.varying_double_components Reviewed-by: Samuel Iglesias Gonsálvez <[email protected]>
* intel/compiler: fix 64bit value prints on 32bitGrazvydas Ignotas2018-02-102-3/+3
| | | | | | | | Fix the following: warning: format ‘%lx’ expects argument of type ‘long unsigned int’, but argument 3 has type ‘uint64_t {aka long long unsigned int}. Reviewed-by: Lionel Landwerlin <[email protected]>
* i965: remove unused brw_nir_lower_cs_shared()Timothy Arceri2018-02-072-9/+0
| | | | | | This has been unused since 8761a04d0d93. Reviewed-by: Elie Tournier <[email protected]>
* i965/nir: do int64 lowering before optimizationIago Toral Quiroga2018-02-061-4/+12
| | | | | | | | | | | | | | | | | | | | | | | | Otherwise loop unrolling will fail to see the actual cost of the unrolling operations when the loop body contains 64-bit integer instructions, and very specially when the divmod64 lowering applies, since its lowering is quite expensive. Without this change, some in-development CTS tests for int64 get stuck forever trying to register allocate a shader with over 50K SSA values. The large number of SSA values is the result of NIR first unrolling multiple seemingly simple loops that involve int64 instructions, only to then lower these instructions to produce a massive pile of code (due to the divmod64 lowering in the unrolled instructions). With this change, loop unrolling will see the loops with the int64 code already lowered and will realize that it is too expensive to unroll. v2: Run nir_algebraic first so we can hopefully get rid of some of the int64 instructions before we even attempt to lower them. Reviewed-by: Matt Turner <[email protected]>
* i965: Move mistakenly placed lineMatt Turner2018-02-051-1/+1
| | | | | | | Ken called this out in review, but it seems I forgot to make the change. I noticed that the control flow annotations in the fragment shader disassembly of tests/shaders/glsl-fs-loop-continue.shader_test were not correct, and moving this line to the correct place fixes it.
* nir: add vs_inputs_dual_locations compiler optionTimothy Arceri2018-01-301-0/+3
| | | | | | | | | | | | | Allows nir drivers to either use a single or dual locations for vs double inputs. i965 uses dual locations for both OpenGL and Vulkan drivers, for now gallium OpenGL drivers only use a single location. The following patch will also make use of this option when calling nir_shader_gather_info(). Reviewed-by: Karol Herbst <[email protected]>
* compiler: tidy up double_inputs_read usesTimothy Arceri2018-01-301-1/+1
| | | | | | | | | | | | | First we move double_inputs_read into a vs struct in the union, double_inputs_read is only used for vs inputs so this will save space and also allows us to add a new double_inputs field. We add the new field because c2acf97fcc9b changed the behaviour of double_inputs_read, and while it's no longer used to track actual reads in i965 we do still want to track this for gallium drivers. Reviewed-by: Marek Olšák <[email protected]>
* i965/gen10: Re-enable push constants.Rafael Antognolli2018-01-261-9/+0
| | | | | | | | | | The GPU hang caused by push constants is apparently fixed, so let's enable them again. Signed-off-by: Rafael Antognolli <[email protected]> Cc: "18.0" <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* i965/fs: Reset the register file to VGRF in lower_integer_multiplicationJason Ekstrand2018-01-251-5/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | 18fde36ced4279f2577097a1a7d31b55f2f5f141 changed the way temporary registers were allocated in lower_integer_multiplication so that we allocate regs_written(inst) space and keep the stride of the original destination register. This was to ensure that any MUL which originally followed the CHV/BXT integer multiply regioning restrictions would continue to follow those restrictions even after lowering. This works fine except that I forgot to reset the register file to VGRF so, even though they were assigned a number from alloc.allocate(), they had the wrong register file. This caused some GLES 3.0 CTS tests to start failing on Sandy Bridge due to attempted reads from the MRF: ES3-CTS.functional.shaders.precision.int.highp_mul_fragment.snbm64 ES3-CTS.functional.shaders.precision.int.mediump_mul_fragment.snbm64 ES3-CTS.functional.shaders.precision.int.lowp_mul_fragment.snbm64 ES3-CTS.functional.shaders.precision.uint.highp_mul_fragment.snbm64 ES3-CTS.functional.shaders.precision.uint.mediump_mul_fragment.snbm64 ES3-CTS.functional.shaders.precision.uint.lowp_mul_fragment.snbm64 This commit remedies this problem by, instead of copying inst->dst and overwriting nr, just make a new register and set the region to match inst->dst. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103626 Fixes: 18fde36ced4279f2577097a1a7d31b55f2f5f141 Cc: "17.3" <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* i965: Drop render_target_start from binding table struct.Kenneth Graunke2018-01-222-5/+2
| | | | | | | | | We have to start render targets at binding table index 0 in order to use headerless FB write messages, and in fact already assume this in a bunch of places in the code. Let's finish that off, and not bother storing 0 in a struct to pretend to add it in a few places. Reviewed-by: Iago Toral Quiroga <[email protected]>
* intel/fs: Optimize and simplify the copy propagation dataflow logic.Francisco Jerez2018-01-171-24/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously the dataflow propagation algorithm would calculate the ACP live-in and -out sets in a two-pass fixed-point algorithm. The first pass would update the live-out sets of all basic blocks of the program based on their live-in sets, while the second pass would update the live-in sets based on the live-out sets. This is incredibly inefficient in the typical case where the CFG of the program is approximately acyclic, because it can take up to 2*n passes for an ACP entry introduced at the top of the program to reach the bottom (where n is the number of basic blocks in the program), until which point the algorithm won't be able to reach a fixed point. The same effect can be achieved in a single pass by computing the live-in and -out sets in lock-step, because that makes sure that processing of any basic block will pick up the updated live-out sets of the lexically preceding blocks. This gives the dataflow propagation algorithm effectively O(n) run-time instead of O(n^2) in the acyclic case. The time spent in dataflow propagation is reduced by 30x in the GLES31.functional.ssbo.layout.random.all_shared_buffer.5 dEQP test-case on my CHV system (the improvement is likely to be of the same order of magnitude on other platforms). This more than reverses an apparent run-time regression in this test-case from my previous copy-propagation undefined-value handling patch, which was ultimately caused by the additional work introduced in that commit to account for undefined values being multiplied by a huge quadratic factor. According to Chad this test was failing on CHV due to a 30s time-out imposed by the Android CTS (this was the case regardless of my undefined-value handling patch, even though my patch substantially exacerbated the issue). On my CHV system this patch reduces the overall run-time of the test by approximately 12x, getting us to around 13s, well below the time-out. v2: Initialize live-out set to the universal set to avoid rather pessimistic dataflow estimation in shaders with cycles (Addresses performance regression reported by Eero in GpuTest Piano). Performance numbers given above still apply. No shader-db changes with respect to master. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104271 Reported-by: Chad Versace <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
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