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* docs: add release notes for 13.0.3Emil Velikov2017-01-051-0/+176
| | | | | Signed-off-by: Emil Velikov <[email protected]> (cherry picked from commit bec04114d2612042bdf61183cfa3416b3a643b68)
* st/va: fix incorrect argument in vl_compositor_cleanupNayan Deshmukh2017-01-051-1/+1
| | | | | | | | This fixes the mistake introduced in commit b6737a8bcd03ea68952799144c0c6e6e6679bee9 Signed-off-by: Nayan Deshmukh <[email protected]> Reviewed-by: Christian König <[email protected]>
* swr: remove unneeded llvm version checkTim Rowley2017-01-051-4/+0
| | | | | | | Old test caused breakage with llvm-svn (4.0.0svn), and not needed as the minimum required llvm version for swr is 3.6. Reviewed-by: George Kyriazis <[email protected]>
* swr: fix windows build breakGeorge Kyriazis2017-01-052-4/+7
| | | | | | | | | | wrap lp_bld_type.h around extern "C". Windows decorates global variables, so when used from .cpp files, need to use an undecorated version. Also, removed related and unneeded code from swr_screen.cpp Reviewed-by: Ilia Mirkin <[email protected]>
* radeonsi: update clip_regs if clip_disable changes to fix a hangMarek Olšák2017-01-051-0/+5
| | | | | | | | | | | | | | This seems to fix the GPU hangs caused by: commit ed3190b3f3a776fc8c75b1e6130a88079166d115 Author: Marek Olšák <[email protected]> Date: Sun Nov 13 18:41:43 2016 +0100 radeonsi: don't export ClipVertex and ClipDistance[] if clipping is disabled Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99219 Tested-by: Samuel Pitoiset <[email protected]>
* st/mesa: enable GLSLOptimizeConservatively for drivers that want itMarek Olšák2017-01-051-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | GLSL compilation now takes 24% less time with the Gallium noop driver. I used my shader-db for the measurement. The difference for the whole radeonsi driver can be ~10%. The generated TGSI is mostly the same. For example, the compilation success rate with a TGSI->GCN bytecode converter without any optimizations is the same. Note that glsl_to_tgsi does its own copy propagation and simple register allocation. shader-db GCN report: - Talos spills fewer SGPRs. - DOTA 2 spills more SGPRs. - The average shader-db score is better, but it's just due to randomness. 29045 shaders in 17564 tests Totals: SGPRS: 1325929 -> 1325017 (-0.07 %) VGPRS: 1010808 -> 1010172 (-0.06 %) Spilled SGPRs: 1432 -> 1399 (-2.30 %) Spilled VGPRs: 93 -> 92 (-1.08 %) Private memory VGPRs: 688 -> 688 (0.00 %) Scratch size: 2540 -> 2484 (-2.20 %) dwords per thread Code Size: 39336732 -> 39342936 (0.02 %) bytes Max Waves: 217937 -> 217969 (0.01 %) Reviewed-by: Eric Anholt <[email protected]>
* glsl_to_tgsi: do fewer optimizations with GLSLOptimizeConservativelyMarek Olšák2017-01-051-9/+67
| | | | Reviewed-by: Eric Anholt <[email protected]>
* mesa: add gl_constants::GLSLOptimizeConservativelyMarek Olšák2017-01-054-10/+37
| | | | | | to reduce the amount of GLSL optimizations for drivers that can do better. Reviewed-by: Eric Anholt <[email protected]>
* gallium: add PIPE_CAP_GLSL_OPTIMIZE_CONSERVATIVELYMarek Olšák2017-01-0517-0/+19
| | | | | | Drivers with good compilers don't need aggressive optimizations before TGSI. Reviewed-by: Eric Anholt <[email protected]>
* glsl: run do_lower_jumps properly in do_common_optimizationsMarek Olšák2017-01-053-10/+3
| | | | | | so that backends don't have to run it manually Reviewed-by: Eric Anholt <[email protected]>
* i965: Print VS output VUE map in Vulkan too.Kenneth Graunke2017-01-052-3/+5
| | | | | | | We need to move this to the shared layer. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Timothy Arceri <[email protected]>
* i965: Fix last slot calculationsKenneth Graunke2017-01-051-3/+13
| | | | | | | | | | | | | | | | | | If the VUE map has slots at the end which the shader does not write, then we'd "flush" (constructing an URB write) on the last output it actually wrote. Then, we'd construct another SEND with EOT, but with no actual payload data. That's not legal. For example, SSO programs have clip distance slots allocated no matter what, but the shader may not write them. If it doesn't write any user defined varyings, then the clip distance slots will be the last ones. Found while debugging dEQP-VK.tessellation.shader_input_output.gl_position_vs_to_tcs_to_tes Cc: [email protected] Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Timothy Arceri <[email protected]>
* docs: Mark GL_ARB_gpu_shader_fp64 and OpenGL 4.0 as done for i965/hsw+Iago Toral Quiroga2017-01-051-2/+2
| | | | Acked-by: Kenneth Graunke <[email protected]>
* docs: add GL_ARB_gpu_shader_fp64 and OpenGL 4.0 support for Intel Haswell.Iago Toral Quiroga2017-01-051-0/+2
| | | | Reviewed-by: Tapani Pälli <[email protected]>
* i965: add a kernel_features bitfield to intel screenIago Toral Quiroga2017-01-055-22/+59
| | | | | | | | | | | We can use this to track various features that may or may not be supported by the hw / kernel. Currently, we usually do this by checking the generation and supported command parser versions in various places thoughtout the driver code. With this patch, we centralize all these checks in just once place at screen creation time, then we just query the bitfield wherever we need to check if a particular feature is supported. Reviewed-by: Kenneth Graunke <[email protected]>
* i965/gen7: Enable OpenGL 4.0 in Haswell when supportedIago Toral Quiroga2017-01-052-1/+4
| | | | Reviewed-by: Kenneth Graunke <[email protected]>
* i965: get rid of brw->can_do_pipelined_register_writesIago Toral Quiroga2017-01-055-10/+10
| | | | | | Instead, check the screen field directly. Reviewed-by: Kenneth Graunke <[email protected]>
* i965: Move the pipelined test for SO register access to the screenChris Wilson2017-01-054-73/+103
| | | | | | | | | | | | Moving the test to the screen places it alongside the other global HW feature tests that want to be shared between contexts. Also, we need to know if we support pipelined register writes at screen creation time so that we can tell if we can expose OpenGL 4.0 in gen7. Signed-off-by: Chris Wilson <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* i965/disasm: remove printing hstride and width in align16 DF source regionsSamuel Iglesias Gonsálvez2017-01-051-4/+1
| | | | | Signed-off-by: Samuel Iglesias Gonsálvez <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* vec4: use DIM instruction when loading DF immediates in HSWSamuel Iglesias Gonsálvez2017-01-051-0/+9
| | | | | Signed-off-by: Samuel Iglesias Gonsálvez <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* glcpp: Remove illegal characters from testsCarl Worth2017-01-046-6/+6
| | | | | | | | | Some of the existing tests were using '@' and '"' incidentally within the test body. Neither of these characters are actually legal for GLSL. And since we are planning to start generating errors for illegal characters, we need to first make the test suite clean. Reviewed-by: Kenneth Graunke <[email protected]>
* glcpp: Exhaustively test all legal characters in GLSLCarl Worth2017-01-042-0/+154
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here, each legal character (as defined by GLSL Language Specification version 4.30.6, section 3.1) appears at least once in the input file. Obviously, characters with special meaning (like '#' and '\') aren't treated exhaustively with respect to all their possible uses. We have many other tests for that. Here, we're simply ensuring that the test suite sees every legal character at least once. v2 (by Ken): Fix expectations, move to src/compiler, renumber tests. Carl's .expected: Updated .expected: .. .. . . . . . . . . . . . . . . . . . .. . . . . . (For some reason, the original test expected ".." to produce two lines. glcpp, cpp, and mcpp all follow my updated behavior, so I believe it to be correct.) Reviewed-by: Kenneth Graunke <[email protected]>
* glcpp: Allow vertical tab and form feed characters in GLSLCarl Worth2017-01-041-1/+1
| | | | | | | | | | | | | | | | | | | | Of course, these aren't really useful for anything, but the GLSL language specification does allow them: The source character set used for the OpenGL shading languages, outside of comments, is a subset of UTF-8. It includes the following characters: ... White space: the space character, horizontal tab, vertical tab, form feed, carriage-return, and line- feed. [GLSL Language Specification 4.30.6, section 3.1] So treat vertical tab ('\v' or ^K) and form-feed ('\f' or ^L) as horizontal space characters. Reviewed-by: Kenneth Graunke <[email protected]>
* glcpp: Add testing for no space between macro name and replacement listCarl Worth2017-01-042-0/+116
| | | | | | | | | | | | | | | | | | | | | | | | | | | GCC's preprocessor accepts a macro definition where there is no space between the macro's identifier name and the replacementlist. (GCC does emit a "missing space" warning that we don't, but that's fine.) This is an exhaustive test that verifies that all legal GLSL characters that could possibly be interpreted as separating the macro name from the replacement list are interpreted as such. So the testing here includes all valid GLSL symbols except for: * Characters that can be part of an identifier (a-z, A-Z, 0-9, _) * Backslash, (allowed only as line continuation) * Hash, (allowed only to introduce pre-processor directive, or as part of a paste operator in a replacement list---but not as first token of replacement list) * Space characters (since the point of the testing is to have missing space) * Left parenthesis (which would indicate a function-like macro) v2 (Ken): Move to src/compiler, renumber tests. Reviewed-by: Kenneth Graunke <[email protected]>
* spirv: compute push constant access offset & rangeLionel Landwerlin2017-01-042-14/+65
| | | | | | | | v2: Move relative push constant relative offset computation down to _vtn_load_store_tail() (Jason) Signed-off-by: Lionel Landwerlin <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* spirv: move block_size() definitionLionel Landwerlin2017-01-041-48/+48
| | | | | Signed-off-by: Lionel Landwerlin <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* va: call texture_get_handle while the mutex is being heldMarek Olšák2017-01-041-2/+5
| | | | | | | The context may be used by texture_get_handle. Reviewed-by: Christian König <[email protected]> Cc: 13.0 <[email protected]>
* vdpau: call texture_get_handle while the mutex is being heldMarek Olšák2017-01-042-6/+13
| | | | | | | | | The context may be used by texture_get_handle. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99158 Reviewed-by: Christian König <[email protected]> Cc: 13.0 <[email protected]>
* radeonsi: capitalize VM hex addr when dumping buffer listSamuel Pitoiset2017-01-041-1/+1
| | | | | | | | Useful when debugging with R600_DEBUG=vm,check_vm to match addr in both outputs. Signed-off-by: Samuel Pitoiset <[email protected]> Reviewed-by: Marek Olšák <[email protected]>
* i965: remove unused brwInitVtbl declarationTapani Pälli2017-01-041-5/+0
| | | | | | | function was removed by b3360d23ac1db61390b2ac8963756c6133ba6e23 Signed-off-by: Tapani Pälli <[email protected]> Reviewed-by: Timothy Arceri <[email protected]>
* i965: remove brw_context dependency from intel_batchbuffer_init()Iago Toral Quiroga2017-01-043-28/+36
| | | | Reviewed-by: Kenneth Graunke <[email protected]>
* i965: make intel_batchbuffer_free() take a batchbuffer as argumentIago Toral Quiroga2017-01-043-6/+6
| | | | Reviewed-by: Kenneth Graunke <[email protected]>
* i965: make intel_batchbuffer_emit_dword() take a batchbuffer as argumentIago Toral Quiroga2017-01-042-12/+12
| | | | Reviewed-by: Kenneth Graunke <[email protected]>
* i965: Make intel_bachbuffer_reloc() take a batchbuffer argumentIago Toral Quiroga2017-01-043-15/+15
| | | | Reviewed-by: Kenneth Graunke <[email protected]>
* nir: fix loop iteration count calculation for floatsTimothy Arceri2017-01-041-2/+2
| | | | | | | | | | | | Fixes performance regression in SynMark PSPom caused by loops with float counters not always unrolling. For example: for (float i = 0.02; i < 0.9; i += 0.11) ... Reviewed-by: Jason Ekstrand <[email protected]>
* gallium/hud: add a path separator between dump directory and filenameEdmondo Tommasina2017-01-031-1/+2
| | | | | | | It's more user friendly and it avoids to write files in unexpected places. Signed-off-by: Marek Olšák <[email protected]>
* r600/sb: Fix loop optimization related hangs on egHeiko Przybyl2017-01-036-30/+68
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make sure unused ops and their references are removed, prior to entering the GCM (global code motion) pass, to stop GCM from breaking the loop logic and thus hanging the GPU. Turns out, that sb has problems with loops and node optimizations regarding associative folding: - the global code motion (gcm) pass moves ops up a loop level/basic block until they've fulfilled their total usage count - if there are ops folded into others, the usage count won't be fulfilled and thus the op moved way up to the top - within GCM the op would be visited and their deps would be moved alongside it, to fulfill the src constaints - in a loop, an unused op is moved out of the loop and GCM would move the src value ops up as well - now here arises the problem: if the loop counter is one of the src values it would get moved up as well, the loop break condition would never get hit and the shader turn into an endless loop, resulting in the GPU hanging and being reset A reduced (albeit nonsense) piglit example would be: [require] GLSL >= 1.20 [fragment shader] uniform int SIZE; uniform vec4 lights[512]; void main() { float x = 0; for(int i = 0; i < SIZE; i++) x += lights[2*i+1].x; } [test] uniform int SIZE 1 draw rect -1 -1 2 2 Which gets optimized to: ===== SHADER #12 OPT ================================== PS/BARTS/EVERGREEN ===== ===== 42 dw ===== 1 gprs ===== 2 stack ========================================= ALU 3 @24 1 y: MOV R0.y, 0 t: MULLO_UINT R0.w, [0x00000002 2.8026e-45].x, R0.z LOOP_START_DX10 @22 PUSH @6 ALU 1 @30 KC0[CB0:0-15] 2 M x: PRED_SETGE_INT __.x, R0.z, KC0[0].x JUMP @14 POP:1 LOOP_BREAK @20 POP @14 POP:1 ALU 2 @32 3 x: ADD_INT R0.x, R0.w, [0x00000002 2.8026e-45].x TEX 1 @36 VFETCH R0.x___, R0.x, RID:0 MFC:16 UCF:0 FMT[..] ALU 1 @40 4 y: ADD R0.y, R0.y, R0.x LOOP_END @4 EXPORT_DONE PIXEL 0 R0.____ EOP ===== SHADER_END =============================================================== Notice R0.z being the loop counter/break condition relevant register and being never incremented at all. Also some of the loop content has been moved out of it, to fulfill the requirements for the one unused op. With a debug build of mesa this would produce an error like error at : PRED_SETGE_INT __, __, EM.2, R1.x.2||[email protected], C0.x : operand value R1.x.2||[email protected] was not previously written to its gpr and the compilation would fail due to this. On a release build it gets passed to the GPU. When using this patch, the loop remains intact: ===== SHADER #12 OPT ================================== PS/BARTS/EVERGREEN ===== ===== 48 dw ===== 1 gprs ===== 2 stack ========================================= ALU 2 @24 1 y: MOV R0.y, 0 z: MOV R0.z, 0 LOOP_START_DX10 @22 PUSH @6 ALU 1 @28 KC0[CB0:0-15] 2 M x: PRED_SETGE_INT __.x, R0.z, KC0[0].x JUMP @14 POP:1 LOOP_BREAK @20 POP @14 POP:1 ALU 4 @30 3 t: MULLO_UINT T0.x, [0x00000002 2.8026e-45].x, R0.z 4 x: ADD_INT R0.x, T0.x, [0x00000002 2.8026e-45].x TEX 1 @40 VFETCH R0.x___, R0.x, RID:0 MFC:16 UCF:0 FMT[..] ALU 2 @44 5 y: ADD R0.y, R0.y, R0.x z: ADD_INT R0.z, R0.z, 1 LOOP_END @4 EXPORT_DONE PIXEL 0 R0.____ EOP ===== SHADER_END =============================================================== Piglit: ./piglit summary console -d results/*_gpu_noglx name: unpatched_gpu_noglx patched_gpu_noglx ---- ------------------- ----------------- pass: 18016 18021 fail: 748 743 crash: 7 7 skip: 1124 1124 timeout: 0 0 warn: 13 13 incomplete: 0 0 dmesg-warn: 0 0 dmesg-fail: 0 0 changes: 0 5 fixes: 0 5 regressions: 0 0 total: 19908 19908 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94900 Tested-by: Heiko Przybyl <[email protected]> Tested-on: Barts PRO HD6850 Signed-off-by: Heiko Przybyl <[email protected]> Signed-off-by: Marek Olšák <[email protected]>
* editorconfig: Fix up the tab rendering width.Eric Anholt2017-01-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Our editorconfig file looked sensible, saying that we wanted to indent with spaces and use 3/4/whatever space indentation. However, the spec has this little surprise: "tab_width: a whole number defining the number of columns used to represent a tab character. This defaults to the value of indent_size and doesn't usually need to be specified." so once my editor started respecting editorconfig, the files that have tabs left in them started getting rendered wrong, showing up like this in brw_program.c: case GL_COMPUTE_PROGRAM_NV: { struct brw_program *prog = rzalloc(NULL, struct brw_program); if (prog) { prog->id = get_new_program_id(brw->screen); return _mesa_init_gl_program(&prog->program, target, id); } else return NULL; } Reviewed-by: Ilia Mirkin <[email protected]>
* meta: Disable dithering during glGenerateMipmapChad Versace2017-01-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | Fixes tests 'dEQP-GLES3.functional.texture.mipmap.*.generate.rgba5551*' on Intel Broadwell 0x1616. The GL 4.5 spec describes the algorithm of glGenerateMipmap as: The contents of the derived images are computed by repeated, filtered reduction of the level base image. [...] No particular filter algorithm is required, though a box filter is recommended as the default filter. Consider a texture for which all pixels are identical at level 0. From the spec's description above, one may reasonably assume that the "filtered reduction" of level 0 produces a new miplevel for which again all pixels are identical. For any 2x2 subspan of identical pixels, it is difficult to see how the "filtered reduction" of that subspan can produce a pixel that differs from the source pixels. Dithering during _mesa_meta_GenerateMipmap() violated that reasonable assumption. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99210 Reviewed-by: Kenneth Graunke <[email protected]> Cc: [email protected]
* doc/features.txt: update for freedrenoRomain Failliot2017-01-031-19/+19
| | | | | | | | I lost track of who created initial patch (Ilia?).. Romain rebased it. I pushed it. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=95460 Signed-off-by: Rob Clark <[email protected]>
* i965: Remove perf monitor/query backendRobert Bragg2017-01-036-1597/+1
| | | | | | | | | | | | | | | | | | | | In its current state the unified i965 backend for AMD_performance_monitor and INTEL_performance_query isn't able to report meaningful Observation Architecture metrics since we haven't so far had the necessary kernel support to fully configure the OA unit, nor the corresponding support for normalizing the counters into a form that can be usefully interpreted by application developers (as opposed to raw values that may, for example, scale by the number of EUs there are). So that we can focus on implementing just one of these extensions fully and since we anticipate some significant backend changes as we look to use a new kernel interface to configure the OA unit, this patch removes the current backend. This will simplify our ability to update the frontend infrastructure and backend interface before updating our support for performance counters. Signed-off-by: Robert Bragg <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* vl/zscan: fix "Fix trivial sign compare warnings"Christian König2017-01-031-1/+1
| | | | | | | | | | | The variable actually needs to be signed, otherwise converting it to a float doesn't work as expected. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=98914 Signed-off-by: Christian König <[email protected]> Reviewed-by: Nayan Deshmukh <[email protected]> Cc: "13.0" <[email protected]> Fixes: 1fb4179f927 ("vl: Fix trivial sign compare warnings")
* st/va: error handlingNayan Deshmukh2017-01-031-3/+15
| | | | | | | | handle the cases when vl_compositor_set_csc_matrix(), vl_compositor_init_state() and vl_compositor_init() fail Signed-off-by: Nayan Deshmukh <[email protected]> Reviewed-by: Christian König <[email protected]>
* st/vdpau: error handlingNayan Deshmukh2017-01-033-15/+50
| | | | | | | | handle the cases when vl_compositor_set_csc_matrix(), vl_compositor_init_state() and vl_compositor_init() fail Signed-off-by: Nayan Deshmukh <[email protected]> Reviewed-by: Christian König <[email protected]>
* vl/compositor: implement error handlingNayan Deshmukh2017-01-032-3/+12
| | | | | | | pipe_buffer_map and pipe_buffer_create may return NULL Signed-off-by: Nayan Deshmukh <[email protected]> Reviewed-by: Christian König <[email protected]>
* i965/vec4: enable ARB_gpu_shader_fp64 for HaswellIago Toral Quiroga2017-01-031-0/+3
| | | | Reviewed-by: Matt Turner <[email protected]>
* i965/vec4: adjust spilling costs for 64-bit registers.Iago Toral Quiroga2017-01-031-2/+13
| | | | Reviewed-by: Matt Turner <[email protected]>
* i965/vec4: prevent spilling of DOUBLE_TO_SINGLE destinationIago Toral Quiroga2017-01-031-0/+12
| | | | | | | | | | | | | | | | | | | | | FROM_DOUBLE opcodes are setup so that they use a dst register with a size of 2 even if they only produce a single-precison result (this is so that the opcode can use the larger register to produce a 64-bit aligned intermediary result as required by the hardware during the conversion process). This creates a problem for spilling though, because when we attempt to emit a spill for the dst we see a 32-bit destination and emit a scratch write that allocates a single spill register, making the intermediary writes go beyond the size of the allocation. Prevent this by avoiding to spill the destination register of these opcodes. Alternatively, we can avoid this by splitting the opcode in two: one that produces a 64-bit aligned result and one that takes the 64-bit aligned result as input and produces a 32-bit result from it. Reviewed-by: Matt Turner <[email protected]>
* i965/vec4: avoid spilling of registers that mix 32-bit and 64-bit accessIago Toral Quiroga2017-01-031-0/+24
| | | | | | | | | | | | | | | | | | | | When 64-bit registers are (un)spilled, we need to execute data shuffling code before writing to or after reading from memory. If we have instructions that operate on 64-bit data via 32-bit instructions, (un)spills for the register produced by 32-bit instructions will not do data shuffling at all (because we only see a normal 32-bit istruction seemingly operating on 32-bit data). This means that subsequent reads with that register using DF access will unshuffle data read from memory that was never adequately shuffled when it was written. Fixing this would require to identify which 32-bit instructions write 64-bit data and emit spill instructions only when the full 64-bit data has been written (by multiple 32-bit instructions writing to different offsets of the same register) and always emit 64-bit unspills whenever 64-bit data is read, even when the instruction uses a 32-bit type to read from them. Reviewed-by: Matt Turner <[email protected]>
* i965/vec4: support basic spilling of 64-bit registersIago Toral Quiroga2017-01-031-6/+28
| | | | | | | | | | | | | | | The current spilling code can't spill vgrf allocations larger than 1 but SIMD4x2 doubles require 2 vgrfs, so we need to permit this case (which is handled properly for DF data types by emitting 2 scratch messages and doing data shuffling). We accomplish this by not auto-disabling spilling for vgrf allocations with a size of 2, and then disable spilling on any register with an offset != 0B (which indicates array access). Disable spilling of partial DF reads/writes because these don't read/write data for both logical threads and our scratch messages for 64-bit data need data for both threads to be present. Reviewed-by: Matt Turner <[email protected]>
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