<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">Patches 1-5, 8-11, and 13-18 are</div><div class="gmail_quote"> </div><div class="gmail_quote">Reviewed-by: Jason Ekstrand <<a href="mailto:jason@jlekstrand.net" target="_blank">jason@jlekstrand.net</a>> </div><div class="gmail_quote"> </div><div class="gmail_quote">On Mon, Oct 16, 2017 at 8:23 AM, Pohjolainen, Topi <<a href="mailto:topi.pohjolainen@gmail.com" target="_blank">topi.pohjolainen@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Mon, Oct 16, 2017 at 08:03:41AM -0700, Jason Ekstrand wrote: > FYI: I'm planning to review this some time this week. Probably not today > though. Great, I was hoping you would. I'm just reading out of curiosity and asking random questions. Mostly trying to remind myself how compiler works :) It has been a while since I had anything to do with it. <div class="m_2609201209543599080m_-8195904180398590224m_-6918157190168337084m_-5568321652175834147HOEnZb"><div class="m_2609201209543599080m_-8195904180398590224m_-6918157190168337084m_-5568321652175834147h5"> > > On Thu, Oct 12, 2017 at 11:37 AM, Jose Maria Casanova Crespo < > <a href="mailto:jmcasanova@igalia.com" target="_blank">jmcasanova@igalia.com</a>> wrote: > > > Hello, > > > > this is the V3 series for the implementation of the > > SPV_KHR_16bit_storage and VK_KHR_16bit_storage extensions on the anv > > vulkan driver, in addition to the GLSL and NIR support needed. > > > > The original series can be found here [1], and the V2 is available > > here [2]. > > > > In short V3 includes the following: > > > > * Updates on several patches after the review of the V2 series. > > This includes some squashes, and specially changes so 16-bit > > types are always packed, not using stride 2 by default. > > This implied a re-implementation of all load_input/store_output > > intrinsics for 16-bit. New solution shuffles and unshuffles > > 16-bit components in 32-bit URB write and read operations. This > > saves space in the URB writes and reduces the register pressure > > just using half of the space. > > > > * 5 patches have been removed from v2 series because now we not > > assume the stride 2 for 16-bit registers. We also removed the > > patch of reuse_16bit_conversion_register. The problems related > > to spilling that motivate that patch were better addressed by > > Curro's liveness patch. > > > > i965/fs: Set stride 2 when dealing with 16-bit floats/ints > > i965/fs: Retype 16-bit/stride2 movs to UD on nir_op_vecX > > i965/fs: Need to allocate as minimum 32-bit register > > i965/fs: Update assertion on copy propagation > > i965/fs: Add reuse_16bit_conversions_register optimization > > > > Finally an updated overview of the patches: > > > > Patches 1-2 add 16-bit float, int and uint types to GLSL. This is > > needed because NIR uses GLSL types internally. We use the enums > > already defined at AMD_gpu_shader_half_float and NV_gpu_shader > > extensions. Patch 4 updates mesa/st, in order to avoid warnings for > > types not handled on a switch. > > > > Patches 3-6 add NIR support for those new GLSL 16-bit types, > > conversion opcodes, and rounding modes for float to half-float > > conversions. > > > > Patches 7-9 add the SPIR-V (SPV_KHR_16bit_storage) to NIR support. > > > > Patches 10-13 add general 16-bit support for i965. This includes > > handling of new types on several general purpose methods, > > update/remove some asserts. > > > > Patches 14-18 add support for 32 to 16-bit conversions for i965, > > including rounding mode opcodes (needed for float to half-float > > conversions), and an optimization that removes superfluous rounding > > mode sets. > > > > Patch 19 adds 16-bit support for constant location. > > > > Patches 20-24 add and use two new messages: byte scattered read and > > write. Those were needed because untyped surface message has a fixed > > 32-bit write size. Those messages are used on the 16-bit support of > > store SSBO, load SSBO, load UBO and load shared. > > > > Patches 25-29 implement 16-bit vertex attribute inputs support on > > i965. These include changes on anv. This was needed because 16-bit > > surface formats do implicit conversion to 32-bit. To workaround this, > > we override the 16-bit surface format, and use 32-bit ones. > > > > Patch 30 implements load input and load store for all intra stage. > > This patch substitutes the previous simple patch i965/fs: Set stride 2 > > when dealing with 16-bit floats/ints. > > > > Patch 31-37 implements 16-bit store output support for fragment > > shaders on i965. > > > > Patches 38-41 are the new patches included in V2. Three of them are > > improvements over V1 that doesn't fix any execution problem, but they > > improve performance reducing the use of multiple scattered messages > > for untyped read/write opreations. 16bit CTS tests passes without them. > > The other one would fix a real problem (patch 41), but unfourtunately > > no CTS test yet catching it. > > > > Patches 42-43 enable both extensions on anv vulkan driver. > > > > [1] <a href="https://lists.freedesktop.org/archives/mesa-dev/2017-July/162791.html" rel="noreferrer" target="_blank">https://lists.freedesktop.org/archives/mesa-dev/2017-July/162791.html</a> > > [2] <a href="https://lists.freedesktop.org/archives/mesa-dev/2017-August/" rel="noreferrer" target="_blank">https://lists.freedesktop.org/archives/mesa-dev/2017-August/</a> > > 167455.html > > > > Alejandro Piñeiro (14): > > i965/vec4: Handle 16-bit types at type_size_xvec4 > > i965/fs: Add brw_reg_type_from_bit_size utility method > > i965/fs: Remove BRW_REGISTER_TYPE_HF assert at get_exec_type > > i965/fs: Handle 32-bit to 16-bit conversions > > i965/fs: Define new shader opcode to set rounding modes > > i965/fs: Enable rounding mode on f2f16 ops > > i965/fs: Add remove_extra_rounding_modes optimization > > i965/fs: Adjust type_size/type_slots on store_ssbo > > i965/fs: Use byte_scattered_write on 16-bit store_ssbo > > anv/pipeline: Use 32-bit surface formats for 16-bit formats > > anv/cmd_buffer: Add a padding to the vertex buffer > > i965/fs: Use half_precision data_format on 16-bit fb writes > > i965/fs: Predicate byte scattered writes if needed > > anv: Enable VK_KHR_16bit_storage > > > > Eduardo Lima Mitev (8): > > glsl: Add 16-bit types > > mesa/st: Handle 16-bit types at st_glsl_storage_type_size() > > nir: Add support for 16-bit types (half float, int16 and uint16) > > nir: Populate conversion opcodes to/from 16-bit types > > spirv/nir: Handle 16-bit types > > spirv/nir: Add support for SPV_KHR_16bit_storage > > i965/fs: Optimize 16-bit SSBO stores by packing two into a 32-bit reg > > anv: Enable SPV_KHR_16bit_storage on gen 8+ > > > > Jose Maria Casanova Crespo (21): > > nir: Add rounding modes enum > > nir: Handle fp16 rounding modes at nir_type_conversion_op > > spirv: Enable FPRoundingMode decorator to nir operations > > i965: Support for 16-bit base types in helper functions > > i965: Add support for control register > > i965/fs: Support push constants of 16-bit types > > i965/fs: Add byte scattered write message and fs support > > i965/fs: Add byte scattered read message and fs support > > i965/fs: Use byte scattered read > > compiler: Mark when input/ouput attribute at VS uses 16-bit > > i965/compiler: includes 16-bit vertex input > > i965/fs: Unpack 16-bit from 32-bit components in VS load_input > > i965/fs: Support 16-bit types at load_input and store_output > > i965/fs: Enable Render Target Write for 16-bit outputs > > i965/fs: Include support for SEND data_format bit for Render Targets > > i965/disasm: Show half-precision data_format on rt_writes > > i965/fs: Mark 16-bit outputs on FS store_output > > i965/fs: 16-bit source payloads always use 1 register > > i965/fs: Enable 16-bit render target write on SKL and CHV > > i965/fs: Enables 16-bit load_ubo with sampler > > i965/fs: Use untyped_surface_read for 16-bit load_ssbo > > > > src/compiler/builtin_type_macros.h | 26 ++ > > src/compiler/glsl/ast_to_hir.cpp | 3 + > > src/compiler/glsl/glsl_to_nir.cpp | 9 +- > > src/compiler/glsl/ir_clone.cpp | 3 + > > src/compiler/glsl/link_uniform_initializers.cpp | 3 + > > src/compiler/glsl/lower_buffer_access.cpp | 3 +- > > src/compiler/glsl_types.cpp | 93 ++++- > > src/compiler/glsl_types.h | 34 +- > > src/compiler/nir/nir.c | 6 + > > src/compiler/nir/nir.h | 22 +- > > src/compiler/nir/nir_gather_info.c | 23 +- > > src/compiler/nir/nir_opcodes.py | 10 +- > > src/compiler/nir/nir_opcodes_c.py | 17 +- > > src/compiler/nir/nir_split_var_copies.c | 6 + > > src/compiler/nir_types.cpp | 24 ++ > > src/compiler/nir_types.h | 9 + > > src/compiler/shader_info.h | 2 + > > src/compiler/spirv/nir_spirv.h | 1 + > > src/compiler/spirv/spirv_to_nir.c | 53 ++- > > src/compiler/spirv/vtn_alu.c | 34 +- > > src/compiler/spirv/vtn_variables.c | 21 ++ > > src/intel/compiler/brw_compiler.h | 1 + > > src/intel/compiler/brw_disasm.c | 4 + > > src/intel/compiler/brw_eu.h | 23 +- > > src/intel/compiler/brw_eu_defines.h | 36 ++ > > src/intel/compiler/brw_eu_emit.c | 188 +++++++++- > > src/intel/compiler/brw_fs.cpp | 128 ++++++- > > src/intel/compiler/brw_fs.h | 12 + > > src/intel/compiler/brw_fs_copy_propagation.cpp | 8 +- > > src/intel/compiler/brw_fs_generator.cpp | 28 +- > > src/intel/compiler/brw_fs_nir.cpp | 458 > > ++++++++++++++++++++++-- > > src/intel/compiler/brw_fs_surface_builder.cpp | 32 +- > > src/intel/compiler/brw_fs_surface_builder.h | 14 + > > src/intel/compiler/brw_fs_visitor.cpp | 6 + > > src/intel/compiler/brw_inst.h | 1 + > > src/intel/compiler/brw_ir_fs.h | 3 - > > src/intel/compiler/brw_nir.c | 16 + > > src/intel/compiler/brw_reg.h | 6 + > > src/intel/compiler/brw_shader.cpp | 23 ++ > > src/intel/compiler/brw_shader.h | 7 + > > src/intel/compiler/brw_vec4.cpp | 1 + > > src/intel/compiler/brw_vec4_generator.cpp | 3 +- > > src/intel/compiler/brw_vec4_visitor.cpp | 3 + > > src/intel/vulkan/anv_device.c | 13 + > > src/intel/vulkan/anv_extensions.py | 1 + > > src/intel/vulkan/anv_pipeline.c | 1 + > > src/intel/vulkan/genX_cmd_buffer.c | 20 +- > > src/intel/vulkan/genX_pipeline.c | 47 +++ > > src/mesa/program/ir_to_mesa.cpp | 6 + > > src/mesa/state_tracker/st_glsl_types.cpp | 3 + > > 50 files changed, 1403 insertions(+), 91 deletions(-) > > > > -- > > 2.13.6 > > > > _______________________________________________ > > mesa-dev mailing list > > <a href="mailto:mesa-dev@lists.freedesktop.org" target="_blank">mesa-dev@lists.freedesktop.org</a> > > <a href="https://lists.freedesktop.org/mailman/listinfo/mesa-dev" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/mesa-dev</a> > > > _______________________________________________ > mesa-dev mailing list > <a href="mailto:mesa-dev@lists.freedesktop.org" target="_blank">mesa-dev@lists.freedesktop.org</a> > <a href="https://lists.freedesktop.org/mailman/listinfo/mesa-dev" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/mesa-dev</a> </div></div></blockquote></div> </div></div>