[Mesa-dev] [PATCH v2 00/29] nir: Use a 1-bit data type for booleans
Jason Ekstrand
jason at jlekstrand.net
Thu Dec 6 20:27:09 UTC 2018
Ugh... This should not be 29 patches. I used the wrong base. The real
series starts at "nir/algebraic: Optimize x2b(xneg(a)) -> a"
On Thu, Dec 6, 2018 at 1:45 PM Jason Ekstrand <jason at jlekstrand.net> wrote:
> This is a v2 of my series to switch NIR over to 1-bit Booleans. The first
> version of the series can be found here:
>
> https://patchwork.freedesktop.org/series/51351/
>
> Since then, a bit of work has been done on NIR to make the transition a bit
> smoother. Connor rewrote the entire bit-size inference infrastructure in
> nir_algebraic.py to be more dynamic and accurate. On top of that, I
> reworked x2b conversions to work like other conversions and have a sized
> destination instead of having a fixed size on the source and unsized
> destination. This means that switching to 1-bit booleans doesn't involve
> those weird b322x opcodes that were in the first version. A few of the
> patches from the first version have also landed in the intervening time.
>
> Shader-db results on Kaby Lake for the entire series:
>
> total instructions in shared programs: 15072525 -> 14977978 (-0.63%)
> instructions in affected programs: 1178699 -> 1084152 (-8.02%)
> helped: 2126
> HURT: 14
>
> total cycles in shared programs: 369737290 -> 359790175 (-2.69%)
> cycles in affected programs: 127174789 -> 117227674 (-7.82%)
> helped: 2020
> HURT: 325
>
> total loops in shared programs: 4401 -> 4401 (0.00%)
> loops in affected programs: 0 -> 0
> helped: 0
> HURT: 0
>
> total spills in shared programs: 10158 -> 10051 (-1.05%)
> spills in affected programs: 1429 -> 1322 (-7.49%)
> helped: 8
> HURT: 15
>
> total fills in shared programs: 22105 -> 21732 (-1.69%)
> fills in affected programs: 2532 -> 2159 (-14.73%)
> helped: 9
> HURT: 15
>
> I've tried, by adding a lowering pass and enabling it, to ensure that this
> series doesn't break anyone's drivers. However, as with any other core NIR
> rework, please test. I don't have the capability to really test anything
> other than Intel.
>
> Cc: Connor Abbott <cwabbott0 at gmail.com>
> Cc: Timothy Arceri <tarceri at itsqueeze.com>
> Cc: Eric Anholt <eric at anholt.net>
> Cc: Rob Clark <robdclark at gmail.com>
> Cc: Karol Herbst <karolherbst at gmail.com>
> Cc: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>
>
> Jason Ekstrand (28):
> nir/opcodes: Pull in the type helpers from constant_expressions
> nir/opcodes: Rename tbool to tbool32
> nir/algebraic: Clean up some __str__ cruft
> nir/algebraic: Refactor codegen a bit
> nir/algebraic: Add support for unsized conversion opcodes
> nir/opt_algebraic: Simplify an optimization using the new search ops
> nir/opt_algebraic: Drop bit-size suffixes from conversions
> nir/opt_algebraic: Add 32-bit specifiers to a bunch of booleans
> nir: Make boolean conversions sized just like the others
> nir/algebraic: Optimize x2b(xneg(a)) -> a
> nir: Drop support for lower_b2f
> nir/algebraic: Make an optimization more specific
> nir: Rename Boolean-related opcodes to include 32 in the name
> FIXUP: nir/builder: Generate 32-bit bool opcodes transparently
> FIXUP: nir/algebraic: Remap Boolean opcodes to the 32-bit variant
> FIXUP: Use 32-bit opcodes in the NIR producers and optimizations
> FIXUP: Use 32-bit opcodes in the NIR back-ends
> nir/constant_expressions: Rework Boolean handling
> nir: Add support for 1-bit data types
> nir/large_constants: Properly handle 1-bit bools
> nir/algebraic: Generalize an optimization
> nir: Add 1-bit Boolean opcodes
> nir: Add a bool to int32 lowering pass
> glsl,spirv: Generate 1-bit Booleans
> FIXUP: Revert "Use 32-bit opcodes in the NIR producers and
> optimizations"
> FIXUP: Revert "nir/builder: Generate 32-bit bool opcodes
> transparently"
> FIXUP: nir/builder: Generate 1-bit Booleans in nir_build_imm_bool
> nir/algebraic: Optimize 1-bit Booleans
> nir/algebraic: Add some optimizations for D3D-style Booleans
>
> src/amd/common/ac_nir_to_llvm.c | 34 +--
> src/amd/vulkan/radv_shader.c | 2 +
> src/broadcom/compiler/nir_to_vir.c | 52 ++---
> src/broadcom/compiler/vir.c | 2 +
> src/compiler/Makefile.sources | 1 +
> src/compiler/glsl/glsl_to_nir.cpp | 17 +-
> src/compiler/nir/meson.build | 1 +
> src/compiler/nir/nir.c | 15 +-
> src/compiler/nir/nir.h | 31 +--
> src/compiler/nir/nir_algebraic.py | 84 ++++++--
> src/compiler/nir/nir_builder.h | 28 ++-
> src/compiler/nir/nir_constant_expressions.py | 74 +++----
> src/compiler/nir/nir_instr_set.c | 23 +-
> src/compiler/nir/nir_lower_alu_to_scalar.c | 4 +
> src/compiler/nir/nir_lower_bool_to_int32.c | 160 ++++++++++++++
> src/compiler/nir/nir_lower_idiv.c | 2 +-
> src/compiler/nir/nir_lower_int64.c | 2 +-
> .../nir/nir_lower_load_const_to_scalar.c | 3 +
> src/compiler/nir/nir_opcodes.py | 98 ++++++---
> src/compiler/nir/nir_opcodes_c.py | 41 ++--
> src/compiler/nir/nir_opt_algebraic.py | 215 +++++++++---------
> src/compiler/nir/nir_opt_constant_folding.c | 3 +
> src/compiler/nir/nir_opt_if.c | 2 +-
> src/compiler/nir/nir_opt_large_constants.c | 14 +-
> src/compiler/nir/nir_print.c | 3 +
> src/compiler/nir/nir_search.c | 114 +++++++++-
> src/compiler/nir/nir_search.h | 17 +-
> src/compiler/nir/nir_validate.c | 2 +-
> src/compiler/nir_types.cpp | 2 +-
> src/compiler/nir_types.h | 4 +-
> src/compiler/spirv/spirv_to_nir.c | 11 +-
> src/compiler/spirv/vtn_glsl450.c | 4 +-
> src/freedreno/ir3/ir3_compiler_nir.c | 34 +--
> src/gallium/auxiliary/nir/tgsi_to_nir.c | 20 +-
> src/gallium/drivers/radeonsi/si_shader_nir.c | 2 +
> src/gallium/drivers/vc4/vc4_program.c | 50 ++---
> src/intel/compiler/brw_fs_nir.cpp | 85 ++++----
> src/intel/compiler/brw_nir.c | 2 +
> .../brw_nir_analyze_boolean_resolves.c | 24 +--
> src/intel/compiler/brw_vec4_nir.cpp | 123 +++++------
> src/mesa/program/prog_to_nir.c | 4 +-
> 41 files changed, 927 insertions(+), 465 deletions(-)
> create mode 100644 src/compiler/nir/nir_lower_bool_to_int32.c
>
> --
> 2.19.2
>
>
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