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Diffstat (limited to 'src/glsl/nir/nir_opt_algebraic.py')
| -rw-r--r-- | src/glsl/nir/nir_opt_algebraic.py | 285 |
1 files changed, 0 insertions, 285 deletions
diff --git a/src/glsl/nir/nir_opt_algebraic.py b/src/glsl/nir/nir_opt_algebraic.py deleted file mode 100644 index 7745b76f7ce..00000000000 --- a/src/glsl/nir/nir_opt_algebraic.py +++ /dev/null @@ -1,285 +0,0 @@ -#! /usr/bin/env python -# -# Copyright (C) 2014 Intel Corporation -# -# Permission is hereby granted, free of charge, to any person obtaining a -# copy of this software and associated documentation files (the "Software"), -# to deal in the Software without restriction, including without limitation -# the rights to use, copy, modify, merge, publish, distribute, sublicense, -# and/or sell copies of the Software, and to permit persons to whom the -# Software is furnished to do so, subject to the following conditions: -# -# The above copyright notice and this permission notice (including the next -# paragraph) shall be included in all copies or substantial portions of the -# Software. -# -# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL -# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING -# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS -# IN THE SOFTWARE. -# -# Authors: -# Jason Ekstrand ([email protected]) - -import nir_algebraic - -# Convenience variables -a = 'a' -b = 'b' -c = 'c' -d = 'd' - -# Written in the form (<search>, <replace>) where <search> is an expression -# and <replace> is either an expression or a value. An expression is -# defined as a tuple of the form (<op>, <src0>, <src1>, <src2>, <src3>) -# where each source is either an expression or a value. A value can be -# either a numeric constant or a string representing a variable name. -# -# Variable names are specified as "[#]name[@type]" where "#" inicates that -# the given variable will only match constants and the type indicates that -# the given variable will only match values from ALU instructions with the -# given output type. -# -# For constants, you have to be careful to make sure that it is the right -# type because python is unaware of the source and destination types of the -# opcodes. - -optimizations = [ - (('fneg', ('fneg', a)), a), - (('ineg', ('ineg', a)), a), - (('fabs', ('fabs', a)), ('fabs', a)), - (('fabs', ('fneg', a)), ('fabs', a)), - (('iabs', ('iabs', a)), ('iabs', a)), - (('iabs', ('ineg', a)), ('iabs', a)), - (('fadd', a, 0.0), a), - (('iadd', a, 0), a), - (('usadd_4x8', a, 0), a), - (('usadd_4x8', a, ~0), ~0), - (('fadd', ('fmul', a, b), ('fmul', a, c)), ('fmul', a, ('fadd', b, c))), - (('iadd', ('imul', a, b), ('imul', a, c)), ('imul', a, ('iadd', b, c))), - (('fadd', ('fneg', a), a), 0.0), - (('iadd', ('ineg', a), a), 0), - (('iadd', ('ineg', a), ('iadd', a, b)), b), - (('iadd', a, ('iadd', ('ineg', a), b)), b), - (('fadd', ('fneg', a), ('fadd', a, b)), b), - (('fadd', a, ('fadd', ('fneg', a), b)), b), - (('fmul', a, 0.0), 0.0), - (('imul', a, 0), 0), - (('umul_unorm_4x8', a, 0), 0), - (('umul_unorm_4x8', a, ~0), a), - (('fmul', a, 1.0), a), - (('imul', a, 1), a), - (('fmul', a, -1.0), ('fneg', a)), - (('imul', a, -1), ('ineg', a)), - (('ffma', 0.0, a, b), b), - (('ffma', a, 0.0, b), b), - (('ffma', a, b, 0.0), ('fmul', a, b)), - (('ffma', a, 1.0, b), ('fadd', a, b)), - (('ffma', 1.0, a, b), ('fadd', a, b)), - (('flrp', a, b, 0.0), a), - (('flrp', a, b, 1.0), b), - (('flrp', a, a, b), a), - (('flrp', 0.0, a, b), ('fmul', a, b)), - (('flrp', a, b, c), ('fadd', ('fmul', c, ('fsub', b, a)), a), 'options->lower_flrp'), - (('ffract', a), ('fsub', a, ('ffloor', a)), 'options->lower_ffract'), - (('fadd', ('fmul', a, ('fadd', 1.0, ('fneg', c))), ('fmul', b, c)), ('flrp', a, b, c), '!options->lower_flrp'), - (('fadd', a, ('fmul', c, ('fadd', b, ('fneg', a)))), ('flrp', a, b, c), '!options->lower_flrp'), - (('ffma', a, b, c), ('fadd', ('fmul', a, b), c), 'options->lower_ffma'), - (('fadd', ('fmul', a, b), c), ('ffma', a, b, c), '!options->lower_ffma'), - # Comparison simplifications - (('inot', ('flt', a, b)), ('fge', a, b)), - (('inot', ('fge', a, b)), ('flt', a, b)), - (('inot', ('feq', a, b)), ('fne', a, b)), - (('inot', ('fne', a, b)), ('feq', a, b)), - (('inot', ('ilt', a, b)), ('ige', a, b)), - (('inot', ('ige', a, b)), ('ilt', a, b)), - (('inot', ('ieq', a, b)), ('ine', a, b)), - (('inot', ('ine', a, b)), ('ieq', a, b)), - (('fge', ('fneg', ('fabs', a)), 0.0), ('feq', a, 0.0)), - (('bcsel', ('flt', a, b), a, b), ('fmin', a, b)), - (('bcsel', ('flt', a, b), b, a), ('fmax', a, b)), - (('bcsel', ('inot', 'a@bool'), b, c), ('bcsel', a, c, b)), - (('bcsel', a, ('bcsel', a, b, c), d), ('bcsel', a, b, d)), - (('fmin', a, a), a), - (('fmax', a, a), a), - (('imin', a, a), a), - (('imax', a, a), a), - (('umin', a, a), a), - (('umax', a, a), a), - (('fmin', ('fmax', a, 0.0), 1.0), ('fsat', a), '!options->lower_fsat'), - (('fmax', ('fmin', a, 1.0), 0.0), ('fsat', a), '!options->lower_fsat'), - (('fsat', a), ('fmin', ('fmax', a, 0.0), 1.0), 'options->lower_fsat'), - (('fsat', ('fsat', a)), ('fsat', a)), - (('fmin', ('fmax', ('fmin', ('fmax', a, 0.0), 1.0), 0.0), 1.0), ('fmin', ('fmax', a, 0.0), 1.0)), - (('ior', ('flt', a, b), ('flt', a, c)), ('flt', a, ('fmax', b, c))), - (('ior', ('flt', a, c), ('flt', b, c)), ('flt', ('fmin', a, b), c)), - (('ior', ('fge', a, b), ('fge', a, c)), ('fge', a, ('fmin', b, c))), - (('ior', ('fge', a, c), ('fge', b, c)), ('fge', ('fmax', a, b), c)), - (('slt', a, b), ('b2f', ('flt', a, b)), 'options->lower_scmp'), - (('sge', a, b), ('b2f', ('fge', a, b)), 'options->lower_scmp'), - (('seq', a, b), ('b2f', ('feq', a, b)), 'options->lower_scmp'), - (('sne', a, b), ('b2f', ('fne', a, b)), 'options->lower_scmp'), - (('fne', ('fneg', a), a), ('fne', a, 0.0)), - (('feq', ('fneg', a), a), ('feq', a, 0.0)), - # Emulating booleans - (('imul', ('b2i', a), ('b2i', b)), ('b2i', ('iand', a, b))), - (('fmul', ('b2f', a), ('b2f', b)), ('b2f', ('iand', a, b))), - (('fsat', ('fadd', ('b2f', a), ('b2f', b))), ('b2f', ('ior', a, b))), - (('iand', 'a@bool', 1.0), ('b2f', a)), - (('flt', ('fneg', ('b2f', a)), 0), a), # Generated by TGSI KILL_IF. - (('flt', ('fsub', 0.0, ('b2f', a)), 0), a), # Generated by TGSI KILL_IF. - # Comparison with the same args. Note that these are not done for - # the float versions because NaN always returns false on float - # inequalities. - (('ilt', a, a), False), - (('ige', a, a), True), - (('ieq', a, a), True), - (('ine', a, a), False), - (('ult', a, a), False), - (('uge', a, a), True), - # Logical and bit operations - (('fand', a, 0.0), 0.0), - (('iand', a, a), a), - (('iand', a, ~0), a), - (('iand', a, 0), 0), - (('ior', a, a), a), - (('ior', a, 0), a), - (('fxor', a, a), 0.0), - (('ixor', a, a), 0), - (('inot', ('inot', a)), a), - # DeMorgan's Laws - (('iand', ('inot', a), ('inot', b)), ('inot', ('ior', a, b))), - (('ior', ('inot', a), ('inot', b)), ('inot', ('iand', a, b))), - # Shift optimizations - (('ishl', 0, a), 0), - (('ishl', a, 0), a), - (('ishr', 0, a), 0), - (('ishr', a, 0), a), - (('ushr', 0, a), 0), - (('ushr', a, 0), a), - # Exponential/logarithmic identities - (('fexp2', ('flog2', a)), a), # 2^lg2(a) = a - (('flog2', ('fexp2', a)), a), # lg2(2^a) = a - (('fpow', a, b), ('fexp2', ('fmul', ('flog2', a), b)), 'options->lower_fpow'), # a^b = 2^(lg2(a)*b) - (('fexp2', ('fmul', ('flog2', a), b)), ('fpow', a, b), '!options->lower_fpow'), # 2^(lg2(a)*b) = a^b - (('fpow', a, 1.0), a), - (('fpow', a, 2.0), ('fmul', a, a)), - (('fpow', a, 4.0), ('fmul', ('fmul', a, a), ('fmul', a, a))), - (('fpow', 2.0, a), ('fexp2', a)), - (('fpow', ('fpow', a, 2.2), 0.454545), a), - (('fpow', ('fabs', ('fpow', a, 2.2)), 0.454545), ('fabs', a)), - (('fsqrt', ('fexp2', a)), ('fexp2', ('fmul', 0.5, a))), - (('frcp', ('fexp2', a)), ('fexp2', ('fneg', a))), - (('frsq', ('fexp2', a)), ('fexp2', ('fmul', -0.5, a))), - (('flog2', ('fsqrt', a)), ('fmul', 0.5, ('flog2', a))), - (('flog2', ('frcp', a)), ('fneg', ('flog2', a))), - (('flog2', ('frsq', a)), ('fmul', -0.5, ('flog2', a))), - (('flog2', ('fpow', a, b)), ('fmul', b, ('flog2', a))), - (('fadd', ('flog2', a), ('flog2', b)), ('flog2', ('fmul', a, b))), - (('fadd', ('flog2', a), ('fneg', ('flog2', b))), ('flog2', ('fdiv', a, b))), - (('fmul', ('fexp2', a), ('fexp2', b)), ('fexp2', ('fadd', a, b))), - # Division and reciprocal - (('fdiv', 1.0, a), ('frcp', a)), - (('fdiv', a, b), ('fmul', a, ('frcp', b)), 'options->lower_fdiv'), - (('frcp', ('frcp', a)), a), - (('frcp', ('fsqrt', a)), ('frsq', a)), - (('fsqrt', a), ('frcp', ('frsq', a)), 'options->lower_fsqrt'), - (('frcp', ('frsq', a)), ('fsqrt', a), '!options->lower_fsqrt'), - # Boolean simplifications - (('ieq', 'a@bool', True), a), - (('ine', 'a@bool', True), ('inot', a)), - (('ine', 'a@bool', False), a), - (('ieq', 'a@bool', False), ('inot', 'a')), - (('bcsel', a, True, False), ('ine', a, 0)), - (('bcsel', a, False, True), ('ieq', a, 0)), - (('bcsel', True, b, c), b), - (('bcsel', False, b, c), c), - # The result of this should be hit by constant propagation and, in the - # next round of opt_algebraic, get picked up by one of the above two. - (('bcsel', '#a', b, c), ('bcsel', ('ine', 'a', 0), b, c)), - - (('bcsel', a, b, b), b), - (('fcsel', a, b, b), b), - - # Conversions - (('i2b', ('b2i', a)), a), - (('f2i', ('ftrunc', a)), ('f2i', a)), - (('f2u', ('ftrunc', a)), ('f2u', a)), - - # Subtracts - (('fsub', a, ('fsub', 0.0, b)), ('fadd', a, b)), - (('isub', a, ('isub', 0, b)), ('iadd', a, b)), - (('ussub_4x8', a, 0), a), - (('ussub_4x8', a, ~0), 0), - (('fsub', a, b), ('fadd', a, ('fneg', b)), 'options->lower_sub'), - (('isub', a, b), ('iadd', a, ('ineg', b)), 'options->lower_sub'), - (('fneg', a), ('fsub', 0.0, a), 'options->lower_negate'), - (('ineg', a), ('isub', 0, a), 'options->lower_negate'), - (('fadd', a, ('fsub', 0.0, b)), ('fsub', a, b)), - (('iadd', a, ('isub', 0, b)), ('isub', a, b)), - (('fabs', ('fsub', 0.0, a)), ('fabs', a)), - (('iabs', ('isub', 0, a)), ('iabs', a)), - - # Misc. lowering - (('fmod', a, b), ('fsub', a, ('fmul', b, ('ffloor', ('fdiv', a, b)))), 'options->lower_fmod'), - (('uadd_carry', a, b), ('b2i', ('ult', ('iadd', a, b), a)), 'options->lower_uadd_carry'), - (('usub_borrow', a, b), ('b2i', ('ult', a, b)), 'options->lower_usub_borrow'), - - (('bitfield_insert', 'base', 'insert', 'offset', 'bits'), - ('bcsel', ('ilt', 31, 'bits'), 'insert', - ('bfi', ('bfm', 'bits', 'offset'), 'insert', 'base')), - 'options->lower_bitfield_insert'), - - (('ibitfield_extract', 'value', 'offset', 'bits'), - ('bcsel', ('ilt', 31, 'bits'), 'value', - ('ibfe', 'value', 'offset', 'bits')), - 'options->lower_bitfield_extract'), - - (('ubitfield_extract', 'value', 'offset', 'bits'), - ('bcsel', ('ult', 31, 'bits'), 'value', - ('ubfe', 'value', 'offset', 'bits')), - 'options->lower_bitfield_extract'), -] - -# Add optimizations to handle the case where the result of a ternary is -# compared to a constant. This way we can take things like -# -# (a ? 0 : 1) > 0 -# -# and turn it into -# -# a ? (0 > 0) : (1 > 0) -# -# which constant folding will eat for lunch. The resulting ternary will -# further get cleaned up by the boolean reductions above and we will be -# left with just the original variable "a". -for op in ['flt', 'fge', 'feq', 'fne', - 'ilt', 'ige', 'ieq', 'ine', 'ult', 'uge']: - optimizations += [ - ((op, ('bcsel', 'a', '#b', '#c'), '#d'), - ('bcsel', 'a', (op, 'b', 'd'), (op, 'c', 'd'))), - ((op, '#d', ('bcsel', a, '#b', '#c')), - ('bcsel', 'a', (op, 'd', 'b'), (op, 'd', 'c'))), - ] - -# This section contains "late" optimizations that should be run after the -# regular optimizations have finished. Optimizations should go here if -# they help code generation but do not necessarily produce code that is -# more easily optimizable. -late_optimizations = [ - (('flt', ('fadd', a, b), 0.0), ('flt', a, ('fneg', b))), - (('fge', ('fadd', a, b), 0.0), ('fge', a, ('fneg', b))), - (('feq', ('fadd', a, b), 0.0), ('feq', a, ('fneg', b))), - (('fne', ('fadd', a, b), 0.0), ('fne', a, ('fneg', b))), - (('fdot2', a, b), ('fdot_replicated2', a, b), 'options->fdot_replicates'), - (('fdot3', a, b), ('fdot_replicated3', a, b), 'options->fdot_replicates'), - (('fdot4', a, b), ('fdot_replicated4', a, b), 'options->fdot_replicates'), - (('fdph', a, b), ('fdph_replicated', a, b), 'options->fdot_replicates'), -] - -print nir_algebraic.AlgebraicPass("nir_opt_algebraic", optimizations).render() -print nir_algebraic.AlgebraicPass("nir_opt_algebraic_late", - late_optimizations).render() |