diff options
| author | Jonathan Marek <jonathan@marek.ca> | 2018-11-12 12:49:32 -0500 |
|---|---|---|
| committer | Rob Clark <robdclark@gmail.com> | 2018-11-27 15:44:02 -0500 |
| commit | 3e7186d4722d009200781c9fb3b6141b064aeabb (patch) | |
| tree | 20565501336ca64eb28046f2f32b5817307d4cd2 | |
| parent | 11593f904168180510fe73c98d13ff7f00be4ec3 (diff) | |
nir: add fceil lowering
lowers ceil(x) as -floor(-x)
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: Rob Clark <robdclark@gmail.com>
| -rw-r--r-- | src/compiler/nir/nir.h | 3 | ||||
| -rw-r--r-- | src/compiler/nir/nir_opt_algebraic.py | 1 |
2 files changed, 4 insertions, 0 deletions
diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h index a292ec73e1e..db935c8496b 100644 --- a/src/compiler/nir/nir.h +++ b/src/compiler/nir/nir.h @@ -2130,6 +2130,9 @@ typedef struct nir_shader_compiler_options { /** lowers ffract to fsub+ffloor: */ bool lower_ffract; + /** lowers fceil to fneg+ffloor+fneg: */ + bool lower_fceil; + bool lower_ldexp; bool lower_pack_half_2x16; diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py index 0d8802582aa..f2a7be0c403 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -125,6 +125,7 @@ optimizations = [ (('flrp@64', a, b, c), ('fadd', ('fmul', c, ('fsub', b, a)), a), 'options->lower_flrp64'), (('ffloor', a), ('fsub', a, ('ffract', a)), 'options->lower_ffloor'), (('ffract', a), ('fsub', a, ('ffloor', a)), 'options->lower_ffract'), + (('fceil', a), ('fneg', ('ffloor', ('fneg', a))), 'options->lower_fceil'), (('~fadd', ('fmul', a, ('fadd', 1.0, ('fneg', ('b2f', c)))), ('fmul', b, ('b2f', c))), ('bcsel', c, b, a), 'options->lower_flrp32'), (('~fadd@32', ('fmul', a, ('fadd', 1.0, ('fneg', c ))), ('fmul', b, c )), ('flrp', a, b, c), '!options->lower_flrp32'), (('~fadd@64', ('fmul', a, ('fadd', 1.0, ('fneg', c ))), ('fmul', b, c )), ('flrp', a, b, c), '!options->lower_flrp64'), |