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compiler/nir: add lowering option for 16-bit fmod

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And enable it on Intel.

v2:
 - Squash the change to enable this lowering on Intel (Jason)

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Iago Toral Quiroga 2018-04-18 10:50:35 +02:00 • committed by Juan A. Suarez Romero
parent 08d97aadd1
commit ca31df6f1f
3 changed files with 3 additions and 0 deletions
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1
src/compiler/nir/nir.h
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@ -2169,6 +2169,7 @@ typedef struct nir_shader_compiler_options {
bool lower_fpow;
bool lower_fsat;
bool lower_fsqrt;
bool lower_fmod16;
bool lower_fmod32;
bool lower_fmod64;
/** Lowers ibitfield_extract/ubitfield_extract to ibfe/ubfe. */

1
src/compiler/nir/nir_opt_algebraic.py
View file

@ -674,6 +674,7 @@ optimizations = [
(('bcsel', ('ine', a, -1), ('ifind_msb', a), -1), ('ifind_msb', a)),
# Misc. lowering
(('fmod@16', a, b), ('fsub', a, ('fmul', b, ('ffloor', ('fdiv', a, b)))), 'options->lower_fmod16'),
(('fmod@32', a, b), ('fsub', a, ('fmul', b, ('ffloor', ('fdiv', a, b)))), 'options->lower_fmod32'),
(('fmod@64', a, b), ('fsub', a, ('fmul', b, ('ffloor', ('fdiv', a, b)))), 'options->lower_fmod64'),
(('frem', a, b), ('fsub', a, ('fmul', b, ('ftrunc', ('fdiv', a, b)))), 'options->lower_fmod32'),

1
src/intel/compiler/brw_compiler.c
View file

@ -33,6 +33,7 @@
.lower_sub = true, \
.lower_fdiv = true, \
.lower_scmp = true, \
.lower_fmod16 = true, \
.lower_fmod32 = true, \
.lower_fmod64 = false, \
.lower_bitfield_extract = true, \