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compiler/nir: add lowering for 16-bit flrp

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And enable it on Intel.

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

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Iago Toral Quiroga
2018-04-18 11:02:51 +02:00
committed by Juan A. Suarez Romero
parent ca31df6f1f
commit 3766334923
3 changed files with 3 additions and 0 deletions
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1
src/compiler/nir/nir.h
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@@ -2163,6 +2163,7 @@ typedef struct nir_shader_compiler_options {
bool lower_fdiv;
bool lower_ffma;
bool fuse_ffma;
bool lower_flrp16;
bool lower_flrp32;
/** Lowers flrp when it does not support doubles */
bool lower_flrp64;

1
src/compiler/nir/nir_opt_algebraic.py
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@@ -128,6 +128,7 @@ optimizations = [
(('~flrp', 0.0, a, b), ('fmul', a, b)),
(('~flrp', a, b, ('b2f', 'c@1')), ('bcsel', c, b, a), 'options->lower_flrp32'),
(('~flrp', a, 0.0, c), ('fadd', ('fmul', ('fneg', a), c), a)),
(('flrp@16', a, b, c), ('fadd', ('fmul', c, ('fsub', b, a)), a), 'options->lower_flrp16'),
(('flrp@32', a, b, c), ('fadd', ('fmul', c, ('fsub', b, a)), a), 'options->lower_flrp32'),
(('flrp@64', a, b, c), ('fadd', ('fmul', c, ('fsub', b, a)), a), 'options->lower_flrp64'),
(('ffloor', a), ('fsub', a, ('ffract', a)), 'options->lower_ffloor'),

1
src/intel/compiler/brw_compiler.c
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@@ -33,6 +33,7 @@
.lower_sub = true, \
.lower_fdiv = true, \
.lower_scmp = true, \
.lower_flrp16 = true, \
.lower_fmod16 = true, \
.lower_fmod32 = true, \
.lower_fmod64 = false, \