[Mesa-dev] [PATCH 18/59] compiler/nir: add lowering option for 16-bit fmod

[Iago Toral Quiroga]

Reviewed-by: Jason Ekstrand <jason at jlekstrand.net>
---
 src/compiler/nir/nir.h                | 1 +
 src/compiler/nir/nir_opt_algebraic.py | 1 +
 2 files changed, 2 insertions(+)

diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
index db935c8496b..25ed64aa73c 100644
--- a/src/compiler/nir/nir.h
+++ b/src/compiler/nir/nir.h
@@ -2080,6 +2080,7 @@ 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. */
diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py
index f2a7be0c403..4977a383c3b 100644
--- a/src/compiler/nir/nir_opt_algebraic.py
+++ b/src/compiler/nir/nir_opt_algebraic.py
@@ -621,6 +621,7 @@ optimizations = [
    (('bcsel', ('ine', a, -1), ('ifind_msb', a), -1), ('ifind_msb', a)),
 
    # Misc. lowering
+   (('fmod at 16', a, b), ('fsub', a, ('fmul', b, ('ffloor', ('fdiv', a, b)))), 'options->lower_fmod16'),
    (('fmod at 32', a, b), ('fsub', a, ('fmul', b, ('ffloor', ('fdiv', a, b)))), 'options->lower_fmod32'),
    (('fmod at 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'),
-- 
2.17.1