[Mesa-dev] [PATCH 3/3] nir/opt_algebraic: lower mod() with doubles operands if lower_fmod64 is enabled

[Samuel Iglesias Gonsálvez]

Make this distintion as the drivers might need to lower it inside NIR.

Signed-off-by: Samuel Iglesias Gonsálvez <siglesias at igalia.com>
---
 src/compiler/nir/nir.h                | 2 ++
 src/compiler/nir/nir_opt_algebraic.py | 3 ++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
index a478124..83a8cae 100644
--- a/src/compiler/nir/nir.h
+++ b/src/compiler/nir/nir.h
@@ -1631,6 +1631,8 @@ typedef struct nir_shader_compiler_options {
    bool lower_fsat;
    bool lower_fsqrt;
    bool lower_fmod32;
+   /** Lowers fmod when it does not support doubles */
+   bool lower_fmod64;
    bool lower_bitfield_extract;
    bool lower_bitfield_insert;
    bool lower_uadd_carry;
diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py
index afe653e..f81416b 100644
--- a/src/compiler/nir/nir_opt_algebraic.py
+++ b/src/compiler/nir/nir_opt_algebraic.py
@@ -296,7 +296,8 @@ optimizations = [
    (('iadd', '#a', ('iadd', b, '#c')), ('iadd', ('iadd', a, c), b)),
 
    # Misc. lowering
-   (('fmod', a, b), ('fsub', a, ('fmul', b, ('ffloor', ('fdiv', a, b)))), 'options->lower_fmod32'),
+   (('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'),
    (('uadd_carry at 32', a, b), ('b2i', ('ult', ('iadd', a, b), a)), 'options->lower_uadd_carry'),
    (('usub_borrow at 32', a, b), ('b2i', ('ult', a, b)), 'options->lower_usub_borrow'),
-- 
2.5.0