vc4 cse/algebraic-disabled stats:
total uniforms in shared programs: 13972 -> 13966 (-0.04%)
uniforms in affected programs: 408 -> 402 (-1.47%)
total instructions in shared programs: 44973 -> 44911 (-0.14%)
instructions in affected programs: 1551 -> 1489 (-4.00%)
---
src/gallium/drivers/vc4/vc4_program.c | 1 +
src/glsl/nir/nir.h | 1 +
src/glsl/nir/nir_opt_algebraic.py | 3 ++-
3 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/src/gallium/drivers/vc4/vc4_program.c
b/src/gallium/drivers/vc4/vc4_program.c
index 806ac6f..fd818b4 100644
--- a/src/gallium/drivers/vc4/vc4_program.c
+++ b/src/gallium/drivers/vc4/vc4_program.c
@@ -2099,6 +2099,7 @@ nir_to_qir(struct vc4_compile *c)
static const nir_shader_compiler_options nir_options = {
.lower_fpow = true,
+ .lower_fsqrt = true,
};
static struct vc4_compile *
diff --git a/src/glsl/nir/nir.h b/src/glsl/nir/nir.h
index a2163ed..b0ad4b0 100644
--- a/src/glsl/nir/nir.h
+++ b/src/glsl/nir/nir.h
@@ -1328,6 +1328,7 @@ typedef struct nir_function {
typedef struct nir_shader_compiler_options {
bool lower_fpow;
+ bool lower_fsqrt;
} nir_shader_compiler_options;
typedef struct nir_shader {
diff --git a/src/glsl/nir/nir_opt_algebraic.py
b/src/glsl/nir/nir_opt_algebraic.py
index 41bfe04..2020997 100644
--- a/src/glsl/nir/nir_opt_algebraic.py
+++ b/src/glsl/nir/nir_opt_algebraic.py
@@ -117,7 +117,8 @@ optimizations = [
(('fdiv', 1.0, a), ('frcp', a)),
(('frcp', ('frcp', a)), a),
(('frcp', ('fsqrt', a)), ('frsq', a)),
- (('frcp', ('frsq', a)), ('fsqrt', a)),
+ (('fsqrt', a), ('frcp', ('frsq', a)), 'options->lower_fsqrt'),
+ (('frcp', ('frsq', a)), ('fsqrt', a), '!options->lower_fsqrt'),
# Boolean simplifications
(('ine', 'a@bool', 0), 'a'),
(('ieq', 'a@bool', 0), ('inot', 'a')),
--
2.1.4
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