---
I missed this one when I was doing my other lowering bits. I don't
have ffma, and I certainly don't have flrp.
src/gallium/drivers/vc4/vc4_program.c | 1 +
src/glsl/nir/nir.h | 1 +
src/glsl/nir/nir_opt_algebraic.py | 1 +
3 files changed, 3 insertions(+)
diff --git a/src/gallium/drivers/vc4/vc4_program.c
b/src/gallium/drivers/vc4/vc4_program.c
index 26816ca..e768b1a 100644
--- a/src/gallium/drivers/vc4/vc4_program.c
+++ b/src/gallium/drivers/vc4/vc4_program.c
@@ -2005,6 +2005,7 @@ nir_to_qir(struct vc4_compile *c)
static const nir_shader_compiler_options nir_options = {
.lower_ffma = true,
+ .lower_flrp = true,
.lower_fpow = true,
.lower_fsat = true,
.lower_fsqrt = true,
diff --git a/src/glsl/nir/nir.h b/src/glsl/nir/nir.h
index 29fe942..7b886e3 100644
--- a/src/glsl/nir/nir.h
+++ b/src/glsl/nir/nir.h
@@ -1365,6 +1365,7 @@ typedef struct nir_function {
typedef struct nir_shader_compiler_options {
bool lower_ffma;
+ bool lower_flrp;
bool lower_fpow;
bool lower_fsat;
bool lower_fsqrt;
diff --git a/src/glsl/nir/nir_opt_algebraic.py
b/src/glsl/nir/nir_opt_algebraic.py
index 1ee51a0..20ec4d3 100644
--- a/src/glsl/nir/nir_opt_algebraic.py
+++ b/src/glsl/nir/nir_opt_algebraic.py
@@ -75,6 +75,7 @@ optimizations = [
(('flrp', a, b, 1.0), b),
(('flrp', a, a, b), a),
(('flrp', 0.0, a, b), ('fmul', a, b)),
+ (('flrp', a, b, c), ('fadd', ('fmul', c, ('fsub', b, a)), a),
'options->lower_flrp'),
(('ffma', a, b, c), ('fadd', ('fmul', a, b), c), 'options->lower_ffma'),
(('fadd', ('fmul', a, b), c), ('ffma', a, b, c), '!options->lower_ffma'),
# Comparison simplifications
--
2.1.4
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