Enable the lower_vec_and_coalesce pass on non-scalar shaders, after
the shader is out of SSA-form and before passing lower_vec_to_movs.
shader-db VS results against non-NIR before this patch:
total instructions in shared programs: 1853747 -> 1804428 (-2.66%)
instructions in affected programs: 1687580 -> 1638261 (-2.92%)
helped: 6748
HURT: 11101
GAINED: 0
LOST: 0
shader-db VS results against non-NIR after this patch:
total instructions in shared programs: 1853747 -> 1762126 (-4.94%)
instructions in affected programs: 1681255 -> 1589634 (-5.45%)
helped: 7751
HURT: 9344
GAINED: 0
LOST: 0
---
src/mesa/drivers/dri/i965/brw_nir.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/brw_nir.c
b/src/mesa/drivers/dri/i965/brw_nir.c
index 8f3edc5..0797fda 100644
--- a/src/mesa/drivers/dri/i965/brw_nir.c
+++ b/src/mesa/drivers/dri/i965/brw_nir.c
@@ -187,6 +187,9 @@ brw_create_nir(struct brw_context *brw,
nir_validate_shader(nir);
if (!is_scalar) {
+ nir_lower_vec_and_coalesce(nir);
+ nir_validate_shader(nir);
+
nir_lower_vec_to_movs(nir);
nir_validate_shader(nir);
}
--
2.4.6
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