The visitor emits MOVs to temporary registers for immediates, so these
never trigger. For further proof, check case ir_triop_fma.
---
src/mesa/drivers/dri/i965/brw_fs_visitor.cpp | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
index d4f08aa..ce4d8c8 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
@@ -226,10 +226,7 @@ void
fs_visitor::emit_lrp(const fs_reg &dst, const fs_reg &x, const fs_reg &y,
const fs_reg &a)
{
- if (brw->gen < 6 ||
- !x.is_valid_3src() ||
- !y.is_valid_3src() ||
- !a.is_valid_3src()) {
+ if (brw->gen < 6) {
/* We can't use the LRP instruction. Emit x*(1-a) + y*a. */
fs_reg y_times_a = fs_reg(this, glsl_type::float_type);
fs_reg one_minus_a = fs_reg(this, glsl_type::float_type);
--
2.0.4
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