SEND can't deal with swizzles, source modifiers, and so on. This should
avoid problems with VS pull constant loads on Broadwell.
Signed-off-by: Kenneth Graunke <kenn...@whitecape.org>
---
src/mesa/drivers/dri/i965/brw_vec4_copy_propagation.cpp | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_copy_propagation.cpp
b/src/mesa/drivers/dri/i965/brw_vec4_copy_propagation.cpp
index d009a08..8948223 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_copy_propagation.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_copy_propagation.cpp
@@ -238,6 +238,9 @@ vec4_visitor::try_copy_propagation(vec4_instruction *inst,
int arg,
if (is_3src_inst && value.file == UNIFORM)
return false;
+ if (inst->is_send_from_grf())
+ return false;
+
/* We can't copy-propagate a UD negation into a condmod
* instruction, because the condmod ends up looking at the 33-bit
* signed accumulator value instead of the 32-bit value we wanted
--
1.8.3.2
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