From: Kenneth Graunke Date: Sun, 16 Dec 2012 08:40:30 +0000 (-0800) Subject: i965/vs: Don't copy propagate into SEND-from-GRF messages. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=dd159f25e484d2285773347b66f82719b6bfa01a;p=mesa.git i965/vs: Don't copy propagate into SEND-from-GRF messages. 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 Reviewed-by: Eric Anholt --- 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 033c6421f1f..06f0e999ecf 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