From: Matt Turner <mattst88@gmail.com>
Date: Tue, 30 Sep 2014 22:06:23 +0000 (-0700)
Subject: i965/fs: Emit compressed BFI2 instructions on Gen > 7.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3e7f8005db3e8f5f493ab83c1438bb6cf8c840b5;p=mesa.git

i965/fs: Emit compressed BFI2 instructions on Gen > 7.

IVB had a restriction that prevented us from emitting compressed
three-source instructions, and although that was lifted on Haswell,
Haswell had a new restriction that said BFI instructions specifically
couldn't be compressed.
---

diff --git a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
index 145e0ea44f8..e20d3ccb8a4 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
@@ -1729,7 +1729,7 @@ fs_generator::generate_code(const cfg_t *cfg)
           * Otherwise we would be able to emit compressed instructions like we
           * do for the other three-source instructions.
           */
-         if (dispatch_width == 16) {
+         if (dispatch_width == 16 && brw->gen < 8) {
             brw_set_default_compression_control(p, BRW_COMPRESSION_NONE);
             brw_BFI2(p, firsthalf(dst), firsthalf(src[0]), firsthalf(src[1]), firsthalf(src[2]));
             brw_set_default_compression_control(p, BRW_COMPRESSION_2NDHALF);