Mesa (master): i965: Add 3-src destination and shared-source type macros.

[Matt Turner]

Module: Mesa
Branch: master
Commit: 23050478235fc66e4f8decebd94039b4efcc6c10
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=23050478235fc66e4f8decebd94039b4efcc6c10

Author: Matt Turner <mattst88 at gmail.com>
Date:   Wed Apr 17 11:52:00 2013 -0700

i965: Add 3-src destination and shared-source type macros.

Reviewed-by: Chris Forbes <chrisf at ijw.co.nz>

---

 src/mesa/drivers/dri/i965/brw_defines.h |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_defines.h b/src/mesa/drivers/dri/i965/brw_defines.h
index 6517f24..b007520 100644
--- a/src/mesa/drivers/dri/i965/brw_defines.h
+++ b/src/mesa/drivers/dri/i965/brw_defines.h
@@ -777,6 +777,17 @@ enum opcode {
 #define BRW_REGISTER_TYPE_V   6	/* packed int vector, immediates only, uword dest only */
 #define BRW_REGISTER_TYPE_F   7
 
+/* SNB adds 3-src instructions (MAD and LRP) that only operate on floats, so
+ * the types were implied. IVB adds BFE and BFI2 that operate on doublewords
+ * and unsigned doublewords, so a new field is also available in the da3src
+ * struct (part of struct brw_instruction.bits1 in brw_structs.h) to select
+ * dst and shared-src types. The values are different from BRW_REGISTER_TYPE_*.
+ */
+#define BRW_3SRC_TYPE_F  0
+#define BRW_3SRC_TYPE_D  1
+#define BRW_3SRC_TYPE_UD 2
+#define BRW_3SRC_TYPE_DF 3
+
 #define BRW_ARF_NULL                  0x00
 #define BRW_ARF_ADDRESS               0x10
 #define BRW_ARF_ACCUMULATOR           0x20