pan/bi: Add high-latency property for classes
This is required to know how to schedule legally, and also influences
some issues relating to RA.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4061>
diff --git a/src/panfrost/bifrost/compiler.h b/src/panfrost/bifrost/compiler.h
index 4d9ab07..7ffe9e5 100644
--- a/src/panfrost/bifrost/compiler.h
+++ b/src/panfrost/bifrost/compiler.h
@@ -105,6 +105,10 @@
/* Swizzling allowed for the 8/16-bit source */
#define BI_SWIZZLABLE (1 << 6)
+/* For scheduling purposes this is a high latency instruction and must be at
+ * the end of a clause. Implies ADD */
+#define BI_SCHED_HI_LATENCY ((1 << 7) | BI_SCHED_ADD)
+
/* It can't get any worse than csel4... can it? */
#define BIR_SRC_COUNT 4