pan/bi: Add branch constant field to IR
The offsets used for branches need some extra bits twiddled, so add a
field to the clause to indicate this is happening. This is not ambiguous
since a clause can only have a single branch.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5260>
diff --git a/src/panfrost/bifrost/compiler.h b/src/panfrost/bifrost/compiler.h
index b1f7887..fb95c6d 100644
--- a/src/panfrost/bifrost/compiler.h
+++ b/src/panfrost/bifrost/compiler.h
@@ -376,6 +376,12 @@
uint64_t constants[8];
unsigned constant_count;
+ /* Branches encode a constant offset relative to the program counter
+ * with some magic flags. By convention, if there is a branch, its
+ * constant will be last. Set this flag to indicate this is required.
+ */
+ bool branch_constant;
+
/* What type of high latency instruction is here, basically */
unsigned clause_type;
} bi_clause;