pan/bi: Add node_to_index helper

To invert index_to_node for RA. Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8215>
2020-12-16 12:56:45 -05:00
parent b85f317017
commit 06f52fe0b1
1 changed files with 9 additions and 0 deletions
@@ -778,6 +778,15 @@ bi_get_node(bi_index index)
                return (index.value << 1) | index.reg;
 }

+static inline bi_index
+bi_node_to_index(unsigned node, unsigned node_count)
+{
+        assert(node < node_count);
+        assert(node_count < ~0);
+
+        return bi_get_index(node >> 1, node & PAN_IS_REG, 0);
+}
+
 /* Iterators for Bifrost IR */

 #define bi_foreach_block(ctx, v) \