From dbce99a809dfd9f050ba28b8341562e418675695 Mon Sep 17 00:00:00 2001
From: Boris Brezillon <boris.brezillon@collabora.com>
Date: Mon, 25 Jan 2021 12:02:21 +0100
Subject: [PATCH] pan/bi: Add an is_terminal_block() helper

Needed to decide what to do with JUMPs/BRANCHes to such blocks.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8848>
---
 src/panfrost/bifrost/compiler.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/panfrost/bifrost/compiler.h b/src/panfrost/bifrost/compiler.h
index 33dac9ce761..8b21728e31e 100644
--- a/src/panfrost/bifrost/compiler.h
+++ b/src/panfrost/bifrost/compiler.h
@@ -746,6 +746,15 @@ bool bi_can_insert_tuple(bi_clause *clause, bool constant);
 unsigned bi_clause_quadwords(bi_clause *clause);
 signed bi_block_offset(bi_context *ctx, bi_clause *start, bi_block *target);
 
+static inline bool
+bi_is_terminal_block(bi_context *ctx, bi_block *block)
+{
+
+        return block->base.successors[0] == NULL &&
+               block->base.successors[1] == NULL &&
+               list_is_empty(&block->clauses);
+}
+
 /* Code emit */
 
 void bi_pack(bi_context *ctx, struct util_dynarray *emission);