From ab1310e84d7644e3c66c1160c2f3ede0744ce79d Mon Sep 17 00:00:00 2001
From: Konstantin Seurer <konstantin.seurer@gmail.com>
Date: Wed, 20 Sep 2023 16:32:07 +0200
Subject: [PATCH] nir: Add nir_foreach_block_in_cf_node_reverse

Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23712>
---
 src/.clang-format      | 1 +
 src/compiler/nir/nir.h | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/src/.clang-format b/src/.clang-format
index 5f6a4c11cef..0f0916c369e 100644
--- a/src/.clang-format
+++ b/src/.clang-format
@@ -154,6 +154,7 @@ ForEachMacros:
 
   - nir_foreach_block
   - nir_foreach_block_in_cf_node
+  - nir_foreach_block_in_cf_node_reverse
   - nir_foreach_block_reverse
   - nir_foreach_block_reverse_safe
   - nir_foreach_block_safe
diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
index a3c8127d0da..3a7953e8624 100644
--- a/src/compiler/nir/nir.h
+++ b/src/compiler/nir/nir.h
@@ -4582,6 +4582,11 @@ nir_block *nir_cf_node_cf_tree_prev(nir_cf_node *node);
         block != nir_cf_node_cf_tree_next(node);            \
         block = nir_block_cf_tree_next(block))
 
+#define nir_foreach_block_in_cf_node_reverse(block, node)  \
+   for (nir_block *block = nir_cf_node_cf_tree_last(node); \
+        block != nir_cf_node_cf_tree_prev(node);           \
+        block = nir_block_cf_tree_prev(block))
+
 /* If the following CF node is an if, this function returns that if.
  * Otherwise, it returns NULL.
  */