1 files changed, 9 insertions, 1 deletions
diff --git a/mlir/lib/IR/Block.cpp b/mlir/lib/IR/Block.cpp
index ea92422cd0e..63e85802b73 100644
--- a/mlir/lib/IR/Block.cpp
+++ b/mlir/lib/IR/Block.cpp
@@ -57,7 +57,15 @@ bool Block::isEntryBlock() { return this == &getParent()->front(); }
 void Block::insertBefore(Block *block) {
   assert(!getParent() && "already inserted into a block!");
   assert(block->getParent() && "cannot insert before a block without a parent");
-  block->getParent()->getBlocks().insert(Region::iterator(block), this);
+  block->getParent()->getBlocks().insert(block->getIterator(), this);
+}
+
+/// Unlink this block from its current region and insert it right before the
+/// specific block.
+void Block::moveBefore(Block *block) {
+  assert(block->getParent() && "cannot insert before a block without a parent");
+  block->getParent()->getBlocks().splice(
+      block->getIterator(), getParent()->getBlocks(), getIterator());
 }
 
 /// Unlink this Block from its parent Region and delete it.