Merge pull request #10475 from gmcather/develop

add prependAllocatedop

Author: reyoung

paddle/fluid/framework/block_desc.cc

@@ -134,6 +134,11 @@ OpDesc *BlockDesc::PrependOp() {
   return ops_.front().get();
 }
 
+void BlockDesc::PrependAllocatedOp(std::unique_ptr<OpDesc> &&op_desc) {
+  need_update_ = true;
+  ops_.emplace_front(std::move(op_desc));
+}
+
 OpDesc *BlockDesc::InsertOp(size_t index) {
   need_update_ = true;
   auto it = ops_.begin() + index;

paddle/fluid/framework/block_desc.h

@@ -88,6 +88,8 @@ class BlockDesc {
 
   OpDesc *PrependOp();
 
+  void PrependAllocatedOp(std::unique_ptr<OpDesc> &&op_desc);
+
   OpDesc *InsertOp(size_t index);
 
   /*