Version 5.1.294.2 (cherry-pick)

src/compiler/code-stub-assembler.h

Index: src/compiler/code-stub-assembler.h
diff --git a/src/compiler/code-stub-assembler.h b/src/compiler/code-stub-assembler.h
index 1137320a6b9b68eaf4520115aa238c1718bd52f3..7ad6fdfdbdf0218e9e0379e1ecafd509a30742d0 100644
--- a/src/compiler/code-stub-assembler.h
+++ b/src/compiler/code-stub-assembler.h
@@ -308,6 +308,10 @@ class CodeStubAssembler {
   // Load a field from an object on the heap.
   Node* LoadObjectField(Node* object, int offset,
                         MachineType rep = MachineType::AnyTagged());
+  // Store a field to an object on the heap.
+  Node* StoreObjectFieldNoWriteBarrier(
+      Node* object, int offset, Node* value,
+      MachineRepresentation rep = MachineRepresentation::kTagged);
   // Load the floating point value of a HeapNumber.
   Node* LoadHeapNumberValue(Node* object);
   // Store the floating point value of a HeapNumber.
@@ -327,6 +331,8 @@ class CodeStubAssembler {
 
   // Load the hash field of a name.
   Node* LoadNameHash(Node* name);
+  // Load the instance size of a Map.
+  Node* LoadMapInstanceSize(Node* map);
 
   // Load an array element from a FixedArray.
   Node* LoadFixedArrayElementInt32Index(Node* object, Node* int32_index,
@@ -341,6 +347,7 @@ class CodeStubAssembler {
   Node* AllocateHeapNumber();
   // Allocate a HeapNumber with a specific value.
   Node* AllocateHeapNumberWithValue(Node* value);
+  Node* InnerAllocate(Node* previous, int offset);
 
   // Store an array element to a FixedArray.
   Node* StoreFixedArrayElementNoWriteBarrier(Node* object, Node* index,