[stubs] Introduce code stubs for bitwise binary operations.

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 43014196b736efdc11efb1d45a1b5dfd53b98830..288f53a18def9af7ac3579ec725ab1b64976d995 100644
--- a/src/compiler/code-stub-assembler.h
+++ b/src/compiler/code-stub-assembler.h
@@ -70,6 +70,7 @@ class Schedule;
   V(IntPtrSub)                                  \
   V(IntPtrSubWithOverflow)                      \
   V(Int32Add)                                   \
+  V(Int32AddWithOverflow)                       \
   V(Int32Sub)                                   \
   V(Int32Mul)                                   \
   V(WordOr)                                     \
@@ -294,6 +295,8 @@ class CodeStubAssembler {
   Node* LoadHeapNumberValue(Node* object);
   // Store the floating point value of a HeapNumber.
   Node* StoreHeapNumberValue(Node* object, Node* value);
+  // Truncate the floating point value of a HeapNumber to an Int32.
+  Node* TruncateHeapNumberValueToInt32(Node* object);
   // Load the bit field of a Map.
   Node* LoadMapBitField(Node* map);
   // Load the instance type of a Map.
@@ -329,6 +332,9 @@ class CodeStubAssembler {
 
   Node* BitFieldDecode(Node* word32, uint32_t shift, uint32_t mask);
 
+  // Conversions.
+  Node* ChangeInt32ToTagged(Node* value);
+
   // Branching helpers.
   // TODO(danno): Can we be more cleverish wrt. edge-split?
   void BranchIf(Node* condition, Label* if_true, Label* if_false);