[stubs] Introduce AddStub and SubtractStub.

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 3335bda7de4fb03d3426cb2bc4392d07741cecdf..b380aedc15309ef0fc5f443bf2f837612668a143 100644
--- a/src/compiler/code-stub-assembler.h
+++ b/src/compiler/code-stub-assembler.h
@@ -63,8 +63,12 @@ class Schedule;
 
 #define CODE_STUB_ASSEMBLER_BINARY_OP_LIST(V)   \
   CODE_STUB_ASSEMBLER_COMPARE_BINARY_OP_LIST(V) \
+  V(Float64Add)                                 \
+  V(Float64Sub)                                 \
   V(IntPtrAdd)                                  \
+  V(IntPtrAddWithOverflow)                      \
   V(IntPtrSub)                                  \
+  V(IntPtrSubWithOverflow)                      \
   V(Int32Add)                                   \
   V(Int32Sub)                                   \
   V(Int32Mul)                                   \
@@ -263,6 +267,9 @@ class CodeStubAssembler {
 
   // Smi operations.
   Node* SmiAdd(Node* a, Node* b);
+  Node* SmiAddWithOverflow(Node* a, Node* b);
+  Node* SmiSub(Node* a, Node* b);
+  Node* SmiSubWithOverflow(Node* a, Node* b);
   Node* SmiEqual(Node* a, Node* b);
   Node* SmiLessThan(Node* a, Node* b);
   Node* SmiLessThanOrEqual(Node* a, Node* b);