[interpreter] Introduce binary op bytecodes for Smi operand.

src/code-stubs.cc

Index: src/code-stubs.cc
diff --git a/src/code-stubs.cc b/src/code-stubs.cc
index c60cc344166060cbc745f70b4cfbd07b4c403306..75278449ab0c0dfe34b5506d9ce899c060294959 100644
--- a/src/code-stubs.cc
+++ b/src/code-stubs.cc
@@ -1698,7 +1698,7 @@ compiler::Node* IncStub::Generate(CodeStubAssembler* assembler,
       Node* pair = assembler->SmiAddWithOverflow(value, one);
       Node* overflow = assembler->Projection(1, pair);
 
-      // Check if the Smi additon overflowed.
+      // Check if the Smi addition overflowed.
       Label if_overflow(assembler), if_notoverflow(assembler);
       assembler->Branch(overflow, &if_overflow, &if_notoverflow);