[Interpreter] Add more bytecode definitions and add operand types.

src/interpreter/interpreter.cc

Index: src/interpreter/interpreter.cc
diff --git a/src/interpreter/interpreter.cc b/src/interpreter/interpreter.cc
index 0542086d2cf95b977a9e4279c5a5abffe1e66381..ddb87056edcb2eabccbd37e21a0d53ebaee6c05c 100644
--- a/src/interpreter/interpreter.cc
+++ b/src/interpreter/interpreter.cc
@@ -34,29 +34,40 @@ void Interpreter::Initialize(bool create_heap_objects) {
         handler_table->address()));
     isolate_->heap()->public_set_interpreter_table(*handler_table);
 
-#define GENERATE_CODE(Name, _)                                         \
-    {                                                                  \
-      compiler::InterpreterAssembler assembler(isolate_, &zone,        \
-                                               Bytecode::k##Name);     \
-      Do##Name(&assembler);                                            \
-      Handle<Code> code = assembler.GenerateCode();                    \
-      handler_table->set(static_cast<int>(Bytecode::k##Name), *code);  \
-    }
+#define GENERATE_CODE(Name, ...)                                    \
+  {                                                                 \
+    compiler::InterpreterAssembler assembler(isolate_, &zone,       \
+                                             Bytecode::k##Name);    \
+    Do##Name(&assembler);                                           \
+    Handle<Code> code = assembler.GenerateCode();                   \
+    handler_table->set(static_cast<int>(Bytecode::k##Name), *code); \
+  }
     BYTECODE_LIST(GENERATE_CODE)
 #undef GENERATE_CODE
   }
 }
 
 
-// Load literal '0' into the register index specified by the bytecode's
-// argument.
+// LoadLiteral0 <dst>
+//
+// Load literal '0' into the destination register.
 void Interpreter::DoLoadLiteral0(compiler::InterpreterAssembler* assembler) {
-  Node* register_index = __ BytecodeArg(0);
+  Node* register_index = __ BytecodeOperand(0);
   __ StoreRegister(__ NumberConstant(0), register_index);
   __ Dispatch();
 }
 
 
+// LoadSmi8 <dst>, <imm8>
+//
+// Load an 8-bit integer literal into destination register as a Smi.
+void Interpreter::DoLoadSmi8(compiler::InterpreterAssembler* assembler) {
+  // TODO(rmcilroy) Convert an 8-bit integer to a Smi.
+}
+
+
+// Return
+//
 // Return the value in register 0.
 void Interpreter::DoReturn(compiler::InterpreterAssembler* assembler) {
   __ Return();