[Interpreter] Add support for JS calls.

src/interpreter/bytecodes.h

Index: src/interpreter/bytecodes.h
diff --git a/src/interpreter/bytecodes.h b/src/interpreter/bytecodes.h
index 9ab9c6fa5df8e18182fb7d4ef018c1f99d815122..f4756516f16f874c248f266af95e32582fd2d829 100644
--- a/src/interpreter/bytecodes.h
+++ b/src/interpreter/bytecodes.h
@@ -18,6 +18,7 @@ namespace interpreter {
 // The list of operand types used by bytecodes.
 #define OPERAND_TYPE_LIST(V) \
   V(None)                    \
+  V(Count)                   \
   V(Imm8)                    \
   V(Idx)                     \
   V(Reg)
@@ -54,6 +55,9 @@ namespace interpreter {
   V(Div, OperandType::kReg)                                                \
   V(Mod, OperandType::kReg)                                                \
                                                                            \
+  /* Call operations. */                                                   \
+  V(Call, OperandType::kReg, OperandType::kReg, OperandType::kCount)       \
+                                                                           \
   /* Control Flow */                                                       \
   V(Return, OperandType::kNone)