[Interpreter] Adds support for const/let variables to interpreter.

src/interpreter/bytecode-array-builder.cc

Index: src/interpreter/bytecode-array-builder.cc
diff --git a/src/interpreter/bytecode-array-builder.cc b/src/interpreter/bytecode-array-builder.cc
index c513663a2f97e06d713ae2c418227d597dcf2218..174d81a5059d2c15836dd03f4e0a4c04b088e9a3 100644
--- a/src/interpreter/bytecode-array-builder.cc
+++ b/src/interpreter/bytecode-array-builder.cc
@@ -795,6 +795,8 @@ Bytecode BytecodeArrayBuilder::GetJumpWithToBoolean(Bytecode jump_bytecode) {
     case Bytecode::kJump:
     case Bytecode::kJumpIfNull:
     case Bytecode::kJumpIfUndefined:
+    case Bytecode::kJumpIfHole:
+    case Bytecode::kJumpIfNotHole:
       return jump_bytecode;
     case Bytecode::kJumpIfTrue:
       return Bytecode::kJumpIfToBooleanTrue;
@@ -952,6 +954,14 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::JumpIfUndefined(
   return OutputJump(Bytecode::kJumpIfUndefined, label);
 }
 
+BytecodeArrayBuilder& BytecodeArrayBuilder::JumpIfHole(BytecodeLabel* label) {
+  return OutputJump(Bytecode::kJumpIfHole, label);
+}
+
+BytecodeArrayBuilder& BytecodeArrayBuilder::JumpIfNotHole(
+    BytecodeLabel* label) {
+  return OutputJump(Bytecode::kJumpIfNotHole, label);
+}
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::Throw() {
   Output(Bytecode::kThrow);