Revert of [Interpreter] Optimize BytecodeArrayBuilder and BytecodeArrayWriter.

src/interpreter/bytecode-pipeline.cc

Index: src/interpreter/bytecode-pipeline.cc
diff --git a/src/interpreter/bytecode-pipeline.cc b/src/interpreter/bytecode-pipeline.cc
index 6e6a6b6fab6af113e197826b7c33b9aeb56e3192..66b8bdf533cf7006cb81c18f4d48f0a37b4a7cef 100644
--- a/src/interpreter/bytecode-pipeline.cc
+++ b/src/interpreter/bytecode-pipeline.cc
@@ -10,6 +10,45 @@
 namespace v8 {
 namespace internal {
 namespace interpreter {
+
+BytecodeNode::BytecodeNode(Bytecode bytecode) {
+  DCHECK_EQ(Bytecodes::NumberOfOperands(bytecode), 0);
+  bytecode_ = bytecode;
+}
+
+BytecodeNode::BytecodeNode(Bytecode bytecode, uint32_t operand0) {
+  DCHECK_EQ(Bytecodes::NumberOfOperands(bytecode), 1);
+  bytecode_ = bytecode;
+  operands_[0] = operand0;
+}
+
+BytecodeNode::BytecodeNode(Bytecode bytecode, uint32_t operand0,
+                           uint32_t operand1) {
+  DCHECK_EQ(Bytecodes::NumberOfOperands(bytecode), 2);
+  bytecode_ = bytecode;
+  operands_[0] = operand0;
+  operands_[1] = operand1;
+}
+
+BytecodeNode::BytecodeNode(Bytecode bytecode, uint32_t operand0,
+                           uint32_t operand1, uint32_t operand2) {
+  DCHECK_EQ(Bytecodes::NumberOfOperands(bytecode), 3);
+  bytecode_ = bytecode;
+  operands_[0] = operand0;
+  operands_[1] = operand1;
+  operands_[2] = operand2;
+}
+
+BytecodeNode::BytecodeNode(Bytecode bytecode, uint32_t operand0,
+                           uint32_t operand1, uint32_t operand2,
+                           uint32_t operand3) {
+  DCHECK_EQ(Bytecodes::NumberOfOperands(bytecode), 4);
+  bytecode_ = bytecode;
+  operands_[0] = operand0;
+  operands_[1] = operand1;
+  operands_[2] = operand2;
+  operands_[3] = operand3;
+}
 
 BytecodeNode::BytecodeNode(const BytecodeNode& other) {
   memcpy(this, &other, sizeof(other));
@@ -44,6 +83,23 @@
 #endif  // DEBUG
 }
 
+void BytecodeNode::Transform(Bytecode new_bytecode, uint32_t extra_operand) {
+  DCHECK_EQ(Bytecodes::NumberOfOperands(new_bytecode),
+            Bytecodes::NumberOfOperands(bytecode()) + 1);
+  DCHECK(Bytecodes::NumberOfOperands(bytecode()) < 1 ||
+         Bytecodes::GetOperandType(new_bytecode, 0) ==
+             Bytecodes::GetOperandType(bytecode(), 0));
+  DCHECK(Bytecodes::NumberOfOperands(bytecode()) < 2 ||
+         Bytecodes::GetOperandType(new_bytecode, 1) ==
+             Bytecodes::GetOperandType(bytecode(), 1));
+  DCHECK(Bytecodes::NumberOfOperands(bytecode()) < 3 ||
+         Bytecodes::GetOperandType(new_bytecode, 2) ==
+             Bytecodes::GetOperandType(bytecode(), 2));
+  DCHECK(Bytecodes::NumberOfOperands(bytecode()) < 4);
+  operands_[operand_count()] = extra_operand;
+  bytecode_ = new_bytecode;
+}
+
 bool BytecodeNode::operator==(const BytecodeNode& other) const {
   if (this == &other) {
     return true;