[interpreter] Introduce bytecode generation pipeline.

test/cctest/interpreter/bytecode_expectations/AssignmentsInBinaryExpression.golden

Index: test/cctest/interpreter/bytecode_expectations/AssignmentsInBinaryExpression.golden
diff --git a/test/cctest/interpreter/bytecode_expectations/AssignmentsInBinaryExpression.golden b/test/cctest/interpreter/bytecode_expectations/AssignmentsInBinaryExpression.golden
index 1b88e085e80e4b4f37b1ce9a6142b10f60516f62..8644f8faec3c947387027e15dd47a8e527a53b0a 100644
--- a/test/cctest/interpreter/bytecode_expectations/AssignmentsInBinaryExpression.golden
+++ b/test/cctest/interpreter/bytecode_expectations/AssignmentsInBinaryExpression.golden
@@ -44,7 +44,7 @@ snippet: "
 "
 frame size: 2
 parameter count: 1
-bytecode array length: 12
+bytecode array length: 13
 bytecodes: [
   B(StackCheck),
   B(LdaSmi), U8(55),
@@ -52,6 +52,7 @@ bytecodes: [
   B(LdaSmi), U8(100),
   B(Star), R(0),
   B(Star), R(1),
+  B(Nop),
   B(Return),
 ]
 constant pool: [
@@ -67,7 +68,7 @@ snippet: "
 "
 frame size: 3
 parameter count: 1
-bytecode array length: 24
+bytecode array length: 25
 bytecodes: [
   B(StackCheck),
   B(LdaSmi), U8(55),
@@ -81,6 +82,7 @@ bytecodes: [
   B(Star), R(0),
   B(Add), R(2),
   B(Star), R(0),
+  B(Nop),
   B(Return),
 ]
 constant pool: [
@@ -97,7 +99,7 @@ snippet: "
 "
 frame size: 3
 parameter count: 1
-bytecode array length: 32
+bytecode array length: 33
 bytecodes: [
   B(StackCheck),
   B(LdaSmi), U8(55),
@@ -116,6 +118,7 @@ bytecodes: [
   B(Star), R(1),
   B(Inc),
   B(Star), R(0),
+  B(Nop),
   B(Return),
 ]
 constant pool: [
@@ -131,7 +134,7 @@ snippet: "
 "
 frame size: 4
 parameter count: 1
-bytecode array length: 32
+bytecode array length: 33
 bytecodes: [
   B(StackCheck),
   B(LdaSmi), U8(55),
@@ -149,6 +152,7 @@ bytecodes: [
   B(Star), R(0),
   B(Add), R(2),
   B(Star), R(1),
+  B(Nop),
   B(Return),
 ]
 constant pool: [
@@ -164,7 +168,7 @@ snippet: "
 "
 frame size: 3
 parameter count: 1
-bytecode array length: 32
+bytecode array length: 33
 bytecodes: [
   B(StackCheck),
   B(LdaSmi), U8(55),
@@ -182,6 +186,7 @@ bytecodes: [
   B(Star), R(0),
   B(Add), R(1),
   B(Star), R(0),
+  B(Nop),
   B(Return),
 ]
 constant pool: [