[Interpreter] Refactor bytecode generator test suite.

test/cctest/interpreter/bytecode_expectations/PrimitiveReturnStatements.golden

Index: test/cctest/interpreter/bytecode_expectations/PrimitiveReturnStatements.golden
diff --git a/test/cctest/interpreter/bytecode_expectations/PrimitiveReturnStatements.golden b/test/cctest/interpreter/bytecode_expectations/PrimitiveReturnStatements.golden
new file mode 100644
index 0000000000000000000000000000000000000000..b084e3b3bdb6d13585dbde36b02afe1dad64da5a
--- /dev/null
+++ b/test/cctest/interpreter/bytecode_expectations/PrimitiveReturnStatements.golden
@@ -0,0 +1,178 @@
+#
+# Autogenerated by generate-bytecode-expectations
+#
+
+---
+pool type: number
+execute: yes
+wrap: yes
+
+---
+snippet: "
+"
+frame size: 0
+parameter count: 1
+bytecode array length: 3
+bytecodes: [
+  B(StackCheck),
+  B(LdaUndefined),
+  B(Return),
+]
+constant pool: [
+]
+handlers: [
+]
+
+---
+snippet: "
+  return;
+"
+frame size: 0
+parameter count: 1
+bytecode array length: 3
+bytecodes: [
+  B(StackCheck),
+  B(LdaUndefined),
+  B(Return),
+]
+constant pool: [
+]
+handlers: [
+]
+
+---
+snippet: "
+  return null;
+"
+frame size: 0
+parameter count: 1
+bytecode array length: 3
+bytecodes: [
+  B(StackCheck),
+  B(LdaNull),
+  B(Return),
+]
+constant pool: [
+]
+handlers: [
+]
+
+---
+snippet: "
+  return true;
+"
+frame size: 0
+parameter count: 1
+bytecode array length: 3
+bytecodes: [
+  B(StackCheck),
+  B(LdaTrue),
+  B(Return),
+]
+constant pool: [
+]
+handlers: [
+]
+
+---
+snippet: "
+  return false;
+"
+frame size: 0
+parameter count: 1
+bytecode array length: 3
+bytecodes: [
+  B(StackCheck),
+  B(LdaFalse),
+  B(Return),
+]
+constant pool: [
+]
+handlers: [
+]
+
+---
+snippet: "
+  return 0;
+"
+frame size: 0
+parameter count: 1
+bytecode array length: 3
+bytecodes: [
+  B(StackCheck),
+  B(LdaZero),
+  B(Return),
+]
+constant pool: [
+]
+handlers: [
+]
+
+---
+snippet: "
+  return +1;
+"
+frame size: 0
+parameter count: 1
+bytecode array length: 4
+bytecodes: [
+  B(StackCheck),
+  B(LdaSmi8), U8(1),
+  B(Return),
+]
+constant pool: [
+]
+handlers: [
+]
+
+---
+snippet: "
+  return -1;
+"
+frame size: 0
+parameter count: 1
+bytecode array length: 4
+bytecodes: [
+  B(StackCheck),
+  B(LdaSmi8), U8(-1),
+  B(Return),
+]
+constant pool: [
+]
+handlers: [
+]
+
+---
+snippet: "
+  return +127;
+"
+frame size: 0
+parameter count: 1
+bytecode array length: 4
+bytecodes: [
+  B(StackCheck),
+  B(LdaSmi8), U8(127),
+  B(Return),
+]
+constant pool: [
+]
+handlers: [
+]
+
+---
+snippet: "
+  return -128;
+"
+frame size: 0
+parameter count: 1
+bytecode array length: 4
+bytecodes: [
+  B(StackCheck),
+  B(LdaSmi8), U8(-128),
+  B(Return),
+]
+constant pool: [
+]
+handlers: [
+]
+