[Interpreter] Refactor bytecode generator test suite.

test/cctest/interpreter/bytecode_expectations/CallRuntime.golden

+#
+# Autogenerated by generate-bytecode-expectations.
+#
+
+---
+pool type: mixed
+execute: yes
+wrap: no
+test function name: f
+
+---
+snippet: "
+  function f() { %TheHole() }
+  f();
+"
+frame size: 0
+parameter count: 1
+bytecode array length: 8
+bytecodes: [
+  B(StackCheck),
+  B(CallRuntime), U16(Runtime::kTheHole), R(0), U8(0),
+  B(LdaUndefined),
+  B(Return),
+]
+constant pool: [
+]
+handlers: [
+]
+
+---
+snippet: "
+  function f(a) { return %IsArray(a) }
+  f(undefined);
+"
+frame size: 1
+parameter count: 2
+bytecode array length: 11
+bytecodes: [
+  B(StackCheck),
+  B(Ldar), R(arg0),
+  B(Star), R(0),
+  B(CallRuntime), U16(Runtime::kIsArray), R(0), U8(1),
+  B(Return),
+]
+constant pool: [
+]
+handlers: [
+]
+
+---
+snippet: "
+  function f() { return %Add(1, 2) }
+  f();
+"
+frame size: 2
+parameter count: 1
+bytecode array length: 15
+bytecodes: [
+  B(StackCheck),
+  B(LdaSmi8), U8(1),
+  B(Star), R(0),
+  B(LdaSmi8), U8(2),
+  B(Star), R(1),
+  B(CallRuntime), U16(Runtime::kAdd), R(0), U8(2),
+  B(Return),
+]
+constant pool: [
+]
+handlers: [
+]
+
+---
+snippet: "
+  function f() { return %spread_iterable([1]) }
+  f();
+"
+frame size: 2
+parameter count: 1
+bytecode array length: 16
+bytecodes: [
+  B(StackCheck),
+  B(LdaUndefined),
+  B(Star), R(0),
+  B(CreateArrayLiteral), U8(0), U8(0), U8(3),
+  B(Star), R(1),
+  B(CallJSRuntime), U16(127), R(0), U8(2),
+  B(Return),
+]
+constant pool: [
+  InstanceType::FIXED_ARRAY_TYPE,
+]
+handlers: [
+]
+