[interpreter] Introduce fused bytecodes for common sequences.

test/cctest/interpreter/bytecode_expectations/CallRuntime.golden

Index: test/cctest/interpreter/bytecode_expectations/CallRuntime.golden
diff --git a/test/cctest/interpreter/bytecode_expectations/CallRuntime.golden b/test/cctest/interpreter/bytecode_expectations/CallRuntime.golden
index 69edeccc3f2767cb4fc505a0fd980dd463c39b05..c5e9c4dcddc1a1bfd57c5df6a3ec9b661ccc331a 100644
--- a/test/cctest/interpreter/bytecode_expectations/CallRuntime.golden
+++ b/test/cctest/interpreter/bytecode_expectations/CallRuntime.golden
@@ -76,11 +76,10 @@ snippet: "
 "
 frame size: 2
 parameter count: 1
-bytecode array length: 15
+bytecode array length: 14
 bytecodes: [
   /*   10 E> */ B(StackCheck),
-  /*   15 S> */ B(LdaUndefined),
-                B(Star), R(0),
+  /*   15 S> */ B(LdrUndefined), R(0),
                 B(CreateArrayLiteral), U8(0), U8(0), U8(3),
                 B(Star), R(1),
                 B(CallJSRuntime), U8(122), R(0), U8(2),