Improve equal operations.

The implementation is simplified and optimized
resulting the removal a large amount of code.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com

jerry-core/ecma/base/ecma-helpers-value.c

@@ -113,6 +113,18 @@ ecma_get_pointer_from_ecma_value (ecma_value_t value) /**< value */
 #endif /* ECMA_VALUE_CAN_STORE_UINTPTR_VALUE_DIRECTLY */
 } /* ecma_get_pointer_from_ecma_value */
 
+/**
+ * Check if the value is direct ecma-value.
+ *
+ * @return true - if the value is a direct value,
+ *         false - otherwise.
+ */
+inline bool __attr_pure___ __attr_always_inline___
+ecma_is_value_direct (ecma_value_t value) /**< ecma value */
+{
+  return (ecma_get_value_type_field (value) == ECMA_TYPE_DIRECT);
+} /* ecma_is_value_direct */
+
 /**
  * Check if the value is simple ecma-value.
  *

jerry-core/ecma/base/ecma-helpers.h

@@ -114,6 +114,7 @@
   }
 
 /* ecma-helpers-value.c */
+extern bool ecma_is_value_direct (ecma_value_t) __attr_pure___;
 extern bool ecma_is_value_simple (ecma_value_t) __attr_pure___;
 extern bool ecma_is_value_empty (ecma_value_t) __attr_pure___;
 extern bool ecma_is_value_undefined (ecma_value_t) __attr_pure___;

jerry-core/ecma/operations/ecma-comparison.c

@@ -38,41 +38,22 @@ ecma_value_t
 ecma_op_abstract_equality_compare (ecma_value_t x, /**< first operand */
                                    ecma_value_t y) /**< second operand */
 {
-  const bool is_x_undefined = ecma_is_value_undefined (x);
+  if (x == y)
-  const bool is_x_null = ecma_is_value_null (x);
-  const bool is_x_boolean = ecma_is_value_boolean (x);
-  const bool is_x_number = ecma_is_value_number (x);
-  const bool is_x_string = ecma_is_value_string (x);
-  const bool is_x_object = ecma_is_value_object (x);
-
-  const bool is_y_undefined = ecma_is_value_undefined (y);
-  const bool is_y_null = ecma_is_value_null (y);
-  const bool is_y_boolean = ecma_is_value_boolean (y);
-  const bool is_y_number = ecma_is_value_number (y);
-  const bool is_y_string = ecma_is_value_string (y);
-  const bool is_y_object = ecma_is_value_object (y);
-
-  const bool is_types_equal = ((is_x_undefined && is_y_undefined)
-                               || (is_x_null && is_y_null)
-                               || (is_x_boolean && is_y_boolean)
-                               || (is_x_number && is_y_number)
-                               || (is_x_string && is_y_string)
-                               || (is_x_object && is_y_object));
-
-  ecma_value_t ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);
-
-  if (is_types_equal)
   {
-    // 1.
+    return ecma_make_simple_value (ECMA_SIMPLE_VALUE_TRUE);
+  }
 
-    if (is_x_undefined
+  if (ecma_are_values_integer_numbers (x, y))
-        || is_x_null)
+  {
+    /* Note: the (x == y) comparison captures the true case. */
+    return ecma_make_simple_value (ECMA_SIMPLE_VALUE_FALSE);
+  }
+
+  if (ecma_is_value_number (x))
+  {
+    if (ecma_is_value_number (y))
     {
-      // a., b.
+      // 1.c
-      ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_TRUE);
-    }
-    else if (is_x_number)
-    { // c.
       ecma_number_t x_num = ecma_get_number_from_value (x);
       ecma_number_t y_num = ecma_get_number_from_value (y);
 
@@ -100,111 +81,104 @@ ecma_op_abstract_equality_compare (ecma_value_t x, /**< first operand */
       JERRY_ASSERT (is_x_equal_to_y == is_x_equal_to_y_check);
 #endif /* !JERRY_NDEBUG */
 
-      ret_value = ecma_make_simple_value (is_x_equal_to_y ? ECMA_SIMPLE_VALUE_TRUE : ECMA_SIMPLE_VALUE_FALSE);
+      return ecma_make_simple_value (is_x_equal_to_y ? ECMA_SIMPLE_VALUE_TRUE : ECMA_SIMPLE_VALUE_FALSE);
     }
-    else if (is_x_string)
+
-    { // d.
+    /* Swap values. */
+    ecma_value_t tmp = x;
+    x = y;
+    y = tmp;
+  }
+
+  if (ecma_is_value_string (x))
+  {
+    if (ecma_is_value_string (y))
+    {
+      // 1., d.
       ecma_string_t *x_str_p = ecma_get_string_from_value (x);
       ecma_string_t *y_str_p = ecma_get_string_from_value (y);
 
       bool is_equal = ecma_compare_ecma_strings (x_str_p, y_str_p);
 
-      ret_value = ecma_make_simple_value (is_equal ? ECMA_SIMPLE_VALUE_TRUE : ECMA_SIMPLE_VALUE_FALSE);
+      return ecma_make_simple_value (is_equal ? ECMA_SIMPLE_VALUE_TRUE : ECMA_SIMPLE_VALUE_FALSE);
     }
-    else if (is_x_boolean)
-    { // e.
-      bool is_equal = (ecma_is_value_true (x) == ecma_is_value_true (y));
 
-      ret_value = ecma_make_simple_value (is_equal ? ECMA_SIMPLE_VALUE_TRUE : ECMA_SIMPLE_VALUE_FALSE);
+    if (ecma_is_value_number (y))
+    {
+      // 4.
+      ecma_value_t x_num_value = ecma_op_to_number (x);
+
+      if (ecma_is_value_error (x_num_value))
+      {
+        return x_num_value;
+      }
+
+      ecma_value_t compare_result = ecma_op_abstract_equality_compare (x_num_value, y);
+
+      ecma_free_value (x_num_value);
+      return compare_result;
     }
-    else
-    { // f.
-      JERRY_ASSERT (is_x_object);
 
-      bool is_equal = (ecma_get_object_from_value (x) == ecma_get_object_from_value (y));
+    /* Swap values. */
-
+    ecma_value_t tmp = x;
-      ret_value = ecma_make_simple_value (is_equal ? ECMA_SIMPLE_VALUE_TRUE : ECMA_SIMPLE_VALUE_FALSE);
+    x = y;
-    }
+    y = tmp;
   }
-  else if ((is_x_null && is_y_undefined)
+
-           || (is_x_undefined && is_y_null))
+  if (ecma_is_value_boolean (y))
-  { // 2., 3.
-    ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_TRUE);
-  }
-  else if (is_x_number && is_y_string)
   {
-    // 4.
+    if (ecma_is_value_boolean (x))
-    ECMA_TRY_CATCH (y_num_value,
+    {
-                    ecma_op_to_number (y),
+      // 1., e.
-                    ret_value);
+      /* Note: the (x == y) comparison captures the true case. */
+      return ecma_make_simple_value (ECMA_SIMPLE_VALUE_FALSE);
+    }
 
-    ret_value = ecma_op_abstract_equality_compare (x, y_num_value);
+    // 7.
-
+    return ecma_op_abstract_equality_compare (x, ecma_make_integer_value (ecma_is_value_true (y) ? 1 : 0));
-    ECMA_FINALIZE (y_num_value);
   }
-  else if (is_x_string && is_y_number)
+
+  if (ecma_is_value_object (x))
   {
-    // 5.
+    if (ecma_is_value_string (y)
-    ECMA_TRY_CATCH (x_num_value,
+        || ecma_is_value_number (y))
-                    ecma_op_to_number (x),
+    {
-                    ret_value);
+      // 9.
+      ecma_value_t x_prim_value = ecma_op_to_primitive (x, ECMA_PREFERRED_TYPE_NO);
 
-    ret_value = ecma_op_abstract_equality_compare (x_num_value, y);
+      if (ecma_is_value_error (x_prim_value))
+      {
+        return x_prim_value;
+      }
 
-    ECMA_FINALIZE (x_num_value);
+      ecma_value_t compare_result = ecma_op_abstract_equality_compare (x_prim_value, y);
+
+      ecma_free_value (x_prim_value);
+      return compare_result;
+    }
+
+    // 1., f.
+    /* Note: the (x == y) comparison captures the true case. */
+    return ecma_make_simple_value (ECMA_SIMPLE_VALUE_FALSE);
   }
-  else if (is_x_boolean)
+
+  if (ecma_is_value_boolean (x))
   {
     // 6.
-    ECMA_TRY_CATCH (x_num_value,
+    return ecma_op_abstract_equality_compare (ecma_make_integer_value (ecma_is_value_true (x) ? 1 : 0), y);
-                    ecma_op_to_number (x),
-                    ret_value);
-
-    ret_value = ecma_op_abstract_equality_compare (x_num_value, y);
-
-    ECMA_FINALIZE (x_num_value);
   }
-  else if (is_y_boolean)
+
+  if (ecma_is_value_undefined (x)
+      || ecma_is_value_null (x))
   {
-    // 7.
+    // 1. a., b.
-    ECMA_TRY_CATCH (y_num_value,
+    // 2., 3.
-                    ecma_op_to_number (y),
+    bool is_equal = ecma_is_value_undefined (y) || ecma_is_value_null (y);
-                    ret_value);
 
-    ret_value = ecma_op_abstract_equality_compare (x, y_num_value);
+    return ecma_make_simple_value (is_equal ? ECMA_SIMPLE_VALUE_TRUE : ECMA_SIMPLE_VALUE_FALSE);
-
-    ECMA_FINALIZE (y_num_value);
-  }
-  else if (is_y_object
-           && (is_x_number || is_x_string))
-  {
-    // 8.
-    ECMA_TRY_CATCH (y_prim_value,
-                    ecma_op_to_primitive (y, ECMA_PREFERRED_TYPE_NO),
-                    ret_value);
-
-    ret_value = ecma_op_abstract_equality_compare (x, y_prim_value);
-
-    ECMA_FINALIZE (y_prim_value);
-  }
-  else if (is_x_object
-           && (is_y_number || is_y_string))
-  {
-    // 9.
-    ECMA_TRY_CATCH (x_prim_value,
-                    ecma_op_to_primitive (x, ECMA_PREFERRED_TYPE_NO),
-                    ret_value);
-
-    ret_value = ecma_op_abstract_equality_compare (x_prim_value, y);
-
-    ECMA_FINALIZE (x_prim_value);
-  }
-  else
-  {
-    ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_FALSE);
   }
 
-  return ret_value;
+  return ecma_make_simple_value (ECMA_SIMPLE_VALUE_FALSE);
 } /* ecma_op_abstract_equality_compare */
 
 /**
@@ -219,104 +193,81 @@ bool
 ecma_op_strict_equality_compare (ecma_value_t x, /**< first operand */
                                  ecma_value_t y) /**< second operand */
 {
-  const bool is_x_undefined = ecma_is_value_undefined (x);
+  if (ecma_is_value_direct (x)
-  const bool is_x_null = ecma_is_value_null (x);
+      || ecma_is_value_direct (y)
-  const bool is_x_boolean = ecma_is_value_boolean (x);
+      || ecma_is_value_object (x)
-  const bool is_x_number = ecma_is_value_number (x);
+      || ecma_is_value_object (y))
-  const bool is_x_string = ecma_is_value_string (x);
-  const bool is_x_object = ecma_is_value_object (x);
-
-  const bool is_y_undefined = ecma_is_value_undefined (y);
-  const bool is_y_null = ecma_is_value_null (y);
-  const bool is_y_boolean = ecma_is_value_boolean (y);
-  const bool is_y_number = ecma_is_value_number (y);
-  const bool is_y_string = ecma_is_value_string (y);
-  const bool is_y_object = ecma_is_value_object (y);
-
-  const bool is_types_equal = ((is_x_undefined && is_y_undefined)
-                               || (is_x_null && is_y_null)
-                               || (is_x_boolean && is_y_boolean)
-                               || (is_x_number && is_y_number)
-                               || (is_x_string && is_y_string)
-                               || (is_x_object && is_y_object));
-
-  // 1. If Type (x) is different from Type (y), return false.
-  if (!is_types_equal)
   {
-    return false;
+    JERRY_ASSERT (!ecma_is_value_direct (x)
-  }
+                  || ecma_is_value_undefined (x)
+                  || ecma_is_value_null (x)
+                  || ecma_is_value_boolean (x)
+                  || ecma_is_value_integer_number (x));
 
-  // 2. If Type (x) is Undefined, return true.
+    JERRY_ASSERT (!ecma_is_value_direct (y)
-  if (is_x_undefined)
+                  || ecma_is_value_undefined (y)
-  {
+                  || ecma_is_value_null (y)
-    return true;
+                  || ecma_is_value_boolean (y)
-  }
+                  || ecma_is_value_integer_number (y));
 
-  // 3. If Type (x) is Null, return true.
+    if ((x != ecma_make_integer_value (0) || !ecma_is_value_float_number (y))
-  if (is_x_null)
+        && (y != ecma_make_integer_value (0) || !ecma_is_value_float_number (x)))
-  {
-    return true;
-  }
-
-  // 4. If Type (x) is Number, then
-  if (is_x_number)
-  {
-    // a. If x is NaN, return false.
-    // b. If y is NaN, return false.
-    // c. If x is the same Number value as y, return true.
-    // d. If x is +0 and y is -0, return true.
-    // e. If x is -0 and y is +0, return true.
-
-    ecma_number_t x_num = ecma_get_number_from_value (x);
-    ecma_number_t y_num = ecma_get_number_from_value (y);
-
-    bool is_x_equal_to_y = (x_num == y_num);
-
-#ifndef JERRY_NDEBUG
-    bool is_x_equal_to_y_check;
-
-    if (ecma_number_is_nan (x_num)
-        || ecma_number_is_nan (y_num))
     {
-      is_x_equal_to_y_check = false;
+      return (x == y);
-    }
-    else if (x_num == y_num
-             || (ecma_number_is_zero (x_num)
-                 && ecma_number_is_zero (y_num)))
-    {
-      is_x_equal_to_y_check = true;
-    }
-    else
-    {
-      is_x_equal_to_y_check = false;
     }
 
-    JERRY_ASSERT (is_x_equal_to_y == is_x_equal_to_y_check);
+    /* The +0 === -0 case handled below. */
-#endif /* !JERRY_NDEBUG */
-
-    return is_x_equal_to_y;
   }
 
-  // 5. If Type (x) is String, then return true if x and y are exactly the same sequence of characters
+  JERRY_ASSERT (ecma_is_value_number (x) || ecma_is_value_string (x));
-  // (same length and same characters in corresponding positions); otherwise, return false.
+  JERRY_ASSERT (ecma_is_value_number (y) || ecma_is_value_string (y));
-  if (is_x_string)
+
+  if (ecma_is_value_string (x))
   {
+    if (!ecma_is_value_string (y))
+    {
+      return false;
+    }
+
     ecma_string_t *x_str_p = ecma_get_string_from_value (x);
     ecma_string_t *y_str_p = ecma_get_string_from_value (y);
 
     return ecma_compare_ecma_strings (x_str_p, y_str_p);
   }
 
-  // 6. If Type (x) is Boolean, return true if x and y are both true or both false; otherwise, return false.
+  if (!ecma_is_value_number (y))
-  if (is_x_boolean)
   {
-    return (ecma_is_value_true (x) == ecma_is_value_true (y));
+    return false;
   }
 
-  // 7. Return true if x and y refer to the same object. Otherwise, return false.
+  ecma_number_t x_num = ecma_get_number_from_value (x);
-  JERRY_ASSERT (is_x_object);
+  ecma_number_t y_num = ecma_get_number_from_value (y);
 
-  return (ecma_get_object_from_value (x) == ecma_get_object_from_value (y));
+  bool is_x_equal_to_y = (x_num == y_num);
+
+#ifndef JERRY_NDEBUG
+  bool is_x_equal_to_y_check;
+
+  if (ecma_number_is_nan (x_num)
+      || ecma_number_is_nan (y_num))
+  {
+    is_x_equal_to_y_check = false;
+  }
+  else if (x_num == y_num
+           || (ecma_number_is_zero (x_num)
+               && ecma_number_is_zero (y_num)))
+  {
+    is_x_equal_to_y_check = true;
+  }
+  else
+  {
+    is_x_equal_to_y_check = false;
+  }
+
+  JERRY_ASSERT (is_x_equal_to_y == is_x_equal_to_y_check);
+#endif /* !JERRY_NDEBUG */
+
+  return is_x_equal_to_y;
 } /* ecma_op_strict_equality_compare */
 
 /**

jerry-core/vm/opcodes-ecma-equality.c

@@ -47,29 +47,13 @@ opfunc_equal_value (ecma_value_t left_value, /**< left value */
   JERRY_ASSERT (!ecma_is_value_error (left_value)
                 && !ecma_is_value_error (right_value));
 
-  if (ecma_are_values_integer_numbers (left_value, right_value))
+  ecma_value_t compare_result = ecma_op_abstract_equality_compare (left_value,
-  {
+                                                                   right_value);
-    if (left_value == right_value)
-    {
-      return ecma_make_simple_value (ECMA_SIMPLE_VALUE_TRUE);
-    }
-    return ecma_make_simple_value (ECMA_SIMPLE_VALUE_FALSE);
-  }
 
-  ecma_value_t ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);
+  JERRY_ASSERT (ecma_is_value_boolean (compare_result)
+                || ecma_is_value_error (compare_result));
 
-  ECMA_TRY_CATCH (compare_result,
+  return compare_result;
-                  ecma_op_abstract_equality_compare (left_value,
-                                                     right_value),
-                  ret_value);
-
-  JERRY_ASSERT (ecma_is_value_boolean (compare_result));
-
-  ret_value = compare_result;
-
-  ECMA_FINALIZE (compare_result);
-
-  return ret_value;
 } /* opfunc_equal_value */
 
 /**
@@ -87,93 +71,20 @@ opfunc_not_equal_value (ecma_value_t left_value, /**< left value */
   JERRY_ASSERT (!ecma_is_value_error (left_value)
                 && !ecma_is_value_error (right_value));
 
-  if (ecma_are_values_integer_numbers (left_value, right_value))
+  ecma_value_t compare_result = ecma_op_abstract_equality_compare (left_value,
+                                                                   right_value);
+
+  JERRY_ASSERT (ecma_is_value_boolean (compare_result)
+                || ecma_is_value_error (compare_result));
+
+  if (!ecma_is_value_error (compare_result))
   {
-    if (left_value == right_value)
+    compare_result = ecma_invert_boolean_value (compare_result);
-    {
-      return ecma_make_simple_value (ECMA_SIMPLE_VALUE_FALSE);
-    }
-    return ecma_make_simple_value (ECMA_SIMPLE_VALUE_TRUE);
   }
 
-  ecma_value_t ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);
+  return compare_result;
-
-  ECMA_TRY_CATCH (compare_result,
-                  ecma_op_abstract_equality_compare (left_value, right_value),
-                  ret_value);
-
-  JERRY_ASSERT (ecma_is_value_boolean (compare_result));
-
-  bool is_equal = ecma_is_value_true (compare_result);
-
-  ret_value = ecma_make_simple_value (is_equal ? ECMA_SIMPLE_VALUE_FALSE
-                                               : ECMA_SIMPLE_VALUE_TRUE);
-
-  ECMA_FINALIZE (compare_result);
-
-  return ret_value;
 } /* opfunc_not_equal_value */
 
-/**
- * 'Strict Equals' opcode handler.
- *
- * See also: ECMA-262 v5, 11.9.4
- *
- * @return ecma value
- *         Returned value must be freed with ecma_free_value
- */
-ecma_value_t
-opfunc_equal_value_type (ecma_value_t left_value, /**< left value */
-                         ecma_value_t right_value) /**< right value */
-{
-  JERRY_ASSERT (!ecma_is_value_error (left_value)
-                && !ecma_is_value_error (right_value));
-
-  if (ecma_are_values_integer_numbers (left_value, right_value))
-  {
-    if (left_value == right_value)
-    {
-      return ecma_make_simple_value (ECMA_SIMPLE_VALUE_TRUE);
-    }
-    return ecma_make_simple_value (ECMA_SIMPLE_VALUE_FALSE);
-  }
-
-  bool is_equal = ecma_op_strict_equality_compare (left_value, right_value);
-
-  return ecma_make_simple_value (is_equal ? ECMA_SIMPLE_VALUE_TRUE
-                                          : ECMA_SIMPLE_VALUE_FALSE);
-} /* opfunc_equal_value_type */
-
-/**
- * 'Strict Does-not-equals' opcode handler.
- *
- * See also: ECMA-262 v5, 11.9.5
- *
- * @return ecma value
- *         Returned value must be freed with ecma_free_value
- */
-ecma_value_t
-opfunc_not_equal_value_type (ecma_value_t left_value, /**< left value */
-                             ecma_value_t right_value) /**< right value */
-{
-  JERRY_ASSERT (!ecma_is_value_error (left_value)
-                && !ecma_is_value_error (right_value));
-
-  if (ecma_are_values_integer_numbers (left_value, right_value))
-  {
-    if (left_value == right_value)
-    {
-      return ecma_make_simple_value (ECMA_SIMPLE_VALUE_FALSE);
-    }
-    return ecma_make_simple_value (ECMA_SIMPLE_VALUE_TRUE);
-  }
-
-  bool is_equal = ecma_op_strict_equality_compare (left_value, right_value);
-
-  return ecma_make_simple_value (is_equal ? ECMA_SIMPLE_VALUE_FALSE
-                                          : ECMA_SIMPLE_VALUE_TRUE);
-} /* opfunc_not_equal_value_type */
-
 /**
  * @}
  * @}

jerry-core/vm/opcodes.h

@@ -62,12 +62,6 @@ opfunc_equal_value (ecma_value_t, ecma_value_t);
 ecma_value_t
 opfunc_not_equal_value (ecma_value_t, ecma_value_t);
 
-ecma_value_t
-opfunc_equal_value_type (ecma_value_t, ecma_value_t);
-
-ecma_value_t
-opfunc_not_equal_value_type (ecma_value_t, ecma_value_t);
-
 ecma_value_t
 do_number_arithmetic (number_arithmetic_op, ecma_value_t, ecma_value_t);
 

jerry-core/vm/vm.c

@@ -19,6 +19,7 @@
 #include "ecma-alloc.h"
 #include "ecma-array-object.h"
 #include "ecma-builtins.h"
+#include "ecma-comparison.h"
 #include "ecma-conversion.h"
 #include "ecma-exceptions.h"
 #include "ecma-function-object.h"
@@ -1483,17 +1484,7 @@ vm_loop (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
         {
           JERRY_ASSERT (stack_top_p > frame_ctx_p->registers_p + register_end);
 
-          last_completion_value = opfunc_equal_value_type (left_value,
+          if (ecma_op_strict_equality_compare (left_value, stack_top_p[-1]))
-                                                           stack_top_p[-1]);
-
-          if (ecma_is_value_error (last_completion_value))
-          {
-            goto error;
-          }
-
-          result = last_completion_value;
-
-          if (result == ecma_make_simple_value (ECMA_SIMPLE_VALUE_TRUE))
           {
             byte_code_p = byte_code_start_p + branch_offset;
             ecma_free_value (*--stack_top_p);
@@ -1726,26 +1717,18 @@ vm_loop (vm_frame_ctx_t *frame_ctx_p) /**< frame context */
         }
         case VM_OC_STRICT_EQUAL:
         {
-          last_completion_value = opfunc_equal_value_type (left_value, right_value);
+          bool is_equal = ecma_op_strict_equality_compare (left_value, right_value);
 
-          if (ecma_is_value_error (last_completion_value))
+          result = ecma_make_simple_value (is_equal ? ECMA_SIMPLE_VALUE_TRUE
-          {
+                                                    : ECMA_SIMPLE_VALUE_FALSE);
-            goto error;
-          }
-
-          result = last_completion_value;
           break;
         }
         case VM_OC_STRICT_NOT_EQUAL:
         {
-          last_completion_value = opfunc_not_equal_value_type (left_value, right_value);
+          bool is_equal = ecma_op_strict_equality_compare (left_value, right_value);
 
-          if (ecma_is_value_error (last_completion_value))
+          result = ecma_make_simple_value (is_equal ? ECMA_SIMPLE_VALUE_FALSE
-          {
+                                                    : ECMA_SIMPLE_VALUE_TRUE);
-            goto error;
-          }
-
-          result = last_completion_value;
           break;
         }
         case VM_OC_BIT_OR: