[runtime] Replace COMPARE/COMPARE_STRONG with proper Object::Compare.

src/runtime.js

Index: src/runtime.js
diff --git a/src/runtime.js b/src/runtime.js
index a49a3bdfa991279df019c6d944cb6d3e2c08bf82..9ace6ff821db13e977c9c1d387ef433f787805c3 100644
--- a/src/runtime.js
+++ b/src/runtime.js
@@ -38,57 +38,6 @@ var isConcatSpreadableSymbol =
 
 // ----------------------------------------------------------------------------
 
-/* -----------------------------------
-- - -   C o m p a r i s o n   - - -
------------------------------------
-*/
-
-// ECMA-262, section 11.8.5, page 53. The 'ncr' parameter is used as
-// the result when either (or both) the operands are NaN.
-function COMPARE(x, ncr) {
-  var left;
-  var right;
-  // Fast cases for string, numbers and undefined compares.
-  if (IS_STRING(this)) {
-    if (IS_STRING(x)) return %_StringCompare(this, x);
-    if (IS_UNDEFINED(x)) return ncr;
-    left = this;
-  } else if (IS_NUMBER(this)) {
-    if (IS_NUMBER(x)) return %NumberCompare(this, x, ncr);
-    if (IS_UNDEFINED(x)) return ncr;
-    left = this;
-  } else if (IS_UNDEFINED(this)) {
-    if (!IS_UNDEFINED(x)) {
-      %to_primitive(x, NUMBER_HINT);
-    }
-    return ncr;
-  } else if (IS_UNDEFINED(x)) {
-    %to_primitive(this, NUMBER_HINT);
-    return ncr;
-  } else {
-    left = %to_primitive(this, NUMBER_HINT);
-  }
-
-  right = %to_primitive(x, NUMBER_HINT);
-  if (IS_STRING(left) && IS_STRING(right)) {
-    return %_StringCompare(left, right);
-  } else {
-    var left_number = %to_number_fun(left);
-    var right_number = %to_number_fun(right);
-    if (NUMBER_IS_NAN(left_number) || NUMBER_IS_NAN(right_number)) return ncr;
-    return %NumberCompare(left_number, right_number, ncr);
-  }
-}
-
-// Strong mode COMPARE throws if an implicit conversion would be performed
-function COMPARE_STRONG(x, ncr) {
-  if (IS_STRING(this) && IS_STRING(x)) return %_StringCompare(this, x);
-  if (IS_NUMBER(this) && IS_NUMBER(x)) return %NumberCompare(this, x, ncr);
-
-  throw %make_type_error(kStrongImplicitConversion);
-}
-
-
 /* -----------------------------
    - - -   H e l p e r s   - - -
    -----------------------------
@@ -433,8 +382,6 @@ $toString = ToString;
 
 %InstallToContext([
   "apply_prepare_builtin", APPLY_PREPARE,
-  "compare_builtin", COMPARE,
-  "compare_strong_builtin", COMPARE_STRONG,
   "concat_iterable_to_array_builtin", CONCAT_ITERABLE_TO_ARRAY,
   "reflect_apply_prepare_builtin", REFLECT_APPLY_PREPARE,
   "reflect_construct_prepare_builtin", REFLECT_CONSTRUCT_PREPARE,