Revert of [turbofan] Introduce a dedicated CheckBounds operator.

test/mjsunit/compiler/regress-5100.js

-// Copyright 2016 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --allow-natives-syntax
-
-var a = [0, 1];
-a["true"] = "true";
-a["false"] = "false";
-a["null"] = "null";
-a["undefined"] = "undefined";
-
-// Ensure we don't accidentially truncate true when used to index arrays.
-(function() {
-  function f(x) { return a[x]; }
-
-  assertEquals(0, f(0));
-  assertEquals(0, f(0));
-  %OptimizeFunctionOnNextCall(f);
-  assertEquals("true", f(true));
-})();
-
-// Ensure we don't accidentially truncate false when used to index arrays.
-(function() {
-  function f( x) { return a[x]; }
-
-  assertEquals(0, f(0));
-  assertEquals(0, f(0));
-  %OptimizeFunctionOnNextCall(f);
-  assertEquals("false", f(false));
-})();
-
-// Ensure we don't accidentially truncate null when used to index arrays.
-(function() {
-  function f( x) { return a[x]; }
-
-  assertEquals(0, f(0));
-  assertEquals(0, f(0));
-  %OptimizeFunctionOnNextCall(f);
-  assertEquals("null", f(null));
-})();
-
-// Ensure we don't accidentially truncate undefined when used to index arrays.
-(function() {
-  function f( x) { return a[x]; }
-
-  assertEquals(0, f(0));
-  assertEquals(0, f(0));
-  %OptimizeFunctionOnNextCall(f);
-  assertEquals("undefined", f(undefined));
-})();