Revert of Collect type feedback on result of Math.[round|ceil|floor]

test/mjsunit/math-floor-minus-zero.js

-// Copyright 2015 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// Flags: --allow-natives-syntax --noalways-opt
-
-// Test that a -0 result doesn't cause deopt loops
-function noDeoptLoop(x) {
-  return Math.floor(x);
-}
-assertEquals(0, noDeoptLoop(0.4));
-assertEquals(0, noDeoptLoop(0.4));
-assertEquals(0, noDeoptLoop(0.4));
-%OptimizeFunctionOnNextCall(noDeoptLoop);
-assertEquals(0, noDeoptLoop(0.4));
-assertEquals(0, noDeoptLoop(0.4));
-assertEquals(-Infinity, 1/noDeoptLoop(-0.0));
-assertUnoptimized(noDeoptLoop);
-assertEquals(-1, 1/noDeoptLoop(-1.0));
-assertEquals(-1, 1/noDeoptLoop(-0.9));
-assertEquals(-1, 1/noDeoptLoop(-0.4));
-assertEquals(-1, 1/noDeoptLoop(-0.5));
-assertEquals(-Infinity, 1/noDeoptLoop(-0.0));
-%OptimizeFunctionOnNextCall(noDeoptLoop);
-assertEquals(-Infinity, 1/noDeoptLoop(-0.0));
-assertOptimized(noDeoptLoop);
-%ClearFunctionTypeFeedback(noDeoptLoop);
-%DeoptimizeFunction(noDeoptLoop);
-
-// Test that floor that goes megamorphic is handled correctly.
-function notFloor(x) {
-  return -x;
-}
-function testMega(f, x) {
-  return f(x);
-}
-assertEquals(7, testMega(Math.floor, 7.4));
-assertEquals(7, testMega(Math.floor, 7.4));
-assertEquals(7, testMega(Math.floor, 7.4));
-assertEquals(-7.4, testMega(notFloor, 7.4));
-
-// Make sure that we can learn about floor specialization from Cranskhaft, which
-// doesn't insert soft deopts for CallICs.
-function crankFloorLearn(x) {
-  return Math.floor(x);
-}
-%OptimizeFunctionOnNextCall(crankFloorLearn);
-assertEquals(12, crankFloorLearn(12.3));
-assertOptimized(crankFloorLearn);
-assertEquals(-Infinity, 1/crankFloorLearn(-0.0));
-assertOptimized(crankFloorLearn);
-assertEquals(-Infinity, 1/crankFloorLearn(-0.0));