Implement experimental exponentiation operator

test/unittests/compiler/typer-unittest.cc

 // Copyright 2015 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.
 
 #include <functional>
 
 #include "src/codegen.h"
 #include "src/compiler/js-operator.h"
 #include "src/compiler/node-properties.h"
 #include "test/cctest/types-fuzz.h"
@@ skipping 231 matching lines @@
 TEST_F(TyperTest, TypeJSDivide) {
   TestBinaryArithOp(javascript_.Divide(), std::divides<double>());
 }
 
 
 TEST_F(TyperTest, TypeJSModulus) {
   TestBinaryArithOp(javascript_.Modulus(), modulo);
 }
 
 
+TEST_F(TyperTest, TypeJSExponentiate) {
+  TestBinaryArithOp(javascript_.Exponentiate(), power_helper);
+}
+
+
 TEST_F(TyperTest, TypeJSBitwiseOr) {
   TestBinaryBitOp(javascript_.BitwiseOr(), bit_or);
 }
 
 
 TEST_F(TyperTest, TypeJSBitwiseAnd) {
   TestBinaryBitOp(javascript_.BitwiseAnd(), bit_and);
 }
 
 
@@ skipping 95 matching lines @@
 
 
 TEST_F(TyperTest, TypeRegressInt32Constant) {
   int values[] = {-5, 10};
   for (auto i : values) {
     Node* c = graph()->NewNode(common()->Int32Constant(i));
     Type* type = NodeProperties::GetBounds(c).upper;
     EXPECT_TRUE(type->Is(NewRange(i, i)));
   }
 }