A64: Synchronize with r18444.

test/mjsunit/regress/regress-param-local-type.js

 // Copyright 2013 the V8 project authors. All rights reserved.
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 // 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.
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 //
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 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // 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
 
-function f() {
-  var o = {};
-  o["<abc>"] = 123;
+// Test that we do not confuse the first local and the first parameter
+// when gathering type information.
+
+function f(a) {  // First parameter is tagged.
+  var s = '';    // First local has string type.
+  var n = 0;
+  var i = 1;
+  n = i + a;
 }
 
-f();
-f();
-f();
+f(1);
+f(1);
 %OptimizeFunctionOnNextCall(f);
-f();
+f(1);
 assertOptimized(f);
+
+
+function g() {  // 0th parameter (receiver) is tagged.
+  var s = '';   // First local has string type.
+  var n = 0;
+  var i = 1;
+  n = i + this;
+}
+
+g.call(1);
+g.call(1);
+%OptimizeFunctionOnNextCall(g);
+g.call(1);
+assertOptimized(g);