Allow negative literals in asm->wasm non-conversion operations.

test/mjsunit/wasm/asm-wasm.js

 // 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.
 
 // Flags: --expose-wasm
 
 function EmptyTest() {
   "use asm";
   function caller() {
     empty();
@@ skipping 1454 matching lines @@
     function func() {
       var a = 1;
       return ((a + a) * 4) | 0;
     }
     return {func: func};
   }
   assertThrows(function() {
     _WASMEXP_.instantiateModuleFromAsm(Module.toString());
   });
 })();
+
+
+(function TestAndNegative() {
+  function Module() {
+    "use asm";
+    function func() {
+      var x = 1;
+      var y = 2;
+      var z = 0;
+      z = x + y & -1;
+      return z | 0;
+    }
+    return {func: func};
+  }
+
+  var m = _WASMEXP_.instantiateModuleFromAsm(Module.toString());
+  assertEquals(3, m.func());
+})();
+
+
+(function TestNegativeDouble() {
+  function Module() {
+    "use asm";
+    function func() {
+      var x = -(34359738368.25);
+      var y = -2.5;
+      return +(x + y);
+    }
+    return {func: func};
+  }
+
+  var m = _WASMEXP_.instantiateModuleFromAsm(Module.toString());
+  assertEquals(-34359738370.75, m.func());
+})();
+
+
+(function TestBadAndDouble() {
+  function Module() {
+    "use asm";
+    function func() {
+      var x = 1.0;
+      var y = 2.0;
+      return (x & y) | 0;
+    }
+    return {func: func};
+  }
+
+  assertThrows(function() {
+    _WASMEXP_.instantiateModuleFromAsm(Module.toString());
+  });
+})();