[turbofan] Fix deoptimization of uint8, uint16 inputs.

test/mjsunit/compiler/regress-uint8-deopt.js

Index: test/mjsunit/compiler/regress-uint8-deopt.js
diff --git a/test/mjsunit/compiler/regress-uint8-deopt.js b/test/mjsunit/compiler/regress-uint8-deopt.js
new file mode 100644
index 0000000000000000000000000000000000000000..ba2823fa358e26a33fe9eac49a4b8a23879d6c04
--- /dev/null
+++ b/test/mjsunit/compiler/regress-uint8-deopt.js
@@ -0,0 +1,17 @@
+// Copyright 2014 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: --turbo-asm --turbo-deoptimization --allow-natives-syntax
+
+function Module(heap) {
+  "use asm";
+  var a = new Uint8Array(heap);
+  function f() {
+    var x = a[0] | 0;
+    %DeoptimizeFunction(f);
+    return x;
+  }
+  return f;
+}
+assertEquals(0, Module(new ArrayBuffer(1))());