[turbofan] Adds handling of number or oddball type feedback to SpeculativeNumberShiftLeft.

test/mjsunit/compiler/turbo-number-feedback.js

Index: test/mjsunit/compiler/turbo-number-feedback.js
diff --git a/test/mjsunit/compiler/turbo-number-feedback.js b/test/mjsunit/compiler/turbo-number-feedback.js
index 896d1542424bf9cb727306070fc2fffd3a08983a..1462c385e8547a67c8c46fc9e64b2415cd1fc294 100644
--- a/test/mjsunit/compiler/turbo-number-feedback.js
+++ b/test/mjsunit/compiler/turbo-number-feedback.js
@@ -67,3 +67,14 @@
   %OptimizeFunctionOnNextCall(f4);
   assertEquals(64, f4(4, 4));
 })();
+
+(function ShiftLeftNumbers() {
+  function f5(a, b) {
+    return a << b;
+  }
+
+  assertEquals(24, f5(3.3, 3.4));
+  assertEquals(40, f5(5.1, 3.9));
+  %OptimizeFunctionOnNextCall(f5);
+  assertEquals(64, f5(4.9, 4.1));
+})();