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

src/compiler/representation-change.h

 // 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.
 
 #ifndef V8_COMPILER_REPRESENTATION_CHANGE_H_
 #define V8_COMPILER_REPRESENTATION_CHANGE_H_
 
 #include "src/compiler/js-graph.h"
 #include "src/compiler/simplified-operator.h"
 
@@ skipping 121 matching lines @@
 
   // Possibly deoptimizing conversions.
   static UseInfo CheckedSigned32AsWord32() {
     return UseInfo(MachineRepresentation::kWord32, Truncation::Any(),
                    TypeCheckKind::kSigned32);
   }
   static UseInfo CheckedNumberOrOddballAsFloat64() {
     return UseInfo(MachineRepresentation::kFloat64, Truncation::Any(),
                    TypeCheckKind::kNumberOrOddball);
   }
+  static UseInfo CheckedNumberOrOddballAsWord32() {
+    return UseInfo(MachineRepresentation::kWord32, Truncation::Word32(),
+                   TypeCheckKind::kNumberOrOddball);
+  }
 
   // Undetermined representation.
   static UseInfo Any() {
     return UseInfo(MachineRepresentation::kNone, Truncation::Any());
   }
   static UseInfo AnyTruncatingToBool() {
     return UseInfo(MachineRepresentation::kNone, Truncation::Bool());
   }
 
   // Value not used.
@@ skipping 91 matching lines @@
   Factory* factory() const { return isolate()->factory(); }
   SimplifiedOperatorBuilder* simplified() { return jsgraph()->simplified(); }
   MachineOperatorBuilder* machine() { return jsgraph()->machine(); }
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_REPRESENTATION_CHANGE_H_