[turbofan] Do strength reduction for ObjectIsSmi based on inputs.

src/compiler/simplified-operator-reducer.h

Index: src/compiler/simplified-operator-reducer.h
diff --git a/src/compiler/simplified-operator-reducer.h b/src/compiler/simplified-operator-reducer.h
index 70750a854c79f0ddaded80cd92615514213b7c47..f4412b923923e688fe87c513091a9f138cbd1ef0 100644
--- a/src/compiler/simplified-operator-reducer.h
+++ b/src/compiler/simplified-operator-reducer.h
@@ -33,6 +33,7 @@ class SimplifiedOperatorReducer final : public Reducer {
   Reduction ReduceTypeGuard(Node* node);
 
   Reduction Change(Node* node, const Operator* op, Node* a);
+  Reduction ReplaceBoolean(bool value);
   Reduction ReplaceFloat64(double value);
   Reduction ReplaceInt32(int32_t value);
   Reduction ReplaceUint32(uint32_t value) {