[turbofan] Lower asm.js truncations to JSToNumber.

src/compiler/js-typed-lowering.h

Index: src/compiler/js-typed-lowering.h
diff --git a/src/compiler/js-typed-lowering.h b/src/compiler/js-typed-lowering.h
index deaf1fa878d894175a9f8406b13218bb57511855..1b7529f237ff89d8078e056a165986752d0c6f5c 100644
--- a/src/compiler/js-typed-lowering.h
+++ b/src/compiler/js-typed-lowering.h
@@ -18,8 +18,7 @@ namespace compiler {
 // Lowers JS-level operators to simplified operators based on types.
 class JSTypedLowering FINAL : public Reducer {
  public:
-  explicit JSTypedLowering(JSGraph* jsgraph)
-      : jsgraph_(jsgraph), simplified_(jsgraph->zone()) {}
+  explicit JSTypedLowering(JSGraph* jsgraph);
   virtual ~JSTypedLowering();
 
   virtual Reduction Reduce(Node* node) OVERRIDE;
@@ -34,6 +33,8 @@ class JSTypedLowering FINAL : public Reducer {
   Reduction ReplaceEagerly(Node* old, Node* node);
   Reduction ReplaceWith(Node* node) { return Reducer::Replace(node); }
   Reduction ReduceJSAdd(Node* node);
+  Reduction ReduceJSBitwiseOr(Node* node);
+  Reduction ReduceJSMultiply(Node* node);
   Reduction ReduceJSComparison(Node* node);
   Reduction ReduceJSLoadProperty(Node* node);
   Reduction ReduceJSStoreProperty(Node* node);
@@ -55,6 +56,8 @@ class JSTypedLowering FINAL : public Reducer {
 
   JSGraph* jsgraph_;
   SimplifiedOperatorBuilder simplified_;
+  Type* zero_range_;
+  Type* one_range_;
 };
 
 }  // namespace compiler