Merge V8 5.2.361.47  DO NOT MERGE

https://chromium.googlesource.com/v8/v8/+/5.2.361.47

FPIIM-449

Change-Id: Ibec421b85a9b88cb3a432ada642e469fe7e78346
(cherry picked from commit bcf72ee8e3b26f1d0726869c7ddb3921c68b09a8)
diff --git a/src/compiler/representation-change.h b/src/compiler/representation-change.h
index 24e28f3..839335d 100644
--- a/src/compiler/representation-change.h
+++ b/src/compiler/representation-change.h
@@ -31,6 +31,9 @@
   bool TruncatesToWord32() const {
     return LessGeneral(kind_, TruncationKind::kWord32);
   }
+  bool TruncatesToFloat64() const {
+    return LessGeneral(kind_, TruncationKind::kFloat64);
+  }
   bool TruncatesNaNToZero() {
     return LessGeneral(kind_, TruncationKind::kWord32) ||
            LessGeneral(kind_, TruncationKind::kBool);
@@ -130,6 +133,9 @@
                   Type* output_type, MachineRepresentation use);
   Node* MakeTruncatedInt32Constant(double value);
   Node* InsertChangeFloat32ToFloat64(Node* node);
+  Node* InsertChangeFloat64ToInt32(Node* node);
+  Node* InsertChangeFloat64ToUint32(Node* node);
+  Node* InsertChangeTaggedSignedToInt32(Node* node);
   Node* InsertChangeTaggedToFloat64(Node* node);
 
   JSGraph* jsgraph() const { return jsgraph_; }