[turbofan] Renamed the ChangeFloat64ToInt64 operator to TruncateFloat64ToInt64.

src/compiler/raw-machine-assembler.h

Index: src/compiler/raw-machine-assembler.h
diff --git a/src/compiler/raw-machine-assembler.h b/src/compiler/raw-machine-assembler.h
index 57c5662f814b9cd60d8e346ba8809ab0bd744704..915c8a93331fdc1ec1ab1ec68d49eb2a78dcfa8d 100644
--- a/src/compiler/raw-machine-assembler.h
+++ b/src/compiler/raw-machine-assembler.h
@@ -443,8 +443,8 @@ class RawMachineAssembler {
   Node* ChangeFloat64ToUint32(Node* a) {
     return AddNode(machine()->ChangeFloat64ToUint32(), a);
   }
-  Node* ChangeFloat64ToInt64(Node* a) {
-    return AddNode(machine()->ChangeFloat64ToInt64(), a);
+  Node* TruncateFloat64ToInt64(Node* a) {
+    return AddNode(machine()->TruncateFloat64ToInt64(), a);
   }
   Node* TruncateFloat64ToUint64(Node* a) {
     return AddNode(machine()->TruncateFloat64ToUint64(), a);