[turbofan] Implemented the TruncateFloat32ToUint64 TurboFan operator.

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 d48c24d616f16e9a9b984d9e1eafe05d992b6305..250534956b66b22f6f51df9d9194445eb1ef2e7f 100644
--- a/src/compiler/raw-machine-assembler.h
+++ b/src/compiler/raw-machine-assembler.h
@@ -444,6 +444,9 @@ class RawMachineAssembler {
   Node* TruncateFloat64ToInt64(Node* a) {
     return AddNode(machine()->TruncateFloat64ToInt64(), a);
   }
+  Node* TruncateFloat32ToUint64(Node* a) {
+    return AddNode(machine()->TruncateFloat32ToUint64(), a);
+  }
   Node* TruncateFloat64ToUint64(Node* a) {
     return AddNode(machine()->TruncateFloat64ToUint64(), a);
   }