[turbofan] Change TruncateFloat32ToUint64 to TryTruncateFloat32ToUint64.

test/cctest/compiler/test-representation-change.cc

Index: test/cctest/compiler/test-representation-change.cc
diff --git a/test/cctest/compiler/test-representation-change.cc b/test/cctest/compiler/test-representation-change.cc
index fc319df79b510a26946a66230362efbf0242fb86..7755c13f3dadb8e19dbb292871188d04514706c6 100644
--- a/test/cctest/compiler/test-representation-change.cc
+++ b/test/cctest/compiler/test-representation-change.cc
@@ -61,7 +61,7 @@ class RepresentationChangerTester : public HandleAndZoneScope,
   void CheckFloat32Constant(Node* n, float expected) {
     CHECK_EQ(IrOpcode::kFloat32Constant, n->opcode());
     float fval = OpParameter<float>(n->op());
-    CHECK_EQ(expected, fval);
+    CheckDoubleEq(expected, fval);
   }
 
   void CheckHeapConstant(Node* n, HeapObject* expected) {