add output defs for histogram kernel (#51317)

paddle/fluid/framework/new_executor/interpreter/interpreter_util.cc

@@ -65,7 +65,6 @@ static std::set<std::string> OpsNeedSetOutputDtypeWhenRegisterPhiKernel = {
     "generate_proposals",
     "graph_sample_neighbors",
     "group_norm",
-    "histogram",
     "instance_norm",
     "lamb",
     "layer_norm",

paddle/phi/infermeta/unary.cc

@@ -1626,6 +1626,7 @@ void HistogramInferMeta(
 
   out->set_dims({bins});
   out->share_lod(input);
+  out->set_dtype(DataType::INT64);
 }
 
 void IdentityLossInferMeta(const MetaTensor& x,

paddle/phi/kernels/cpu/histogram_kernel.cc

@@ -85,4 +85,6 @@ PD_REGISTER_KERNEL(histogram,
                    float,
                    double,
                    int,
-                   int64_t) {}
+                   int64_t) {
+  kernel->OutputAt(0).SetDataType(paddle::DataType::INT64);
+}

paddle/phi/kernels/gpu/histogram_kernel.cu

@@ -154,4 +154,6 @@ PD_REGISTER_KERNEL(histogram,
                    float,
                    double,
                    int,
-                   int64_t) {}
+                   int64_t) {
+  kernel->OutputAt(0).SetDataType(paddle::DataType::INT64);
+}