add gru op_register_version; test=op_version; (#29931)

* add gru op_register_version; test=op_version;

* Update fc,mul version;test=op_version;

paddle/fluid/framework/ir/fc_gru_fuse_pass.cc

@@ -203,11 +203,11 @@ REGISTER_PASS_CAPABILITY(mul_gru_fuse_pass)
         paddle::framework::compatible::OpVersionComparatorCombination()
             .EQ("mul", 0)
             .EQ("gru", 0)
-            .EQ("fusion_gru", 0));
+            .LE("fusion_gru", 1));
 REGISTER_PASS_CAPABILITY(fc_gru_fuse_pass)
     .AddCombination(
         paddle::framework::compatible::OpVersionComparatorCombination()
             .EQ("mul", 0)
             .EQ("elementwise_add", 0)
             .EQ("gru", 0)
-            .EQ("fusion_gru", 0));
+            .LE("fusion_gru", 1));

paddle/fluid/operators/fused/fusion_gru_op.cc

@@ -16,6 +16,7 @@ limitations under the License. */
 #include <cstring>  // for memcpy
 #include <string>
 #include <vector>
+#include "paddle/fluid/framework/op_version_registry.h"
 #include "paddle/fluid/operators/jit/kernels.h"
 #include "paddle/fluid/operators/math/blas.h"
 #include "paddle/fluid/operators/math/fc.h"
@@ -479,3 +480,13 @@ REGISTER_OPERATOR(fusion_gru, ops::FusionGRUOp, ops::FusionGRUOpMaker);
 
 REGISTER_OP_CPU_KERNEL(fusion_gru, ops::FusionGRUKernel<float>,
                        ops::FusionGRUKernel<double>);
+
+/* ==========================  register checkpoint ===========================*/
+REGISTER_OP_VERSION(fusion_gru)
+    .AddCheckpoint(
+        R"ROC(Upgrade fusion_gru add a new attribute [Scale_weights])ROC",
+        paddle::framework::compatible::OpVersionDesc().NewAttr(
+            "Scale_weights",
+            "The added attribute 'Scale_weights' is not yet "
+            "registered.",
+            {1.0f}));