[PIR] Support select complex kernel for real_grad

paddle/fluid/pir/dialect/op_generator/op_gen.py

@@ -1435,11 +1435,31 @@ def OpGenerator(
                         'data_type' in op_kernel_map
                         and op_kernel_map['data_type']
                     ):
-                        kernel_key_dtype = '", "'.join(
-                            op_kernel_map['data_type']['candidates']
-                        )
+                        for idx in range(
+                            len(op_kernel_map['data_type']['candidates'])
+                        ):
+                            if (
+                                'to_complex_flag' in op_kernel_map['data_type']
+                                and op_kernel_map['data_type'][
+                                    'to_complex_flag'
+                                ][idx]
+                            ):
+                                kernel_key_dtype += (
+                                    'complex:'
+                                    + op_kernel_map['data_type']['candidates'][
+                                        idx
+                                    ]
+                                    + '", "'
+                                )
+                            else:
+                                kernel_key_dtype += (
+                                    op_kernel_map['data_type']['candidates'][
+                                        idx
+                                    ]
+                                    + '", "'
+                                )
                         if kernel_key_dtype != "":
-                            kernel_key_dtype = '"' + kernel_key_dtype + '"'
+                            kernel_key_dtype = '"' + kernel_key_dtype[:-3]
                     if 'backend' in op_kernel_map and op_kernel_map['backend']:
                         kernel_key_backend = '", "'.join(
                             op_kernel_map['backend']['candidates']

paddle/fluid/pir/transforms/pd_op_to_kernel_pass.cc

@@ -34,6 +34,7 @@
 #include "paddle/phi/api/lib/data_transform.h"
 #include "paddle/phi/api/lib/kernel_dispatch.h"
 #include "paddle/phi/common/place.h"
+#include "paddle/phi/common/type_traits.h"
 #include "paddle/phi/core/compat/convert_utils.h"
 #include "paddle/phi/core/kernel_factory.h"
 #include "paddle/pir/core/builtin_op.h"
@@ -343,6 +344,12 @@ phi::DataType GetKernelDataTypeByYamlInfo(
     auto slot_name = data_type_info[i];
     auto& input_map = op_info_parser->InputName2Id();
 
+    bool is_complex_tag = false;
+    if (slot_name.find("complex:") == 0) {
+      slot_name = slot_name.substr(8);
+      is_complex_tag = true;
+    }
+
     auto find_it = Str2PhiDataType.find(slot_name);
     if (find_it != Str2PhiDataType.end()) {
       kernel_data_type = find_it->second;
@@ -383,6 +390,9 @@ phi::DataType GetKernelDataTypeByYamlInfo(
         PADDLE_THROW(phi::errors::Unimplemented(
             "Only support DenseTensorType, SelectedRows, VectorType"));
       }
+      if (is_complex_tag) {
+        kernel_data_type = phi::dtype::ToComplex(kernel_data_type);
+      }
 
     } else {
       PADDLE_ENFORCE_EQ(attr_map.count(slot_name),

test/legacy_test/test_real_imag_op.py

@@ -66,6 +66,7 @@ def test_check_grad(self):
             'Out',
             user_defined_grads=[self.grad_x],
             user_defined_grad_outputs=[self.grad_out],
+            check_pir=True,
         )