Addition of bf16 type support for Compare OP (#46413)

* first commit

* clarify the quotes

* change code style format

* support bfloat16

paddle/phi/kernels/kps/compare_kernel.cu

@@ -114,7 +114,8 @@ PD_REGISTER_KERNEL(less_than,
                    int64_t,
                    float,
                    double,
-                   phi::dtype::float16) {}
+                   phi::dtype::float16,
+                   phi::dtype::bfloat16) {}
 PD_REGISTER_KERNEL(less_equal,
                    KPS,
                    ALL_LAYOUT,
@@ -125,7 +126,8 @@ PD_REGISTER_KERNEL(less_equal,
                    int64_t,
                    float,
                    double,
-                   phi::dtype::float16) {}
+                   phi::dtype::float16,
+                   phi::dtype::bfloat16) {}
 PD_REGISTER_KERNEL(greater_than,
                    KPS,
                    ALL_LAYOUT,
@@ -136,7 +138,8 @@ PD_REGISTER_KERNEL(greater_than,
                    int64_t,
                    float,
                    double,
-                   phi::dtype::float16) {}
+                   phi::dtype::float16,
+                   phi::dtype::bfloat16) {}
 PD_REGISTER_KERNEL(greater_equal,
                    KPS,
                    ALL_LAYOUT,
@@ -147,7 +150,8 @@ PD_REGISTER_KERNEL(greater_equal,
                    int64_t,
                    float,
                    double,
-                   phi::dtype::float16) {}
+                   phi::dtype::float16,
+                   phi::dtype::bfloat16) {}
 PD_REGISTER_KERNEL(equal,
                    KPS,
                    ALL_LAYOUT,
@@ -158,7 +162,8 @@ PD_REGISTER_KERNEL(equal,
                    int64_t,
                    float,
                    double,
-                   phi::dtype::float16) {}
+                   phi::dtype::float16,
+                   phi::dtype::bfloat16) {}
 PD_REGISTER_KERNEL(not_equal,
                    KPS,
                    ALL_LAYOUT,
@@ -169,7 +174,8 @@ PD_REGISTER_KERNEL(not_equal,
                    int64_t,
                    float,
                    double,
-                   phi::dtype::float16) {}
+                   phi::dtype::float16,
+                   phi::dtype::bfloat16) {}
 
 PD_REGISTER_KERNEL(equal_all,
                    KPS,