add a gpu implementation for the get_tuple_elem op

src/include/migraphx/op/get_tuple_elem.hpp

@@ -46,7 +46,7 @@ struct get_tuple_elem
         return vec_args.at(index);
     }
 
-    std::ptrdiff_t output_alias(const std::vector<shape>&) const { return 0; }
+    // std::ptrdiff_t output_alias(const std::vector<shape>&) const { return 0; }
 };
 
 } // namespace op

src/targets/gpu/CMakeLists.txt

@@ -143,6 +143,7 @@ add_library(migraphx_gpu
     fuse_ops.cpp
     gather.cpp
     gemm_impl.cpp
+    get_tuple_elem.cpp
     hip.cpp
     int8_conv_pack.cpp
     int8_gemm_pack.cpp
@@ -200,6 +201,7 @@ register_migraphx_gpu_ops(hip_
     exp
     floor
     gather
+    get_tuple_elem
     greater
     less
     log

src/targets/gpu/lowering.cpp

@@ -27,6 +27,7 @@
 #include <migraphx/gpu/elu.hpp>
 #include <migraphx/gpu/equal.hpp>
 #include <migraphx/gpu/gemm.hpp>
+#include <migraphx/gpu/get_tuple_elem.hpp>
 #include <migraphx/gpu/greater.hpp>
 #include <migraphx/gpu/int8_conv_pack.hpp>
 #include <migraphx/gpu/leaky_relu.hpp>
@@ -162,6 +163,7 @@ struct miopen_apply
         add_extend_op("convert");
         add_extend_op("elu");
         add_extend_op("gather");
+        add_extend_op("get_tuple_elem");
         add_extend_op("leaky_relu");
         add_extend_op("logsoftmax");
         add_extend_op("lrn");