fixed a bug and added one more tests.

src/targets/cpu/target.cpp

@@ -3,6 +3,7 @@
 #include <migraphx/cpu/lowering.hpp>
 #include <migraphx/auto_contiguous.hpp>
 #include <migraphx/rewrite_rnn.hpp>
+#include <migraphx/dead_code_elimination.hpp>
 
 namespace migraphx {
 inline namespace MIGRAPHX_INLINE_NS {
@@ -12,7 +13,13 @@ std::string target::name() const { return "cpu"; }
 
 std::vector<pass> target::get_passes(migraphx::context&) const
 {
-    return {auto_contiguous{}, rewrite_rnn{}, lowering{}};
+    return {
+        auto_contiguous{}, 
+        rewrite_rnn{},
+        dead_code_elimination{},
+        lowering{},
+        dead_code_elimination{}
+        };
 }
 
 } // namespace cpu

src/targets/gpu/target.cpp

@@ -34,8 +34,8 @@ std::vector<pass> target::get_passes(migraphx::context& gctx) const
         dead_code_elimination{},
         rewrite_rnn{},
         dead_code_elimination{},
-        common_subexpression_elimination{},
-        dead_code_elimination{},
+        //common_subexpression_elimination{},
+        //dead_code_elimination{},
         simplify_algebra{},
         dead_code_elimination{},
         constant_propagate{},

test/gpu/miopen.cpp

@@ -1542,5 +1542,5 @@ int main()
     verify_program<test_rnn_5args>();
     verify_program<test_rnn_bidirectional>();
     verify_program<test_rnn_bidirectional10>();
-    // verify_program<test_rnn_bi_3args>();
+    verify_program<test_rnn_bi_3args>();
 }