Propogate const for contiguous

src/eliminate_contiguous.cpp

@@ -4,6 +4,8 @@
 #include <migraphx/iterator_for.hpp>
 #include <migraphx/ranges.hpp>
 #include <migraphx/stringutils.hpp>
+#include <migraphx/op/contiguous.hpp>
+#include <migraphx/op/identity.hpp>
 #include <utility>
 
 namespace migraphx {
@@ -82,6 +84,11 @@ void eliminate_contiguous::apply(program& p) const
                 {
                     instruction::replace_argument(ins, arg, prev);
                 }
+                else if (prev->can_eval())
+                {
+                    auto c = p.insert_instruction(arg, op::contiguous{}, prev);
+                    p.replace_instruction(arg, op::identity{}, c);
+                }
             }
         }
     }

src/targets/gpu/target.cpp

@@ -62,6 +62,8 @@ std::vector<pass> target::get_passes(migraphx::context& gctx) const
         dead_code_elimination{},
         eliminate_contiguous{},
         dead_code_elimination{},
+        propagate_constant{},
+        dead_code_elimination{},
         adjust_allocation{},
         dead_code_elimination{},
         fuse_ops{&ctx},