add an attribute input_standard shape for the reshape operator

src/auto_contiguous.cpp

+#include <algorithm>
 #include <migraphx/auto_contiguous.hpp>
 #include <migraphx/program.hpp>
 #include <migraphx/instruction.hpp>
@@ -10,13 +11,22 @@ inline namespace MIGRAPHX_INLINE_NS {
 
 void auto_contiguous::apply(module& p) const
 {
-    for(auto ins : iterator_for(p))
+    std::string key = "standard_input_shape";
+    for(auto ins : reverse_iterator_for(p))
     {
-        shape s = ins->get_shape();
-        if(not s.standard() and s.elements() != 0)
+        auto&& attr = ins->get_operator().attributes();
+        if((attr.contains(key) and attr.at(key).to<bool>()))
         {
-            auto c = p.insert_instruction(std::next(ins), make_op("contiguous"), ins);
-            p.replace_instruction(ins, c);
+            auto args = ins->inputs();
+            auto new_args = args;
+            std::transform(args.begin(), args.end(), new_args.begin(), [&](auto in) {
+                return p.replace_instruction(ins, make_op("contiguous"), in);
+            });
+
+            if(new_args != args)
+            {
+                p.replace_instruction(ins, ins->get_operator(), new_args);
+            }
         }
     }
 }

src/include/migraphx/op/reshape.hpp

@@ -9,6 +9,7 @@
 #include <migraphx/shape_for_each.hpp>
 #include <migraphx/config.hpp>
 #include <migraphx/lifetime.hpp>
+#include <migraphx/value.hpp>
 #include <cmath>
 #include <utility>
 
@@ -26,6 +27,11 @@ struct reshape
         return pack(f(self.dims, "dims"));
     }
 
+    value attributes() const
+    {
+        return {{"standard_input_shape", true}};
+    }
+
     std::string name() const { return "reshape"; }
     shape compute_shape(std::vector<shape> inputs) const
     {

src/onnx/onnx_parser.cpp

@@ -70,7 +70,7 @@ static literal from_repeated(shape::type_t t, const T& r)
 
 instruction_ref onnx_parser::node_info::make_contiguous(instruction_ref ins) const
 {
-    if(ins->name() == "contiguous")
+    if(ins->get_shape().standard())
     {
         return ins;
     }

src/targets/gpu/target.cpp

@@ -93,10 +93,10 @@ std::vector<pass> target::get_passes(migraphx::context& gctx, const compile_opti
         dead_code_elimination{},
         eliminate_common_subexpression{},
         dead_code_elimination{},
+        auto_contiguous{},
         simplify_algebra{},
         simplify_reshapes{},
         simplify_algebra{},
-        auto_contiguous{},
         simplify_reshapes{},
         propagate_constant{},
         dead_code_elimination{},