fix review comments

src/auto_contiguous.cpp

@@ -20,7 +20,7 @@ void auto_contiguous::apply(module& p) const
             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);
+                return p.insert_instruction(ins, make_op("contiguous"), in);
             });
 
             if(new_args != args)
@@ -29,6 +29,18 @@ void auto_contiguous::apply(module& p) const
             }
         }
     }
+
+    auto last = std::prev(p.end());
+    for(auto ins : iterator_for(p))
+    {
+        if (ins->outputs().empty() and ins != last) continue;
+        shape s = ins->get_shape();
+        if(not s.standard() and s.elements() != 0)
+        {
+            auto c = p.insert_instruction(std::next(ins), make_op("contiguous"), ins);
+            p.replace_instruction(ins, c);
+        }
+    }
 }
 
 } // namespace MIGRAPHX_INLINE_NS

src/include/migraphx/op/reduce_op.hpp

@@ -66,7 +66,7 @@ struct reduce_op : op_name<Derived>
     {
         value normalize;
         normalize["axes"] = value::array{normalize_attribute::include_min};
-        return {{"normalize_axes", normalize}};
+        return {{"normalize_axes", normalize}, {"standard_input_shape", true}};
     }
 
     std::vector<int64_t> tune_axes(std::size_t n_dim) const

src/simplify_reshapes.cpp

@@ -26,6 +26,7 @@ const auto& reshaper_names()
     static const std::unordered_set<std::string> names = {
         "flatten",
         "reshape",
+        "contiguous",
         "squeeze",
         "unsqueeze"
     };

test/onnx/onnx_test.cpp

@@ -1264,10 +1264,8 @@ TEST_CASE(flatten_test)
     migraphx::program p;
     auto* mm = p.get_main_module();
     auto l0  = mm->add_parameter("0", migraphx::shape{migraphx::shape::float_type, {2, 3, 4, 5}});
-    auto cl0 = mm->add_instruction(migraphx::make_op("contiguous"), l0);
-    mm->add_instruction(migraphx::make_op("flatten", {{"axis", 2}}), cl0);
-    auto cl1 = mm->add_instruction(migraphx::make_op("contiguous"), l0);
-    mm->add_instruction(migraphx::make_op("flatten", {{"axis", 1}}), cl1);
+    mm->add_instruction(migraphx::make_op("flatten", {{"axis", 2}}), l0);
+    mm->add_instruction(migraphx::make_op("flatten", {{"axis", 1}}), l0);
     auto prog = optimize_onnx("flatten_test.onnx");
 
     EXPECT(p == prog);
@@ -1308,9 +1306,7 @@ TEST_CASE(gather_test)
     auto l0 = mm->add_parameter("data", migraphx::shape{migraphx::shape::float_type, {3, 4, 5, 6}});
     auto l1 = mm->add_parameter("indices", migraphx::shape{migraphx::shape::int32_type, {2, 3}});
     int axis = 1;
-    auto cl0 = mm->add_instruction(migraphx::make_op("contiguous"), l0);
-    auto cl1 = mm->add_instruction(migraphx::make_op("contiguous"), l1);
-    mm->add_instruction(migraphx::make_op("gather", {{"axis", axis}}), cl0, cl1);
+    mm->add_instruction(migraphx::make_op("gather", {{"axis", axis}}), l0, l1);
     auto prog = optimize_onnx("gather_test.onnx");
 
     EXPECT(p == prog);
@@ -1330,13 +1326,11 @@ TEST_CASE(gather_elements_axis0_test)
     auto l_ind_axis_indices =
         mm->add_literal(migraphx::literal{ind_s, ind_axis_indices.begin(), ind_axis_indices.end()});
     auto l_stride = mm->add_literal(migraphx::literal{{migraphx::shape::int32_type, {1}}, {4}});
-    auto cdata    = mm->add_instruction(migraphx::make_op("contiguous"), data);
-    auto cindices = mm->add_instruction(migraphx::make_op("contiguous"), indices);
 
-    auto rsp_data    = mm->add_instruction(migraphx::make_op("reshape", {{"dims", {12}}}), cdata);
+    auto rsp_data    = mm->add_instruction(migraphx::make_op("reshape", {{"dims", {12}}}), data);
     auto lbst_stride = mm->add_instruction(
         migraphx::make_op("multibroadcast", {{"out_lens", ind_s.lens()}}), l_stride);
-    auto axis_delta = mm->add_instruction(migraphx::make_op("sub"), cindices, l_ind_axis_indices);
+    auto axis_delta = mm->add_instruction(migraphx::make_op("sub"), indices, l_ind_axis_indices);
     auto mul_delta  = mm->add_instruction(migraphx::make_op("mul"), axis_delta, lbst_stride);
     auto ind        = mm->add_instruction(migraphx::make_op("add"), l_data_indices, mul_delta);
     auto ret = mm->add_instruction(migraphx::make_op("gather", {{"axis", 0}}), rsp_data, ind);
@@ -1361,12 +1355,11 @@ TEST_CASE(gather_elements_axis1_test)
     auto l_ind_axis_indices =
         mm->add_literal(migraphx::literal{ind_s, ind_axis_indices.begin(), ind_axis_indices.end()});
     auto l_stride = mm->add_literal(migraphx::literal{{migraphx::shape::int32_type, {1}}, {1}});
-    auto cdata       = mm->add_instruction(migraphx::make_op("contiguous"), data);
-    auto cindices    = mm->add_instruction(migraphx::make_op("contiguous"), indices);
-    auto rsp_data    = mm->add_instruction(migraphx::make_op("reshape", {{"dims", {12}}}), cdata);
+
+    auto rsp_data    = mm->add_instruction(migraphx::make_op("reshape", {{"dims", {12}}}), data);
     auto lbst_stride = mm->add_instruction(
         migraphx::make_op("multibroadcast", {{"out_lens", ind_s.lens()}}), l_stride);
-    auto axis_delta = mm->add_instruction(migraphx::make_op("sub"), cindices, l_ind_axis_indices);
+    auto axis_delta = mm->add_instruction(migraphx::make_op("sub"), indices, l_ind_axis_indices);
     auto mul_delta  = mm->add_instruction(migraphx::make_op("mul"), axis_delta, lbst_stride);
     auto ind        = mm->add_instruction(migraphx::make_op("add"), l_data_indices, mul_delta);
     auto ret = mm->add_instruction(migraphx::make_op("gather", {{"axis", 0}}), rsp_data, ind);
@@ -2630,14 +2623,8 @@ TEST_CASE(nms_test)
     migraphx::shape sst{migraphx::shape::float_type, {1}};
     auto st = mm->add_parameter("score_threshold", sst);
 
-    auto cb   = mm->add_instruction(migraphx::make_op("contiguous"), b);
-    auto cs   = mm->add_instruction(migraphx::make_op("contiguous"), s);
-    auto cmo  = mm->add_instruction(migraphx::make_op("contiguous"), mo);
-    auto ciou = mm->add_instruction(migraphx::make_op("contiguous"), iou);
-    auto cst  = mm->add_instruction(migraphx::make_op("contiguous"), st);
-
     auto ret = mm->add_instruction(
-        migraphx::make_op("nonmaxsuppression", {{"center_point_box", 1}}), cb, cs, cmo, ciou, cst);
+        migraphx::make_op("nonmaxsuppression", {{"center_point_box", 1}}), b, s, mo, iou, st);
     mm->add_return({ret});
 
     auto prog = migraphx::parse_onnx("nms_test.onnx");
@@ -3410,10 +3397,8 @@ TEST_CASE(reshape_test)
         migraphx::literal{migraphx::shape{migraphx::shape::int64_type, {2}}, reshape_dims});
     auto l0 = mm->add_parameter("0", migraphx::shape{migraphx::shape::float_type, {4, 2, 3}});
     op.dims = reshape_dims;
-    auto cl0 = mm->add_instruction(migraphx::make_op("contiguous"), l0);
-    mm->add_instruction(op, cl0);
-    auto cl1 = mm->add_instruction(migraphx::make_op("contiguous"), l0);
-    mm->add_instruction(op, cl1);
+    mm->add_instruction(op, l0);
+    mm->add_instruction(op, l0);
     auto prog = optimize_onnx("reshape_test.onnx");
 
     EXPECT(p == prog);
@@ -3453,8 +3438,8 @@ TEST_CASE(resize_downsample_c_test)
     migraphx::shape si{migraphx::shape::int32_type, {1, 1, 1, 2}};
     std::vector<int> ind = {0, 2};
     auto li              = mm->add_literal(migraphx::literal(si, ind));
-    auto cinx            = mm->add_instruction(migraphx::make_op("contiguous"), inx);
-    auto lrsp            = mm->add_instruction(migraphx::make_op("reshape", {{"dims", {8}}}), cinx);
+
+    auto lrsp = mm->add_instruction(migraphx::make_op("reshape", {{"dims", {8}}}), inx);
     auto r    = mm->add_instruction(migraphx::make_op("gather", {{"axis", 0}}), lrsp, li);
     mm->add_return({r});
 
@@ -3479,8 +3464,8 @@ TEST_CASE(resize_downsample_f_test)
     migraphx::shape si{migraphx::shape::int32_type, {1, 1, 1, 2}};
     std::vector<int> ind = {0, 3};
     auto li              = mm->add_literal(migraphx::literal(si, ind));
-    auto cinx            = mm->add_instruction(migraphx::make_op("contiguous"), inx);
-    auto lrsp            = mm->add_instruction(migraphx::make_op("reshape", {{"dims", {8}}}), cinx);
+
+    auto lrsp = mm->add_instruction(migraphx::make_op("reshape", {{"dims", {8}}}), inx);
     auto r    = mm->add_instruction(migraphx::make_op("gather", {{"axis", 0}}), lrsp, li);
     mm->add_return({r});
 
@@ -3521,8 +3506,7 @@ TEST_CASE(resize_downsample_linear_test)
     auto l1 = mm->add_literal(migraphx::literal(s1, d1));
 
     mm->add_instruction(migraphx::make_op("undefined"));
-    auto cx    = mm->add_instruction(migraphx::make_op("contiguous"), x);
-    auto rsp   = mm->add_instruction(migraphx::make_op("reshape", {{"dims", {8}}}), cx);
+    auto rsp   = mm->add_instruction(migraphx::make_op("reshape", {{"dims", {8}}}), x);
     auto data  = mm->add_instruction(migraphx::make_op("gather", {{"axis", 0}}), rsp, l_ind);
     auto slc80 = mm->add_instruction(
         migraphx::make_op("slice", {{"axes", {0}}, {"starts", {0}}, {"ends", {8}}}), data);
@@ -3575,8 +3559,8 @@ TEST_CASE(resize_outsize_test)
     migraphx::shape si{migraphx::shape::int32_type, {1, 1, 4, 6}};
     std::vector<int> ind = {0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 3, 3, 2, 2, 3, 3, 3, 3, 2, 2, 3, 3, 3, 3};
     auto li              = mm->add_literal(migraphx::literal(si, ind));
-    auto cinx            = mm->add_instruction(migraphx::make_op("contiguous"), inx);
-    auto lrsp            = mm->add_instruction(migraphx::make_op("reshape", {{"dims", {4}}}), cinx);
+
+    auto lrsp = mm->add_instruction(migraphx::make_op("reshape", {{"dims", {4}}}), inx);
     auto r    = mm->add_instruction(migraphx::make_op("gather", {{"axis", 0}}), lrsp, li);
     mm->add_return({r});
 
@@ -3674,8 +3658,7 @@ TEST_CASE(resize_upsample_linear_ac_test)
     auto l1 = mm->add_literal(migraphx::literal(s1, d1));
 
     mm->add_instruction(migraphx::make_op("undefined"));
-    auto cx    = mm->add_instruction(migraphx::make_op("contiguous"), x);
-    auto rsp   = mm->add_instruction(migraphx::make_op("reshape", {{"dims", {4}}}), cx);
+    auto rsp   = mm->add_instruction(migraphx::make_op("reshape", {{"dims", {4}}}), x);
     auto data  = mm->add_instruction(migraphx::make_op("gather", {{"axis", 0}}), rsp, l_ind);
     auto slc80 = mm->add_instruction(
         migraphx::make_op("slice", {{"axes", {0}}, {"starts", {0}}, {"ends", {8}}}), data);
@@ -3770,8 +3753,7 @@ TEST_CASE(resize_upsample_linear_test)
     auto l1 = mm->add_literal(migraphx::literal(s1, d1));
 
     mm->add_instruction(migraphx::make_op("undefined"));
-    auto cx    = mm->add_instruction(migraphx::make_op("contiguous"), x);
-    auto rsp   = mm->add_instruction(migraphx::make_op("reshape", {{"dims", {4}}}), cx);
+    auto rsp   = mm->add_instruction(migraphx::make_op("reshape", {{"dims", {4}}}), x);
     auto data  = mm->add_instruction(migraphx::make_op("gather", {{"axis", 0}}), rsp, l_ind);
     auto slc80 = mm->add_instruction(
         migraphx::make_op("slice", {{"axes", {0}}, {"starts", {0}}, {"ends", {8}}}), data);
@@ -3825,8 +3807,7 @@ TEST_CASE(resize_upsample_pc_test)
     std::vector<int> ind = {0, 1, 1, 2, 3, 3, 0, 1, 1, 2, 3, 3, 4, 5, 5, 6, 7, 7, 4, 5, 5, 6, 7, 7};
     auto li              = mm->add_literal(migraphx::literal(si, ind));
 
-    auto cinx = mm->add_instruction(migraphx::make_op("contiguous"), inx);
-    auto lrsp = mm->add_instruction(migraphx::make_op("reshape", {{"dims", {8}}}), cinx);
+    auto lrsp = mm->add_instruction(migraphx::make_op("reshape", {{"dims", {8}}}), inx);
     auto r    = mm->add_instruction(migraphx::make_op("gather", {{"axis", 0}}), lrsp, li);
     mm->add_return({r});
 
@@ -3853,8 +3834,7 @@ TEST_CASE(resize_upsample_pf_test)
     std::vector<int> ind = {0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 2, 2, 2, 3, 3, 3};
     auto li              = mm->add_literal(migraphx::literal(si, ind));
 
-    auto cinx = mm->add_instruction(migraphx::make_op("contiguous"), inx);
-    auto lrsp = mm->add_instruction(migraphx::make_op("reshape", {{"dims", {4}}}), cinx);
+    auto lrsp = mm->add_instruction(migraphx::make_op("reshape", {{"dims", {4}}}), inx);
     auto r    = mm->add_instruction(migraphx::make_op("gather", {{"axis", 0}}), lrsp, li);
     mm->add_return({r});
 
@@ -3933,10 +3913,7 @@ TEST_CASE(scatter_test)
     auto l2 =
         mm->add_parameter("update", migraphx::shape{migraphx::shape::float_type, {2, 3, 4, 5}});
     int axis = -2;
-    auto cl0 = mm->add_instruction(migraphx::make_op("contiguous"), l0);
-    auto cl1 = mm->add_instruction(migraphx::make_op("contiguous"), l1);
-    auto cl2 = mm->add_instruction(migraphx::make_op("contiguous"), l2);
-    auto r   = mm->add_instruction(migraphx::make_op("scatter", {{"axis", axis}}), cl0, cl1, cl2);
+    auto r   = mm->add_instruction(migraphx::make_op("scatter", {{"axis", axis}}), l0, l1, l2);
     mm->add_return({r});
     auto prog = migraphx::parse_onnx("scatter_test.onnx");
 
@@ -3999,9 +3976,7 @@ TEST_CASE(shape_gather_test)
     auto l1 =
         mm->add_literal(migraphx::shape{migraphx::shape::int64_type, {3}}, l0->get_shape().lens());
     int axis = 0;
-    auto cl1 = mm->add_instruction(migraphx::make_op("contiguous"), l1);
-    auto cl2 = mm->add_instruction(migraphx::make_op("contiguous"), l2);
-    mm->add_instruction(migraphx::make_op("gather", {{"axis", axis}}), cl1, cl2);
+    mm->add_instruction(migraphx::make_op("gather", {{"axis", axis}}), l1, l2);
     auto prog = optimize_onnx("shape_gather_test.onnx");
 
     EXPECT(p == prog);
@@ -4322,10 +4297,8 @@ TEST_CASE(squeeze_unsqueeze_test)
     std::vector<int64_t> unsqueeze_axes{0, 1, 3, 5};
     auto l0 =
         mm->add_parameter("0", migraphx::shape{migraphx::shape::float_type, {1, 3, 1, 1, 2, 1}});
-    auto cl0 = mm->add_instruction(migraphx::make_op("contiguous"), l0);
-    auto l1  = mm->add_instruction(migraphx::make_op("squeeze", {{"axes", squeeze_axes}}), cl0);
-    auto cl1 = mm->add_instruction(migraphx::make_op("contiguous"), l1);
-    mm->add_instruction(migraphx::make_op("unsqueeze", {{"axes", unsqueeze_axes}}), cl1);
+    auto l1 = mm->add_instruction(migraphx::make_op("squeeze", {{"axes", squeeze_axes}}), l0);
+    mm->add_instruction(migraphx::make_op("unsqueeze", {{"axes", unsqueeze_axes}}), l1);
     auto prog = optimize_onnx("squeeze_unsqueeze_test.onnx");
 
     EXPECT(p == prog);
@@ -4337,8 +4310,7 @@ TEST_CASE(squeeze_axes_input_test)
     auto* mm = p.get_main_module();
     mm->add_literal(migraphx::literal({migraphx::shape::int64_type, {2}}, {1, 3}));
     auto l0 = mm->add_parameter("x", migraphx::shape{migraphx::shape::float_type, {3, 1, 5, 1}});
-    auto cl0 = mm->add_instruction(migraphx::make_op("contiguous"), l0);
-    auto l1  = mm->add_instruction(migraphx::make_op("squeeze", {{"axes", {1, 3}}}), cl0);
+    auto l1 = mm->add_instruction(migraphx::make_op("squeeze", {{"axes", {1, 3}}}), l0);
     mm->add_return({l1});
 
     auto prog = migraphx::parse_onnx("squeeze_axes_input_test.onnx");
@@ -4352,8 +4324,7 @@ TEST_CASE(squeeze_empty_axes_test)
     auto* mm = p.get_main_module();
     mm->add_literal({});
     auto l0 = mm->add_parameter("x", migraphx::shape{migraphx::shape::float_type, {3, 1, 5, 1}});
-    auto cl0 = mm->add_instruction(migraphx::make_op("contiguous"), l0);
-    auto l1  = mm->add_instruction(migraphx::make_op("squeeze"), cl0);
+    auto l1 = mm->add_instruction(migraphx::make_op("squeeze"), l0);
     mm->add_return({l1});
 
     auto prog = migraphx::parse_onnx("squeeze_empty_axes_test.onnx");