ngraph/test/runtime/pass/dyn_elimination.cpp

   1 //*****************************************************************************
   2 // Copyright 2017-2020 Intel Corporation
   3 //
   4 // Licensed under the Apache License, Version 2.0 (the "License");
   5 // you may not use this file except in compliance with the License.
   6 // You may obtain a copy of the License at
   7 //
   8 //     http://www.apache.org/licenses/LICENSE-2.0
   9 //
  10 // Unless required by applicable law or agreed to in writing, software
  11 // distributed under the License is distributed on an "AS IS" BASIS,
  12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 // See the License for the specific language governing permissions and
  14 // limitations under the License.
  15 //*****************************************************************************
  16
  17 #include <numeric>
  18
  19 #include "dyn_elimination.hpp"
  20 #include "ngraph/op/broadcast.hpp"
  21 #include "ngraph/op/range.hpp"
  22 #include "ngraph/op/replace_slice.hpp"
  23 #include "ngraph/op/reshape.hpp"
  24 #include "ngraph/op/reverse.hpp"
  25 #include "ngraph/op/slice.hpp"
  26 #include "ngraph/op/transpose.hpp"
  27 #include "ngraph/pattern/matcher.hpp"
  28 #include "ngraph/pattern/op/label.hpp"
  29 #include "ngraph/runtime/reference/range.hpp"
  30 #include "ngraph/slice_plan.hpp"
  31
  32 using namespace std;
  33 using namespace ngraph;
  34
  35 pass::DynElimination::DynElimination()
  36     : GraphRewrite()
  37 {
  38     construct_transpose();
  39     construct_range();
  40 }
  41
  42 void pass::DynElimination::construct_transpose()
  43 {
  44     auto data_arg_label = make_shared<pattern::op::Label>(element::f32, Shape{1, 2, 3});
  45     auto perm_arg_label =
  46         make_shared<pattern::op::Label>(element::i64, Shape{3}, pattern::has_class<op::Constant>());
  47
  48     auto transpose = make_shared<op::Transpose>(data_arg_label, perm_arg_label);
  49
  50     auto transpose_callback = [data_arg_label, perm_arg_label](pattern::Matcher& m) {
  51         auto pattern_map = m.get_pattern_map();
  52
  53         auto data_arg = pattern_map[data_arg_label];
  54         auto perm_arg = static_pointer_cast<op::Constant>(pattern_map[perm_arg_label]);
  55
  56         // TODO(amprocte): Can't handle the case where data shape is dynamic, because static
  57         // Reshape requries the exact output shape to be declared. See if we can come up with a
  58         // workaround.
  59         if (data_arg->get_output_partial_shape(0).is_dynamic())
  60         {
  61             return false;
  62         }
  63
  64         auto& data_shape = data_arg->get_output_shape(0);
  65
  66         NGRAPH_CHECK(perm_arg->get_output_partial_shape(0).rank().compatible(1));
  67         NGRAPH_CHECK(perm_arg->get_output_element_type(0).compatible(element::i64));
  68
  69         if (perm_arg->get_output_element_type(0).is_dynamic() ||
  70             perm_arg->get_output_partial_shape(0).is_dynamic())
  71         {
  72             return false;
  73         }
  74
  75         auto perm = perm_arg->get_axis_vector_val();
  76
  77         auto output_shape = ngraph::apply_permutation(data_shape, perm);
  78
  79         auto replacement = std::make_shared<op::Reshape>(data_arg, perm, output_shape);
  80
  81         replace_node(m.get_match_root(), replacement);
  82         return true;
  83     };
  84
  85     auto transpose_matcher = make_shared<pattern::Matcher>(transpose, "DynElimination.Transpose");
  86     add_matcher(transpose_matcher, transpose_callback, all_pass_property_off);
  87 }
  88
  89 template <typename T>
  90 std::shared_ptr<op::Constant> make_range_replacement(const element::Type& et,
  91                                                      const Shape& shape,
  92                                                      const std::shared_ptr<op::Constant>& start_arg,
  93                                                      const std::shared_ptr<op::Constant>& step_arg)
  94 {
  95     std::vector<T> elements(shape_size(shape));
  96     std::vector<T> start_vec = start_arg->get_vector<T>();
  97     std::vector<T> step_vec = step_arg->get_vector<T>();
  98
  99     NGRAPH_CHECK(start_vec.size() == 1 && step_vec.size() == 1);
 100
 101     runtime::reference::range<T>(start_vec.data(), step_vec.data(), shape, elements.data());
 102
 103     return make_shared<op::Constant>(et, shape, elements);
 104 }
 105
 106 void pass::DynElimination::construct_range()
 107 {
 108     auto start_arg_label =
 109         make_shared<pattern::op::Label>(element::f32, Shape{}, pattern::has_class<op::Constant>());
 110     auto stop_arg_label =
 111         make_shared<pattern::op::Label>(element::f32, Shape{}, pattern::has_class<op::Constant>());
 112     auto step_arg_label =
 113         make_shared<pattern::op::Label>(element::f32, Shape{}, pattern::has_class<op::Constant>());
 114
 115     auto range_pat = make_shared<op::Range>(start_arg_label, stop_arg_label, step_arg_label);
 116
 117     auto range_callback = [start_arg_label, stop_arg_label, step_arg_label](pattern::Matcher& m) {
 118         auto pattern_map = m.get_pattern_map();
 119
 120         auto start_arg = static_pointer_cast<op::Constant>(pattern_map[start_arg_label]);
 121         auto step_arg = static_pointer_cast<op::Constant>(pattern_map[step_arg_label]);
 122         auto range_node = static_pointer_cast<op::Range>(m.get_match_root());
 123
 124         NGRAPH_CHECK(start_arg->get_output_partial_shape(0).rank().compatible(0) &&
 125                      step_arg->get_output_partial_shape(0).rank().compatible(0));
 126
 127         auto et = range_node->get_output_element_type(0);
 128         auto shape = range_node->get_output_shape(0);
 129
 130         std::shared_ptr<op::Constant> replacement;
 131
 132 #if defined(__GNUC__) && !(__GNUC__ == 4 && __GNUC_MINOR__ == 8)
 133 #pragma GCC diagnostic push
 134 #pragma GCC diagnostic error "-Wswitch"
 135 #pragma GCC diagnostic error "-Wswitch-enum"
 136 #endif
 137         switch (et)
 138         {
 139         case element::Type_t::bf16:
 140             replacement = make_range_replacement<bfloat16>(et, shape, start_arg, step_arg);
 141             break;
 142         case element::Type_t::f16:
 143             replacement = make_range_replacement<float16>(et, shape, start_arg, step_arg);
 144             break;
 145         case element::Type_t::f32:
 146             replacement = make_range_replacement<float>(et, shape, start_arg, step_arg);
 147             break;
 148         case element::Type_t::f64:
 149             replacement = make_range_replacement<double>(et, shape, start_arg, step_arg);
 150             break;
 151         case element::Type_t::i8:
 152             replacement = make_range_replacement<int8_t>(et, shape, start_arg, step_arg);
 153             break;
 154         case element::Type_t::i16:
 155             replacement = make_range_replacement<int16_t>(et, shape, start_arg, step_arg);
 156             break;
 157         case element::Type_t::i32:
 158             replacement = make_range_replacement<int32_t>(et, shape, start_arg, step_arg);
 159             break;
 160         case element::Type_t::i64:
 161             replacement = make_range_replacement<int64_t>(et, shape, start_arg, step_arg);
 162             break;
 163         case element::Type_t::u8:
 164             replacement = make_range_replacement<uint8_t>(et, shape, start_arg, step_arg);
 165             break;
 166         case element::Type_t::u16:
 167             replacement = make_range_replacement<uint16_t>(et, shape, start_arg, step_arg);
 168             break;
 169         case element::Type_t::u32:
 170             replacement = make_range_replacement<uint32_t>(et, shape, start_arg, step_arg);
 171             break;
 172         case element::Type_t::u64:
 173             replacement = make_range_replacement<uint64_t>(et, shape, start_arg, step_arg);
 174             break;
 175         case element::Type_t::u1:
 176         case element::Type_t::undefined:
 177         case element::Type_t::dynamic:
 178         case element::Type_t::boolean:
 179             NGRAPH_CHECK(false, "Internal nGraph error: unsupported element type: ", et);
 180             break;
 181         }
 182 #if defined(__GNUC__) && !(__GNUC__ == 4 && __GNUC_MINOR__ == 8)
 183 #pragma GCC diagnostic pop
 184 #endif
 185
 186         replace_node(range_node, replacement);
 187         return true;
 188     };
 189
 190     auto range_matcher = make_shared<pattern::Matcher>(range_pat, "DynElimination.Range");
 191     add_matcher(range_matcher, range_callback, all_pass_property_off);
 192 }