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frigate/docker/rocm/migraphx/simplify_dyn_ops.cpp

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/*
* The MIT License (MIT)
*
* Copyright (c) 2015-2024 Advanced Micro Devices, Inc. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <migraphx/simplify_dyn_ops.hpp>
#include <migraphx/op/slice.hpp>
#include <migraphx/op/onehot.hpp>
#include <migraphx/matcher.hpp>
#include <migraphx/make_op.hpp>
#include <migraphx/literal.hpp>
#include <migraphx/op/resize.hpp>
#include <migraphx/common.hpp>
#include <migraphx/tensor_view.hpp>
namespace migraphx {
inline namespace MIGRAPHX_INLINE_NS {
/**
* Convert broadcast_with_dims operators with a static input tensor and a constant `dims` input
* into multibroadcast op with a static output shape attribute.
*
*/
struct find_broadcast_with_dims_static
{
auto matcher() const
{
return match::name("broadcast_with_dims")(match::nargs(2),
match::arg(0)(match::static_shape()),
match::arg(1)(match::is_constant()));
}
void apply(module& m, const match::matcher_result& mr) const
{
auto ins = mr.result;
auto inputs = ins->inputs();
// read the values of arg(1) to create input to multibroadcast
std::vector<size_t> sizes_vec;
inputs.at(1)->eval().visit(
[&](auto output) { sizes_vec.assign(output.begin(), output.end()); });
m.replace_instruction(
ins, make_op("multibroadcast", {{"out_lens", sizes_vec}}), inputs.at(0));
}
};
/**
* Convert a Resize op. with Nearest mode to an implementation using Gather op.
* From: resize[scales={...}/sizes={...},](static, constant)
* To:
* 0 = literal{ ... } computed_indices
* ...
* 2 = reshape[dims={45}](X) 1-dimensional
* 3 = gather[axis=0](2,0)
*
* At the time of writing, this conversion is required for GPU targets because there
* is not direct a GPU implementation of the Resize operation.
* This matcher depends on a split_single_dyn_dim pass being run before it, which
* will convert any dynamic-batch input to static inputs and make this conversion possible.
*
* At time of writing, Resize allows either 1 or 2 inputs
* but the 1-input case is never created by Onnx parsing.
*/
struct find_resize_static
{
auto matcher() const
{
return match::name("resize")(match::nargs(2),
match::arg(0)(match::static_shape()),
match::arg(1)(match::is_constant()));
}
void apply(module& m, const match::matcher_result& mr) const
{
auto ins = mr.result;
auto inputs = ins->inputs();
auto resize_op = any_cast<op::resize>(ins->get_operator());
auto in_lens = inputs.at(0)->get_shape().lens();
std::vector<size_t> sizes_vec(inputs.at(0)->get_shape().ndim());
std::vector<float> scales_vec(inputs.at(0)->get_shape().ndim());
// populate both scales and sizes for the benefit of the algorithm.
inputs.at(1)->eval().visit([&](auto input) {
using type = typename decltype(input)::value_type;
if constexpr(std::is_integral<type>{})
{
// read output sizes and use them to compute scales
sizes_vec.assign(input.begin(), input.end());
std::transform(
input.begin(),
input.end(),
in_lens.begin(),
scales_vec.begin(),
[](auto sz, size_t in_len) { return static_cast<float>(sz) / in_len; });
}
else
{
// read scales and use them to compute output sizes
scales_vec.assign(input.begin(), input.end());
std::transform(
input.begin(),
input.end(),
in_lens.begin(),
sizes_vec.begin(),
[](auto sz, size_t in_len) { return static_cast<size_t>(sz * in_len); });
}
});
auto in_s = inputs.at(0)->get_shape();
shape out_s{in_s.type(), sizes_vec};
std::vector<int> ind(out_s.elements());
// map out_idx to in_idx
auto nearest_op = op::resize::get_nearest_op(resize_op.nearest_mode);
auto idx_op = op::resize::get_original_idx_op(resize_op.coordinate_transformation_mode);
shape_for_each(out_s, [&](const auto& out_idx_v, size_t out_idx) {
std::vector<size_t> in_idx(out_idx_v.size());
for(auto ii = 0; ii < in_lens.size(); ++ii)
{
auto idx_val = idx_op(in_lens[ii], sizes_vec[ii], out_idx_v[ii], scales_vec[ii]);
in_idx[ii] = nearest_op(in_lens[ii], idx_val);
}
ind[out_idx] = static_cast<int64_t>(in_s.index(in_idx));
});
// reshape input to one-dimension
std::vector<int64_t> rsp_lens = {static_cast<int64_t>(in_s.elements())};
auto reshape_op = make_op("reshape", {{"dims", rsp_lens}});
auto rsp = m.insert_instruction(ins, reshape_op, ins->inputs().at(0));
// Add our computed indices as a literal.
// ins_ind is a multi dimensional index that will restore original rank
shape ind_s{shape::int32_type, sizes_vec};
auto ins_ind = m.add_literal(literal(ind_s, ind));
m.replace_instruction(ins, make_op("gather", {{"axis", 0}}), rsp, ins_ind);
}
};
/**
* Convert 2 input static shape broadcast/multibroadcast into 1 input version.
* Some compiler passes (ex. simplify_algebra) only support the 1 input versions
* of the broadcasting operators.
* From:
* broadcast_op(argument_with_static_shape, argument_with_static_shape)
* To:
* broadcast_op(argument_with_static_shape); broadcast_op.out_lens = constant_output_dims
*/
struct find_static_2in_broadcasts
{
auto matcher() const
{
return match::broadcast(match::nargs(2),
match::arg(0)(match::static_shape()),
match::arg(1)(match::static_shape()));
}
void apply(module& m, const match::matcher_result& mr) const
{
auto ins = mr.result;
auto out_lens = ins->get_shape().lens();
auto broadcast_op = ins->get_operator();
if(broadcast_op.name() == "broadcast")
{
broadcast_op.from_value({{"out_lens", out_lens}});
}
else
{
broadcast_op.from_value({{"out_lens", out_lens}, {"out_dyn_dims", {}}});
}
m.replace_instruction(ins, broadcast_op, ins->inputs().at(0));
}
};
/**
* Simplify slice with 2 inputs to the 1 input version if inputs[1] is constant.
* From:
* slice(data, constant_input); two attributes set
* To:
* slice(data); slice.starts, slice.ends. slice.axes set
*/
struct find_const_2in_slice
{
auto matcher() const
{
return match::name("slice")(match::nargs(2), match::arg(1)(match::is_constant()));
}
void apply(module& m, const match::matcher_result& mr) const
{
auto ins = mr.result;
auto inputs = ins->inputs();
auto slice_op = any_cast<op::slice>(ins->get_operator());
auto set_attrs = slice_op.get_set_attributes();
std::vector<int64_t> starts_vec;
std::vector<int64_t> ends_vec;
std::vector<int64_t> axes_vec;
if(set_attrs == op::slice::ends_axes)
{
// slice(data, starts)
inputs.at(1)->eval().visit(
[&](auto output) { starts_vec.assign(output.begin(), output.end()); });
ends_vec = slice_op.ends;
axes_vec = slice_op.axes;
}
else if(set_attrs == op::slice::starts_axes)
{
// slice(data, ends)
inputs.at(1)->eval().visit(
[&](auto output) { ends_vec.assign(output.begin(), output.end()); });
starts_vec = slice_op.starts;
axes_vec = slice_op.axes;
}
else
{
// slice(data, axes)
inputs.at(1)->eval().visit(
[&](auto output) { axes_vec.assign(output.begin(), output.end()); });
starts_vec = slice_op.starts;
ends_vec = slice_op.ends;
}
m.replace_instruction(
ins,
make_op("slice", {{"starts", starts_vec}, {"ends", ends_vec}, {"axes", axes_vec}}),
inputs.at(0));
}
};
/**
* Simplify slice with 3 inputs to the 1 input version if inputs[1:2] are constant.
* From:
* slice(data, constant_input1, constant_input2); one attribute set
* To:
* slice(data); slice.starts, slice.ends. slice.axes set
*/
struct find_const_3in_slice
{
auto matcher() const
{
return match::name("slice")(match::nargs(3),
match::arg(1)(match::is_constant()),
match::arg(2)(match::is_constant()));
}
void apply(module& m, const match::matcher_result& mr) const
{
auto ins = mr.result;
auto inputs = ins->inputs();
auto slice_op = any_cast<op::slice>(ins->get_operator());
auto set_attrs = slice_op.get_set_attributes();
std::vector<int64_t> starts_vec;
std::vector<int64_t> ends_vec;
std::vector<int64_t> axes_vec;
if(set_attrs == op::slice::axes_only)
{
// slice(data, starts, ends)
inputs.at(1)->eval().visit(
[&](auto output) { starts_vec.assign(output.begin(), output.end()); });
inputs.at(2)->eval().visit(
[&](auto output) { ends_vec.assign(output.begin(), output.end()); });
axes_vec = slice_op.axes;
}
else if(set_attrs == op::slice::ends_only)
{
// slice(data, starts, axes)
inputs.at(1)->eval().visit(
[&](auto output) { starts_vec.assign(output.begin(), output.end()); });
inputs.at(2)->eval().visit(
[&](auto output) { axes_vec.assign(output.begin(), output.end()); });
ends_vec = slice_op.ends;
}
else
{
// slice(data, ends, axes)
inputs.at(1)->eval().visit(
[&](auto output) { ends_vec.assign(output.begin(), output.end()); });
inputs.at(2)->eval().visit(
[&](auto output) { axes_vec.assign(output.begin(), output.end()); });
starts_vec = slice_op.starts;
}
m.replace_instruction(
ins,
make_op("slice", {{"starts", starts_vec}, {"ends", ends_vec}, {"axes", axes_vec}}),
inputs.at(0));
}
};
/**
* Simplify slice with 4 inputs to the 1 input version if inputs[1:3] are constant.
* From:
* slice(data, constant_starts, constant_ends, constant_axes)
* To:
* slice(data); slice.starts, slice.ends. slice.axes set
*/
struct find_const_4in_slice
{
auto matcher() const
{
return match::name("slice")(match::nargs(4),
match::arg(1)(match::is_constant()),
match::arg(2)(match::is_constant()),
match::arg(3)(match::is_constant()));
}
void apply(module& m, const match::matcher_result& mr) const
{
auto ins = mr.result;
auto inputs = ins->inputs();
argument starts_arg = inputs.at(1)->eval(false);
argument ends_arg = inputs.at(2)->eval(false);
argument axes_arg = inputs.at(3)->eval(false);
if(not starts_arg.empty() and not ends_arg.empty() and not axes_arg.empty())
{
std::vector<int64_t> starts_vec;
std::vector<int64_t> ends_vec;
std::vector<int64_t> axes_vec;
starts_arg.visit([&](auto output) { starts_vec.assign(output.begin(), output.end()); });
ends_arg.visit([&](auto output) { ends_vec.assign(output.begin(), output.end()); });
axes_arg.visit([&](auto output) { axes_vec.assign(output.begin(), output.end()); });
m.replace_instruction(
ins,
make_op("slice", {{"starts", starts_vec}, {"ends", ends_vec}, {"axes", axes_vec}}),
inputs.at(0));
}
}
};
/**
* Simplify dimensions_of to a literal when the input arugment has a static shape
* or the dynamic dimensions from `start` to `end` are fixed.
*/
struct find_static_dimensions_of
{
auto matcher() const { return match::name("dimensions_of")(); }
void apply(module& m, const match::matcher_result& mr) const
{
auto ins = mr.result;
auto input = ins->inputs().at(0);
auto dimensions_of_value = ins->get_operator().to_value();
auto start = dimensions_of_value.at("start").to<std::size_t>();
auto end = dimensions_of_value.at("end").to<std::size_t>();
if(input->get_shape().dynamic())
{
// check if dynamic dimensions from start to end are fixed
auto dds = input->get_shape().dyn_dims();
if(std::any_of(dds.begin() + start, dds.begin() + end, [](auto dd) {
return not dd.is_fixed();
}))
{
return;
}
}
std::size_t output_ndim = end - start;
std::vector<int64_t> vec_shape(output_ndim);
migraphx::shape s(migraphx::shape::int64_type, {output_ndim});
std::vector<std::size_t> input_lens = input->get_shape().to_static(1).lens();
std::transform(input_lens.begin() + start,
input_lens.begin() + end,
vec_shape.begin(),
[](auto i) { return int64_t(i); });
migraphx::shape output_shape{migraphx::shape::int64_type, {end - start}};
auto lit_ins = m.add_literal(migraphx::literal{output_shape, vec_shape});
m.replace_instruction(ins, lit_ins);
}
};
/**
* Simplify allocate into 2 argument reshape that has constant output dimensions into a static 1
* argument reshape. Intended to simplify what ONNX parse_reshape creates for dynamic reshapes.
* This matcher can be generalized to matching reshape(data, static_shape_output_tensor).
* From:
* x = allocate(constant_output_dims) -> reshape(data, x)
* To:
* reshape(data); reshape.dims = constant_output_dims
*/
struct find_const_alloc_reshapes
{
auto matcher() const
{
auto const_alloc = match::arg(1)(match::name("allocate")(match::is_constant()));
return match::name("reshape")(match::nargs(2), const_alloc);
}
void apply(module& m, const match::matcher_result& mr) const
{
auto reshape_ins = mr.result;
auto reshape_inputs = reshape_ins->inputs();
auto alloc_ins = reshape_inputs.at(1);
argument output_dims_arg = alloc_ins->inputs().at(0)->eval(false);
std::vector<int64_t> output_dims_vec;
output_dims_arg.visit(
[&](auto output) { output_dims_vec.assign(output.begin(), output.end()); });
m.replace_instruction(
reshape_ins, make_op("reshape", {{"dims", output_dims_vec}}), reshape_inputs.at(0));
// have dead_code_elimination remove the previous allocate
}
};
/**
* Simplify allocate into fill operator that has constant output dimensions and constant value.
* The allocate into fill instructions is what is produced when parsing the ONNX
* ConstantOfShape operator. This replacement could be handled with propagate_constant, but
* would rather have the simplification happen earlier during compiling.
* This matcher can be generalized to matching fill(constant_value, static_shape_output_tensor).
* From:
* x = allocate(constant_ouptut_dims) -> fill(constant_value, x)
* To:
* literal
*/
struct find_const_alloc_fill
{
auto matcher() const
{
auto const_alloc = match::arg(1)(match::name("allocate")(match::is_constant()));
return match::name("fill")(match::arg(0)(match::is_constant()), const_alloc);
}
void apply(module& m, const match::matcher_result& mr) const
{
auto fill_ins = mr.result;
auto fill_arg = fill_ins->eval(false);
auto l = m.add_literal(fill_arg.get_shape(), fill_arg.data());
m.replace_instruction(fill_ins, l);
}
};
/**
* Simplify broadcast_for_dot instructions with two static shaped arguments
* From:
* broadcast_for_dot(static_shape_arg, static_shape_arg)
* To:
* multibroadcast(static_shape_arg); output_lens = static_broadcast_for_doted_shape
*/
struct find_static_broadcast_for_dot
{
auto matcher() const
{
return match::name("broadcast_for_dot")(match::arg(0)(match::static_shape()),
match::arg(1)(match::static_shape()));
}
void apply(module& m, const match::matcher_result& mr) const
{
auto broadcast_for_dot_ins = mr.result;
auto inputs = broadcast_for_dot_ins->inputs();
auto s0 = inputs.at(0)->get_shape();
auto s1 = inputs.at(1)->get_shape();
auto l0_it = s0.lens().end() - 2;
std::vector<std::size_t> l0_broadcasted_lens(s0.lens().begin(), l0_it);
auto l1_it = s1.lens().begin() + s1.ndim() - 2;
std::vector<std::size_t> l1_broadcasted_lens(s1.lens().begin(), l1_it);
auto output_lens = compute_broadcasted_lens(l0_broadcasted_lens, l1_broadcasted_lens);
output_lens.insert(output_lens.end(), l0_it, s0.lens().end());
m.replace_instruction(broadcast_for_dot_ins,
make_op("multibroadcast", {{"out_lens", output_lens}}),
inputs.at(0));
}
};
/**
* Simplify onehot instructions with static shape `indices` input and
* a compile-time constant `depth` attribute or input.
* From:
* onehot(static_shape_arg, constant_arg, values) or
* onehot(static_shape_arg, values)
* To:
* A = literal(shape = onehot_output_shape, value = 0)
* B = unsqueeze(literal(lens = indices_lens, strides = broadcasted scalar, value = 1),
* axis=onehot_axis) C = scatter(A, unsqueeze(indices, axis=onehot_axis), B) diff = on_value -
* off_value D = mul(diff, C); return = add(D, off_value);
*
* NOTE: It might be cleaner to use some form of `fill` instead of
* (on_value - off_value) * mask + off_value when we have `fill` working
* on the GPU.
*/
struct find_static_onehot
{
auto matcher() const
{
auto match_2_args = match::nargs(2)(match::arg(0)(match::static_shape()),
match::arg(1)(match::static_shape()));
auto match_3_args = match::nargs(3)(match::arg(0)(match::static_shape()),
match::arg(1)(match::is_constant()),
match::arg(2)(match::static_shape()));
return match::name("onehot")(match::any_of(match_2_args, match_3_args));
}
void apply(module& m, const match::matcher_result& mr) const
{
auto onehot_ins = mr.result;
auto onehot_inputs = onehot_ins->inputs();
auto onehot_op = any_cast<op::onehot>(onehot_ins->get_operator());
auto indices_ins = onehot_inputs[0];
shape indices_shape = indices_ins->get_shape();
std::size_t depth_val;
migraphx::instruction_ref values_ins;
if(onehot_op.depth.has_value())
{
assert(onehot_inputs.size() == 2);
depth_val = onehot_op.depth.value();
values_ins = onehot_inputs[1];
}
else
{
assert(onehot_inputs.size() == 3);
auto depth_ins = onehot_inputs[1];
depth_ins->eval().visit([&](auto d) { depth_val = d[0]; });
values_ins = onehot_inputs[2];
}
shape values_shape = values_ins->get_shape();
std::vector<std::size_t> static_output_lens = indices_shape.lens();
auto normalized_axis =
(onehot_op.axis < 0) ? onehot_op.axis + indices_shape.ndim() + 1 : onehot_op.axis;
static_output_lens.insert(static_output_lens.begin() + normalized_axis, depth_val);
shape output_shape{values_shape.type(), static_output_lens};
std::vector<float> zeros(output_shape.elements(), 0);
auto zeros_lit = m.add_literal(literal(output_shape, zeros));
auto unsqueeze_inds = m.insert_instruction(
onehot_ins, migraphx::make_op("unsqueeze", {{"axes", {normalized_axis}}}), indices_ins);
// broadcast the one scalar to the correct shape
auto ones_lit = m.add_literal(literal(shape{values_shape.type(), {1}, {0}}, {1}));
auto mb_ones = m.insert_instruction(
onehot_ins,
migraphx::make_op("multibroadcast", {{"out_lens", unsqueeze_inds->get_shape().lens()}}),
ones_lit);
auto mask = m.insert_instruction(
onehot_ins,
make_op("scatter_none", {{"axis", normalized_axis}, {"skip_out_of_bounds", true}}),
zeros_lit,
unsqueeze_inds,
mb_ones);
auto off_val =
m.insert_instruction(onehot_ins,
make_op("slice", {{"axes", {0}}, {"starts", {0}}, {"ends", {1}}}),
values_ins);
auto on_val =
m.insert_instruction(onehot_ins,
make_op("slice", {{"axes", {0}}, {"starts", {1}}, {"ends", {2}}}),
values_ins);
auto diff_val = m.insert_instruction(onehot_ins, make_op("sub"), on_val, off_val);
auto mul_diff_mask = insert_common_op(m, onehot_ins, make_op("mul"), {diff_val, mask});
auto mb_off_val = m.insert_instruction(
onehot_ins, make_op("multibroadcast", {{"out_lens", output_shape.lens()}}), off_val);
m.replace_instruction(onehot_ins, make_op("add"), mb_off_val, mul_diff_mask);
}
};
/**
* Go through `select_module` instructions and update the `output_dyn_shapes` attribute.
* Checks the submodule output shapes and determines an appropriate `output_dyn_shapes` attribute.
* This version ignores dynamic_dimension opt values.
* Intended to be run after the other simplify_dyn_ops passes.
*/
struct simplify_select_module_output_shape
{
auto matcher() const { return match::name("select_module"); }
void apply(module& m, const match::matcher_result& mr) const
{
auto sm_ins = mr.result;
auto sm_module_inputs = sm_ins->module_inputs();
std::vector<std::vector<shape>> all_output_shapes(sm_module_inputs.size());
std::transform(sm_module_inputs.begin(),
sm_module_inputs.end(),
all_output_shapes.begin(),
[](auto submod) { return submod->get_output_shapes(); });
// check that all of the submodules have the same number of outputs and all respective
// outputs have the same rank and type
auto shapes_ndim = get_shapes_ndim(all_output_shapes.front());
auto shapes_types = get_shapes_types(all_output_shapes.front());
if(std::any_of(
all_output_shapes.begin() + 1, all_output_shapes.end(), [&](auto out_shapes) {
bool same_types = get_shapes_types(out_shapes) == shapes_types;
bool same_ndim = get_shapes_ndim(out_shapes) == shapes_ndim;
return not same_types or not same_ndim;
}))
{
return;
}
auto num_out_shapes = shapes_ndim.size();
std::vector<shape> dyn_shapes(num_out_shapes);
auto num_submod = sm_module_inputs.size();
// compare respective output shapes from each submodule to get a range for the output shape
for(int i : range(num_out_shapes))
{
std::vector<shape> shapes_at_index(num_submod);
std::transform(all_output_shapes.begin(),
all_output_shapes.end(),
shapes_at_index.begin(),
[&](auto output_shapes) { return output_shapes.at(i); });
dyn_shapes.at(i) = dyn_shape_from_shapes(shapes_at_index);
}
auto tuple_shape = shape{dyn_shapes};
m.replace_instruction(
sm_ins,
make_op("select_module", {{"output_dyn_shapes", to_value(tuple_shape)}}),
sm_ins->inputs(),
sm_module_inputs);
}
std::vector<std::size_t> get_shapes_ndim(const std::vector<shape>& shapes) const
{
std::vector<std::size_t> ret(shapes.size());
std::transform(
shapes.cbegin(), shapes.cend(), ret.begin(), [](auto s) { return s.ndim(); });
return ret;
}
std::vector<shape::type_t> get_shapes_types(const std::vector<shape>& shapes) const
{
std::vector<shape::type_t> ret(shapes.size());
std::transform(
shapes.cbegin(), shapes.cend(), ret.begin(), [](auto s) { return s.type(); });
return ret;
}
/**
* Calculating an appropriate shape that encompasses all of the given vector of shapes.
* Equivalent to creating a 2D matrix of shape lengths and do a reduce over each axis.
* The shapes can be dynamic or static.
* Assuming all shapes have the same ndim.
*/
shape dyn_shape_from_shapes(std::vector<shape> shape_vec) const
{
// making 2D matrices of min_lens and max_lens
// specifically using uint64_t because we're going to put the values into a tensor_view
// later
std::vector<uint64_t> all_min_lens;
std::vector<uint64_t> all_max_lens;
for(const auto& s : shape_vec)
{
auto min_lens = s.min_lens();
auto max_lens = s.max_lens();
std::copy(min_lens.begin(), min_lens.end(), std::back_inserter(all_min_lens));
std::copy(max_lens.begin(), max_lens.end(), std::back_inserter(all_max_lens));
}
assert(all_min_lens.size() == shape_vec.size() * shape_vec.front().ndim());
assert(all_max_lens.size() == shape_vec.size() * shape_vec.front().ndim());
auto num_rows = shape_vec.size();
auto num_cols = shape_vec.front().ndim();
shape tensor_shape{shape::uint64_type, {num_rows, num_cols}};
auto min_lens_matrix = make_view(tensor_shape, all_min_lens.data());
auto max_lens_matrix = make_view(tensor_shape, all_max_lens.data());
std::vector<uint64_t> mins(num_cols);
std::vector<uint64_t> maxes(num_cols);
// rearranging data into column vectors to reduce over
// i = row, j = column
for(int j : range(num_cols))
{
std::vector<uint64_t> reduce_min_vals(num_rows);
std::vector<uint64_t> reduce_max_vals(num_rows);
for(int i : range(num_rows))
{
reduce_min_vals.at(i) = min_lens_matrix(i, j);
reduce_max_vals.at(i) = max_lens_matrix(i, j);
}
uint64_t max_int = std::numeric_limits<uint64_t>::max();
uint64_t min_val =
std::accumulate(reduce_min_vals.begin(),
reduce_min_vals.end(),
max_int,
[](uint64_t x, uint64_t y) { return x < y ? x : y; });
uint64_t max_val = std::accumulate(
reduce_max_vals.begin(), reduce_max_vals.end(), 0, [](uint64_t x, uint64_t y) {
return x > y ? x : y;
});
mins.at(j) = min_val;
maxes.at(j) = max_val;
}
// fixed output shape case
if(mins == maxes)
{
return shape{shape_vec.front().type(), mins};
}
// dynamic output shape case
return shape{shape_vec.front().type(), mins, maxes, {}};
}
};
void simplify_dyn_ops::apply(module& m) const
{
match::find_matches(m,
find_broadcast_with_dims_static{},
find_resize_static{},
find_static_dimensions_of{},
find_const_alloc_reshapes{},
find_static_2in_broadcasts{},
find_const_2in_slice{},
find_const_3in_slice{},
find_const_4in_slice{},
find_const_alloc_fill{},
find_static_broadcast_for_dot{},
find_static_onehot{});
match::find_matches(m, simplify_select_module_output_shape{});
}
} // namespace MIGRAPHX_INLINE_NS
} // namespace migraphx
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