| // Copyright 2022 The Tint Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "src/tint/transform/vectorize_matrix_conversions.h" |
| |
| #include <tuple> |
| #include <unordered_map> |
| #include <utility> |
| |
| #include "src/tint/program_builder.h" |
| #include "src/tint/sem/call.h" |
| #include "src/tint/sem/value_conversion.h" |
| #include "src/tint/sem/value_expression.h" |
| #include "src/tint/type/abstract_numeric.h" |
| #include "src/tint/utils/hash.h" |
| #include "src/tint/utils/map.h" |
| |
| TINT_INSTANTIATE_TYPEINFO(tint::transform::VectorizeMatrixConversions); |
| |
| namespace tint::transform { |
| |
| namespace { |
| |
| bool ShouldRun(const Program* program) { |
| for (auto* node : program->ASTNodes().Objects()) { |
| if (auto* sem = program->Sem().GetVal(node)) { |
| if (auto* call = sem->UnwrapMaterialize()->As<sem::Call>()) { |
| if (call->Target()->Is<sem::ValueConversion>() && |
| call->Type()->Is<type::Matrix>()) { |
| auto& args = call->Arguments(); |
| if (args.Length() == 1 && args[0]->Type()->UnwrapRef()->is_float_matrix()) { |
| return true; |
| } |
| } |
| } |
| } |
| } |
| return false; |
| } |
| |
| } // namespace |
| |
| VectorizeMatrixConversions::VectorizeMatrixConversions() = default; |
| |
| VectorizeMatrixConversions::~VectorizeMatrixConversions() = default; |
| |
| Transform::ApplyResult VectorizeMatrixConversions::Apply(const Program* src, |
| const DataMap&, |
| DataMap&) const { |
| if (!ShouldRun(src)) { |
| return SkipTransform; |
| } |
| |
| ProgramBuilder b; |
| CloneContext ctx{&b, src, /* auto_clone_symbols */ true}; |
| |
| using HelperFunctionKey = |
| utils::UnorderedKeyWrapper<std::tuple<const type::Matrix*, const type::Matrix*>>; |
| |
| std::unordered_map<HelperFunctionKey, Symbol> matrix_convs; |
| |
| ctx.ReplaceAll([&](const ast::CallExpression* expr) -> const ast::CallExpression* { |
| auto* call = src->Sem().Get(expr)->UnwrapMaterialize()->As<sem::Call>(); |
| auto* ty_conv = call->Target()->As<sem::ValueConversion>(); |
| if (!ty_conv) { |
| return nullptr; |
| } |
| auto* dst_type = call->Type()->As<type::Matrix>(); |
| if (!dst_type) { |
| return nullptr; |
| } |
| |
| auto& args = call->Arguments(); |
| if (args.Length() != 1) { |
| return nullptr; |
| } |
| |
| auto& matrix = args[0]; |
| |
| auto* src_type = matrix->Type()->UnwrapRef()->As<type::Matrix>(); |
| if (!src_type) { |
| return nullptr; |
| } |
| |
| // The source and destination type of a matrix conversion must have a same shape. |
| if (TINT_UNLIKELY(!(src_type->rows() == dst_type->rows() && |
| src_type->columns() == dst_type->columns()))) { |
| TINT_ICE(Transform, b.Diagnostics()) |
| << "source and destination matrix has different shape in matrix conversion"; |
| return nullptr; |
| } |
| |
| auto build_vectorized_conversion_expression = [&](auto&& src_expression_builder) { |
| utils::Vector<const ast::Expression*, 4> columns; |
| for (uint32_t c = 0; c < dst_type->columns(); c++) { |
| auto* src_matrix_expr = src_expression_builder(); |
| auto* src_column_expr = b.IndexAccessor(src_matrix_expr, b.Expr(tint::AInt(c))); |
| columns.Push( |
| b.Call(CreateASTTypeFor(ctx, dst_type->ColumnType()), src_column_expr)); |
| } |
| return b.Call(CreateASTTypeFor(ctx, dst_type), columns); |
| }; |
| |
| // Replace the matrix conversion to column vector conversions and a matrix construction. |
| if (!matrix->HasSideEffects()) { |
| // Simply use the argument's declaration if it has no side effects. |
| return build_vectorized_conversion_expression([&]() { // |
| return ctx.Clone(matrix->Declaration()); |
| }); |
| } else { |
| // If has side effects, use a helper function. |
| auto fn = |
| utils::GetOrCreate(matrix_convs, HelperFunctionKey{{src_type, dst_type}}, [&] { |
| auto name = b.Symbols().New( |
| "convert_mat" + std::to_string(src_type->columns()) + "x" + |
| std::to_string(src_type->rows()) + "_" + b.FriendlyName(src_type->type()) + |
| "_" + b.FriendlyName(dst_type->type())); |
| b.Func(name, |
| utils::Vector{ |
| b.Param("value", CreateASTTypeFor(ctx, src_type)), |
| }, |
| CreateASTTypeFor(ctx, dst_type), |
| utils::Vector{ |
| b.Return(build_vectorized_conversion_expression([&]() { // |
| return b.Expr("value"); |
| })), |
| }); |
| return name; |
| }); |
| return b.Call(fn, ctx.Clone(args[0]->Declaration())); |
| } |
| }); |
| |
| ctx.Clone(); |
| return Program(std::move(b)); |
| } |
| |
| } // namespace tint::transform |