| //===-- lib/Evaluate/fold-complex.cpp -------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "fold-implementation.h" |
| |
| namespace Fortran::evaluate { |
| |
| template <int KIND> |
| Expr<Type<TypeCategory::Complex, KIND>> FoldIntrinsicFunction( |
| FoldingContext &context, |
| FunctionRef<Type<TypeCategory::Complex, KIND>> &&funcRef) { |
| using T = Type<TypeCategory::Complex, KIND>; |
| ActualArguments &args{funcRef.arguments()}; |
| auto *intrinsic{std::get_if<SpecificIntrinsic>(&funcRef.proc().u)}; |
| CHECK(intrinsic); |
| std::string name{intrinsic->name}; |
| if (name == "acos" || name == "acosh" || name == "asin" || name == "asinh" || |
| name == "atan" || name == "atanh" || name == "cos" || name == "cosh" || |
| name == "exp" || name == "log" || name == "sin" || name == "sinh" || |
| name == "sqrt" || name == "tan" || name == "tanh") { |
| if (auto callable{GetHostRuntimeWrapper<T, T>(name)}) { |
| return FoldElementalIntrinsic<T, T>( |
| context, std::move(funcRef), *callable); |
| } else { |
| context.messages().Say( |
| "%s(complex(kind=%d)) cannot be folded on host"_en_US, name, KIND); |
| } |
| } else if (name == "conjg") { |
| return FoldElementalIntrinsic<T, T>( |
| context, std::move(funcRef), &Scalar<T>::CONJG); |
| } else if (name == "cmplx") { |
| using Part = typename T::Part; |
| if (args.size() == 2) { // CMPLX(X, [KIND]) |
| if (auto *x{UnwrapExpr<Expr<SomeComplex>>(args[0])}) { |
| return Fold(context, ConvertToType<T>(std::move(*x))); |
| } |
| Expr<SomeType> re{std::move(*args[0].value().UnwrapExpr())}; |
| Expr<SomeType> im{AsGenericExpr(Constant<Part>{Scalar<Part>{}})}; |
| return Fold(context, |
| Expr<T>{ComplexConstructor<KIND>{ToReal<KIND>(context, std::move(re)), |
| ToReal<KIND>(context, std::move(im))}}); |
| } |
| // CMPLX(X, [Y, KIND]) |
| CHECK(args.size() == 3); |
| Expr<SomeType> re{std::move(*args[0].value().UnwrapExpr())}; |
| Expr<SomeType> im{args[1] ? std::move(*args[1].value().UnwrapExpr()) |
| : AsGenericExpr(Constant<Part>{Scalar<Part>{}})}; |
| return Fold(context, |
| Expr<T>{ComplexConstructor<KIND>{ToReal<KIND>(context, std::move(re)), |
| ToReal<KIND>(context, std::move(im))}}); |
| } else if (name == "merge") { |
| return FoldMerge<T>(context, std::move(funcRef)); |
| } |
| // TODO: cshift, dot_product, eoshift, matmul, pack, product, |
| // reduce, spread, sum, transfer, transpose, unpack |
| return Expr<T>{std::move(funcRef)}; |
| } |
| |
| template <int KIND> |
| Expr<Type<TypeCategory::Complex, KIND>> FoldOperation( |
| FoldingContext &context, ComplexConstructor<KIND> &&x) { |
| if (auto array{ApplyElementwise(context, x)}) { |
| return *array; |
| } |
| using Result = Type<TypeCategory::Complex, KIND>; |
| if (auto folded{OperandsAreConstants(x)}) { |
| return Expr<Result>{ |
| Constant<Result>{Scalar<Result>{folded->first, folded->second}}}; |
| } |
| return Expr<Result>{std::move(x)}; |
| } |
| |
| FOR_EACH_COMPLEX_KIND(template class ExpressionBase, ) |
| template class ExpressionBase<SomeComplex>; |
| } // namespace Fortran::evaluate |