forked from OSchip/llvm-project
181 lines
7.1 KiB
C++
181 lines
7.1 KiB
C++
//===-- runtime/dot-product.cpp -------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "cpp-type.h"
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#include "descriptor.h"
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#include "reduction.h"
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#include "terminator.h"
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#include "tools.h"
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#include <cinttypes>
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namespace Fortran::runtime {
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template <typename RESULT, TypeCategory XCAT, typename XT, typename YT>
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class Accumulator {
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public:
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using Result = RESULT;
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Accumulator(const Descriptor &x, const Descriptor &y) : x_{x}, y_{y} {}
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void Accumulate(SubscriptValue xAt, SubscriptValue yAt) {
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if constexpr (XCAT == TypeCategory::Complex) {
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sum_ += std::conj(static_cast<Result>(*x_.Element<XT>(&xAt))) *
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static_cast<Result>(*y_.Element<YT>(&yAt));
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} else if constexpr (XCAT == TypeCategory::Logical) {
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sum_ = sum_ ||
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(IsLogicalElementTrue(x_, &xAt) && IsLogicalElementTrue(y_, &yAt));
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} else {
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sum_ += static_cast<Result>(*x_.Element<XT>(&xAt)) *
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static_cast<Result>(*y_.Element<YT>(&yAt));
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}
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}
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Result GetResult() const { return sum_; }
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private:
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const Descriptor &x_, &y_;
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Result sum_{};
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};
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template <typename RESULT, TypeCategory XCAT, typename XT, typename YT>
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static inline RESULT DoDotProduct(
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const Descriptor &x, const Descriptor &y, Terminator &terminator) {
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RUNTIME_CHECK(terminator, x.rank() == 1 && y.rank() == 1);
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SubscriptValue n{x.GetDimension(0).Extent()};
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if (SubscriptValue yN{y.GetDimension(0).Extent()}; yN != n) {
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terminator.Crash(
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"DOT_PRODUCT: SIZE(VECTOR_A) is %jd but SIZE(VECTOR_B) is %jd",
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static_cast<std::intmax_t>(n), static_cast<std::intmax_t>(yN));
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}
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if constexpr (std::is_same_v<XT, YT>) {
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if constexpr (std::is_same_v<XT, float>) {
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// TODO: call BLAS-1 SDOT or SDSDOT
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} else if constexpr (std::is_same_v<XT, double>) {
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// TODO: call BLAS-1 DDOT
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} else if constexpr (std::is_same_v<XT, std::complex<float>>) {
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// TODO: call BLAS-1 CDOTC
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} else if constexpr (std::is_same_v<XT, std::complex<float>>) {
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// TODO: call BLAS-1 ZDOTC
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}
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}
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SubscriptValue xAt{x.GetDimension(0).LowerBound()};
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SubscriptValue yAt{y.GetDimension(0).LowerBound()};
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Accumulator<RESULT, XCAT, XT, YT> accumulator{x, y};
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for (SubscriptValue j{0}; j < n; ++j) {
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accumulator.Accumulate(xAt++, yAt++);
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}
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return accumulator.GetResult();
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}
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template <TypeCategory RCAT, int RKIND> struct DotProduct {
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using Result = CppTypeFor<RCAT, RKIND>;
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template <TypeCategory XCAT, int XKIND> struct DP1 {
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template <TypeCategory YCAT, int YKIND> struct DP2 {
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Result operator()(const Descriptor &x, const Descriptor &y,
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Terminator &terminator) const {
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if constexpr (constexpr auto resultType{
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GetResultType(XCAT, XKIND, YCAT, YKIND)}) {
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if constexpr (resultType->first == RCAT &&
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resultType->second <= RKIND) {
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return DoDotProduct<Result, XCAT, CppTypeFor<XCAT, XKIND>,
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CppTypeFor<YCAT, YKIND>>(x, y, terminator);
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}
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}
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terminator.Crash(
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"DOT_PRODUCT(%d(%d)): bad operand types (%d(%d), %d(%d))",
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static_cast<int>(RCAT), RKIND, static_cast<int>(XCAT), XKIND,
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static_cast<int>(YCAT), YKIND);
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}
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};
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Result operator()(const Descriptor &x, const Descriptor &y,
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Terminator &terminator, TypeCategory yCat, int yKind) const {
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return ApplyType<DP2, Result>(yCat, yKind, terminator, x, y, terminator);
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}
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};
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Result operator()(const Descriptor &x, const Descriptor &y,
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const char *source, int line) const {
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Terminator terminator{source, line};
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auto xCatKind{x.type().GetCategoryAndKind()};
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auto yCatKind{y.type().GetCategoryAndKind()};
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RUNTIME_CHECK(terminator, xCatKind.has_value() && yCatKind.has_value());
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return ApplyType<DP1, Result>(xCatKind->first, xCatKind->second, terminator,
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x, y, terminator, yCatKind->first, yCatKind->second);
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}
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};
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extern "C" {
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std::int8_t RTNAME(DotProductInteger1)(
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const Descriptor &x, const Descriptor &y, const char *source, int line) {
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return DotProduct<TypeCategory::Integer, 8>{}(x, y, source, line);
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}
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std::int16_t RTNAME(DotProductInteger2)(
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const Descriptor &x, const Descriptor &y, const char *source, int line) {
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return DotProduct<TypeCategory::Integer, 8>{}(x, y, source, line);
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}
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std::int32_t RTNAME(DotProductInteger4)(
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const Descriptor &x, const Descriptor &y, const char *source, int line) {
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return DotProduct<TypeCategory::Integer, 8>{}(x, y, source, line);
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}
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std::int64_t RTNAME(DotProductInteger8)(
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const Descriptor &x, const Descriptor &y, const char *source, int line) {
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return DotProduct<TypeCategory::Integer, 8>{}(x, y, source, line);
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}
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#ifdef __SIZEOF_INT128__
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common::int128_t RTNAME(DotProductInteger16)(
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const Descriptor &x, const Descriptor &y, const char *source, int line) {
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return DotProduct<TypeCategory::Integer, 16>{}(x, y, source, line);
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}
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#endif
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// TODO: REAL/COMPLEX(2 & 3)
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float RTNAME(DotProductReal4)(
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const Descriptor &x, const Descriptor &y, const char *source, int line) {
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return DotProduct<TypeCategory::Real, 8>{}(x, y, source, line);
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}
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double RTNAME(DotProductReal8)(
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const Descriptor &x, const Descriptor &y, const char *source, int line) {
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return DotProduct<TypeCategory::Real, 8>{}(x, y, source, line);
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}
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#if LONG_DOUBLE == 80
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long double RTNAME(DotProductReal10)(
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const Descriptor &x, const Descriptor &y, const char *source, int line) {
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return DotProduct<TypeCategory::Real, 10>{}(x, y, source, line);
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}
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#elif LONG_DOUBLE == 128
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long double RTNAME(DotProductReal16)(
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const Descriptor &x, const Descriptor &y, const char *source, int line) {
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return DotProduct<TypeCategory::Real, 16>{}(x, y, source, line);
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}
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#endif
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void RTNAME(CppDotProductComplex4)(std::complex<float> &result,
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const Descriptor &x, const Descriptor &y, const char *source, int line) {
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auto z{DotProduct<TypeCategory::Complex, 8>{}(x, y, source, line)};
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result = std::complex<float>{
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static_cast<float>(z.real()), static_cast<float>(z.imag())};
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}
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void RTNAME(CppDotProductComplex8)(std::complex<double> &result,
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const Descriptor &x, const Descriptor &y, const char *source, int line) {
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result = DotProduct<TypeCategory::Complex, 8>{}(x, y, source, line);
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}
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#if LONG_DOUBLE == 80
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void RTNAME(CppDotProductComplex10)(std::complex<long double> &result,
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const Descriptor &x, const Descriptor &y, const char *source, int line) {
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result = DotProduct<TypeCategory::Complex, 10>{}(x, y, source, line);
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}
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#elif LONG_DOUBLE == 128
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void RTNAME(CppDotProductComplex16)(std::complex<long double> &result,
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const Descriptor &x, const Descriptor &y, const char *source, int line) {
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result = DotProduct<TypeCategory::Complex, 16>{}(x, y, source, line);
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}
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#endif
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bool RTNAME(DotProductLogical)(
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const Descriptor &x, const Descriptor &y, const char *source, int line) {
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return DotProduct<TypeCategory::Logical, 1>{}(x, y, source, line);
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}
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} // extern "C"
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} // namespace Fortran::runtime
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