FastDeploy/third_party/eigen/test/unalignedassert.cpp

// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2008 Benoit Jacob <jacob.benoit.1@gmail.com>
// Copyright (C) 2015 Gael Guennebaud <gael.guennebaud@inria.fr>
//
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.

#if defined(EIGEN_TEST_PART_1)
// default
#elif defined(EIGEN_TEST_PART_2)
#define EIGEN_MAX_STATIC_ALIGN_BYTES 16
#define EIGEN_MAX_ALIGN_BYTES 16
#elif defined(EIGEN_TEST_PART_3)
#define EIGEN_MAX_STATIC_ALIGN_BYTES 32
#define EIGEN_MAX_ALIGN_BYTES 32
#elif defined(EIGEN_TEST_PART_4)
#define EIGEN_MAX_STATIC_ALIGN_BYTES 64
#define EIGEN_MAX_ALIGN_BYTES 64
#endif

#include "main.h"

typedef Matrix<float, 6, 1> Vector6f;
typedef Matrix<float, 8, 1> Vector8f;
typedef Matrix<float, 12, 1> Vector12f;

typedef Matrix<double, 5, 1> Vector5d;
typedef Matrix<double, 6, 1> Vector6d;
typedef Matrix<double, 7, 1> Vector7d;
typedef Matrix<double, 8, 1> Vector8d;
typedef Matrix<double, 9, 1> Vector9d;
typedef Matrix<double, 10, 1> Vector10d;
typedef Matrix<double, 12, 1> Vector12d;

struct TestNew1 {
  MatrixXd m;  // good: m will allocate its own array, taking care of alignment.
  TestNew1() : m(20, 20) {}
};

struct TestNew2 {
  Matrix3d m;  // good: m's size isn't a multiple of 16 bytes, so m doesn't have
               // to be 16-byte aligned,
  // 8-byte alignment is good enough here, which we'll get automatically
};

struct TestNew3 {
  Vector2f m;  // good: m's size isn't a multiple of 16 bytes, so m doesn't have
               // to be 16-byte aligned
};

struct TestNew4 {
  EIGEN_MAKE_ALIGNED_OPERATOR_NEW
  Vector2d m;
  float f;  // make the struct have sizeof%16!=0 to make it a little more tricky
            // when we allow an array of 2 such objects
};

struct TestNew5 {
  EIGEN_MAKE_ALIGNED_OPERATOR_NEW
  float f;  // try the f at first -- the EIGEN_ALIGN_MAX attribute of m should
            // make that still work
  Matrix4f m;
};

struct TestNew6 {
  Matrix<float, 2, 2, DontAlign> m;  // good: no alignment requested
  float f;
};

template <bool Align>
struct Depends {
  EIGEN_MAKE_ALIGNED_OPERATOR_NEW_IF(Align)
  Vector2d m;
  float f;
};

template <typename T>
void check_unalignedassert_good() {
  T *x, *y;
  x = new T;
  delete x;
  y = new T[2];
  delete[] y;
}

#if EIGEN_MAX_STATIC_ALIGN_BYTES > 0
template <typename T>
void construct_at_boundary(int boundary) {
  char buf[sizeof(T) + 256];
  size_t _buf = reinterpret_cast<internal::UIntPtr>(buf);
  _buf += (EIGEN_MAX_ALIGN_BYTES -
           (_buf % EIGEN_MAX_ALIGN_BYTES));  // make 16/32/...-byte aligned
  _buf += boundary;                          // make exact boundary-aligned
  T *x = ::new (reinterpret_cast<void *>(_buf)) T;
  x[0].setZero();  // just in order to silence warnings
  x->~T();
}
#endif

void unalignedassert() {
#if EIGEN_MAX_STATIC_ALIGN_BYTES > 0
  construct_at_boundary<Vector2f>(4);
  construct_at_boundary<Vector3f>(4);
  construct_at_boundary<Vector4f>(16);
  construct_at_boundary<Vector6f>(4);
  construct_at_boundary<Vector8f>(EIGEN_MAX_ALIGN_BYTES);
  construct_at_boundary<Vector12f>(16);
  construct_at_boundary<Matrix2f>(16);
  construct_at_boundary<Matrix3f>(4);
  construct_at_boundary<Matrix4f>(EIGEN_MAX_ALIGN_BYTES);

  construct_at_boundary<Vector2d>(16);
  construct_at_boundary<Vector3d>(4);
  construct_at_boundary<Vector4d>(EIGEN_MAX_ALIGN_BYTES);
  construct_at_boundary<Vector5d>(4);
  construct_at_boundary<Vector6d>(16);
  construct_at_boundary<Vector7d>(4);
  construct_at_boundary<Vector8d>(EIGEN_MAX_ALIGN_BYTES);
  construct_at_boundary<Vector9d>(4);
  construct_at_boundary<Vector10d>(16);
  construct_at_boundary<Vector12d>(EIGEN_MAX_ALIGN_BYTES);
  construct_at_boundary<Matrix2d>(EIGEN_MAX_ALIGN_BYTES);
  construct_at_boundary<Matrix3d>(4);
  construct_at_boundary<Matrix4d>(EIGEN_MAX_ALIGN_BYTES);

  construct_at_boundary<Vector2cf>(16);
  construct_at_boundary<Vector3cf>(4);
  construct_at_boundary<Vector2cd>(EIGEN_MAX_ALIGN_BYTES);
  construct_at_boundary<Vector3cd>(16);
#endif

  check_unalignedassert_good<TestNew1>();
  check_unalignedassert_good<TestNew2>();
  check_unalignedassert_good<TestNew3>();

  check_unalignedassert_good<TestNew4>();
  check_unalignedassert_good<TestNew5>();
  check_unalignedassert_good<TestNew6>();
  check_unalignedassert_good<Depends<true> >();

#if EIGEN_MAX_STATIC_ALIGN_BYTES > 0
  if (EIGEN_MAX_ALIGN_BYTES >= 16) {
    VERIFY_RAISES_ASSERT(construct_at_boundary<Vector4f>(8));
    VERIFY_RAISES_ASSERT(construct_at_boundary<Vector8f>(8));
    VERIFY_RAISES_ASSERT(construct_at_boundary<Vector12f>(8));
    VERIFY_RAISES_ASSERT(construct_at_boundary<Vector2d>(8));
    VERIFY_RAISES_ASSERT(construct_at_boundary<Vector4d>(8));
    VERIFY_RAISES_ASSERT(construct_at_boundary<Vector6d>(8));
    VERIFY_RAISES_ASSERT(construct_at_boundary<Vector8d>(8));
    VERIFY_RAISES_ASSERT(construct_at_boundary<Vector10d>(8));
    VERIFY_RAISES_ASSERT(construct_at_boundary<Vector12d>(8));
    // Complexes are disabled because the compiler might aggressively vectorize
    // the initialization of complex coeffs to 0 before we can check for
    // alignedness
    // VERIFY_RAISES_ASSERT(construct_at_boundary<Vector2cf>(8));
    VERIFY_RAISES_ASSERT(construct_at_boundary<Vector4i>(8));
  }
  for (int b = 8; b < EIGEN_MAX_ALIGN_BYTES; b += 8) {
    if (b < 32) VERIFY_RAISES_ASSERT(construct_at_boundary<Vector8f>(b));
    if (b < 64) VERIFY_RAISES_ASSERT(construct_at_boundary<Matrix4f>(b));
    if (b < 32) VERIFY_RAISES_ASSERT(construct_at_boundary<Vector4d>(b));
    if (b < 32) VERIFY_RAISES_ASSERT(construct_at_boundary<Matrix2d>(b));
    if (b < 128) VERIFY_RAISES_ASSERT(construct_at_boundary<Matrix4d>(b));
    // if(b<32)  VERIFY_RAISES_ASSERT(construct_at_boundary<Vector2cd>(b));
  }
#endif
}

EIGEN_DECLARE_TEST(unalignedassert) { CALL_SUBTEST(unalignedassert()); }