/usr/include/viennacl/scheduler/execute_axbx.hpp is in libviennacl-dev 1.5.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#define VIENNACL_SCHEDULER_EXECUTE_AXBX_HPP
/* =========================================================================
Copyright (c) 2010-2014, Institute for Microelectronics,
Institute for Analysis and Scientific Computing,
TU Wien.
Portions of this software are copyright by UChicago Argonne, LLC.
-----------------
ViennaCL - The Vienna Computing Library
-----------------
Project Head: Karl Rupp rupp@iue.tuwien.ac.at
(A list of authors and contributors can be found in the PDF manual)
License: MIT (X11), see file LICENSE in the base directory
============================================================================= */
/** @file viennacl/scheduler/execute_axbx.hpp
@brief Provides the datastructures for dealing with statements of the type x = (y) +- (z)
*/
#include "viennacl/forwards.h"
#include "viennacl/scheduler/forwards.h"
#include "viennacl/scheduler/execute_scalar_assign.hpp"
#include "viennacl/scheduler/execute_generic_dispatcher.hpp"
namespace viennacl
{
namespace scheduler
{
namespace detail
{
/** @brief Deals with x = (y) +- (z) where y and z are either data objects or expressions */
inline void execute_axbx(statement const & s, statement_node const & root_node)
{
statement::container_type const & expr = s.array();
statement_node const & leaf = expr[root_node.rhs.node_index];
if (leaf.op.type == OPERATION_BINARY_ADD_TYPE || leaf.op.type == OPERATION_BINARY_SUB_TYPE) // x = (y) +- (z) where y and z are either data objects or expressions
{
bool flip_sign_z = (leaf.op.type == OPERATION_BINARY_SUB_TYPE);
if ( leaf.lhs.type_family != COMPOSITE_OPERATION_FAMILY
&& leaf.rhs.type_family != COMPOSITE_OPERATION_FAMILY)
{
lhs_rhs_element u = root_node.lhs;
lhs_rhs_element v = leaf.lhs;
lhs_rhs_element w = leaf.rhs;
switch (root_node.op.type)
{
case OPERATION_BINARY_ASSIGN_TYPE:
detail::axbx(u,
v, 1.0, 1, false, false,
w, 1.0, 1, false, flip_sign_z);
break;
case OPERATION_BINARY_INPLACE_ADD_TYPE:
detail::axbx_x(u,
v, 1.0, 1, false, false,
w, 1.0, 1, false, flip_sign_z);
break;
case OPERATION_BINARY_INPLACE_SUB_TYPE:
detail::axbx_x(u,
v, 1.0, 1, false, true,
w, 1.0, 1, false, !flip_sign_z);
break;
default:
throw statement_not_supported_exception("Unsupported binary operator for operation in root note (should be =, +=, or -=)");
}
}
else if ( leaf.lhs.type_family == COMPOSITE_OPERATION_FAMILY
&& leaf.rhs.type_family != COMPOSITE_OPERATION_FAMILY) // x = (y) + z, y being a subtree itself, z being a scalar, vector, or matrix
{
statement_node const & y = expr[leaf.lhs.node_index];
if (y.op.type_family == OPERATION_BINARY_TYPE_FAMILY)
{
// y might be 'v * alpha' or 'v / alpha' with {scalar|vector|matrix} v
if ( (y.op.type == OPERATION_BINARY_MULT_TYPE || y.op.type == OPERATION_BINARY_DIV_TYPE)
&& y.lhs.type_family != COMPOSITE_OPERATION_FAMILY
&& y.rhs.type_family == SCALAR_TYPE_FAMILY)
{
lhs_rhs_element u = root_node.lhs;
lhs_rhs_element v = y.lhs;
lhs_rhs_element w = leaf.rhs;
lhs_rhs_element alpha = y.rhs;
bool is_division = (y.op.type == OPERATION_BINARY_DIV_TYPE);
switch (root_node.op.type)
{
case OPERATION_BINARY_ASSIGN_TYPE:
detail::axbx(u,
v, alpha, 1, is_division, false,
w, 1.0, 1, false, flip_sign_z);
break;
case OPERATION_BINARY_INPLACE_ADD_TYPE:
detail::axbx_x(u,
v, alpha, 1, is_division, false,
w, 1.0, 1, false, flip_sign_z);
break;
case OPERATION_BINARY_INPLACE_SUB_TYPE:
detail::axbx_x(u,
v, alpha, 1, is_division, true,
w, 1.0, 1, false, !flip_sign_z);
break;
default:
throw statement_not_supported_exception("Unsupported binary operator for vector operation in root note (should be =, +=, or -=)");
}
}
else // no built-in kernel, we use a temporary.
{
statement_node new_root_y;
detail::new_element(new_root_y.lhs, root_node.lhs);
new_root_y.op.type_family = OPERATION_BINARY_TYPE_FAMILY;
new_root_y.op.type = OPERATION_BINARY_ASSIGN_TYPE;
new_root_y.rhs.type_family = COMPOSITE_OPERATION_FAMILY;
new_root_y.rhs.subtype = INVALID_SUBTYPE;
new_root_y.rhs.numeric_type = INVALID_NUMERIC_TYPE;
new_root_y.rhs.node_index = leaf.lhs.node_index;
// work on subexpression:
// TODO: Catch exception, free temporary, then rethrow
execute_composite(s, new_root_y);
// now add:
lhs_rhs_element u = root_node.lhs;
lhs_rhs_element v = new_root_y.lhs;
lhs_rhs_element w = leaf.rhs;
switch (root_node.op.type)
{
case OPERATION_BINARY_ASSIGN_TYPE:
detail::axbx(u,
v, 1.0, 1, false, false,
w, 1.0, 1, false, flip_sign_z);
break;
case OPERATION_BINARY_INPLACE_ADD_TYPE:
detail::axbx_x(u,
v, 1.0, 1, false, false,
w, 1.0, 1, false, flip_sign_z);
break;
case OPERATION_BINARY_INPLACE_SUB_TYPE:
detail::axbx_x(u,
v, 1.0, 1, false, true,
w, 1.0, 1, false, !flip_sign_z);
break;
default:
throw statement_not_supported_exception("Unsupported binary operator for vector operation in root note (should be =, +=, or -=)");
}
detail::delete_element(new_root_y.lhs);
}
}
else
throw statement_not_supported_exception("Cannot deal with unary operations on vectors");
}
else if ( leaf.lhs.type_family != COMPOSITE_OPERATION_FAMILY
&& leaf.rhs.type_family == COMPOSITE_OPERATION_FAMILY) // x = y + (z), y being vector, z being a subtree itself
{
statement_node const & z = expr[leaf.rhs.node_index];
if (z.op.type_family == OPERATION_BINARY_TYPE_FAMILY)
{
// z might be 'v * alpha' or 'v / alpha' with vector v
if ( (z.op.type == OPERATION_BINARY_MULT_TYPE || z.op.type == OPERATION_BINARY_DIV_TYPE)
&& z.lhs.type_family != COMPOSITE_OPERATION_FAMILY
&& z.rhs.type_family == SCALAR_TYPE_FAMILY)
{
lhs_rhs_element u = root_node.lhs;
lhs_rhs_element v = leaf.lhs;
lhs_rhs_element w = z.lhs;
lhs_rhs_element beta = z.rhs;
bool is_division = (z.op.type == OPERATION_BINARY_DIV_TYPE);
switch (root_node.op.type)
{
case OPERATION_BINARY_ASSIGN_TYPE:
detail::axbx(u,
v, 1.0, 1, false, false,
w, beta, 1, is_division, flip_sign_z);
break;
case OPERATION_BINARY_INPLACE_ADD_TYPE:
detail::axbx_x(u,
v, 1.0, 1, false, false,
w, beta, 1, is_division, flip_sign_z);
break;
case OPERATION_BINARY_INPLACE_SUB_TYPE:
detail::axbx_x(u,
v, 1.0, 1, false, true,
w, beta, 1, is_division, !flip_sign_z);
break;
default:
throw statement_not_supported_exception("Unsupported binary operator for vector operation in root note (should be =, +=, or -=)");
}
}
else // no built-in kernel, we use a temporary.
{
statement_node new_root_z;
detail::new_element(new_root_z.lhs, root_node.lhs);
new_root_z.op.type_family = OPERATION_BINARY_TYPE_FAMILY;
new_root_z.op.type = OPERATION_BINARY_ASSIGN_TYPE;
new_root_z.rhs.type_family = COMPOSITE_OPERATION_FAMILY;
new_root_z.rhs.subtype = INVALID_SUBTYPE;
new_root_z.rhs.numeric_type = INVALID_NUMERIC_TYPE;
new_root_z.rhs.node_index = leaf.rhs.node_index;
// work on subexpression:
// TODO: Catch exception, free temporary, then rethrow
execute_composite(s, new_root_z);
// now add:
lhs_rhs_element u = root_node.lhs;
lhs_rhs_element v = leaf.lhs;
lhs_rhs_element w = new_root_z.lhs;
switch (root_node.op.type)
{
case OPERATION_BINARY_ASSIGN_TYPE:
detail::axbx(u,
v, 1.0, 1, false, false,
w, 1.0, 1, false, flip_sign_z);
break;
case OPERATION_BINARY_INPLACE_ADD_TYPE:
detail::axbx_x(u,
v, 1.0, 1, false, false,
w, 1.0, 1, false, flip_sign_z);
break;
case OPERATION_BINARY_INPLACE_SUB_TYPE:
detail::axbx_x(u,
v, 1.0, 1, false, true,
w, 1.0, 1, false, !flip_sign_z);
break;
default:
throw statement_not_supported_exception("Unsupported binary operator for vector operation in root note (should be =, +=, or -=)");
}
detail::delete_element(new_root_z.lhs);
}
}
else
throw statement_not_supported_exception("Cannot deal with unary operations on vectors");
}
else if ( leaf.lhs.type_family == COMPOSITE_OPERATION_FAMILY
&& leaf.rhs.type_family == COMPOSITE_OPERATION_FAMILY) // x = (y) + (z), y and z being subtrees
{
statement_node const & y = expr[leaf.lhs.node_index];
statement_node const & z = expr[leaf.rhs.node_index];
if ( y.op.type_family == OPERATION_BINARY_TYPE_FAMILY
&& z.op.type_family == OPERATION_BINARY_TYPE_FAMILY)
{
// z might be 'v * alpha' or 'v / alpha' with vector v
if ( (y.op.type == OPERATION_BINARY_MULT_TYPE || y.op.type == OPERATION_BINARY_DIV_TYPE)
&& y.lhs.type_family != COMPOSITE_OPERATION_FAMILY
&& y.rhs.type_family == SCALAR_TYPE_FAMILY
&& (z.op.type == OPERATION_BINARY_MULT_TYPE || z.op.type == OPERATION_BINARY_DIV_TYPE)
&& z.lhs.type_family != COMPOSITE_OPERATION_FAMILY
&& z.rhs.type_family == SCALAR_TYPE_FAMILY)
{
lhs_rhs_element u = root_node.lhs;
lhs_rhs_element v = y.lhs;
lhs_rhs_element w = z.lhs;
lhs_rhs_element alpha = y.rhs;
lhs_rhs_element beta = z.rhs;
bool is_division_y = (y.op.type == OPERATION_BINARY_DIV_TYPE);
bool is_division_z = (z.op.type == OPERATION_BINARY_DIV_TYPE);
switch (root_node.op.type)
{
case OPERATION_BINARY_ASSIGN_TYPE:
detail::axbx(u,
v, alpha, 1, is_division_y, false,
w, beta, 1, is_division_z, flip_sign_z);
break;
case OPERATION_BINARY_INPLACE_ADD_TYPE:
detail::axbx_x(u,
v, alpha, 1, is_division_y, false,
w, beta, 1, is_division_z, flip_sign_z);
break;
case OPERATION_BINARY_INPLACE_SUB_TYPE:
detail::axbx_x(u,
v, alpha, 1, is_division_y, true,
w, beta, 1, is_division_z, !flip_sign_z);
break;
default:
throw statement_not_supported_exception("Unsupported binary operator for vector operation in root note (should be =, +=, or -=)");
}
}
else // no built-in kernel, we use a temporary.
{
statement_node new_root_y;
detail::new_element(new_root_y.lhs, root_node.lhs);
new_root_y.op.type_family = OPERATION_BINARY_TYPE_FAMILY;
new_root_y.op.type = OPERATION_BINARY_ASSIGN_TYPE;
new_root_y.rhs.type_family = COMPOSITE_OPERATION_FAMILY;
new_root_y.rhs.subtype = INVALID_SUBTYPE;
new_root_y.rhs.numeric_type = INVALID_NUMERIC_TYPE;
new_root_y.rhs.node_index = leaf.lhs.node_index;
// work on subexpression:
// TODO: Catch exception, free temporary, then rethrow
execute_composite(s, new_root_y);
statement_node new_root_z;
detail::new_element(new_root_z.lhs, root_node.lhs);
new_root_z.op.type_family = OPERATION_BINARY_TYPE_FAMILY;
new_root_z.op.type = OPERATION_BINARY_ASSIGN_TYPE;
new_root_z.rhs.type_family = COMPOSITE_OPERATION_FAMILY;
new_root_z.rhs.subtype = INVALID_SUBTYPE;
new_root_z.rhs.numeric_type = INVALID_NUMERIC_TYPE;
new_root_z.rhs.node_index = leaf.rhs.node_index;
// work on subexpression:
// TODO: Catch exception, free temporaries, then rethrow
execute_composite(s, new_root_z);
// now add:
lhs_rhs_element u = root_node.lhs;
lhs_rhs_element v = new_root_y.lhs;
lhs_rhs_element w = new_root_z.lhs;
switch (root_node.op.type)
{
case OPERATION_BINARY_ASSIGN_TYPE:
detail::axbx(u,
v, 1.0, 1, false, false,
w, 1.0, 1, false, flip_sign_z);
break;
case OPERATION_BINARY_INPLACE_ADD_TYPE:
detail::axbx_x(u,
v, 1.0, 1, false, false,
w, 1.0, 1, false, flip_sign_z);
break;
case OPERATION_BINARY_INPLACE_SUB_TYPE:
detail::axbx_x(u,
v, 1.0, 1, false, true,
w, 1.0, 1, false, !flip_sign_z);
break;
default:
throw statement_not_supported_exception("Unsupported binary operator for vector operation in root note (should be =, +=, or -=)");
}
detail::delete_element(new_root_y.lhs);
detail::delete_element(new_root_z.lhs);
}
}
else
throw statement_not_supported_exception("Cannot deal with unary operations on vectors");
}
else
throw statement_not_supported_exception("Cannot deal with addition of vectors");
}
else
throw statement_not_supported_exception("Unsupported binary operator for vector operations");
}
} // namespace detail
} // namespace scheduler
} // namespace viennacl
#endif
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