t_pack_molecule Class Reference

Represents a grouping of atom blocks that match a pack_pattern, these groups are intended to be placed as a single unit during packing. More...

#include <vpr_types.h>

Collaboration diagram for t_pack_molecule:

Public Member Functions
bool	is_chain () const

Data Fields
bool	valid
float	base_gain
enum e_pack_pattern_molecule_type	type
t_pack_patterns *	pack_pattern
int	root
int	num_blocks
std::vector< AtomBlockId >	atom_block_ids
std::shared_ptr< t_chain_info >	chain_info
t_pack_molecule *	next

Detailed Description

Represents a grouping of atom blocks that match a pack_pattern, these groups are intended to be placed as a single unit during packing.

Store in linked list

A chain is a special type of pack pattern. A chain can extend across multiple logic blocks. Must segment the chain to fit in a logic block by identifying the actual atom that forms the root of the new chain. Assumes that the root of a chain is the primitive that starts the chain or is driven from outside the logic block

Data members:

 type           : either a single atom or more atoms representing a packing pattern
 pack_pattern   : if not a single atom, this is the pack pattern representing this molecule
 atom_block_ids : [0..num_blocks-1] IDs of atom blocks that implements this molecule, indexed by
                  t_pack_pattern_block->block_id
 chain_info     : if this is a molecule representing a chained pack pattern, this data structure will
                  hold the data shared between all molecules forming a chain together.
 valid          : whether the molecule is still valid for packing or not.
 num_blocks     : maximum number of atom blocks that can fit in this molecule
 root           : index of the pack_pattern->root_block in the atom_blocks_ids. root_block_id = atom_block_ids[root]
 base_gain      : intrinsic "goodness" score for molecule independent of rest of netlist
 next           : next molecule in the linked list

Member Function Documentation

is_chain()

bool t_pack_molecule::is_chain ( ) const

inline

Field Documentation

atom_block_ids

std::vector<AtomBlockId> t_pack_molecule::atom_block_ids

base_gain

float t_pack_molecule::base_gain

chain_info

std::shared_ptr<t_chain_info> t_pack_molecule::chain_info

next

t_pack_molecule* t_pack_molecule::next

num_blocks

int t_pack_molecule::num_blocks

pack_pattern

t_pack_patterns* t_pack_molecule::pack_pattern

root

int t_pack_molecule::root

type

enum e_pack_pattern_molecule_type t_pack_molecule::type

valid

bool t_pack_molecule::valid

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The documentation for this class was generated from the following file:

• vpr_types.h