#include <tree-ssa-live.h>

Data Fields
partition	var_partition
int *	partition_to_view
int *	view_to_partition
unsigned int	num_partitions
unsigned int	partition_size
int	num_basevars
int *	partition_to_base_index

Detailed Description

   Used to create the variable mapping when we go out of SSA form.

   Mapping from an ssa_name to a partition number is maintained, as well as
   partition number back to ssa_name.

   This data structure also supports "views", which work on a subset of all
   partitions.  This allows the coalescer to decide what partitions are
   interesting to it, and only work with those partitions.  Whenever the view
   is changed, the partition numbers change, but none of the partition groupings
   change. (ie, it is truly a view since it doesn't change anything)

   The final component of the data structure is the basevar map.  This provides
   a list of all the different base variables which occur in a partition view,
   and a unique index for each one. Routines are provided to quickly produce
   the base variable of a partition.

   Note that members of a partition MUST all have the same base variable.

Field Documentation

int _var_map::num_basevars

     Number of base variables in the base var list.

Referenced by var_map_base_fini().

unsigned int _var_map::num_partitions

     Current number of partitions in var_map based on the current view.

Referenced by calculate_live_on_exit(), and var_map_base_fini().

unsigned int _var_map::partition_size

     Original full partition size.

Referenced by var_map_base_fini().

int* _var_map::partition_to_base_index

     Map of partitions numbers to base variable table indexes.

Referenced by var_to_partition_to_var().

int* _var_map::partition_to_view

     Vector for managing partitions views.

Referenced by calculate_live_on_exit(), partition_to_var(), partition_view_fini(), var_map_base_fini(), and version_to_var().

partition _var_map::var_partition

     The partition manager of all variables.

Referenced by calculate_live_on_exit(), delete_var_map(), num_var_partitions(), partition_to_var(), var_map_base_fini(), and version_to_var().

int* _var_map::view_to_partition

Referenced by calculate_live_on_exit(), num_var_partitions(), partition_view_fini(), and var_map_base_fini().

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

tree-ssa-live.h

Data Fields

Detailed Description

Field Documentation