Functions
void	init_ssanames ()
void	fini_ssanames ()
void	ssanames_print_statistics ()
tree	make_ssa_name_fn ()
void	release_ssa_name ()
bool	get_ptr_info_alignment (struct ptr_info_def pi, unsigned int alignp, unsigned int *misalignp)
void	mark_ptr_info_alignment_unknown ()
void	set_ptr_info_alignment (struct ptr_info_def *pi, unsigned int align, unsigned int misalign)
void	adjust_ptr_info_misalignment (struct ptr_info_def *pi, unsigned int increment)
struct ptr_info_def *	get_ptr_info ()
tree	copy_ssa_name_fn ()
void	duplicate_ssa_name_ptr_info ()
tree	duplicate_ssa_name_fn ()
void	release_defs ()
void	replace_ssa_name_symbol ()
static unsigned int	release_dead_ssa_names ()
gimple_opt_pass *	make_pass_release_ssa_names ()

Variables
unsigned int	ssa_name_nodes_reused
unsigned int	ssa_name_nodes_created

Function Documentation

void adjust_ptr_info_misalignment	(	struct ptr_info_def *	pi,
		unsigned int	increment
	)

If pointer described by PI has known alignment, increase its known
   misalignment by INCREMENT modulo its current alignment.

References ptr_info_def::align, and ptr_info_def::misalign.

Referenced by copy_ref_info().

tree copy_ssa_name_fn ( )

Creates a new SSA name using the template NAME tobe defined by
   statement STMT in function FN.

References make_ssa_name_fn().

tree duplicate_ssa_name_fn ( )

Creates a duplicate of a ssa name NAME tobe defined by statement STMT
   in function FN.

References copy_ssa_name_fn(), and duplicate_ssa_name_ptr_info().

void duplicate_ssa_name_ptr_info ( )

Creates a duplicate of the ptr_info_def at PTR_INFO for use by
   the SSA name NAME.

void fini_ssanames ( void )

Finalize management of SSA_NAMEs.

References cfun, and vec_free().

Referenced by delete_tree_ssa().

struct ptr_info_def* get_ptr_info ( )

read

Return the alias information associated with pointer T.  It creates a
   new instance if none existed.

References mark_ptr_info_alignment_unknown(), ptr_info_def::pt, and pt_solution_reset().

bool get_ptr_info_alignment	(	struct ptr_info_def *	pi,
		unsigned int *	alignp,
		unsigned int *	misalignp
	)

If the alignment of the pointer described by PI is known, return true and
   store the alignment and the deviation from it into *ALIGNP and *MISALIGNP
   respectively.  Otherwise return false.

References ptr_info_def::align, and ptr_info_def::misalign.

Referenced by copy_ref_info(), dump_gimple_phi(), get_pointer_alignment_1(), and pp_gimple_stmt_1().

void init_ssanames ( )

Initialize management of SSA_NAMEs to default SIZE.  If SIZE is
   zero use default.

References vec_alloc().

gimple_opt_pass* make_pass_release_ssa_names ( )

tree make_ssa_name_fn ( )

Return an SSA_NAME node for variable VAR defined in statement STMT
   in function FN.  STMT may be an empty statement for artificial
   references (e.g., default definitions created when a variable is
   used without a preceding definition).

References is_gimple_reg_type(), ssa_use_operand_d::loc, ssa_use_operand_d::next, ssa_use_operand_d::prev, ssa_use_operand_d::ssa_name, ssa_name_nodes_created, ssa_name_nodes_reused, ssa_use_operand_d::use, vec_safe_is_empty(), and vec_safe_push().

void mark_ptr_info_alignment_unknown ( )

State that the pointer described by PI has unknown alignment.

References ptr_info_def::align, and ptr_info_def::misalign.

static unsigned int release_dead_ssa_names ( )

static

Return SSA names that are unused to GGC memory and compact the SSA
   version namespace.  This is used to keep footprint of compiler during
   interprocedural optimization.

References cfun, dump_file, function::gimple_df, gimple_df::ssa_names, statistics_counter_event(), vec_free(), and vec_safe_length().

void release_defs ( )

Release all the SSA_NAMEs created by STMT.

References cfun, gimple_in_ssa_p(), and release_ssa_name().

void release_ssa_name ( )

We no longer need the SSA_NAME expression VAR, release it so that
   it may be reused.

   Note it is assumed that no calls to make_ssa_name will be made
   until all uses of the ssa name are released and that the only
   use of the SSA_NAME expression is to check its SSA_NAME_VAR.  All
   other fields must be assumed clobbered.

References cfun, delink_imm_use(), insert_debug_temp_for_var_def(), ssa_use_operand_d::loc, memset(), name_registered_for_update_p(), ssa_use_operand_d::next, ssa_use_operand_d::prev, release_ssa_name_after_update_ssa(), ssa_use_operand_d::ssa_name, tree_size(), vec_safe_push(), and verify_imm_links().

void replace_ssa_name_symbol ( )

Replace the symbol associated with SSA_NAME with SYM.

void set_ptr_info_alignment	(	struct ptr_info_def *	pi,
		unsigned int	align,
		unsigned int	misalign
	)

Store the the power-of-two byte alignment and the deviation from that
   alignment of pointer described by PI to ALIOGN and MISALIGN
   respectively.

References ptr_info_def::align, and ptr_info_def::misalign.

Referenced by ccp_finalize(), create_array_ref(), vectorizable_load(), and vectorizable_store().

void ssanames_print_statistics ( void )

Dump some simple statistics regarding the re-use of SSA_NAME nodes.

References ssa_name_nodes_created, and ssa_name_nodes_reused.

Referenced by dump_tree_statistics().

Variable Documentation

unsigned int ssa_name_nodes_created

Referenced by make_ssa_name_fn(), and ssanames_print_statistics().

unsigned int ssa_name_nodes_reused

Referenced by make_ssa_name_fn(), and ssanames_print_statistics().

Functions

Variables

Function Documentation

Variable Documentation