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Data Structures
struct	sese_s
struct	ifsese_s
struct	rename_map_elt_s
struct	gimple_bb

Macros
#define	SESE_ENTRY(S) (S->entry)
#define	SESE_ENTRY_BB(S) (S->entry->dest)
#define	SESE_EXIT(S) (S->exit)
#define	SESE_EXIT_BB(S) (S->exit->dest)
#define	SESE_PARAMS(S) (S->params)
#define	SESE_LOOPS(S) (S->loops)
#define	SESE_LOOP_NEST(S) (S->loop_nest)
#define	SESE_ADD_PARAMS(S) (S->add_params)
#define	GBB_BB(GBB) (GBB)->bb
#define	GBB_PBB(GBB) (GBB)->pbb
#define	GBB_DATA_REFS(GBB) (GBB)->data_refs
#define	GBB_CONDITIONS(GBB) (GBB)->conditions
#define	GBB_CONDITION_CASES(GBB) (GBB)->condition_cases

Typedefs
typedef struct sese_s *	sese
typedef struct ifsese_s *	ifsese
typedef struct rename_map_elt_s *	rename_map_elt
typedef struct gimple_bb *	gimple_bb_p

Functions
sese	new_sese (edge, edge)
void	free_sese (sese)
void	sese_insert_phis_for_liveouts (sese, basic_block, edge, edge)
void	build_sese_loop_nests (sese)
edge	copy_bb_and_scalar_dependences (basic_block, sese, edge, vec< tree >, bool *)
struct loop *	outermost_loop_in_sese (sese, basic_block)
tree	scalar_evolution_in_region (sese, loop_p, tree)
static bool	sese_contains_loop ()
static unsigned	sese_nb_params ()
static bool	bb_in_region ()
static bool	bb_in_sese_p ()
static bool	stmt_in_sese_p ()
static bool	defined_in_sese_p ()
static bool	loop_in_sese_p ()
static unsigned int	sese_loop_depth ()
static sese	split_region_for_bb ()
static basic_block	block_before_sese ()
void	if_region_set_false_region (ifsese, sese)
ifsese	move_sese_in_condition (sese)
edge	get_true_edge_from_guard_bb (basic_block)
edge	get_false_edge_from_guard_bb (basic_block)
void	set_ifsese_condition (ifsese, tree)
static edge	if_region_entry ()
static edge	if_region_exit ()
static basic_block	if_region_get_condition_block ()
hashval_t	rename_map_elt_info (const void *)
int	eq_rename_map_elts (const void , const void )
static rename_map_elt	new_rename_map_elt ()
static void	recompute_all_dominators ()
static struct loop *	gbb_loop ()
static loop_p	gbb_loop_at_index ()
static int	nb_common_loops ()
static bool	scev_analyzable_p ()

Macro Definition Documentation

#define GBB_BB ( GBB ) (GBB)->bb

Referenced by number_of_write_pdrs().

#define GBB_CONDITION_CASES ( GBB ) (GBB)->condition_cases

#define GBB_CONDITIONS ( GBB ) (GBB)->conditions

#define GBB_DATA_REFS ( GBB ) (GBB)->data_refs

#define GBB_PBB ( GBB ) (GBB)->pbb

#define SESE_ADD_PARAMS ( S ) (S->add_params)

#define SESE_ENTRY ( S ) (S->entry)

Referenced by create_if_region_on_edge().

#define SESE_ENTRY_BB ( S ) (S->entry->dest)

Referenced by loop_in_sese_p().

#define SESE_EXIT ( S ) (S->exit)

Referenced by loop_in_sese_p().

#define SESE_EXIT_BB ( S ) (S->exit->dest)

#define SESE_LOOP_NEST ( S ) (S->loop_nest)

Referenced by eq_rename_map_elts().

#define SESE_LOOPS ( S ) (S->loops)

Referenced by eq_rename_map_elts().

#define SESE_PARAMS ( S ) (S->params)

Referenced by sese_contains_loop().

Typedef Documentation

typedef struct gimple_bb * gimple_bb_p

typedef struct ifsese_s * ifsese

A single entry single exit specialized for conditions.

typedef struct rename_map_elt_s * rename_map_elt

Structure containing the mapping between the old names and the new names used after block copy in the new loop context.

typedef struct sese_s * sese

Single entry single exit control flow regions. Copyright (C) 2008-2013 Free Software Foundation, Inc. Contributed by Jan Sjodin jan.s.nosp@m.jodi.nosp@m.n@amd.nosp@m..com and Sebastian Pop sebas.nosp@m.tian.nosp@m..pop@.nosp@m.amd..nosp@m.com.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version.

GCC is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with GCC; see the file COPYING3. If not see http://www.gnu.org/licenses/. A Single Entry, Single Exit region is a part of the CFG delimited by two edges.

Function Documentation

static bool bb_in_region ( )

inlinestatic

Checks whether BB is contained in the region delimited by ENTRY and EXIT blocks.

static bool bb_in_sese_p ( )

inlinestatic

Checks whether BB is contained in the region delimited by ENTRY and EXIT blocks.

References gimple_bb().

Referenced by sese_record_loop().

static basic_block block_before_sese ( )

inlinestatic

Returns the block preceding the entry of a SESE.

Referenced by move_sese_in_condition().

void build_sese_loop_nests ( sese )

edge copy_bb_and_scalar_dependences	(	basic_block	bb,
		sese	region,
		edge	next_e,
		vec< tree >	iv_map,
		bool *	gloog_error
	)

Copies BB and includes in the copied BB all the statements that can be reached following the use-def chains from the memory accesses, and returns the next edge following this new block. GLOOG_ERROR is set when the code generation cannot continue.

static bool defined_in_sese_p ( )

inlinestatic

Returns true when NAME is defined in REGION.

Referenced by move_sese_in_condition().

int eq_rename_map_elts	(	const void *	,
		const void *
	)

void free_sese ( sese )

static struct loop* gbb_loop ( )

staticread

Return the innermost loop that contains the basic block GBB.

References find_common_loop(), and sese_loop_depth().

static loop_p gbb_loop_at_index ( )

inlinestatic

Returns the gimple loop, that corresponds to the loop_iterator_INDEX. If there is no corresponding gimple loop, we return NULL.

References TREE_TYPE.

edge get_false_edge_from_guard_bb ( basic_block )

edge get_true_edge_from_guard_bb ( basic_block )

static edge if_region_entry ( )

inlinestatic

References rename_map_elt_s::expr, and rename_map_elt_s::old_name.

static edge if_region_exit ( )

inlinestatic

static basic_block if_region_get_condition_block ( )

inlinestatic

References rename_map_elt_s::expr, and rename_map_elt_s::old_name.

void if_region_set_false_region	(	ifsese	,
		sese
	)

static bool loop_in_sese_p ( )

inlinestatic

Returns true when LOOP is in REGION.

References gcc_assert, loop_outer(), SESE_ENTRY_BB, and SESE_EXIT.

Referenced by move_sese_in_condition().

ifsese move_sese_in_condition ( sese )

static int nb_common_loops ( )

inlinestatic

The number of common loops in REGION for GBB1 and GBB2.

static rename_map_elt new_rename_map_elt ( )

inlinestatic

Constructs a new SCEV_INFO_STR structure for VAR and INSTANTIATED_BELOW.

References gimple_bb::bb, and gimple_bb::pbb.

sese new_sese	(	edge	,
		edge
	)

struct loop* outermost_loop_in_sese	(	sese	,
		basic_block
	)

read

static void recompute_all_dominators ( )

inlinestatic

Free and compute again all the dominators information.

hashval_t rename_map_elt_info ( const void * )

tree scalar_evolution_in_region	(	sese	,
		loop_p	,
		tree
	)

static bool scev_analyzable_p ( )

inlinestatic

Return true when DEF can be analyzed in REGION by the scalar evolution analyzer.

When Graphite generates code for a scev, the code generator expresses the scev in function of a single induction variable. This is unsafe for floating point computations, as it may replace a floating point sum reduction with a multiplication. The following test returns false for non integer types to avoid such problems.

static bool sese_contains_loop ( )

inlinestatic

Check that SESE contains LOOP.

References SESE_PARAMS.

Referenced by eq_rename_map_elts().

void sese_insert_phis_for_liveouts	(	sese	region,
		basic_block	bb,
		edge	false_e,
		edge	true_e
	)

Insert in the block BB phi nodes for variables defined in REGION and used outside the REGION. The code generation moves REGION in the else clause of an "if (1)" and generates code in the then clause that is at this point empty:

| if (1) | empty; | else | REGION;

References edge_def::flags, and FOR_EACH_EDGE.

static unsigned int sese_loop_depth ( )

inlinestatic

Returns the loop depth of LOOP in REGION. The loop depth is the same as the normal loop depth, but limited by a region.

Example:

loop_0 loop_1 { S0 <- region start S1

loop_2 S2

S3 <- region end }

loop_0 does not exist in the region -> invalid loop_1 exists, but is not completely contained in the region -> depth 0 loop_2 is completely contained -> depth 1

Referenced by gbb_loop().

static unsigned sese_nb_params ( )

inlinestatic

The number of parameters in REGION.

void set_ifsese_condition	(	ifsese	,
		tree
	)

static sese split_region_for_bb ( )

inlinestatic

Splits BB to make a single entry single exit region.

static bool stmt_in_sese_p ( )

inlinestatic

Returns true when STMT is defined in REGION.

Data Structures

Macros

Typedefs

Functions

Macro Definition Documentation

Typedef Documentation

Function Documentation