/* Gimple Represented as Polyhedra.
- Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc.
+ Copyright (C) 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
Contributed by Sebastian Pop <sebastian.pop@inria.fr>.
This file is part of GCC.
#include "tree-data-ref.h"
+int ref_nb_loops (data_reference_p);
+
typedef struct graphite_bb *graphite_bb_p;
DEF_VEC_P(graphite_bb_p);
DEF_VEC_ALLOC_P (graphite_bb_p, heap);
return GBB_BB (gbb)->loop_father;
}
+int nb_loops_around_gb (graphite_bb_p);
+
/* Calculate the number of loops around GB in the current SCOP. Only
works if GBB_DOMAIN is built. */
by two edges. */
typedef struct sese
{
+ /* Single ENTRY and single EXIT from the SESE region. */
edge entry, exit;
+
+ /* REGION_BASIC_BLOCKS contains the set of all the basic blocks
+ belonging to the SESE region. */
struct pointer_set_t *region_basic_blocks;
+
+ /* An SSA_NAME version is flagged in the LIVEOUT bitmap if the
+ SSA_NAME is defined inside and used outside the SESE region. */
+ bitmap liveout;
+
+ /* The overall number of SSA_NAME versions used to index LIVEIN. */
+ int num_ver;
+
+ /* For each SSA_NAME version VER in LIVEOUT, LIVEIN[VER] contains
+ the set of basic blocks indices that contain a use of VER. */
+ bitmap *livein;
} *sese;
#define SESE_ENTRY(S) (S->entry)
#define SESE_EXIT(S) (S->exit)
#define SESE_REGION_BBS(S) (S->region_basic_blocks)
+#define SESE_LIVEOUT(S) (S->liveout)
+#define SESE_LIVEIN(S) (S->livein)
+#define SESE_LIVEIN_VER(S, I) (S->livein[I])
+#define SESE_NUM_VER(S) (S->num_ver)
+
+extern sese new_sese (edge, edge);
+extern void free_sese (sese);
+extern void sese_build_livein_liveouts (sese);
/* A SCOP is a Static Control Part of the program, simple enough to be
represented in polyhedral form. */
/* A SCOP is defined as a SESE region. */
sese region;
- /* All the basic blocks in this scop. They have extra information
- attached to them, in the graphite_bb structure. */
+ /* All the basic blocks in this scop that contain memory references
+ and that will be represented as statements in the polyhedral
+ representation. */
VEC (graphite_bb_p, heap) *bbs;
- /* Set for a basic block index when it belongs to this SCOP. */
- bitmap bbs_b;
-
lambda_vector static_schedule;
/* Parameters used within the SCOP. */
can only add new params before generating the bb domains, otherwise they
become invalid. */
bool add_params;
+
+ /* LIVEOUT_RENAMES registers the rename mapping that has to be
+ applied after code generation. */
+ htab_t liveout_renames;
};
#define SCOP_BBS(S) S->bbs
-#define SCOP_BBS_B(S) S->bbs_b
#define SCOP_REGION(S) S->region
/* SCOP_ENTRY bb dominates all the bbs of the scop. SCOP_EXIT bb
post-dominates all the bbs of the scop. SCOP_EXIT potentially
#define SCOP_PROG(S) S->program
#define SCOP_LOOP2CLOOG_LOOP(S) S->loop2cloog_loop
#define SCOP_LOOPS_MAPPING(S) S->loops_mapping
+#define SCOP_LIVEOUT_RENAMES(S) S->liveout_renames
extern void debug_scop (scop_p, int);
extern void debug_scops (int);
return depth;
}
-/* Static inline function prototypes. */
-
-static inline unsigned scop_nb_params (scop_p scop);
-
-/* Returns true when BB is in SCOP. */
-
-static inline bool
-bb_in_scop_p (basic_block bb, scop_p scop)
-{
- return bitmap_bit_p (SCOP_BBS_B (scop), bb->index);
-}
-
-/* Returns true when LOOP is in SCOP. */
-
-static inline bool
-loop_in_scop_p (struct loop *loop, scop_p scop)
-{
- return (bb_in_scop_p (loop->header, scop)
- && bb_in_scop_p (loop->latch, scop));
-}
-
-/* Calculate the number of loops around LOOP in the SCOP. */
-
-static inline int
-nb_loops_around_loop_in_scop (struct loop *l, scop_p scop)
-{
- int d = 0;
-
- for (; loop_in_scop_p (l, scop); d++, l = loop_outer (l));
-
- return d;
-}
-
-/* Calculate the number of loops around GB in the current SCOP. */
-
-static inline int
-nb_loops_around_gb (graphite_bb_p gb)
-{
- return nb_loops_around_loop_in_scop (gbb_loop (gb), GBB_SCOP (gb));
-}
-
-/* Returns the dimensionality of an enclosing loop iteration domain
- with respect to enclosing SCoP for a given data reference REF. The
- returned dimensionality is homogeneous (depth of loop nest + number
- of SCoP parameters + const). */
-
-static inline int
-ref_nb_loops (data_reference_p ref)
-{
- loop_p loop = loop_containing_stmt (DR_STMT (ref));
- scop_p scop = DR_SCOP (ref);
-
- return nb_loops_around_loop_in_scop (loop, scop) + scop_nb_params (scop) + 2;
-}
-
#endif /* GCC_GRAPHITE_H */
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