You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
#ifndef GCC_BASIC_BLOCK_H
#define GCC_BASIC_BLOCK_H
#include "hard-reg-set.h"
#include "predict.h"
#include "vec.h"
-#include "errors.h"
#include "function.h"
/* Head of register set linked list. */
};
typedef struct edge_def *edge;
-DEF_VEC_GC_P(edge);
+DEF_VEC_P(edge);
+DEF_VEC_ALLOC_P(edge,gc);
#define EDGE_FALLTHRU 1 /* 'Straight line' flow */
#define EDGE_ABNORMAL 2 /* Strange flow, like computed
struct loops;
/* Declared in tree-flow.h. */
-struct bb_ann_d;
+struct edge_prediction;
+struct rtl_bb_info;
/* A basic block is a sequence of instructions with only entry and
only one exit. If any one of the instructions are executed, they
/* Basic block information indexed by block number. */
struct basic_block_def GTY((chain_next ("%h.next_bb"), chain_prev ("%h.prev_bb")))
{
- /* The first and last insns of the block. */
- rtx head_;
- rtx end_;
-
/* Pointers to the first and last trees of the block. */
tree stmt_list;
/* The edges into and out of the block. */
- VEC(edge) *preds;
- VEC(edge) *succs;
-
- /* The registers that are live on entry to this block. */
- bitmap GTY ((skip (""))) global_live_at_start;
-
- /* The registers that are live on exit from this block. */
- bitmap GTY ((skip (""))) global_live_at_end;
+ VEC(edge,gc) *preds;
+ VEC(edge,gc) *succs;
/* Auxiliary info specific to a pass. */
PTR GTY ((skip (""))) aux;
/* The data used by basic block copying and reordering functions. */
struct reorder_block_def * rbi;
- /* Annotations used at the tree level. */
- struct bb_ann_d *tree_annotations;
+ union basic_block_il_dependent {
+ struct rtl_bb_info * GTY ((tag ("1"))) rtl;
+ } GTY ((desc ("((%1.flags & BB_RTL) != 0)"))) il;
+
+ /* Chain of PHI nodes for this block. */
+ tree phi_nodes;
+
+ /* A list of predictions. */
+ struct edge_prediction *predictions;
/* Expected number of executions: calculated in profile.c. */
gcov_type count;
/* Various flags. See BB_* below. */
int flags;
+};
+
+struct rtl_bb_info GTY(())
+{
+ /* The first and last insns of the block. */
+ rtx head_;
+ rtx end_;
- /* Which section block belongs in, when partitioning basic blocks. */
- int partition;
+ /* The registers that are live on entry to this block. */
+ bitmap GTY ((skip (""))) global_live_at_start;
+
+ /* The registers that are live on exit from this block. */
+ bitmap GTY ((skip (""))) global_live_at_end;
};
typedef struct basic_block_def *basic_block;
basic_block next;
- /* These pointers may be unreliable as the first is only used for
- debugging (and should probably be removed, and the second is only
- used by copying. The basic blocks pointed to may be removed and
- that leaves these pointers pointing to garbage. */
- basic_block GTY ((skip (""))) original;
- basic_block GTY ((skip (""))) copy;
-
- int duplicated;
- int copy_number;
-
/* This field is used by the bb-reorder and tracer passes. */
int visited;
};
BB_HOT_PARTITION = 64,
/* Set on blocks that should be put in a cold section. */
- BB_COLD_PARTITION = 128
+ BB_COLD_PARTITION = 128,
+
+ /* Set on block that was duplicated. */
+ BB_DUPLICATED = 256,
+
+ /* Set on blocks that are in RTL format. */
+ BB_RTL = 1024
};
/* Dummy flag for convenience in the hot/cold partitioning code. */
#define FOR_ALL_BB(BB) \
for (BB = ENTRY_BLOCK_PTR; BB; BB = BB->next_bb)
-/* Special labels found during CFG build. */
-
-extern GTY(()) rtx label_value_list;
+#define FOR_ALL_BB_FN(BB, FN) \
+ for (BB = ENTRY_BLOCK_PTR_FOR_FUNCTION (FN); BB; BB = BB->next_bb)
extern bitmap_obstack reg_obstack;
\f
/* Stuff for recording basic block info. */
-#define BB_HEAD(B) (B)->head_
-#define BB_END(B) (B)->end_
+#define BB_HEAD(B) (B)->il.rtl->head_
+#define BB_END(B) (B)->il.rtl->end_
/* Special block numbers [markers] for entry and exit. */
#define ENTRY_BLOCK (-1)
edge *index_to_edge;
};
+/* The base value for branch probability notes and edge probabilities. */
+#define REG_BR_PROB_BASE 10000
+
/* This is the value which indicates no edge is present. */
#define EDGE_INDEX_NO_EDGE -1
typedef struct {
unsigned index;
- VEC(edge) **container;
+ VEC(edge,gc) **container;
} edge_iterator;
-static inline VEC(edge) *
+static inline VEC(edge,gc) *
ei_container (edge_iterator i)
{
gcc_assert (i.container);
/* Return an iterator pointing to the start of an edge vector. */
static inline edge_iterator
-ei_start_1 (VEC(edge) **ev)
+ei_start_1 (VEC(edge,gc) **ev)
{
edge_iterator i;
/* Return an iterator pointing to the last element of an edge
vector. */
static inline edge_iterator
-ei_last_1 (VEC(edge) **ev)
+ei_last_1 (VEC(edge,gc) **ev)
{
edge_iterator i;
return !ei_end_p (i) ? ei_edge (i) : NULL;
}
+/* Return 1 if we should continue to iterate. Return 0 otherwise.
+ *Edge P is set to the next edge if we are to continue to iterate
+ and NULL otherwise. */
+
+static inline bool
+ei_cond (edge_iterator ei, edge *p)
+{
+ if (!ei_end_p (ei))
+ {
+ *p = ei_edge (ei);
+ return 1;
+ }
+ else
+ {
+ *p = NULL;
+ return 0;
+ }
+}
+
/* This macro serves as a convenient way to iterate each edge in a
vector of predecessor or successor edges. It must not be used when
an element might be removed during the traversal, otherwise
}
*/
-#define FOR_EACH_EDGE(EDGE,ITER,EDGE_VEC) \
- for ((EDGE) = NULL, (ITER) = ei_start ((EDGE_VEC)); \
- ((EDGE) = ei_safe_edge ((ITER))); \
+#define FOR_EACH_EDGE(EDGE,ITER,EDGE_VEC) \
+ for ((ITER) = ei_start ((EDGE_VEC)); \
+ ei_cond ((ITER), &(EDGE)); \
ei_next (&(ITER)))
struct edge_list * create_edge_list (void);
#define PROP_SCAN_DEAD_STORES 128 /* Scan for dead code. */
#define PROP_ASM_SCAN 256 /* Internal flag used within flow.c
to flag analysis of asms. */
+#define PROP_DEAD_INSN 1024 /* Internal flag used within flow.c
+ to flag analysis of dead insn. */
#define PROP_FINAL (PROP_DEATH_NOTES | PROP_LOG_LINKS \
| PROP_REG_INFO | PROP_KILL_DEAD_CODE \
| PROP_SCAN_DEAD_CODE | PROP_AUTOINC \
extern void rtl_predict_edge (edge, enum br_predictor, int);
extern void predict_edge_def (edge, enum br_predictor, enum prediction);
extern void guess_outgoing_edge_probabilities (basic_block);
+extern void remove_predictions_associated_with_edge (edge);
/* In flow.c */
extern void init_flow (void);
extern void break_superblocks (void);
extern void check_bb_profile (basic_block, FILE *);
extern void update_bb_profile_for_threading (basic_block, int, gcov_type, edge);
+extern void init_rtl_bb_info (basic_block);
+
+extern void initialize_original_copy_tables (void);
+extern void free_original_copy_tables (void);
+extern void set_bb_original (basic_block, basic_block);
+extern basic_block get_bb_original (basic_block);
+extern void set_bb_copy (basic_block, basic_block);
+extern basic_block get_bb_copy (basic_block);
#include "cfghooks.h"
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