DEF_VEC_ALLOC_P(edge,gc);
DEF_VEC_ALLOC_P(edge,heap);
-#define EDGE_FALLTHRU 1 /* 'Straight line' flow */
-#define EDGE_ABNORMAL 2 /* Strange flow, like computed
+/* Always update the table in cfg.c dump_edge_info. */
+#define EDGE_FALLTHRU 0x0001 /* 'Straight line' flow */
+#define EDGE_ABNORMAL 0x0002 /* Strange flow, like computed
label, or eh */
-#define EDGE_ABNORMAL_CALL 4 /* Call with abnormal exit
+#define EDGE_ABNORMAL_CALL 0x0004 /* Call with abnormal exit
like an exception, or sibcall */
-#define EDGE_EH 8 /* Exception throw */
-#define EDGE_FAKE 16 /* Not a real edge (profile.c) */
-#define EDGE_DFS_BACK 32 /* A backwards edge */
-#define EDGE_CAN_FALLTHRU 64 /* Candidate for straight line
+#define EDGE_EH 0x0008 /* Exception throw */
+#define EDGE_FAKE 0x0010 /* Not a real edge (profile.c) */
+#define EDGE_DFS_BACK 0x0020 /* A backwards edge */
+#define EDGE_CAN_FALLTHRU 0x0040 /* Candidate for straight line
flow. */
-#define EDGE_IRREDUCIBLE_LOOP 128 /* Part of irreducible loop. */
-#define EDGE_SIBCALL 256 /* Edge from sibcall to exit. */
-#define EDGE_LOOP_EXIT 512 /* Exit of a loop. */
-#define EDGE_TRUE_VALUE 1024 /* Edge taken when controlling
+#define EDGE_IRREDUCIBLE_LOOP 0x0080 /* Part of irreducible loop. */
+#define EDGE_SIBCALL 0x0100 /* Edge from sibcall to exit. */
+#define EDGE_LOOP_EXIT 0x0200 /* Exit of a loop. */
+#define EDGE_TRUE_VALUE 0x0400 /* Edge taken when controlling
predicate is nonzero. */
-#define EDGE_FALSE_VALUE 2048 /* Edge taken when controlling
+#define EDGE_FALSE_VALUE 0x0800 /* Edge taken when controlling
predicate is zero. */
-#define EDGE_EXECUTABLE 4096 /* Edge is executable. Only
+#define EDGE_EXECUTABLE 0x1000 /* Edge is executable. Only
valid during SSA-CCP. */
-#define EDGE_CROSSING 8192 /* Edge crosses between hot
+#define EDGE_CROSSING 0x2000 /* Edge crosses between hot
and cold sections, when we
do partitioning. */
-#define EDGE_ALL_FLAGS 16383
+#define EDGE_PRESERVE 0x4000 /* Never merge blocks via this edge. */
+#define EDGE_ALL_FLAGS 0x7fff
-#define EDGE_COMPLEX (EDGE_ABNORMAL | EDGE_ABNORMAL_CALL | EDGE_EH)
+#define EDGE_COMPLEX \
+ (EDGE_ABNORMAL | EDGE_ABNORMAL_CALL | EDGE_EH | EDGE_PRESERVE)
/* Counter summary from the last set of coverage counts read by
profile.c. */
the compilation, so they are never cleared.
All other flags may be cleared by clear_bb_flags(). It is generally
- a bad idea to rely on any flags being up-to-date. */
+ a bad idea to rely on any flags being up-to-date.
+
+ Always update the table in cfg.c dump_bb_info. */
enum bb_flags
{
{
PROFILE_ABSENT,
PROFILE_GUESSED,
- PROFILE_READ
+ PROFILE_READ,
+ PROFILE_LAST /* Last value, used by profile streaming. */
};
/* A structure to group all the per-function control flow graph data.
/* In cfgrtl.c */
extern rtx block_label (basic_block);
+extern rtx bb_note (basic_block);
extern bool purge_all_dead_edges (void);
extern bool purge_dead_edges (basic_block);
extern bool fixup_abnormal_edges (void);
+extern basic_block force_nonfallthru_and_redirect (edge, basic_block, rtx);
/* In cfgbuild.c. */
extern void find_many_sub_basic_blocks (sbitmap);