diff options
Diffstat (limited to 'gcc/basic-block.h')
| -rw-r--r-- | gcc/basic-block.h | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/gcc/basic-block.h b/gcc/basic-block.h index c3a9d9a2ab5..5fa62268b01 100644 --- a/gcc/basic-block.h +++ b/gcc/basic-block.h @@ -24,6 +24,7 @@ Boston, MA 02111-1307, USA. */ #include "bitmap.h" #include "sbitmap.h" #include "varray.h" +#include "partition.h" /* Head of register set linked list. */ typedef bitmap_head regset_head; @@ -146,7 +147,9 @@ typedef struct basic_block_def { /* The edges into and out of the block. */ edge pred, succ; - /* Liveness info. */ + /* Liveness info. Note that in SSA form, global_live_at_start does + not reflect the use of regs in phi functions, since the liveness + of these regs may depend on which edge was taken into the block. */ regset local_set; regset global_live_at_start; regset global_live_at_end; @@ -459,5 +462,31 @@ extern void debug_regset PARAMS ((regset)); extern void verify_flow_info PARAMS ((void)); extern int flow_loop_outside_edge_p PARAMS ((const struct loop *, edge)); +typedef struct conflict_graph_def *conflict_graph; + +/* Callback function when enumerating conflicts. The arguments are + the smaller and larger regno in the conflict. Returns zero if + enumeration is to continue, non-zero to halt enumeration. */ +typedef int (*conflict_graph_enum_fn) (int, int, void *); + + +/* Prototypes of operations on conflict graphs. */ + +extern conflict_graph conflict_graph_new + PARAMS ((int)); +extern void conflict_graph_delete PARAMS ((conflict_graph)); +extern int conflict_graph_add PARAMS ((conflict_graph, + int, int)); +extern int conflict_graph_conflict_p PARAMS ((conflict_graph, + int, int)); +extern void conflict_graph_enum PARAMS ((conflict_graph, int, + conflict_graph_enum_fn, + void *)); +extern void conflict_graph_merge_regs PARAMS ((conflict_graph, int, + int)); +extern void conflict_graph_print PARAMS ((conflict_graph, FILE*)); +extern conflict_graph conflict_graph_compute + PARAMS ((regset, + partition)); #endif /* _BASIC_BLOCK_H */ |