| sched-ebb.c (117395) | sched-ebb.c (119256) |
|---|---|
| 1/* Instruction scheduling pass. 2 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 3 1999, 2000, 2001, 2002 Free Software Foundation, Inc. 4 Contributed by Michael Tiemann (tiemann@cygnus.com) Enhanced by, 5 and currently maintained by, Jim Wilson (wilson@cygnus.com) 6 7This file is part of GCC. 8 --- 38 unchanged lines hidden (view full) --- 47/* Implementations of the sched_info functions for region scheduling. */ 48static void init_ready_list PARAMS ((struct ready_list *)); 49static int can_schedule_ready_p PARAMS ((rtx)); 50static int new_ready PARAMS ((rtx)); 51static int schedule_more_p PARAMS ((void)); 52static const char *ebb_print_insn PARAMS ((rtx, int)); 53static int rank PARAMS ((rtx, rtx)); 54static int contributes_to_priority PARAMS ((rtx, rtx)); | 1/* Instruction scheduling pass. 2 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 3 1999, 2000, 2001, 2002 Free Software Foundation, Inc. 4 Contributed by Michael Tiemann (tiemann@cygnus.com) Enhanced by, 5 and currently maintained by, Jim Wilson (wilson@cygnus.com) 6 7This file is part of GCC. 8 --- 38 unchanged lines hidden (view full) --- 47/* Implementations of the sched_info functions for region scheduling. */ 48static void init_ready_list PARAMS ((struct ready_list *)); 49static int can_schedule_ready_p PARAMS ((rtx)); 50static int new_ready PARAMS ((rtx)); 51static int schedule_more_p PARAMS ((void)); 52static const char *ebb_print_insn PARAMS ((rtx, int)); 53static int rank PARAMS ((rtx, rtx)); 54static int contributes_to_priority PARAMS ((rtx, rtx)); |
| 55static void compute_jump_reg_dependencies PARAMS ((rtx, regset)); | 55static void compute_jump_reg_dependencies PARAMS ((rtx, regset, regset, 56 regset)); |
| 56static void schedule_ebb PARAMS ((rtx, rtx)); 57 58/* Return nonzero if there are more insns that should be scheduled. */ 59 60static int 61schedule_more_p () 62{ 63 return sched_n_insns < target_n_insns; --- 91 unchanged lines hidden (view full) --- 155 156static int 157contributes_to_priority (next, insn) 158 rtx next ATTRIBUTE_UNUSED, insn ATTRIBUTE_UNUSED; 159{ 160 return 1; 161} 162 | 57static void schedule_ebb PARAMS ((rtx, rtx)); 58 59/* Return nonzero if there are more insns that should be scheduled. */ 60 61static int 62schedule_more_p () 63{ 64 return sched_n_insns < target_n_insns; --- 91 unchanged lines hidden (view full) --- 156 157static int 158contributes_to_priority (next, insn) 159 rtx next ATTRIBUTE_UNUSED, insn ATTRIBUTE_UNUSED; 160{ 161 return 1; 162} 163 |
| 163/* INSN is a JUMP_INSN. Store the set of registers that must be considered 164 to be set by this jump in SET. */ | 164/* INSN is a JUMP_INSN, COND_SET is the set of registers that are 165 conditionally set before INSN. Store the set of registers that 166 must be considered as used by this jump in USED and that of 167 registers that must be considered as set in SET. */ |
| 165 166static void | 168 169static void |
| 167compute_jump_reg_dependencies (insn, set) | 170compute_jump_reg_dependencies (insn, cond_set, used, set) |
| 168 rtx insn; | 171 rtx insn; |
| 169 regset set; | 172 regset cond_set, used, set; |
| 170{ 171 basic_block b = BLOCK_FOR_INSN (insn); 172 edge e; 173 for (e = b->succ; e; e = e->succ_next) | 173{ 174 basic_block b = BLOCK_FOR_INSN (insn); 175 edge e; 176 for (e = b->succ; e; e = e->succ_next) |
| 174 if ((e->flags & EDGE_FALLTHRU) == 0) 175 { 176 bitmap_operation (set, set, e->dest->global_live_at_start, 177 BITMAP_IOR); 178 } | 177 if (e->flags & EDGE_FALLTHRU) 178 /* The jump may be a by-product of a branch that has been merged 179 in the main codepath after being conditionalized. Therefore 180 it may guard the fallthrough block from using a value that has 181 conditionally overwritten that of the main codepath. So we 182 consider that it restores the value of the main codepath. */ 183 bitmap_operation (set, e->dest->global_live_at_start, cond_set, 184 BITMAP_AND); 185 else 186 bitmap_operation (used, used, e->dest->global_live_at_start, 187 BITMAP_IOR); |
| 179} 180 181/* Used in schedule_insns to initialize current_sched_info for scheduling 182 regions (or single basic blocks). */ 183 184static struct sched_info ebb_sched_info = 185{ 186 init_ready_list, --- 171 unchanged lines hidden --- | 188} 189 190/* Used in schedule_insns to initialize current_sched_info for scheduling 191 regions (or single basic blocks). */ 192 193static struct sched_info ebb_sched_info = 194{ 195 init_ready_list, --- 171 unchanged lines hidden --- |