dist/gcc/haifa-sched.c

1627 	  rtx_insn *prev_first, *twin;
1641 	      twin = insn;
1646 	      twin = PREV_INSN (BB_END (rec));
1654 	      FOR_EACH_DEP (twin, SD_LIST_FORW, sd_it, dep)
1668 		      if (twin == insn)
1686 	      twin = PREV_INSN (twin);
1688 	  while (twin != prev_first);
7884 process_insn_forw_deps_be_in_spec (rtx_insn *insn, rtx_insn *twin, ds_t fs)
7935 	init_dep_1 (new_dep, twin, consumer, DEP_TYPE (dep), ds);
8002       rtx_insn *check, *twin;
8022       twin = emit_insn_before (copy_insn (PATTERN (insn)), BB_END (rec));
8023       haifa_init_insn (twin);
8025       sd_copy_back_deps (twin, insn, true);
8028         /* INSN_BB (insn) isn't determined for twin insns yet.
8030         fprintf (spec_info->dump, ";;\t\tGenerated twin insn : %d/rec%d\n",
8031                  INSN_UID (twin), rec->index);
8033       twins.safe_push (twin);
8050 	      init_dep (new_dep, pro, twin, REG_DEP_TRUE);
8055       process_insn_forw_deps_be_in_spec (insn, twin, ts);
8073   rtx_insn *twin;
8074   FOR_EACH_VEC_ELT_REVERSE (twins, i, twin)
8078       init_dep (new_dep, insn, twin, REG_DEP_OUTPUT);
8323   rtx_insn *label, *check, *twin;
8391   /* Initialize TWIN (twin is a duplicate of original instruction
8408       twin = emit_insn_after (ORIG_PAT (insn), BB_END (rec));
8409       haifa_init_insn (twin);
8412 	/* INSN_BB (insn) isn't determined for twin insns yet.
8414 	fprintf (spec_info->dump, ";;\t\tGenerated twin insn : %d/rec%d\n",
8415 		 INSN_UID (twin), rec->index);
8421       twin = check;
8428   sd_copy_back_deps (twin, insn, true);
8459 	 twin  --TRUE--> producer
8460 	 twin  --ANTI--> check
8464 	 twin  --ANTI--> producer
8465 	 twin  --ANTI--> check
8469 	 twin  ~~TRUE~~> producer
8470 	 twin  --ANTI--> check  */
8485 	  DEP_CON (new_dep) = twin;
8530   process_insn_forw_deps_be_in_spec (insn, twin, fs);
8543 	  init_dep (new_dep, insn, twin, REG_DEP_OUTPUT);
8571       init_dep (new_dep, check, twin, REG_DEP_ANTI);
8586       clear_priorities (twin, &priorities_roots);