Mercurial > hg > CbC > CbC_gcc

comparison gcc/tree-ssa-threadupdate.c @ 55:77e2b8dfacca gcc-4.4.5

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update it from 4.4.3 to 4.5.0
author ryoma <e075725@ie.u-ryukyu.ac.jp>
date Fri, 12 Feb 2010 23:39:51 +0900
parents a06113de4d67
children b7f97abdc517
comparison
equal deleted inserted replaced
52:c156f1bd5cd9 55:77e2b8dfacca
323 to them. The argument should have the same value as the argument 323 to them. The argument should have the same value as the argument
324 associated with the outgoing edge stored in RD. */ 324 associated with the outgoing edge stored in RD. */
325 for (gsi = gsi_start_phis (e->dest); !gsi_end_p (gsi); gsi_next (&gsi)) 325 for (gsi = gsi_start_phis (e->dest); !gsi_end_p (gsi); gsi_next (&gsi))
326 { 326 {
327 gimple phi = gsi_stmt (gsi); 327 gimple phi = gsi_stmt (gsi);
328 328 source_location locus;
329 int indx = rd->outgoing_edge->dest_idx; 329 int indx = rd->outgoing_edge->dest_idx;
330 add_phi_arg (phi, gimple_phi_arg_def (phi, indx), e); 330
331 locus = gimple_phi_arg_location (phi, indx);
332 add_phi_arg (phi, gimple_phi_arg_def (phi, indx), e, locus);
331 } 333 }
332 } 334 }
333 335
334 /* Hash table traversal callback routine to create duplicate blocks. */ 336 /* Hash table traversal callback routine to create duplicate blocks. */
335 337
474 476
475 /* Advance to the first executable statement. */ 477 /* Advance to the first executable statement. */
476 gsi = gsi_start_bb (bb); 478 gsi = gsi_start_bb (bb);
477 while (!gsi_end_p (gsi) 479 while (!gsi_end_p (gsi)
478 && (gimple_code (gsi_stmt (gsi)) == GIMPLE_LABEL 480 && (gimple_code (gsi_stmt (gsi)) == GIMPLE_LABEL
481 || is_gimple_debug (gsi_stmt (gsi))
479 || gimple_nop_p (gsi_stmt (gsi)))) 482 || gimple_nop_p (gsi_stmt (gsi))))
480 gsi_next (&gsi); 483 gsi_next (&gsi);
481 484
482 /* Check if this is an empty block. */ 485 /* Check if this is an empty block. */
483 if (gsi_end_p (gsi)) 486 if (gsi_end_p (gsi))
484 return true; 487 return true;
485 488
486 /* Test that we've reached the terminating control statement. */ 489 /* Test that we've reached the terminating control statement. */
630 thread_single_edge (edge e) 633 thread_single_edge (edge e)
631 { 634 {
632 basic_block bb = e->dest; 635 basic_block bb = e->dest;
633 edge eto = (edge) e->aux; 636 edge eto = (edge) e->aux;
634 struct redirection_data rd; 637 struct redirection_data rd;
635 struct local_info local_info;
636 638
637 e->aux = NULL; 639 e->aux = NULL;
638 640
639 thread_stats.num_threaded_edges++; 641 thread_stats.num_threaded_edges++;
640 642
652 } 654 }
653 655
654 /* Otherwise, we need to create a copy. */ 656 /* Otherwise, we need to create a copy. */
655 update_bb_profile_for_threading (bb, EDGE_FREQUENCY (e), e->count, eto); 657 update_bb_profile_for_threading (bb, EDGE_FREQUENCY (e), e->count, eto);
656 658
657 local_info.bb = bb;
658 rd.outgoing_edge = eto; 659 rd.outgoing_edge = eto;
659 660
660 create_block_for_threading (bb, &rd); 661 create_block_for_threading (bb, &rd);
661 create_edge_and_update_destination_phis (&rd); 662 create_edge_and_update_destination_phis (&rd);
662 663
904 gcc_assert (tgt_bb != NULL); 905 gcc_assert (tgt_bb != NULL);
905 } 906 }
906 else 907 else
907 tgt_bb = split_edge (tgt_edge); 908 tgt_bb = split_edge (tgt_edge);
908 } 909 }
909 910
910 if (latch->aux) 911 if (latch->aux)
911 { 912 {
912 /* First handle the case latch edge is redirected. */ 913 /* First handle the case latch edge is redirected. */
913 loop->latch = thread_single_edge (latch); 914 loop->latch = thread_single_edge (latch);
914 gcc_assert (single_succ (loop->latch) == tgt_bb); 915 gcc_assert (single_succ (loop->latch) == tgt_bb);
946 loop->header = mfb_kj_edge->dest; 947 loop->header = mfb_kj_edge->dest;
947 latch = make_forwarder_block (tgt_bb, mfb_keep_just, NULL); 948 latch = make_forwarder_block (tgt_bb, mfb_keep_just, NULL);
948 loop->header = latch->dest; 949 loop->header = latch->dest;
949 loop->latch = latch->src; 950 loop->latch = latch->src;
950 } 951 }
951 952
952 return true; 953 return true;
953 954
954 fail: 955 fail:
955 /* We failed to thread anything. Cancel the requests. */ 956 /* We failed to thread anything. Cancel the requests. */
956 FOR_EACH_EDGE (e, ei, header->preds) 957 FOR_EACH_EDGE (e, ei, header->preds)