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Lines Matching defs:loop_header

740    |         |             ====>   |      -V---V- loop_header -------------
774   basic_block loop_header, loop_latch, succ_bb, pred_bb;
786   loop_header = split_edge (entry_edge);
787   loop_latch = split_edge (single_succ_edge (loop_header));
789   make_edge (loop_header, succ_bb, 0);
790   redirect_edge_succ_nodup (single_succ_edge (loop_latch), loop_header);
793   set_immediate_dominator (CDI_DOMINATORS, loop_header, pred_bb);
794   set_immediate_dominator (CDI_DOMINATORS, loop_latch, loop_header);
795   set_immediate_dominator (CDI_DOMINATORS, succ_bb, loop_header);
799   loop->header = loop_header;
829   gsi = gsi_last_bb (loop_header);
844   split_block_after_labels (loop_header);