74    pred->successors[0] = succ1;  in link_blocks()
78    pred->successors[1] = succ2;  in link_blocks()
86    if (pred->successors[0] == succ) {  in unlink_blocks()
87       pred->successors[0] = pred->successors[1];  in unlink_blocks()
88       pred->successors[1] = NULL;  in unlink_blocks()
90       assert(pred->successors[1] == succ);  in unlink_blocks()
91       pred->successors[1] = NULL;  in unlink_blocks()
100    if (block->successors[1] != NULL)  in unlink_block_successors()
101       unlink_blocks(block, block->successors[1]);  in unlink_block_successors()
102    if (block->successors[0] != NULL)  in unlink_block_successors()
103       unlink_blocks(block, block->successors[0]);  in unlink_block_successors()
173    if (block->successors[0] == old_succ) {  in replace_successor()
174       block->successors[0] = new_succ;  in replace_successor()
176       assert(block->successors[1] == old_succ);  in replace_successor()
177       block->successors[1] = new_succ;  in replace_successor()
272    nir_block *succ1 = source->successors[0];  in move_successors()
273    nir_block *succ2 = source->successors[1];  in move_successors()
504    if (block->successors[0])  in unlink_jump()
505       remove_phi_src(block->successors[0], block);  in unlink_jump()
506    if (block->successors[1])  in unlink_jump()
507       remove_phi_src(block->successors[1], block);  in unlink_jump()
558       if (after->successors[0])  in stitch_blocks()
559          remove_phi_src(after->successors[0], after);  in stitch_blocks()
560       if (after->successors[1])  in stitch_blocks()
561          remove_phi_src(after->successors[1], after);  in stitch_blocks()