beflags: add missing liveness updates

ir/be/beflags.c

@@ -123,6 +123,8 @@ static void move_other_uses(ir_node *node, ir_node *copy)
 			ir_node *succ = get_edge_src_irn(edge);
 			if (irn_visited(succ) && succ != copy_prev &&
 			    value_strictly_dominates(copy, succ)) {
+				ir_graph *irg = get_irn_irg(succ);
+				be_lv_t *lv = be_get_irg_liveness(irg);
 				if (new_proj == NULL) {
 					ir_mode *proj_mode = get_irn_mode(proj);
 					int      pn        = get_Proj_proj(proj);
@@ -130,6 +132,8 @@ static void move_other_uses(ir_node *node, ir_node *copy)
 				}
 				int n = get_edge_src_pos(edge);
 				set_irn_n(succ, n, new_proj);
+				be_liveness_update(lv, proj);
+				be_liveness_update(lv, new_proj);
 			}
 		}
 	}

ir/be/ia32/bearch_ia32.c

@@ -41,6 +41,7 @@
 #include "be.h"
 #include "be_t.h"
 #include "beirgmod.h"
+#include "belive_t.h"
 #include "beblocksched.h"
 #include "bespillutil.h"
 #include "bespillslots.h"
@@ -671,6 +672,10 @@ static bool ia32_try_replace_flags(ir_node *consumers, ir_node *flags, ir_node *
 						ir_node *proj = new_r_Proj(available, flag_mode, pn);
 						arch_set_irn_register(proj, flag_reg);
 						set_irn_n(c, i, proj);
+						ir_graph *irg = get_irn_irg(in);
+						be_lv_t *lv = be_get_irg_liveness(irg);
+						be_liveness_introduce(lv, proj);
+						be_liveness_update(lv, in);
 					}
 				}
 			}