diff --git a/gcc/ira.c b/gcc/ira.c
index 89b5df4003d..472fcf52aad 100644
--- a/gcc/ira.c
+++ b/gcc/ira.c
@@ -5111,6 +5111,11 @@ move_unallocated_pseudos (void)
       {
 	int idx = i - first_moveable_pseudo;
 	rtx other_reg = pseudo_replaced_reg[idx];
+	/* If there is no appropriate pseudo in pseudo_replaced_reg, it
+	   means validate_change fails for this new pseudo in function
+	   find_moveable_pseudos, then bypass it here.*/
+	if (!other_reg)
+	  continue;
 	rtx_insn *def_insn = DF_REF_INSN (DF_REG_DEF_CHAIN (i));
 	/* The use must follow all definitions of OTHER_REG, so we can
 	   insert the new definition immediately after any of them.  */