fwprop.c (try_fwprop_subst): Use set_unique_reg_note to add the REG_EQ* note.

	* fwprop.c (try_fwprop_subst): Use set_unique_reg_note
	to add the REG_EQ* note.
	* see.c (see_merge_one_use_extension): Likewise.
	* local-alloc.c (update_equiv_regs): Likewise.  Also don't
	turn REG_EQUAL notes into REG_EQUIV notes if the target
	register may have more than one set.
	* function.c (assign_parm_setup_reg): Use set_unique_reg_note.
	* gcse.c (try_replace_reg): Likewise.
	* alias.c (init_alias_analysis): Use find_reg_equal_equiv_note.
	* calls.c (fixup_tail_calls): Likewise.  Abort if there is
	more than one REG_EQUIV note.
	* reload1.c (gen_reload): Use set_unique_reg_note.

From-SVN: r121821

1 files changed, 2 insertions, 1 deletions

diff --git a/gcc/see.c b/gcc/see.c
index d20cdf4..4664faa 100644
--- a/gcc/see.c
+++ b/gcc/see.c
@@ -2612,7 +2612,8 @@ see_merge_one_use_extension (void **slot, void *b)
 	/* Replacement failed.  Remove the note.  */
 	remove_note (ref_copy, note);
       else
-	XEXP (note, 0) = simplified_note;
+	set_unique_reg_note (ref_copy, REG_NOTE_KIND (note),
+			     simplified_note);
     }
 
   if (!see_want_to_be_merged_with_extension (ref, use_se, USE_EXTENSION))