PR c++/34513

[pf3gnuchains/gcc-fork.git] / gcc / see.c

diff --git a/gcc/see.c b/gcc/see.c
index 0302af2..8191b2d 100644 (file)
--- a/gcc/see.c
+++ b/gcc/see.c
@@ -3649,9 +3649,9 @@ see_update_defs_relevancy (rtx insn, struct df_ref *ref,
 
    The information of the u'th use is stored in use_entry[u] and the
    information of the d'th definition is stored in def_entry[d].
-   
+
    Currently all the uses are relevant for the optimization except for
-   uses that are in LIBCALL instructions.  */
+   uses that are in LIBCALL or RETVAL instructions.  */
 
 static void
 see_update_relevancy (void)
@@ -3676,13 +3676,12 @@ see_update_relevancy (void)
          unsigned int uid = INSN_UID (insn);
          if (INSN_P (insn))
            {
-             
-             /* If this is an insn in a libcall, do not touch the uses.  */
-             if (find_reg_note (insn, REG_LIBCALL_ID, NULL_RTX))
+             if (find_reg_note (insn, REG_LIBCALL, NULL_RTX)
+                 || find_reg_note (insn, REG_RETVAL, NULL_RTX))
                et = NOT_RELEVANT;
              else
                et = RELEVANT_USE;
-             
+
              for (use_rec = DF_INSN_UID_USES (uid); *use_rec; use_rec++)
                {
                  struct df_ref *use = *use_rec;