Add PR number in this entry:

[pf3gnuchains/gcc-fork.git] / gcc / loop-doloop.c

diff --git a/gcc/loop-doloop.c b/gcc/loop-doloop.c
index dd15aab..280abdd 100644 (file)
--- a/gcc/loop-doloop.c
+++ b/gcc/loop-doloop.c
@@ -16,8 +16,8 @@ for more details.
 
 You should have received a copy of the GNU General Public License
 along with GCC; see the file COPYING.  If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA.  */
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA.  */
 
 #include "config.h"
 #include "system.h"
@@ -203,12 +203,16 @@ doloop_valid_p (struct loop *loop, struct niter_desc *desc)
        {
          /* Different targets have different necessities for low-overhead
             looping.  Call the back end for each instruction within the loop
-            to let it decide whether the insn is valid.  */
-         if (!targetm.insn_valid_within_doloop (insn))
-         {
+            to let it decide whether the insn prohibits a low-overhead loop.
+            It will then return the cause for it to emit to the dump file.  */
+         const char * invalid = targetm.invalid_within_doloop (insn);
+         if (invalid)
+           {
+             if (dump_file)
+               fprintf (dump_file, "Doloop: %s\n", invalid);
              result = false;
              goto cleanup;
-         }
+           }
        }
     }
   result = true;
@@ -392,7 +396,7 @@ doloop_modify (struct loop *loop, struct niter_desc *desc,
     unsigned level = get_loop_level (loop) + 1;
     init = gen_doloop_begin (counter_reg,
                             desc->const_iter ? desc->niter_expr : const0_rtx,
-                            desc->niter_max,
+                            GEN_INT (desc->niter_max),
                             GEN_INT (level));
     if (init)
       {