Fix misscheduling of epilogue predicate register restore.

[pf3gnuchains/gcc-fork.git] / gcc / config / ia64 / ia64.c

diff --git a/gcc/config/ia64/ia64.c b/gcc/config/ia64/ia64.c
index 9de15ab..9c3b1f8 100644 (file)
--- a/gcc/config/ia64/ia64.c
+++ b/gcc/config/ia64/ia64.c
@@ -2421,16 +2421,7 @@ rtx_needs_barrier (x, flags, pred)
            need_barrier |= rws_access_reg (i, flags, pred);
          break;
 
-       case 6: /* mov pr= */
-         /* This writes all predicate registers.  */
-         new_flags.is_write = 1;
-         /* We need to skip by two, because rws_access_reg always writes
-            to two predicate registers at a time.  */
-         /* ??? Strictly speaking, we shouldn't be counting writes to pr0.  */
-         for (i = PR_REG (0); i < PR_REG (64); i += 2)
-           need_barrier |= rws_access_reg (i, new_flags, pred);
-         break;
-
+       case 6:
        case 7:
          abort ();
 
@@ -2486,6 +2477,16 @@ rtx_needs_barrier (x, flags, pred)
          need_barrier = rws_access_reg (REG_AR_PFS, new_flags, pred);
          break;
 
+       case 6: /* mov pr= */
+         /* This writes all predicate registers.  */
+         new_flags.is_write = 1;
+         /* We need to skip by two, because rws_access_reg always writes
+            to two predicate registers at a time.  */
+         /* ??? Strictly speaking, we shouldn't be counting writes to pr0.  */
+         for (i = PR_REG (0); i < PR_REG (64); i += 2)
+           need_barrier |= rws_access_reg (i, new_flags, pred);
+         break;
+
        default:
          abort ();
        }