loop.h (struct loop_info): Add member has_prefetch.

	* loop.h (struct loop_info): Add member has_prefetch.
	* loop.c (PREFETCH_CONDITIONAL): Change default to 1.
	(prescan_loop): Initialize has_prefetch.
	(struct prefetch_info): Change prefetch_in_loop and
	prefetch_before_loop from bit fields to ints.
	(emit_prefetch_instructions): Several small fixes.
	(check_dbra_loop): Don't reverse loop that uses prefetch.

From-SVN: r53524

gcc/ChangeLog

+2002-05-16  Janis Johnson  <janis187@us.ibm.com>
+
+	* loop.h (struct loop_info): Add member has_prefetch.
+	* loop.c (PREFETCH_CONDITIONAL): Change default to 1.
+	(prescan_loop): Initialize has_prefetch.
+	(struct prefetch_info): Change prefetch_in_loop and
+	prefetch_before_loop from bit fields to ints.
+	(emit_prefetch_instructions): Several small fixes.
+	(check_dbra_loop): Don't reverse loop that uses prefetch.
+
 2002-05-16  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
 
 	* Makefile.in: Allow for PWDCMD to override hardcoded pwd.

gcc/loop.h

@@ -304,6 +304,8 @@ struct loop_info
   int has_libcall;
   /* Nonzero if there is a non constant call in the current loop.  */
   int has_nonconst_call;
+  /* Nonzero if there is a prefetch instruction in the current loop.  */
+  int has_prefetch;
   /* Nonzero if there is a volatile memory reference in the current
      loop.  */
   int has_volatile;