2003-04-02 Vladimir Makarov <vmakarov@redhat.com>

	* config/rs6000/rs6000.c
	(TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD): Redefine the
	macros.
	(rs6000_issue_rate): Add case for 8540.
	(rs6000_use_sched_lookahead): New function.

	* config/rs6000/8540.md: Rename SIU units into SU ones and MIU
	units into MU ones.
	(ppc8540_branch, ppc8540_cr_logical): Add one cycle in the
	reservation before retirement.
	(ppc8540_multiply, ppc8540_load, ppc8540_store,
	ppc8540_simple_float, ppc8540_vector_load, ppc8540_vector_store):
	Remove additional cycle in the reservation before retirement.
	(ppc8540_mfcr, ppc8540_mtcrf, ppc8540_mtjmpr): Add missed
	reservation of ppc8540_issue.

From-SVN: r65167

gcc/ChangeLog

+2003-04-02  Vladimir Makarov  <vmakarov@redhat.com>
+
+	* config/rs6000/rs6000.c
+	(TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD): Redefine the
+	macros.
+	(rs6000_issue_rate): Add case for 8540.
+	(rs6000_use_sched_lookahead): New function.
+
+	* config/rs6000/8540.md: Rename SIU units into SU ones and MIU
+	units into MU ones.
+	(ppc8540_branch, ppc8540_cr_logical): Add one cycle in the
+	reservation before retirement.
+	(ppc8540_multiply, ppc8540_load, ppc8540_store,
+	ppc8540_simple_float, ppc8540_vector_load, ppc8540_vector_store):
+	Remove additional cycle in the reservation before retirement.
+	(ppc8540_mfcr, ppc8540_mtcrf, ppc8540_mtjmpr): Add missed
+	reservation of ppc8540_issue.
+	
 2003-04-02  Andreas Schwab  <schwab@suse.de>
 
 	* real.c (decode_ieee_single): Fix decoding of SNaN bit.

gcc/config/rs6000/rs6000.c

@@ -241,6 +241,7 @@ static bool rs6000_rtx_costs PARAMS ((rtx, int, int, int *));
 static int rs6000_adjust_cost PARAMS ((rtx, rtx, rtx, int));
 static int rs6000_adjust_priority PARAMS ((rtx, int));
 static int rs6000_issue_rate PARAMS ((void));
+static int rs6000_use_sched_lookahead PARAMS ((void));
 
 static void rs6000_init_builtins PARAMS ((void));
 static rtx rs6000_expand_unop_builtin PARAMS ((enum insn_code, tree, rtx));
@@ -407,6 +408,9 @@ static const char alt_reg_names[][8] =
 #undef TARGET_SCHED_ADJUST_PRIORITY
 #define TARGET_SCHED_ADJUST_PRIORITY rs6000_adjust_priority
 
+#undef TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD
+#define TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD rs6000_use_sched_lookahead
+
 #undef TARGET_INIT_BUILTINS
 #define TARGET_INIT_BUILTINS rs6000_init_builtins
 
@@ -12661,6 +12665,7 @@ rs6000_issue_rate ()
   case CPU_PPC603:
   case CPU_PPC750:
   case CPU_PPC7400:
+  case CPU_PPC8540:
     return 2; 
   case CPU_RIOS2:
   case CPU_PPC604:
@@ -12674,6 +12679,17 @@ rs6000_issue_rate ()
   }
 }
 
+/* Return how many instructions to look ahead for better insn
+   scheduling.  */
+
+static int
+rs6000_use_sched_lookahead ()
+{
+  if (rs6000_cpu_attr == CPU_PPC8540)
+    return 4;
+  return 0;
+}
+
 
 /* Length in units of the trampoline for entering a nested function.  */