config.gcc: Added z9-109 switch.

2005-08-16  Ulrich Weigand  <Ulrich.Weigand@de.ibm.com>
	    Andreas Krebbel  <krebbel1@de.ibm.com>

	* config.gcc: Added z9-109 switch.
	* config/s390/2084.md ("x_int", "x_agen", "x_lr", "x_la", "x_larl",
	"x_load", "x_store", "x_branch", "x_call", "x_mul_hi", "x_mul_sidi",
	"x_div", "x_sem", "x_cs", "x_vs", "x_stm", "x_lm", "x_other",
	"x_fsimpdf", "x_fsimpsf", "x_fdivdf", "x_fdivsf", "x_floaddf",
	"x_floadsf", "x_fstore_df", "x_fstoresf", "x_ftoi", "x_itof"): Enable
	for "z9_109" cpu attribute.
	* config/s390/s390.c (z9_109_cost): New processor cost structure.
	(CONST_OK_FOR_Os, CONST_OK_FOR_Op, CONST_OK_FOR_On): New macros.
	(s390_handle_arch_option): Added z9-109 switch.
	(override_options): Set respective cost function for z9-109.
	(s390_const_ok_for_constraint_p): New constraints Os, Op, On.
	(legitimate_reload_constant_p): Accept extended immediates.
	(print_operand): Three new output modifiers added: k, m and o.
	(s390_adjust_priority, s390_issue_rate): Handle Z9_109 like Z990.
	(s390_output_mi_thunk): Use extended immediate when possible.
	* config/s390/s390.h (processor_flags): Added PF_EXTIMM.
	(TARGET_CPU_EXTIMM, TARGET_EXTIMM): New macros.
	(CONSTRAINT_LEN): Added length of O constraint.
	(CLZ_DEFINED_VALUE_AT_ZERO): Definition added.
	* config/s390/s390.md ("cpu"): New value z9_109 added.
	("*tstdi_extimm", "*tstdi_ccconly_extimm", "*tstsi_extimm",
	"*tstsi_cconly_extimm", "*movdi_64extimm", "*extendhidi2_extimm",
	"*extendqidi2_extimm", "*extendhisi2_extimm", "*extendqisi2_extimm",
	"*zero_extend<mode>si2_extimm", "*anddi3_extimm", "*iordi3_extimm",
	"*xordi3_extimm", "clzdi2", "clztidi2"): New patterns.
	("*tstdi", "*tstsi", "*movdi_64", "*extendhisi2", "*extendqisi2",
	"*zero_extend<mode>si2_64", "zero_extendqihi2", "*zero_extendqihi2_64",
	"*anddi3", "*iordi3", "*xordi3"): Disable for TARGET_EXTIMM.
	("*cmpdi_cct", "*cmpsi_cct", "*cmpdi_ccs", "*cmpsi_ccs", "*cmpdi_ccu",
	"*cmpsi_ccu", "*movsi_zarch", "*adddi3_imm_cc", "*adddi3_carry1_cc",
	"*adddi3_carry2_cc", "*adddi3_cc", "*adddi3_64", "*addsi3_imm_cc",
	"*addsi3_carry1_cc", "*addsi3_carry2_cc", "*addsi3_cc", "addsi3",
	"*andsi3_cc", "*andsi3_cconly", "*andsi3_zarch", "*iorsi3_cc",
	"*iorsi3_cconly", "*iorsi3_zarch", "*xorsi3_cc", "*xorsi3_cconly",
	"*xorsi3", "*xorhi3", "*xorqi3"): Added instruction using extended
	immediates.
	("extend<mode>di2", "extend<mode>si2", "zero_extend<mode>di2",
	"zero_extend<mode>si2"): Allow memory operands and don't manually emit
	insns for TARGET_EXTIMM.

From-SVN: r103211

gcc/config.gcc

@@ -2657,7 +2657,7 @@ case "${target}" in
 		for which in arch tune; do
 			eval "val=\$with_$which"
 			case ${val} in
-			"" | g5 | g6 | z900 | z990)
+			"" | g5 | g6 | z900 | z990 | z9-109)
 				# OK
 				;;
 			*)

gcc/config/s390/2084.md

@@ -62,69 +62,69 @@
 ;;
 
 (define_insn_reservation "x_int" 1
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (and (eq_attr "type" "integer")
             (eq_attr "atype" "reg")))
   "x-e1-st,x-wr-st")
 
 (define_insn_reservation "x_agen" 1
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (and (eq_attr "type" "integer")
             (eq_attr "atype" "agen")))
   "x-e1-st,x-wr-st")
 
 (define_insn_reservation "x_lr" 1
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "lr"))
   "x-e1-st,x-wr-st") 
 
 (define_insn_reservation "x_la" 1 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "la"))
   "x-e1-st,x-wr-st") 
 
 (define_insn_reservation "x_larl" 1 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "larl"))
   "x-e1-st,x-wr-st") 
 
 (define_insn_reservation "x_load" 1 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "load"))
   "x-e1-st+x-mem,x-wr-st") 
 
 (define_insn_reservation "x_store" 1 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "store"))
   "x-e1-st+x_store_tok,x-wr-st") 
 
 (define_insn_reservation "x_branch" 1 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "branch"))
   "x_e1_r,x_wr_r") 
 
 (define_insn_reservation "x_call" 5 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "jsr"))
   "x-e1-np*5,x-wr-np")
  
 (define_insn_reservation "x_mul_hi" 2
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "imulhi"))
   "x-e1-np*2,x-wr-np")
 
 (define_insn_reservation "x_mul_sidi" 4
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "imulsi,imuldi"))
   "x-e1-np*4,x-wr-np")
 
 (define_insn_reservation "x_div" 10
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "idiv"))
   "x-e1-np*10,x-wr-np")
 
 (define_insn_reservation "x_sem" 17 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "sem"))
   "x-e1-np+x-mem,x-e1-np*16,x-wr-st") 
 
@@ -133,27 +133,27 @@
 ;;
 
 (define_insn_reservation "x_cs" 1 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "cs"))
   "x-e1-np,x-wr-np") 
 
 (define_insn_reservation "x_vs" 1 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "vs"))
   "x-e1-np*10,x-wr-np") 
 
 (define_insn_reservation "x_stm" 1 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "stm"))
   "(x-e1-np+x_store_tok)*10,x-wr-np") 
 
 (define_insn_reservation "x_lm" 1 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "lm"))
   "x-e1-np*10,x-wr-np") 
 
 (define_insn_reservation "x_other" 1 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "other"))
   "x-e1-np,x-wr-np") 
 
@@ -162,52 +162,52 @@
 ;;
 
 (define_insn_reservation "x_fsimpdf" 6 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "fsimpdf,fmuldf"))
   "x_e1_t,x-wr-fp") 
 
 (define_insn_reservation "x_fsimpsf" 6 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "fsimpsf,fmulsf"))
   "x_e1_t,x-wr-fp") 
 
 (define_insn_reservation "x_fdivdf" 36
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "fdivdf,fsqrtdf"))
   "x_e1_t*30,x-wr-fp") 
 
 (define_insn_reservation "x_fdivsf" 36 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "fdivsf,fsqrtsf"))
   "x_e1_t*30,x-wr-fp") 
 
 (define_insn_reservation "x_floaddf" 6 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "floaddf"))
   "x_e1_t,x-wr-fp") 
 
 (define_insn_reservation "x_floadsf" 6 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "floadsf"))
   "x_e1_t,x-wr-fp") 
 
 (define_insn_reservation "x_fstoredf" 1 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "fstoredf"))
   "x_e1_t,x-wr-fp") 
 
 (define_insn_reservation "x_fstoresf" 1 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "fstoresf"))
   "x_e1_t,x-wr-fp") 
 
 (define_insn_reservation "x_ftoi" 1 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "ftoi"))
   "x_e1_t*3,x-wr-fp") 
 
 (define_insn_reservation "x_itof" 7 
-  (and (eq_attr "cpu" "z990")
+  (and (eq_attr "cpu" "z990,z9_109")
        (eq_attr "type" "itof"))
   "x_e1_t*3,x-wr-fp") 
 

gcc/config/s390/s390.c

@@ -153,6 +153,36 @@ struct processor_costs z990_cost =
   COSTS_N_INSNS (31),    /* DSGR */
 };
 
+static const
+struct processor_costs z9_109_cost = 
+{
+  COSTS_N_INSNS (4),     /* M     */
+  COSTS_N_INSNS (2),     /* MGHI  */
+  COSTS_N_INSNS (2),     /* MH    */
+  COSTS_N_INSNS (2),     /* MHI   */
+  COSTS_N_INSNS (4),     /* ML    */
+  COSTS_N_INSNS (4),     /* MR    */
+  COSTS_N_INSNS (5),     /* MS    */
+  COSTS_N_INSNS (6),     /* MSG   */
+  COSTS_N_INSNS (4),     /* MSGF  */
+  COSTS_N_INSNS (4),     /* MSGFR */
+  COSTS_N_INSNS (4),     /* MSGR  */
+  COSTS_N_INSNS (4),     /* MSR   */
+  COSTS_N_INSNS (1),     /* multiplication in DFmode */
+  COSTS_N_INSNS (66),    /* SQDBR */
+  COSTS_N_INSNS (38),    /* SQEBR */
+  COSTS_N_INSNS (1),     /* MADBR */
+  COSTS_N_INSNS (1),     /* MAEBR */
+  COSTS_N_INSNS (40),    /* DDBR */
+  COSTS_N_INSNS (37),    /* DDR  */
+  COSTS_N_INSNS (26),    /* DDBR */
+  COSTS_N_INSNS (28),    /* DER  */
+  COSTS_N_INSNS (30),    /* DLGR */
+  COSTS_N_INSNS (23),    /* DLR */
+  COSTS_N_INSNS (23),    /* DR */
+  COSTS_N_INSNS (24),    /* DSGFR */
+  COSTS_N_INSNS (24),    /* DSGR */
+};
 
 extern int reload_completed;
 
@@ -272,6 +302,12 @@ struct machine_function GTY(())
 	CONST_OK_FOR_CONSTRAINT_P((x), 'J', "J")
 #define CONST_OK_FOR_K(x) \
 	CONST_OK_FOR_CONSTRAINT_P((x), 'K', "K")
+#define CONST_OK_FOR_Os(x) \
+        CONST_OK_FOR_CONSTRAINT_P((x), 'O', "Os")
+#define CONST_OK_FOR_Op(x) \
+        CONST_OK_FOR_CONSTRAINT_P((x), 'O', "Op")
+#define CONST_OK_FOR_On(x) \
+        CONST_OK_FOR_CONSTRAINT_P((x), 'O', "On")
 
 /* Set the has_landing_pad_p flag in struct machine_function to VALUE.  */
 
@@ -1207,6 +1243,8 @@ s390_handle_arch_option (const char *arg,
       {"z900", PROCESSOR_2064_Z900, PF_IEEE_FLOAT | PF_ZARCH},
       {"z990", PROCESSOR_2084_Z990, PF_IEEE_FLOAT | PF_ZARCH
 				    | PF_LONG_DISPLACEMENT},
+      {"z9-109", PROCESSOR_2094_Z9_109, PF_IEEE_FLOAT | PF_ZARCH
+                                       | PF_LONG_DISPLACEMENT | PF_EXTIMM},
     };
   size_t i;
 
@@ -1293,14 +1331,14 @@ override_options (void)
   if (TARGET_64BIT && !TARGET_ZARCH)
     error ("64-bit ABI not supported in ESA/390 mode");
 
-
   /* Set processor cost function.  */
-  if (s390_tune == PROCESSOR_2084_Z990) 
+  if (s390_tune == PROCESSOR_2094_Z9_109)
+    s390_cost = &z9_109_cost;
+  else if (s390_tune == PROCESSOR_2084_Z990)
     s390_cost = &z990_cost;
   else
     s390_cost = &z900_cost;
-
-
+  
   if (TARGET_BACKCHAIN && TARGET_PACKED_STACK && TARGET_HARD_FLOAT)
     error ("-mbackchain -mpacked-stack -mhard-float are not supported "
 	   "in combination");
@@ -1876,6 +1914,28 @@ s390_const_ok_for_constraint_p (HOST_WIDE_INT value,
 
       break;
 
+    case 'O':
+      if (!TARGET_EXTIMM)
+	return 0;
+      
+      switch (str[1])
+	{
+	case 's':
+	  return trunc_int_for_mode (value, SImode) == value;
+	  
+	case 'p':
+	  return value == 0
+	    || s390_single_part (GEN_INT (value), DImode, SImode, 0) == 1;
+	  
+	case 'n':
+	  return value == -1
+	    || s390_single_part (GEN_INT (value), DImode, SImode, -1) == 1;
+	  
+	default:
+	  gcc_unreachable ();
+	}
+      break;
+
     case 'P':
       return legitimate_reload_constant_p (GEN_INT (value));
 
@@ -2307,9 +2367,9 @@ legitimate_reload_constant_p (rtx op)
       && DISP_IN_RANGE (INTVAL (op)))
     return true;
 
-  /* Accept l(g)hi operands.  */
+  /* Accept l(g)hi/l(g)fi operands.  */
   if (GET_CODE (op) == CONST_INT
-      && CONST_OK_FOR_K (INTVAL (op)))
+      && (CONST_OK_FOR_K (INTVAL (op)) || CONST_OK_FOR_Os (INTVAL (op))))
     return true;
 
   /* Accept lliXX operands.  */
@@ -2319,6 +2379,12 @@ legitimate_reload_constant_p (rtx op)
       && s390_single_part (op, word_mode, HImode, 0) >= 0)
   return true;
 
+  if (TARGET_EXTIMM
+      && GET_CODE (op) == CONST_INT
+      && trunc_int_for_mode (INTVAL (op), word_mode) == INTVAL (op)
+      && s390_single_part (op, word_mode, SImode, 0) >= 0)
+    return true;
+
   /* Accept larl operands.  */
   if (TARGET_CPU_ZARCH
       && larl_operand (op, VOIDmode))
@@ -4115,6 +4181,14 @@ print_operand (FILE *file, rtx x, int code)
       else if (code == 'j')
 	fprintf (file, HOST_WIDE_INT_PRINT_DEC,
 		 s390_extract_part (x, HImode, -1));
+      else if (code == 'k')
+ 	fprintf (file, HOST_WIDE_INT_PRINT_DEC,
+ 		 s390_extract_part (x, SImode, 0));
+      else if (code == 'm')
+ 	fprintf (file, HOST_WIDE_INT_PRINT_DEC,
+ 		 s390_extract_part (x, SImode, -1));
+      else if (code == 'o')
+	fprintf (file, HOST_WIDE_INT_PRINT_DEC, INTVAL (x) & 0xffffffff);
       else
         fprintf (file, HOST_WIDE_INT_PRINT_DEC, INTVAL (x));
       break;
@@ -4270,7 +4344,8 @@ s390_adjust_priority (rtx insn ATTRIBUTE_UNUSED, int priority)
   if (! INSN_P (insn))
     return priority;
 
-  if (s390_tune != PROCESSOR_2084_Z990)
+  if (s390_tune != PROCESSOR_2084_Z990
+      && s390_tune != PROCESSOR_2094_Z9_109)
     return priority;
 
   switch (s390_safe_attr_type (insn))
@@ -4294,7 +4369,8 @@ s390_adjust_priority (rtx insn ATTRIBUTE_UNUSED, int priority)
 static int
 s390_issue_rate (void)
 {
-  if (s390_tune == PROCESSOR_2084_Z990)
+  if (s390_tune == PROCESSOR_2084_Z990
+      || s390_tune == PROCESSOR_2094_Z9_109)
     return 3;
   return 1;
 }
@@ -7717,9 +7793,11 @@ s390_output_mi_thunk (FILE *file, tree thunk ATTRIBUTE_UNUSED,
     {
       /* Setup literal pool pointer if required.  */
       if ((!DISP_IN_RANGE (delta)
-	   && !CONST_OK_FOR_K (delta))
+	   && !CONST_OK_FOR_K (delta)
+	   && !CONST_OK_FOR_Os (delta))
 	  || (!DISP_IN_RANGE (vcall_offset)
-	      && !CONST_OK_FOR_K (vcall_offset)))
+	      && !CONST_OK_FOR_K (vcall_offset)
+	      && !CONST_OK_FOR_Os (vcall_offset)))
 	{
 	  op[5] = gen_label_rtx ();
 	  output_asm_insn ("larl\t%4,%5", op);
@@ -7734,6 +7812,8 @@ s390_output_mi_thunk (FILE *file, tree thunk ATTRIBUTE_UNUSED,
 	    output_asm_insn ("lay\t%1,%2(%1)", op);
 	  else if (CONST_OK_FOR_K (delta))
 	    output_asm_insn ("aghi\t%1,%2", op);
+ 	  else if (CONST_OK_FOR_Os (delta))
+ 	    output_asm_insn ("agfi\t%1,%2", op);
 	  else
 	    {
 	      op[6] = gen_label_rtx ();
@@ -7755,6 +7835,12 @@ s390_output_mi_thunk (FILE *file, tree thunk ATTRIBUTE_UNUSED,
 	      output_asm_insn ("ag\t%4,0(%1)", op);
 	      output_asm_insn ("ag\t%1,0(%4)", op);
 	    }
+ 	  else if (CONST_OK_FOR_Os (vcall_offset))
+ 	    {
+ 	      output_asm_insn ("lgfi\t%4,%3", op);
+ 	      output_asm_insn ("ag\t%4,0(%1)", op);
+ 	      output_asm_insn ("ag\t%1,0(%4)", op);
+ 	    }
 	  else
 	    {
 	      op[7] = gen_label_rtx ();
@@ -7792,9 +7878,11 @@ s390_output_mi_thunk (FILE *file, tree thunk ATTRIBUTE_UNUSED,
       /* Setup base pointer if required.  */
       if (!vcall_offset
 	  || (!DISP_IN_RANGE (delta)
-              && !CONST_OK_FOR_K (delta))
+              && !CONST_OK_FOR_K (delta)
+	      && !CONST_OK_FOR_Os (delta))
 	  || (!DISP_IN_RANGE (delta)
-              && !CONST_OK_FOR_K (vcall_offset)))
+              && !CONST_OK_FOR_K (vcall_offset)
+	      && !CONST_OK_FOR_Os (vcall_offset)))
 	{
 	  op[5] = gen_label_rtx ();
 	  output_asm_insn ("basr\t%4,0", op);
@@ -7811,6 +7899,8 @@ s390_output_mi_thunk (FILE *file, tree thunk ATTRIBUTE_UNUSED,
 	    output_asm_insn ("lay\t%1,%2(%1)", op);
 	  else if (CONST_OK_FOR_K (delta))
 	    output_asm_insn ("ahi\t%1,%2", op);
+	  else if (CONST_OK_FOR_Os (delta))
+ 	    output_asm_insn ("afi\t%1,%2", op);
 	  else
 	    {
 	      op[6] = gen_label_rtx ();
@@ -7837,6 +7927,12 @@ s390_output_mi_thunk (FILE *file, tree thunk ATTRIBUTE_UNUSED,
 	      output_asm_insn ("a\t%4,0(%1)", op);
 	      output_asm_insn ("a\t%1,0(%4)", op);
 	    }
+	  else if (CONST_OK_FOR_Os (vcall_offset))
+ 	    {
+ 	      output_asm_insn ("iilf\t%4,%3", op);
+ 	      output_asm_insn ("a\t%4,0(%1)", op);
+ 	      output_asm_insn ("a\t%1,0(%4)", op);
+ 	    }
 	  else
 	    {
 	      op[7] = gen_label_rtx ();

gcc/config/s390/s390.h

@@ -40,6 +40,7 @@ enum processor_type
   PROCESSOR_9672_G6,
   PROCESSOR_2064_Z900,
   PROCESSOR_2084_Z990,
+  PROCESSOR_2094_Z9_109,
   PROCESSOR_max
 };
 
@@ -49,7 +50,8 @@ enum processor_flags
 {
   PF_IEEE_FLOAT = 1,
   PF_ZARCH = 2,
-  PF_LONG_DISPLACEMENT = 4
+  PF_LONG_DISPLACEMENT = 4,
+  PF_EXTIMM = 8
 };
 
 extern enum processor_type s390_tune;
@@ -64,10 +66,13 @@ extern enum processor_flags s390_arch_flags;
 	(s390_arch_flags & PF_ZARCH)
 #define TARGET_CPU_LONG_DISPLACEMENT \
 	(s390_arch_flags & PF_LONG_DISPLACEMENT)
+#define TARGET_CPU_EXTIMM \
+ 	(s390_arch_flags & PF_EXTIMM)
 
 #define TARGET_LONG_DISPLACEMENT \
        (TARGET_ZARCH && TARGET_CPU_LONG_DISPLACEMENT)
-
+#define TARGET_EXTIMM \
+       (TARGET_ZARCH && TARGET_CPU_EXTIMM)
 
 /* Run-time target specification.  */
 
@@ -501,7 +506,8 @@ extern const enum reg_class regclass_map[FIRST_PSEUDO_REGISTER];
   ((C) == 'U' || (C) == 'W' || (C) == 'Y')
 
 #define CONSTRAINT_LEN(C, STR)                                  	\
-  ((C) == 'N' ? 5 : 							\
+  ((C) == 'N' ? 5 : 	                                                \
+   (C) == 'O' ? 2 :							\
    (C) == 'A' ? 2 :							\
    (C) == 'B' ? 2 : DEFAULT_CONSTRAINT_LEN ((C), (STR)))
 
@@ -980,6 +986,9 @@ do {									\
    indexing purposes) so give the MEM rtx a byte's mode.  */
 #define FUNCTION_MODE QImode
 
+/* Specify the value which is used when clz operand is zero.  */
+#define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) ((VALUE) = 64, 1)
+
 /* Machine-specific symbol_ref flags.  */
 #define SYMBOL_FLAG_ALIGN1	(SYMBOL_FLAG_MACH_DEP << 0)