combine.c (record_dead_and_set_regs): Iterate over hard register set with a hard_reg_set_iterator.

	* combine.c (record_dead_and_set_regs): Iterate over hard register set
	with a hard_reg_set_iterator.
	* cse.c (invalidate_for_call): Likewise.
	* gcse.c (compute_hash_table_work): Likewise.
	* loop-iv.c (simplify_using_initial_values): Likewise.
	* postreload-gcse.c (record_opr_changes): Likewise.
	* regcprop.c (copyprop_hardreg_forward_1): Likewise.
	* var-tracking.c (dataflow_set_clear_at_call): Likewise.

From-SVN: r192490

gcc/ChangeLog

+2012-10-16  Steven Bosscher  <steven@gcc.gnu.org>
+
+	* combine.c (record_dead_and_set_regs): Iterate over hard register set
+	with a hard_reg_set_iterator.
+	* cse.c (invalidate_for_call): Likewise.
+	* gcse.c (compute_hash_table_work): Likewise.
+	* loop-iv.c (simplify_using_initial_values): Likewise.
+	* postreload-gcse.c (record_opr_changes): Likewise.
+	* regcprop.c (copyprop_hardreg_forward_1): Likewise.
+	* var-tracking.c (dataflow_set_clear_at_call): Likewise.
+
 2012-10-15   Easwaran Raman  <eraman@google.com>
 
 	* optabs.c (emit_cmp_and_jump_insn_1): Add a new parameter to

gcc/combine.c

@@ -12317,21 +12317,21 @@ record_dead_and_set_regs (rtx insn)
 
   if (CALL_P (insn))
     {
-      for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
-	if (TEST_HARD_REG_BIT (regs_invalidated_by_call, i))
-	  {
-	    reg_stat_type *rsp;
-
-	    rsp = &VEC_index (reg_stat_type, reg_stat, i);
-	    rsp->last_set_invalid = 1;
-	    rsp->last_set = insn;
-	    rsp->last_set_value = 0;
-	    rsp->last_set_mode = VOIDmode;
-	    rsp->last_set_nonzero_bits = 0;
-	    rsp->last_set_sign_bit_copies = 0;
-	    rsp->last_death = 0;
-	    rsp->truncated_to_mode = VOIDmode;
-	  }
+      hard_reg_set_iterator hrsi;
+      EXECUTE_IF_SET_IN_HARD_REG_SET (regs_invalidated_by_call, 0, i, hrsi)
+	{
+	  reg_stat_type *rsp;
+
+	  rsp = &VEC_index (reg_stat_type, reg_stat, i);
+	  rsp->last_set_invalid = 1;
+	  rsp->last_set = insn;
+	  rsp->last_set_value = 0;
+	  rsp->last_set_mode = VOIDmode;
+	  rsp->last_set_nonzero_bits = 0;
+	  rsp->last_set_sign_bit_copies = 0;
+	  rsp->last_death = 0;
+	  rsp->truncated_to_mode = VOIDmode;
+	}
 
       last_call_luid = mem_last_set = DF_INSN_LUID (insn);
 

gcc/cse.c

@@ -2096,24 +2096,22 @@ invalidate_for_call (void)
   unsigned hash;
   struct table_elt *p, *next;
   int in_table = 0;
+  hard_reg_set_iterator hrsi;
 
   /* Go through all the hard registers.  For each that is clobbered in
      a CALL_INSN, remove the register from quantity chains and update
      reg_tick if defined.  Also see if any of these registers is currently
      in the table.  */
-
-  for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
-    if (TEST_HARD_REG_BIT (regs_invalidated_by_call, regno))
-      {
-	delete_reg_equiv (regno);
-	if (REG_TICK (regno) >= 0)
-	  {
-	    REG_TICK (regno)++;
-	    SUBREG_TICKED (regno) = -1;
-	  }
-
-	in_table |= (TEST_HARD_REG_BIT (hard_regs_in_table, regno) != 0);
-      }
+  EXECUTE_IF_SET_IN_HARD_REG_SET (regs_invalidated_by_call, 0, regno, hrsi)
+    {
+      delete_reg_equiv (regno);
+      if (REG_TICK (regno) >= 0)
+	{
+	  REG_TICK (regno)++;
+	  SUBREG_TICKED (regno) = -1;
+	}
+      in_table |= (TEST_HARD_REG_BIT (hard_regs_in_table, regno) != 0);
+    }
 
   /* In the case where we have no call-clobbered hard registers in the
      table, we are done.  Otherwise, scan the table and remove any

gcc/gcse.c

@@ -1519,9 +1519,10 @@ compute_hash_table_work (struct hash_table_d *table)
 
 	  if (CALL_P (insn))
 	    {
-	      for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
-		if (TEST_HARD_REG_BIT (regs_invalidated_by_call, regno))
-		  record_last_reg_set_info (insn, regno);
+	      hard_reg_set_iterator hrsi;
+	      EXECUTE_IF_SET_IN_HARD_REG_SET (regs_invalidated_by_call,
+					      0, regno, hrsi)
+		record_last_reg_set_info (insn, regno);
 
 	      if (! RTL_CONST_OR_PURE_CALL_P (insn))
 		record_last_mem_set_info (insn);

gcc/loop-iv.c

@@ -1964,12 +1964,12 @@ simplify_using_initial_values (struct loop *loop, enum rtx_code op, rtx *expr)
 	  note_stores (PATTERN (insn), mark_altered, this_altered);
 	  if (CALL_P (insn))
 	    {
-	      int i;
-
 	      /* Kill all call clobbered registers.  */
-	      for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
-		if (TEST_HARD_REG_BIT (regs_invalidated_by_call, i))
-		  SET_REGNO_REG_SET (this_altered, i);
+	      unsigned int i;
+	      hard_reg_set_iterator hrsi;
+	      EXECUTE_IF_SET_IN_HARD_REG_SET (regs_invalidated_by_call,
+					      0, i, hrsi)
+		SET_REGNO_REG_SET (this_altered, i);
 	    }
 
 	  if (suitable_set_for_replacement (insn, &dest, &src))

gcc/postreload-gcse.c

@@ -736,10 +736,9 @@ record_opr_changes (rtx insn)
     {
       unsigned int regno;
       rtx link, x;
-
-      for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++)
-	if (TEST_HARD_REG_BIT (regs_invalidated_by_call, regno))
-	  record_last_reg_set_info_regno (insn, regno);
+      hard_reg_set_iterator hrsi;
+      EXECUTE_IF_SET_IN_HARD_REG_SET (regs_invalidated_by_call, 0, regno, hrsi)
+	record_last_reg_set_info_regno (insn, regno);
 
       for (link = CALL_INSN_FUNCTION_USAGE (insn); link; link = XEXP (link, 1))
 	if (GET_CODE (XEXP (link, 0)) == CLOBBER)

gcc/regcprop.c

@@ -990,9 +990,12 @@ copyprop_hardreg_forward_1 (basic_block bb, struct value_data *vd)
       /* Clobber call-clobbered registers.  */
       if (CALL_P (insn))
 	{
-	  int set_regno = INVALID_REGNUM;
-	  int set_nregs = 0;
+	  unsigned int set_regno = INVALID_REGNUM;
+	  unsigned int set_nregs = 0;
+	  unsigned int regno;
 	  rtx exp;
+	  hard_reg_set_iterator hrsi;
+
 	  for (exp = CALL_INSN_FUNCTION_USAGE (insn); exp; exp = XEXP (exp, 1))
 	    {
 	      rtx x = XEXP (exp, 0);
@@ -1009,10 +1012,10 @@ copyprop_hardreg_forward_1 (basic_block bb, struct value_data *vd)
 		  break;
 		}
 	    }
-	  for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
-	    if (TEST_HARD_REG_BIT (regs_invalidated_by_call, i)
-		&& (i < set_regno || i >= set_regno + set_nregs))
-	      kill_value_regno (i, 1, vd);
+
+	  EXECUTE_IF_SET_IN_HARD_REG_SET (regs_invalidated_by_call, 0, regno, hrsi)
+	    if (regno < set_regno || regno >= set_regno + set_nregs)
+	      kill_value_regno (regno, 1, vd);
 	}
 
       /* Notice stores.  */

gcc/var-tracking.c

@@ -4680,11 +4680,11 @@ dataflow_set_remove_mem_locs (void **slot, void *data)
 static void
 dataflow_set_clear_at_call (dataflow_set *set)
 {
-  int r;
+  unsigned int r;
+  hard_reg_set_iterator hrsi;
 
-  for (r = 0; r < FIRST_PSEUDO_REGISTER; r++)
-    if (TEST_HARD_REG_BIT (regs_invalidated_by_call, r))
-      var_regno_delete (set, r);
+  EXECUTE_IF_SET_IN_HARD_REG_SET (regs_invalidated_by_call, 0, r, hrsi)
+    var_regno_delete (set, r);
 
   if (MAY_HAVE_DEBUG_INSNS)
     {