GCSE: Use HOST_WIDE_INT instead of int (PR rtl-optimization/79574).

2017-03-03  Martin Liska  <mliska@suse.cz>

	PR rtl-optimization/79574
	* gcse.c (struct gcse_expr): Use HOST_WIDE_INT instead of int.
	(hash_scan_set): Likewise.
	(dump_hash_table): Likewise.
	(hoist_code): Likewise.
2017-03-03  Martin Liska  <mliska@suse.cz>

	PR rtl-optimization/79574
	* gcc.dg/pr79574-2.c: New test.

From-SVN: r245868

1 files changed, 16 insertions, 11 deletions

diff --git a/gcc/gcse.c b/gcc/gcse.c
index 5c6984c..38b9577 100644
--- a/gcc/gcse.c
+++ b/gcc/gcse.c
@@ -281,7 +281,7 @@ struct gcse_expr
      to keep register pressure under control.
      A value of "0" removes restrictions on how far the expression can
      travel.  */
-  int max_distance;
+  HOST_WIDE_INT max_distance;
 };
 
 /* Occurrence of an expression.
@@ -458,7 +458,7 @@ static int oprs_unchanged_p (const_rtx, const rtx_insn *, int);
 static int oprs_anticipatable_p (const_rtx, const rtx_insn *);
 static int oprs_available_p (const_rtx, const rtx_insn *);
 static void insert_expr_in_table (rtx, machine_mode, rtx_insn *, int, int,
-				  int, struct gcse_hash_table_d *);
+				  HOST_WIDE_INT, struct gcse_hash_table_d *);
 static unsigned int hash_expr (const_rtx, machine_mode, int *, int);
 static void record_last_reg_set_info (rtx_insn *, int);
 static void record_last_mem_set_info (rtx_insn *);
@@ -488,8 +488,10 @@ static void alloc_code_hoist_mem (int, int);
 static void free_code_hoist_mem (void);
 static void compute_code_hoist_vbeinout (void);
 static void compute_code_hoist_data (void);
-static int should_hoist_expr_to_dom (basic_block, struct gcse_expr *, basic_block,
-				     sbitmap, int, int *, enum reg_class,
+static int should_hoist_expr_to_dom (basic_block, struct gcse_expr *,
+				     basic_block,
+				     sbitmap, HOST_WIDE_INT, int *,
+				     enum reg_class,
 				     int *, bitmap, rtx_insn *);
 static int hoist_code (void);
 static enum reg_class get_regno_pressure_class (int regno, int *nregs);
@@ -743,7 +745,7 @@ static basic_block current_bb;
    GCSE.  */
 
 static int
-want_to_gcse_p (rtx x, machine_mode mode, int *max_distance_ptr)
+want_to_gcse_p (rtx x, machine_mode mode, HOST_WIDE_INT *max_distance_ptr)
 {
 #ifdef STACK_REGS
   /* On register stack architectures, don't GCSE constants from the
@@ -1115,7 +1117,8 @@ expr_equiv_p (const_rtx x, const_rtx y)
 static void
 insert_expr_in_table (rtx x, machine_mode mode, rtx_insn *insn,
 		      int antic_p,
-		      int avail_p, int max_distance, struct gcse_hash_table_d *table)
+		      int avail_p, HOST_WIDE_INT max_distance,
+		      struct gcse_hash_table_d *table)
 {
   int found, do_not_record_p;
   unsigned int hash;
@@ -1231,7 +1234,7 @@ hash_scan_set (rtx set, rtx_insn *insn, struct gcse_hash_table_d *table)
   else if (REG_P (dest))
     {
       unsigned int regno = REGNO (dest);
-      int max_distance = 0;
+      HOST_WIDE_INT max_distance = 0;
 
       /* See if a REG_EQUAL note shows this equivalent to a simpler expression.
 
@@ -1300,7 +1303,7 @@ hash_scan_set (rtx set, rtx_insn *insn, struct gcse_hash_table_d *table)
   else if (flag_gcse_las && REG_P (src) && MEM_P (dest))
     {
       unsigned int regno = REGNO (src);
-      int max_distance = 0;
+      HOST_WIDE_INT max_distance = 0;
 
       /* Only record sets of pseudo-regs in the hash table.  */
       if (regno >= FIRST_PSEUDO_REGISTER
@@ -1412,7 +1415,8 @@ dump_hash_table (FILE *file, const char *name, struct gcse_hash_table_d *table)
     if (flat_table[i] != 0)
       {
 	expr = flat_table[i];
-	fprintf (file, "Index %d (hash value %d; max distance %d)\n  ",
+	fprintf (file, "Index %d (hash value %d; max distance "
+		 HOST_WIDE_INT_PRINT_DEC ")\n  ",
 		 expr->bitmap_index, hash_val[i], expr->max_distance);
 	print_rtl (file, expr->expr);
 	fprintf (file, "\n");
@@ -2884,7 +2888,8 @@ update_bb_reg_pressure (basic_block bb, rtx_insn *from)
 
 static int
 should_hoist_expr_to_dom (basic_block expr_bb, struct gcse_expr *expr,
-			  basic_block bb, sbitmap visited, int distance,
+			  basic_block bb, sbitmap visited,
+			  HOST_WIDE_INT distance,
 			  int *bb_size, enum reg_class pressure_class,
 			  int *nregs, bitmap hoisted_bbs, rtx_insn *from)
 {
@@ -3161,7 +3166,7 @@ hoist_code (void)
 		 computes the expression.  */
 	      FOR_EACH_VEC_ELT (domby, j, dominated)
 		{
-		  int max_distance;
+		  HOST_WIDE_INT max_distance;
 
 		  /* Ignore self dominance.  */
 		  if (bb == dominated)