gimple-loop-versioning.cc (loop_versioning::prune_loop_conditions): Make value_range * temporary const.

2019-07-25  Richard Biener  <rguenther@suse.de>

	* gimple-loop-versioning.cc (loop_versioning::prune_loop_conditions):
	Make value_range * temporary const.
	* gimple-ssa-evrp-analyze.c (evrp_range_analyzer::try_find_new_range):
	Likewise.
	(evrp_range_analyzer::record_ranges_from_): Likewise.
	(evrp_range_analyzer::pop_value_range): Return a const value_range *,
	deal with having recorded a const one.
	* gimple-ssa-evrp-analyze.h (evrp_range_analyzer::get_value_range):
	Return a const value_range *.
	(evrp_range_analyzer::pop_value_range): Likewise.
	(evrp_range_analyzer::stack): Record const value_range *s.
	* gimple-ssa-evrp.c (evrp_dom_walker::before_dom_children):
	Adjust.
	* gimple-ssa-sprintf.c (get_int_range): Likewise.
	(format_integer): Likewise.
	(sprintf_dom_walker::handle_gimple_call): Likewise.
	* tree-ssa-dom.c (simplify_stmt_for_jump_threading): Likewise.
	* tree-vrp.c (vrp_prop::set_def_to_varying): Add.
	(vrp_prop::get_value_range): Adjust.
	(vrp_prop::vrp_initialize): Use set_def_to_varying instead of
	modifying the lattice in-place.
	(vrp_prop::visit_stmt): Likewise.
	* vr-values.c (vr_values::get_lattice_entry): New private method.
	(vr_values::get_value_range): Wrap it and return a const
	value_range *.
	(vr_values::set_def_to_varying): New.
	(vr_values::set_defs_to_varying): Use it.
	(vr_values::update_value_range): Likewise.
	(vr_values::vrp_stmt_computes_nonzero): Adjust.
	(values::op_with_constant_singleton_va): Likewise.
	(vr_values::extract_range_for_var_from_co): Likewise.
	(vr_values::extract_range_from_ssa_name): Likewise.
	(vr_values::extract_range_from_cond_expr): Likewise.
	(vr_values::extract_range_basic): Likewise.
	(compare_ranges): Take const value_range *, adjust.
	(compare_range_with_value): Likewise.
	(vrp_valueize): Adjust.
	(vrp_valueize_1): Likewise.
	(vr_values::get_vr_for_comparison): Return a const value_range *.
	(vr_values::compare_name_with_value): Adjust.
	(vr_values::compare_names): Likewise.
	(vr_values::vrp_evaluate_conditional_warnv_with_ops_using_ranges):
	Likewise.
	(vr_values::vrp_evaluate_conditional): Likewise.
	(find_case_label_ranges): Take a const value_range *.
	(vr_values::vrp_visit_switch_stmt): Adjust.
	(vr_values::extract_range_from_phi_node): Likewise.
	(vr_values::simplify_div_or_mod_using_ran): Likewise.
	(vr_values::simplify_abs_using_ranges): Likewise.
	(test_for_singularity): Take a const value_range *.
	(range_fits_type_p): Likewise.
	(vr_values::simplify_cond_using_ranges_1): Adjust.
	(vr_values::simplify_cond_using_ranges_2): Likewise.
	(vr_values::simplify_switch_using_ranges): Likewise.
	(vr_values::simplify_float_conversion_usi): Likewise.
	(vr_values::two_valued_val_range_p): Likewise.
	* vr-values.h (vr_values::get_value_range): Return a const
	value_range *.
	(vr_values::set_def_to_varying): New.
	(vr_values::get_lattice_entry): New private method.
	(vr_values::get_vr_for_comparison): Return a const value_range *.

From-SVN: r273792

1 files changed, 6 insertions, 4 deletions

diff --git a/gcc/tree-vrp.c b/gcc/tree-vrp.c
index b79dfb2..add6ad5 100644
--- a/gcc/tree-vrp.c
+++ b/gcc/tree-vrp.c
@@ -4292,10 +4292,12 @@ class vrp_prop : public ssa_propagation_engine
 
   class vr_values vr_values;
   /* Temporary delegator to minimize code churn.  */
-  value_range *get_value_range (const_tree op)
+  const value_range *get_value_range (const_tree op)
     { return vr_values.get_value_range (op); }
+  void set_def_to_varying (const_tree def)
+    { vr_values.set_def_to_varying (def); }
   void set_defs_to_varying (gimple *stmt)
-    { return vr_values.set_defs_to_varying (stmt); }
+    { vr_values.set_defs_to_varying (stmt); }
   void extract_range_from_stmt (gimple *stmt, edge *taken_edge_p,
 				tree *output_p, value_range *vr)
     { vr_values.extract_range_from_stmt (stmt, taken_edge_p, output_p, vr); }
@@ -5148,7 +5150,7 @@ vrp_prop::vrp_initialize ()
 	  if (!stmt_interesting_for_vrp (phi))
 	    {
 	      tree lhs = PHI_RESULT (phi);
-	      get_value_range (lhs)->set_varying ();
+	      set_def_to_varying (lhs);
 	      prop_set_simulate_again (phi, false);
 	    }
 	  else
@@ -5343,7 +5345,7 @@ vrp_prop::visit_stmt (gimple *stmt, edge *taken_edge_p, tree *output_p)
 	    use_operand_p use_p;
 	    enum ssa_prop_result res = SSA_PROP_VARYING;
 
-	    get_value_range (lhs)->set_varying ();
+	    set_def_to_varying (lhs);
 
 	    FOR_EACH_IMM_USE_FAST (use_p, iter, lhs)
 	      {