Add range-ops support for builtin functions.

Convert CFN_BUILT_IN_CONSTANT_P as first POC.

	* gimple-range-fold.cc
	(fold_using_range::range_of_builtin_int_call): Remove case for
	CFN_BUILT_IN_CONSTANT_P.
	* gimple-range-op.cc (gimple_range_op_handler::supported_p):
	Check if a call also creates a range-op object.
	(gimple_range_op_handler): Also check builtin calls.
	(class cfn_constant_float_p): New.  Float CFN_BUILT_IN_CONSTANT_P.
	(class cfn_constant_p): New.  Integral CFN_BUILT_IN_CONSTANT_P.
	(gimple_range_op_handler::maybe_builtin_call): Set arguments and
	handler for supported built-in calls.
	* gimple-range-op.h (maybe_builtin_call): New prototype.

1 files changed, 0 insertions, 17 deletions

diff --git a/gcc/gimple-range-fold.cc b/gcc/gimple-range-fold.cc
index 4240825..63a1f51 100644
--- a/gcc/gimple-range-fold.cc
+++ b/gcc/gimple-range-fold.cc
@@ -944,23 +944,6 @@ fold_using_range::range_of_builtin_int_call (irange &r, gcall *call,
 
   switch (func)
     {
-    case CFN_BUILT_IN_CONSTANT_P:
-      {
-	arg = gimple_call_arg (call, 0);
-	Value_Range tmp (TREE_TYPE (arg));
-	if (src.get_operand (tmp, arg) && tmp.singleton_p ())
-	  {
-	    r.set (build_one_cst (type), build_one_cst (type));
-	    return true;
-	  }
-	if (cfun->after_inlining)
-	  {
-	    r.set_zero (type);
-	    return true;
-	  }
-	break;
-      }
-
     case CFN_BUILT_IN_SIGNBIT:
       {
 	arg = gimple_call_arg (call, 0);