fold-const.c (fold_div_compare): New function to optimize X/C1 op C2 where op is a comparison operator and C1...


	* fold-const.c (fold_div_compare): New function to optimize X/C1 op C2
	where op is a comparison operator and C1 and C2 are integer constants
	into a range check.
	(fold): Call fold_div_compare.

	* gcc.c-torture/execute/divcmp-1.c: New test case.
	* gcc.c-torture/execute/divcmp-2.c: New test case.
	* gcc.c-torture/execute/divcmp-3.c: New test case.

From-SVN: r81645