* gcc.c-torture/execute/pr28651.c (main): Use INT_MAX instead of
	  assuming it is 0x7fffffff.
	* gcc.dg/tree-ssa/vrp29.c (decCompare)(main): Likewise.
	* gcc.dg/Wconversion-integer-no-sign.c (h): Likewise.

From-SVN: r126989