Add effective target stack_size

Add effective target stack_size

2017-06-10  Tom de Vries  <tom@codesourcery.com>

	* lib/target-supports.exp (check_effective_target_stack_size)
	(dg-effective-target-value): New proc.
	* lib/gcc.exp (gcc_target_compile): Remove adding of DSTACK_SIZE to
	additional_flags.
	* lib/objc.exp (objc_target_compile): Same.
	* lib/profopt.exp (profopt-get-options): Allow dg-additional-options.
	* g++.old-deja/g++.eh/badalloc1.C: Add -DSTACK_SIZE=<value> using
	dg-additional-options.
	* gcc.c-torture/compile/20080806-1.c: Same.
	* gcc.c-torture/compile/920723-1.c: Same.
	* gcc.c-torture/compile/930621-1.c: Same.
	* gcc.c-torture/compile/991214-2.c: Same.
	* gcc.c-torture/compile/bcopy.c: Same.
	* gcc.c-torture/compile/memtst.c: Same.
	* gcc.c-torture/compile/msp.c: Same.
	* gcc.c-torture/compile/stuct.c: Same.
	* gcc.c-torture/execute/20011008-3.c: Same.
	* gcc.c-torture/execute/20030209-1.c: Same.
	* gcc.c-torture/execute/20031012-1.c: Same.
	* gcc.c-torture/execute/20040805-1.c: Same.
	* gcc.c-torture/execute/920410-1.c: Same.
	* gcc.c-torture/execute/920501-7.c: Same.
	* gcc.c-torture/execute/921113-1.c: Same.
	* gcc.c-torture/execute/921202-1.c: Same.
	* gcc.c-torture/execute/921208-2.c: Same.
	* gcc.c-torture/execute/930106-1.c: Same.
	* gcc.c-torture/execute/930406-1.c: Same.
	* gcc.c-torture/execute/950221-1.c: Same.
	* gcc.c-torture/execute/960521-1.c: Same.
	* gcc.c-torture/execute/980605-1.c: Same.
	* gcc.c-torture/execute/comp-goto-1.c: Same.
	* gcc.c-torture/execute/comp-goto-2.c: Same.
	* gcc.c-torture/execute/memcpy-1.c: Same.
	* gcc.c-torture/execute/multi-ix.c: Same.
	* gcc.c-torture/execute/nestfunc-4.c: Same.
	* gcc.c-torture/execute/pr20621-1.c: Same.
	* gcc.c-torture/execute/pr23135.c: Same.
	* gcc.c-torture/execute/pr28982b.c: Same.
	* gcc.dg/loop-3.c: Same.
	* gcc.dg/struct-ret-3.c: Same.
	* gcc.dg/torture/stackalign/comp-goto-1.c: Same.
	* gcc.dg/torture/stackalign/non-local-goto-4.c: Same.
	* gcc.dg/tree-prof/comp-goto-1.c: Same.
	* gcc.dg/tree-prof/pr44777.c: Same.

	* doc/sourcebuild.texi (Effective-Target Keywords, Other attributes):
	Document effective target stack_size.

From-SVN: r249090