* lib/target-supports.exp (check_effective_target_dfp_nocache,

	check_effective_target_dfprt_nocache): New.
	(check_effective_target_dfp): Use check_effective_target_dfp_nocache.
	(check_effective_target_dfprt): New.
	* lib/c-compat.exp (check_dfp): Remove.
	(compat_dfp_setup): Use check_effective_target_dfprt_nocache.
	* gcc.dg/dfp/dfp.exp: Compile, execute, or skip tests based on
	level of support for decimal float.
	* gcc.dg/dfp/call-by-value.c, cast.c, compare-eq-const.c,
	compare-eq-d128.c, compare-eq-d32.c, compare-eq-d64.c,
	compare-eq-dfp.c, compare-rel-const.c, compare-rel-d128.c,
	compare-rel-d32.c, compare-rel-d64.c, compare-rel-dfp.c,
	convert-bfp.c, convert-bfp-fold.c, convert-complex.c, convert-dfp.c,
	convert-dfp-fold.c, convert-dfp-round.c, convert-int-fold.c,
	convert-int-saturate.c, func-array.c, func-mixed.c, func-scalar.c,
	func-struct.c, func-vararg-dfp.c, func-vararg-mixed.c,
	func-vararg-size0.c, inf-1.c, loop-index.c, nan-1.c, nan-2.c,
	operator-arith-fold.c, operator-assignment.c, operator-comma.c,
	operator-cond.c, operator-logical.c, operator-unary.c, snan.c,
	struct-layout-1.c, union-init.c, usual-arith-conv.c: Remove dg-do
	directives.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@109779 138bc75d-0d04-0410-961f-82ee72b054a4

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