PR testsuite/48283
	* gcc.dg/graphite/block-3.c: Add dg-require-effective-target
	run_expensive_tests.
	* gcc.dg/graphite/block-4.c: Likewise.
	* gcc.dg/graphite/block-7.c: Likewise.
	* gcc.dg/graphite/block-8.c: Likewise.

From-SVN: r171451