gcc/

	* doc/sourcebuild.texi (pie_enabled): Document.

gcc/testsuite/

	* lib/target-supports.exp (check_effective_target_pie): Renamed
	to ...
	(check_effective_target_pie_enabled): This.
	* gcc.dg/tree-ssa/ssa-store-ccp-3.c: Replace pie with pie_enabled.
	* gcc.target/i386/pie.c: Likewise.

From-SVN: r220618