gcc/

	gcc/
	Backport from trunk r238254, r238763.
	2016-07-12  Nathan Sidwell  <nathan@acm.org>

	* config/arm/arm.c (arm_option_override): Set MASK_SINGLE_PIC_BASE
	when -mno-pic-data-is-text-relative is in effect, by default.
	* doc/invoke.texi (mpic-data-is-text-relative): Document new
	behavior and clarify.

	gcc/testsuite/
	Backport from trunk r238254, r238763.
	2016-07-12  Nathan Sidwell  <nathan@acm.org>

	* gcc.target/arm/data-rel-1.c: New.
	* gcc.target/arm/data-rel-2.c: New.
	* gcc.target/arm/data-rel-3.c: New.

Change-Id: Ic060a8302c039cf67a098618a539c14cd3589e23