arm.c (require_pic_register): Handle high pic base register for thumb-1.

arm.c (require_pic_register): Handle high pic base register for thumb-1.

gcc/ChangeLog
2013-11-26  Terry Guo  <terry.guo@arm.com>

	* config/arm/arm.c (require_pic_register): Handle high pic base
	register for thumb-1.
	(arm_load_pic_register): Also initialize high pic base register.
	* doc/invoke.texi: Update documentation for option -mpic-register.

gcc/testsuite/ChangeLog
2013-11-26  Terry Guo  <terry.guo@arm.com>

	* gcc.target/arm/thumb1-pic-high-reg.c: New case.
	* gcc.target/arm/thumb1-pic-single-base.c: New case.

From-SVN: r205391