Backport from mainline
	2014-10-09  Uros Bizjak  <ubizjak@gmail.com>

	PR rtl-optimization/57003
	* regcprop.c (copyprop_hardreg_forward_1): If ksvd.ignore_set_reg,
	also check CALL_INSN_FUNCTION_USAGE for clobbers again after
	killing regs_invalidated_by_call.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_9-branch@216030 138bc75d-0d04-0410-961f-82ee72b054a4