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	Revert
	2011-01-25  Jeff Law  <law@redhat.com>

	PR rtl-optimization/37273
	* ira-costs.c (scan_one_insn): Detect constants living in memory and
	handle them like argument loads from stack slots.  Do not double
	count memory for memory constants and argument loads from stack slots.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@170199 138bc75d-0d04-0410-961f-82ee72b054a4