gcc/

	PR rtl-optimization/64151
	PR rtl-optimization/64156
	* ira-costs.c (scan_one_insn): Revert r218266.

gcc/testsuite/

	PR rtl-optimization/64151
	PR rtl-optimization/64156
	* gcc.target/aarch64/remat1.c: Removed.  Revert r218267.

From-SVN: r218312