ldmstm.md (ldm2_ia, [...]): Add condition !arm_arch7 to these insns.

	* config/arm/ldmstm.md (ldm2_ia, stm2_ia, ldm2_ib, stm2_ib, ldm2_da,
	stm2_da, ldm2_db, stm2_db): Add condition !arm_arch7 to these insns.
	(ldrd, ldrd_reg1, ldrd_reg2 and peephole2): New insn patterns and
	related peephole2.
	(strd, strd_reg1, strd_reg2 and peephole2): New insn patterns and
	related peephole2.

	* config/arm/arm-protos.h (arm_check_ldrd_operands): New prototype.
	(arm_legitimate_ldrd_p): New prototype.
	(arm_output_ldrd): New prototype.

	* config/arm/arm.c (arm_check_ldrd_operands): New function.
	(arm_legitimate_ldrd_p): New function.
	(arm_output_ldrd): New function.

	* gcc.target/arm/pr45335.c: New test.

	* gcc.target/arm/pr45335-2.c: New test.

	* gcc.target/arm/pr45335-3.c: New test.

	* gcc.target/arm/pr40457-1.c: Add another possible output "ldrd".

	* gcc.target/arm/pr40457-2.c: Changed to store 3 words.

	* gcc.target/arm/pr40457-3.c: Changed to store 3 words.

From-SVN: r174940