[AArch64][testsuite] Adjust some arith+compare tests for potentially more aggressive if-conversion

	* gcc.target/aarch64/adds3.c: Adjust for more aggressive
	if-conversion..
	* gcc.target/aarch64/adds1.c: Likewise.
	* gcc.target/aarch64/ands_1.c: Likewise.
	* gcc.target/aarch64/bics_1.c: Likewise.
	* gcc.target/aarch64/subs1.c: Likewise.
	* gcc.target/aarch64/subs3.c: Likewise.

From-SVN: r225732