Re: [Qemu-devel] [PATCH 03/26] target/s390x: implement TEST AND SET

[Richard Henderson]

On 05/25/2017 02:04 PM, Aurelien Jarno wrote:

+    TCGv_i32 t1 = tcg_const_i32(0xff);
+    tcg_gen_atomic_fetch_or_i32(t1, o->in2, t1, get_mem_index(s), MO_UB);

Better as tcg_gen_atomic_xchg_i32.


r~