xref: /openbmc/linux/tools/memory-model/litmus-tests/LB+poonceonces.litmus (revision d0034a7a4ac7fae708146ac0059b9c47a1543f0d)
11c27b644SPaul E. McKenneyC LB+poonceonces
21c27b644SPaul E. McKenney
38f32543bSPaul E. McKenney(*
48f32543bSPaul E. McKenney * Result: Sometimes
58f32543bSPaul E. McKenney *
68f32543bSPaul E. McKenney * Can the counter-intuitive outcome for the load-buffering pattern
78f32543bSPaul E. McKenney * be prevented even with no explicit ordering?
88f32543bSPaul E. McKenney *)
98f32543bSPaul E. McKenney
10*5c587f9bSAkira Yokosawa{}
111c27b644SPaul E. McKenney
121c27b644SPaul E. McKenneyP0(int *x, int *y)
131c27b644SPaul E. McKenney{
141c27b644SPaul E. McKenney	int r0;
151c27b644SPaul E. McKenney
161c27b644SPaul E. McKenney	r0 = READ_ONCE(*x);
171c27b644SPaul E. McKenney	WRITE_ONCE(*y, 1);
181c27b644SPaul E. McKenney}
191c27b644SPaul E. McKenney
201c27b644SPaul E. McKenneyP1(int *x, int *y)
211c27b644SPaul E. McKenney{
221c27b644SPaul E. McKenney	int r0;
231c27b644SPaul E. McKenney
241c27b644SPaul E. McKenney	r0 = READ_ONCE(*y);
251c27b644SPaul E. McKenney	WRITE_ONCE(*x, 1);
261c27b644SPaul E. McKenney}
271c27b644SPaul E. McKenney
281c27b644SPaul E. McKenneyexists (0:r0=1 /\ 1:r0=1)
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