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-rw-r--r--tools/memory-model/litmus-tests/ISA2+poonceonces.litmus37
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diff --git a/tools/memory-model/litmus-tests/ISA2+poonceonces.litmus b/tools/memory-model/litmus-tests/ISA2+poonceonces.litmus
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+++ b/tools/memory-model/litmus-tests/ISA2+poonceonces.litmus
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+C ISA2+poonceonces
+
+(*
+ * Result: Sometimes
+ *
+ * Given a release-acquire chain ordering the first process's store
+ * against the last process's load, is ordering preserved if all of the
+ * smp_store_release() invocations are replaced by WRITE_ONCE() and all
+ * of the smp_load_acquire() invocations are replaced by READ_ONCE()?
+ *)
+
+{}
+
+P0(int *x, int *y)
+{
+ WRITE_ONCE(*x, 1);
+ WRITE_ONCE(*y, 1);
+}
+
+P1(int *y, int *z)
+{
+ int r0;
+
+ r0 = READ_ONCE(*y);
+ WRITE_ONCE(*z, 1);
+}
+
+P2(int *x, int *z)
+{
+ int r0;
+ int r1;
+
+ r0 = READ_ONCE(*z);
+ r1 = READ_ONCE(*x);
+}
+
+exists (1:r0=1 /\ 2:r0=1 /\ 2:r1=0)