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Diffstat (limited to 'tools/memory-model/litmus-tests/S+fencewmbonceonce+poacquireonce.litmus')
| -rw-r--r-- | tools/memory-model/litmus-tests/S+fencewmbonceonce+poacquireonce.litmus | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/tools/memory-model/litmus-tests/S+fencewmbonceonce+poacquireonce.litmus b/tools/memory-model/litmus-tests/S+fencewmbonceonce+poacquireonce.litmus new file mode 100644 index 0000000000..18479823cd --- /dev/null +++ b/tools/memory-model/litmus-tests/S+fencewmbonceonce+poacquireonce.litmus @@ -0,0 +1,27 @@ +C S+fencewmbonceonce+poacquireonce + +(* + * Result: Never + * + * Can a smp_wmb(), instead of a release, and an acquire order a prior + * store against a subsequent store? + *) + +{} + +P0(int *x, int *y) +{ + WRITE_ONCE(*x, 2); + smp_wmb(); + WRITE_ONCE(*y, 1); +} + +P1(int *x, int *y) +{ + int r0; + + r0 = smp_load_acquire(y); + WRITE_ONCE(*x, 1); +} + +exists (x=2 /\ 1:r0=1) |