From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- .../S+fencewmbonceonce+poacquireonce.litmus | 27 ++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 tools/memory-model/litmus-tests/S+fencewmbonceonce+poacquireonce.litmus (limited to 'tools/memory-model/litmus-tests/S+fencewmbonceonce+poacquireonce.litmus') 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 000000000..18479823c --- /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) -- cgit v1.2.3