From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:02:58 +0200
Subject: Adding upstream version 1.64.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/test/ui/intrinsics/intrinsic-atomics.rs | 102 ++++++++++++++++++++++++++++
 1 file changed, 102 insertions(+)
 create mode 100644 src/test/ui/intrinsics/intrinsic-atomics.rs

(limited to 'src/test/ui/intrinsics/intrinsic-atomics.rs')

diff --git a/src/test/ui/intrinsics/intrinsic-atomics.rs b/src/test/ui/intrinsics/intrinsic-atomics.rs
new file mode 100644
index 000000000..b17f4347b
--- /dev/null
+++ b/src/test/ui/intrinsics/intrinsic-atomics.rs
@@ -0,0 +1,102 @@
+// run-pass
+#![feature(intrinsics)]
+
+mod rusti {
+    extern "rust-intrinsic" {
+        pub fn atomic_cxchg_seqcst_seqcst<T>(dst: *mut T, old: T, src: T) -> (T, bool);
+        pub fn atomic_cxchg_acquire_acquire<T>(dst: *mut T, old: T, src: T) -> (T, bool);
+        pub fn atomic_cxchg_release_relaxed<T>(dst: *mut T, old: T, src: T) -> (T, bool);
+
+        pub fn atomic_cxchgweak_seqcst_seqcst<T>(dst: *mut T, old: T, src: T) -> (T, bool);
+        pub fn atomic_cxchgweak_acquire_acquire<T>(dst: *mut T, old: T, src: T) -> (T, bool);
+        pub fn atomic_cxchgweak_release_relaxed<T>(dst: *mut T, old: T, src: T) -> (T, bool);
+
+        pub fn atomic_load_seqcst<T>(src: *const T) -> T;
+        pub fn atomic_load_acquire<T>(src: *const T) -> T;
+
+        pub fn atomic_store_seqcst<T>(dst: *mut T, val: T);
+        pub fn atomic_store_release<T>(dst: *mut T, val: T);
+
+        pub fn atomic_xchg_seqcst<T>(dst: *mut T, src: T) -> T;
+        pub fn atomic_xchg_acquire<T>(dst: *mut T, src: T) -> T;
+        pub fn atomic_xchg_release<T>(dst: *mut T, src: T) -> T;
+
+        pub fn atomic_xadd_seqcst<T>(dst: *mut T, src: T) -> T;
+        pub fn atomic_xadd_acquire<T>(dst: *mut T, src: T) -> T;
+        pub fn atomic_xadd_release<T>(dst: *mut T, src: T) -> T;
+
+        pub fn atomic_xsub_seqcst<T>(dst: *mut T, src: T) -> T;
+        pub fn atomic_xsub_acquire<T>(dst: *mut T, src: T) -> T;
+        pub fn atomic_xsub_release<T>(dst: *mut T, src: T) -> T;
+    }
+}
+
+pub fn main() {
+    unsafe {
+        let mut x: Box<_> = Box::new(1);
+
+        assert_eq!(rusti::atomic_load_seqcst(&*x), 1);
+        *x = 5;
+        assert_eq!(rusti::atomic_load_acquire(&*x), 5);
+
+        rusti::atomic_store_seqcst(&mut *x,3);
+        assert_eq!(*x, 3);
+        rusti::atomic_store_release(&mut *x,1);
+        assert_eq!(*x, 1);
+
+        assert_eq!(rusti::atomic_cxchg_seqcst_seqcst(&mut *x, 1, 2), (1, true));
+        assert_eq!(*x, 2);
+
+        assert_eq!(rusti::atomic_cxchg_acquire_acquire(&mut *x, 1, 3), (2, false));
+        assert_eq!(*x, 2);
+
+        assert_eq!(rusti::atomic_cxchg_release_relaxed(&mut *x, 2, 1), (2, true));
+        assert_eq!(*x, 1);
+
+        assert_eq!(rusti::atomic_xchg_seqcst(&mut *x, 0), 1);
+        assert_eq!(*x, 0);
+
+        assert_eq!(rusti::atomic_xchg_acquire(&mut *x, 1), 0);
+        assert_eq!(*x, 1);
+
+        assert_eq!(rusti::atomic_xchg_release(&mut *x, 0), 1);
+        assert_eq!(*x, 0);
+
+        assert_eq!(rusti::atomic_xadd_seqcst(&mut *x, 1), 0);
+        assert_eq!(rusti::atomic_xadd_acquire(&mut *x, 1), 1);
+        assert_eq!(rusti::atomic_xadd_release(&mut *x, 1), 2);
+        assert_eq!(*x, 3);
+
+        assert_eq!(rusti::atomic_xsub_seqcst(&mut *x, 1), 3);
+        assert_eq!(rusti::atomic_xsub_acquire(&mut *x, 1), 2);
+        assert_eq!(rusti::atomic_xsub_release(&mut *x, 1), 1);
+        assert_eq!(*x, 0);
+
+        loop {
+            let res = rusti::atomic_cxchgweak_seqcst_seqcst(&mut *x, 0, 1);
+            assert_eq!(res.0, 0);
+            if res.1 {
+                break;
+            }
+        }
+        assert_eq!(*x, 1);
+
+        loop {
+            let res = rusti::atomic_cxchgweak_acquire_acquire(&mut *x, 1, 2);
+            assert_eq!(res.0, 1);
+            if res.1 {
+                break;
+            }
+        }
+        assert_eq!(*x, 2);
+
+        loop {
+            let res = rusti::atomic_cxchgweak_release_relaxed(&mut *x, 2, 3);
+            assert_eq!(res.0, 2);
+            if res.1 {
+                break;
+            }
+        }
+        assert_eq!(*x, 3);
+    }
+}
-- 
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