Rollup merge of #38959 - Amanieu:atomic128, r=alexcrichton

Add 128-bit atomics

This is currently only supported on AArch64 since that is the only target which unconditionally supports 128-bit atomic operations.

cc #35118

1 files changed, 9 insertions, 1 deletions

diff --git a/src/test/run-make/atomic-lock-free/atomic_lock_free.rs b/src/test/run-make/atomic-lock-free/atomic_lock_free.rs
index 023f2218b87..5ac50e04b8d 100644
--- a/src/test/run-make/atomic-lock-free/atomic_lock_free.rs
+++ b/src/test/run-make/atomic-lock-free/atomic_lock_free.rs
@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![feature(cfg_target_has_atomic, no_core, intrinsics, lang_items)]
+#![feature(cfg_target_has_atomic, no_core, intrinsics, lang_items, i128_type)]
 #![crate_type="rlib"]
 #![no_core]
 
@@ -54,6 +54,14 @@ pub unsafe fn atomic_u64(x: *mut u64) {
 pub unsafe fn atomic_i64(x: *mut i64) {
     atomic_xadd(x, 1);
 }
+#[cfg(target_has_atomic = "128")]
+pub unsafe fn atomic_u128(x: *mut u128) {
+    atomic_xadd(x, 1);
+}
+#[cfg(target_has_atomic = "128")]
+pub unsafe fn atomic_i128(x: *mut i128) {
+    atomic_xadd(x, 1);
+}
 #[cfg(target_has_atomic = "ptr")]
 pub unsafe fn atomic_usize(x: *mut usize) {
     atomic_xadd(x, 1);