From 894e07dfec2624ba539129b1c1d63e1d7d812bda Mon Sep 17 00:00:00 2001
From: bjorn3 <bjorn3@users.noreply.github.com>
Date: Thu, 18 Feb 2021 18:45:28 +0100
Subject: [PATCH] Disable 128bit atomic operations

Cranelift doesn't support them yet
---
 library/core/src/sync/atomic.rs | 38 ---------------------------------
 library/core/tests/atomic.rs    |  4 ----
 library/std/src/panic.rs        |  6 ------
 3 files changed, 48 deletions(-)

diff --git a/library/core/src/sync/atomic.rs b/library/core/src/sync/atomic.rs
index 81c9e1d..65c9503 100644
--- a/library/core/src/sync/atomic.rs
+++ b/library/core/src/sync/atomic.rs
@@ -2228,44 +2228,6 @@ atomic_int! {
     "AtomicU64::new(0)",
     u64 AtomicU64 ATOMIC_U64_INIT
 }
-#[cfg(target_has_atomic_load_store = "128")]
-atomic_int! {
-    cfg(target_has_atomic = "128"),
-    cfg(target_has_atomic_equal_alignment = "128"),
-    unstable(feature = "integer_atomics", issue = "32976"),
-    unstable(feature = "integer_atomics", issue = "32976"),
-    unstable(feature = "integer_atomics", issue = "32976"),
-    unstable(feature = "integer_atomics", issue = "32976"),
-    unstable(feature = "integer_atomics", issue = "32976"),
-    unstable(feature = "integer_atomics", issue = "32976"),
-    rustc_const_stable(feature = "const_integer_atomics", since = "1.34.0"),
-    unstable(feature = "integer_atomics", issue = "32976"),
-    "i128",
-    "#![feature(integer_atomics)]\n\n",
-    atomic_min, atomic_max,
-    16,
-    "AtomicI128::new(0)",
-    i128 AtomicI128 ATOMIC_I128_INIT
-}
-#[cfg(target_has_atomic_load_store = "128")]
-atomic_int! {
-    cfg(target_has_atomic = "128"),
-    cfg(target_has_atomic_equal_alignment = "128"),
-    unstable(feature = "integer_atomics", issue = "32976"),
-    unstable(feature = "integer_atomics", issue = "32976"),
-    unstable(feature = "integer_atomics", issue = "32976"),
-    unstable(feature = "integer_atomics", issue = "32976"),
-    unstable(feature = "integer_atomics", issue = "32976"),
-    unstable(feature = "integer_atomics", issue = "32976"),
-    rustc_const_stable(feature = "const_integer_atomics", since = "1.34.0"),
-    unstable(feature = "integer_atomics", issue = "32976"),
-    "u128",
-    "#![feature(integer_atomics)]\n\n",
-    atomic_umin, atomic_umax,
-    16,
-    "AtomicU128::new(0)",
-    u128 AtomicU128 ATOMIC_U128_INIT
-}
 
 macro_rules! atomic_int_ptr_sized {
     ( $($target_pointer_width:literal $align:literal)* ) => { $(
diff --git a/library/core/tests/atomic.rs b/library/core/tests/atomic.rs
index 2d1e449..cb6da5d 100644
--- a/library/core/tests/atomic.rs
+++ b/library/core/tests/atomic.rs
@@ -145,10 +145,6 @@ fn atomic_alignment() {
     assert_eq!(align_of::<AtomicU64>(), size_of::<AtomicU64>());
     #[cfg(target_has_atomic = "64")]
     assert_eq!(align_of::<AtomicI64>(), size_of::<AtomicI64>());
-    #[cfg(target_has_atomic = "128")]
-    assert_eq!(align_of::<AtomicU128>(), size_of::<AtomicU128>());
-    #[cfg(target_has_atomic = "128")]
-    assert_eq!(align_of::<AtomicI128>(), size_of::<AtomicI128>());
     #[cfg(target_has_atomic = "ptr")]
     assert_eq!(align_of::<AtomicUsize>(), size_of::<AtomicUsize>());
     #[cfg(target_has_atomic = "ptr")]
diff --git a/library/std/src/panic.rs b/library/std/src/panic.rs
index 89a822a..779fd88 100644
--- a/library/std/src/panic.rs
+++ b/library/std/src/panic.rs
@@ -279,9 +279,6 @@ impl RefUnwindSafe for atomic::AtomicI32 {}
 #[cfg(target_has_atomic_load_store = "64")]
 #[stable(feature = "integer_atomics_stable", since = "1.34.0")]
 impl RefUnwindSafe for atomic::AtomicI64 {}
-#[cfg(target_has_atomic_load_store = "128")]
-#[unstable(feature = "integer_atomics", issue = "32976")]
-impl RefUnwindSafe for atomic::AtomicI128 {}
 
 #[cfg(target_has_atomic_load_store = "ptr")]
 #[stable(feature = "unwind_safe_atomic_refs", since = "1.14.0")]
@@ -298,9 +295,6 @@ impl RefUnwindSafe for atomic::AtomicU32 {}
 #[cfg(target_has_atomic_load_store = "64")]
 #[stable(feature = "integer_atomics_stable", since = "1.34.0")]
 impl RefUnwindSafe for atomic::AtomicU64 {}
-#[cfg(target_has_atomic_load_store = "128")]
-#[unstable(feature = "integer_atomics", issue = "32976")]
-impl RefUnwindSafe for atomic::AtomicU128 {}
 
 #[cfg(target_has_atomic_load_store = "8")]
 #[stable(feature = "unwind_safe_atomic_refs", since = "1.14.0")]
-- 
2.26.2.7.g19db9cfb68