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From ad7ffe71baba46865f2e65266ab025920dfdc20b 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/panic/unwind_safe.rs | 6 -----
library/core/src/sync/atomic.rs | 38 ---------------------------
library/core/tests/atomic.rs | 4 ---
4 files changed, 4 insertions(+), 50 deletions(-)
diff --git a/library/core/src/panic/unwind_safe.rs b/library/core/src/panic/unwind_safe.rs
index 092b7cf..158cf71 100644
--- a/library/core/src/panic/unwind_safe.rs
+++ b/library/core/src/panic/unwind_safe.rs
@@ -216,9 +216,6 @@ impl RefUnwindSafe for crate::sync::atomic::AtomicI32 {}
#[cfg(target_has_atomic_load_store = "64")]
#[stable(feature = "integer_atomics_stable", since = "1.34.0")]
impl RefUnwindSafe for crate::sync::atomic::AtomicI64 {}
-#[cfg(target_has_atomic_load_store = "128")]
-#[unstable(feature = "integer_atomics", issue = "99069")]
-impl RefUnwindSafe for crate::sync::atomic::AtomicI128 {}
#[cfg(target_has_atomic_load_store = "ptr")]
#[stable(feature = "unwind_safe_atomic_refs", since = "1.14.0")]
@@ -235,9 +232,6 @@ impl RefUnwindSafe for crate::sync::atomic::AtomicU32 {}
#[cfg(target_has_atomic_load_store = "64")]
#[stable(feature = "integer_atomics_stable", since = "1.34.0")]
impl RefUnwindSafe for crate::sync::atomic::AtomicU64 {}
-#[cfg(target_has_atomic_load_store = "128")]
-#[unstable(feature = "integer_atomics", issue = "99069")]
-impl RefUnwindSafe for crate::sync::atomic::AtomicU128 {}
#[cfg(target_has_atomic_load_store = "8")]
#[stable(feature = "unwind_safe_atomic_refs", since = "1.14.0")]
diff --git a/library/core/src/sync/atomic.rs b/library/core/src/sync/atomic.rs
index d9de37e..8293fce 100644
--- a/library/core/src/sync/atomic.rs
+++ b/library/core/src/sync/atomic.rs
@@ -2234,46 +2234,6 @@ 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 = "99069"),
- unstable(feature = "integer_atomics", issue = "99069"),
- unstable(feature = "integer_atomics", issue = "99069"),
- unstable(feature = "integer_atomics", issue = "99069"),
- unstable(feature = "integer_atomics", issue = "99069"),
- unstable(feature = "integer_atomics", issue = "99069"),
- rustc_const_stable(feature = "const_integer_atomics", since = "1.34.0"),
- unstable(feature = "integer_atomics", issue = "99069"),
- cfg_attr(not(test), rustc_diagnostic_item = "AtomicI128"),
- "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 = "99069"),
- unstable(feature = "integer_atomics", issue = "99069"),
- unstable(feature = "integer_atomics", issue = "99069"),
- unstable(feature = "integer_atomics", issue = "99069"),
- unstable(feature = "integer_atomics", issue = "99069"),
- unstable(feature = "integer_atomics", issue = "99069"),
- rustc_const_stable(feature = "const_integer_atomics", since = "1.34.0"),
- unstable(feature = "integer_atomics", issue = "99069"),
- cfg_attr(not(test), rustc_diagnostic_item = "AtomicU128"),
- "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 b735957..ea728b6 100644
--- a/library/core/tests/atomic.rs
+++ b/library/core/tests/atomic.rs
@@ -185,10 +185,6 @@ 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")]
--
2.26.2.7.g19db9cfb68
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