compiler/rustc_codegen_cranelift/patches/0027-Disable-128bit-atomic-operations.patch

   1 From 894e07dfec2624ba539129b1c1d63e1d7d812bda Mon Sep 17 00:00:00 2001
   2 From: bjorn3 <bjorn3@users.noreply.github.com>
   3 Date: Thu, 18 Feb 2021 18:45:28 +0100
   4 Subject: [PATCH] Disable 128bit atomic operations
   5
   6 Cranelift doesn't support them yet
   7 ---
   8  library/core/src/sync/atomic.rs | 38 ---------------------------------
   9  library/core/tests/atomic.rs    |  4 ----
  10  library/std/src/panic.rs        |  6 ------
  11  3 files changed, 48 deletions(-)
  12
  13 diff --git a/library/core/src/sync/atomic.rs b/library/core/src/sync/atomic.rs
  14 index 81c9e1d..65c9503 100644
  15 --- a/library/core/src/sync/atomic.rs
  16 +++ b/library/core/src/sync/atomic.rs
  17 @@ -2228,44 +2228,6 @@ atomic_int! {
  18      "AtomicU64::new(0)",
  19      u64 AtomicU64 ATOMIC_U64_INIT
  20  }
  21 -#[cfg(target_has_atomic_load_store = "128")]
  22 -atomic_int! {
  23 -    cfg(target_has_atomic = "128"),
  24 -    cfg(target_has_atomic_equal_alignment = "128"),
  25 -    unstable(feature = "integer_atomics", issue = "32976"),
  26 -    unstable(feature = "integer_atomics", issue = "32976"),
  27 -    unstable(feature = "integer_atomics", issue = "32976"),
  28 -    unstable(feature = "integer_atomics", issue = "32976"),
  29 -    unstable(feature = "integer_atomics", issue = "32976"),
  30 -    unstable(feature = "integer_atomics", issue = "32976"),
  31 -    rustc_const_stable(feature = "const_integer_atomics", since = "1.34.0"),
  32 -    unstable(feature = "integer_atomics", issue = "32976"),
  33 -    "i128",
  34 -    "#![feature(integer_atomics)]\n\n",
  35 -    atomic_min, atomic_max,
  36 -    16,
  37 -    "AtomicI128::new(0)",
  38 -    i128 AtomicI128 ATOMIC_I128_INIT
  39 -}
  40 -#[cfg(target_has_atomic_load_store = "128")]
  41 -atomic_int! {
  42 -    cfg(target_has_atomic = "128"),
  43 -    cfg(target_has_atomic_equal_alignment = "128"),
  44 -    unstable(feature = "integer_atomics", issue = "32976"),
  45 -    unstable(feature = "integer_atomics", issue = "32976"),
  46 -    unstable(feature = "integer_atomics", issue = "32976"),
  47 -    unstable(feature = "integer_atomics", issue = "32976"),
  48 -    unstable(feature = "integer_atomics", issue = "32976"),
  49 -    unstable(feature = "integer_atomics", issue = "32976"),
  50 -    rustc_const_stable(feature = "const_integer_atomics", since = "1.34.0"),
  51 -    unstable(feature = "integer_atomics", issue = "32976"),
  52 -    "u128",
  53 -    "#![feature(integer_atomics)]\n\n",
  54 -    atomic_umin, atomic_umax,
  55 -    16,
  56 -    "AtomicU128::new(0)",
  57 -    u128 AtomicU128 ATOMIC_U128_INIT
  58 -}
  59
  60  macro_rules! atomic_int_ptr_sized {
  61      ( $($target_pointer_width:literal $align:literal)* ) => { $(
  62 diff --git a/library/core/tests/atomic.rs b/library/core/tests/atomic.rs
  63 index 2d1e449..cb6da5d 100644
  64 --- a/library/core/tests/atomic.rs
  65 +++ b/library/core/tests/atomic.rs
  66 @@ -145,10 +145,6 @@ fn atomic_alignment() {
  67      assert_eq!(align_of::<AtomicU64>(), size_of::<AtomicU64>());
  68      #[cfg(target_has_atomic = "64")]
  69      assert_eq!(align_of::<AtomicI64>(), size_of::<AtomicI64>());
  70 -    #[cfg(target_has_atomic = "128")]
  71 -    assert_eq!(align_of::<AtomicU128>(), size_of::<AtomicU128>());
  72 -    #[cfg(target_has_atomic = "128")]
  73 -    assert_eq!(align_of::<AtomicI128>(), size_of::<AtomicI128>());
  74      #[cfg(target_has_atomic = "ptr")]
  75      assert_eq!(align_of::<AtomicUsize>(), size_of::<AtomicUsize>());
  76      #[cfg(target_has_atomic = "ptr")]
  77 diff --git a/library/std/src/panic.rs b/library/std/src/panic.rs
  78 index 89a822a..779fd88 100644
  79 --- a/library/std/src/panic.rs
  80 +++ b/library/std/src/panic.rs
  81 @@ -279,9 +279,6 @@ impl RefUnwindSafe for atomic::AtomicI32 {}
  82  #[cfg(target_has_atomic_load_store = "64")]
  83  #[stable(feature = "integer_atomics_stable", since = "1.34.0")]
  84  impl RefUnwindSafe for atomic::AtomicI64 {}
  85 -#[cfg(target_has_atomic_load_store = "128")]
  86 -#[unstable(feature = "integer_atomics", issue = "32976")]
  87 -impl RefUnwindSafe for atomic::AtomicI128 {}
  88
  89  #[cfg(target_has_atomic_load_store = "ptr")]
  90  #[stable(feature = "unwind_safe_atomic_refs", since = "1.14.0")]
  91 @@ -298,9 +295,6 @@ impl RefUnwindSafe for atomic::AtomicU32 {}
  92  #[cfg(target_has_atomic_load_store = "64")]
  93  #[stable(feature = "integer_atomics_stable", since = "1.34.0")]
  94  impl RefUnwindSafe for atomic::AtomicU64 {}
  95 -#[cfg(target_has_atomic_load_store = "128")]
  96 -#[unstable(feature = "integer_atomics", issue = "32976")]
  97 -impl RefUnwindSafe for atomic::AtomicU128 {}
  98
  99  #[cfg(target_has_atomic_load_store = "8")]
 100  #[stable(feature = "unwind_safe_atomic_refs", since = "1.14.0")]
 101 --
 102 2.26.2.7.g19db9cfb68
 103