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

   1 From ad7ffe71baba46865f2e65266ab025920dfdc20b 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/panic/unwind_safe.rs |  6 -----
   9  library/core/src/sync/atomic.rs       | 38 ---------------------------
  10  library/core/tests/atomic.rs          |  4 ---
  11  4 files changed, 4 insertions(+), 50 deletions(-)
  12
  13 diff --git a/library/core/src/panic/unwind_safe.rs b/library/core/src/panic/unwind_safe.rs
  14 index 092b7cf..158cf71 100644
  15 --- a/library/core/src/panic/unwind_safe.rs
  16 +++ b/library/core/src/panic/unwind_safe.rs
  17 @@ -216,9 +216,6 @@ impl RefUnwindSafe for crate::sync::atomic::AtomicI32 {}
  18  #[cfg(target_has_atomic_load_store = "64")]
  19  #[stable(feature = "integer_atomics_stable", since = "1.34.0")]
  20  impl RefUnwindSafe for crate::sync::atomic::AtomicI64 {}
  21 -#[cfg(target_has_atomic_load_store = "128")]
  22 -#[unstable(feature = "integer_atomics", issue = "32976")]
  23 -impl RefUnwindSafe for crate::sync::atomic::AtomicI128 {}
  24
  25  #[cfg(target_has_atomic_load_store = "ptr")]
  26  #[stable(feature = "unwind_safe_atomic_refs", since = "1.14.0")]
  27 @@ -235,9 +232,6 @@ impl RefUnwindSafe for crate::sync::atomic::AtomicU32 {}
  28  #[cfg(target_has_atomic_load_store = "64")]
  29  #[stable(feature = "integer_atomics_stable", since = "1.34.0")]
  30  impl RefUnwindSafe for crate::sync::atomic::AtomicU64 {}
  31 -#[cfg(target_has_atomic_load_store = "128")]
  32 -#[unstable(feature = "integer_atomics", issue = "32976")]
  33 -impl RefUnwindSafe for crate::sync::atomic::AtomicU128 {}
  34
  35  #[cfg(target_has_atomic_load_store = "8")]
  36  #[stable(feature = "unwind_safe_atomic_refs", since = "1.14.0")]
  37 diff --git a/library/core/src/sync/atomic.rs b/library/core/src/sync/atomic.rs
  38 index d9de37e..8293fce 100644
  39 --- a/library/core/src/sync/atomic.rs
  40 +++ b/library/core/src/sync/atomic.rs
  41 @@ -2234,44 +2234,6 @@ atomic_int! {
  42      "AtomicU64::new(0)",
  43      u64 AtomicU64 ATOMIC_U64_INIT
  44  }
  45 -#[cfg(target_has_atomic_load_store = "128")]
  46 -atomic_int! {
  47 -    cfg(target_has_atomic = "128"),
  48 -    cfg(target_has_atomic_equal_alignment = "128"),
  49 -    unstable(feature = "integer_atomics", issue = "32976"),
  50 -    unstable(feature = "integer_atomics", issue = "32976"),
  51 -    unstable(feature = "integer_atomics", issue = "32976"),
  52 -    unstable(feature = "integer_atomics", issue = "32976"),
  53 -    unstable(feature = "integer_atomics", issue = "32976"),
  54 -    unstable(feature = "integer_atomics", issue = "32976"),
  55 -    rustc_const_stable(feature = "const_integer_atomics", since = "1.34.0"),
  56 -    unstable(feature = "integer_atomics", issue = "32976"),
  57 -    "i128",
  58 -    "#![feature(integer_atomics)]\n\n",
  59 -    atomic_min, atomic_max,
  60 -    16,
  61 -    "AtomicI128::new(0)",
  62 -    i128 AtomicI128 ATOMIC_I128_INIT
  63 -}
  64 -#[cfg(target_has_atomic_load_store = "128")]
  65 -atomic_int! {
  66 -    cfg(target_has_atomic = "128"),
  67 -    cfg(target_has_atomic_equal_alignment = "128"),
  68 -    unstable(feature = "integer_atomics", issue = "32976"),
  69 -    unstable(feature = "integer_atomics", issue = "32976"),
  70 -    unstable(feature = "integer_atomics", issue = "32976"),
  71 -    unstable(feature = "integer_atomics", issue = "32976"),
  72 -    unstable(feature = "integer_atomics", issue = "32976"),
  73 -    unstable(feature = "integer_atomics", issue = "32976"),
  74 -    rustc_const_stable(feature = "const_integer_atomics", since = "1.34.0"),
  75 -    unstable(feature = "integer_atomics", issue = "32976"),
  76 -    "u128",
  77 -    "#![feature(integer_atomics)]\n\n",
  78 -    atomic_umin, atomic_umax,
  79 -    16,
  80 -    "AtomicU128::new(0)",
  81 -    u128 AtomicU128 ATOMIC_U128_INIT
  82 -}
  83
  84  macro_rules! atomic_int_ptr_sized {
  85      ( $($target_pointer_width:literal $align:literal)* ) => { $(
  86 diff --git a/library/core/tests/atomic.rs b/library/core/tests/atomic.rs
  87 index b735957..ea728b6 100644
  88 --- a/library/core/tests/atomic.rs
  89 +++ b/library/core/tests/atomic.rs
  90 @@ -185,10 +185,6 @@ fn atomic_alignment() {
  91      assert_eq!(align_of::<AtomicU64>(), size_of::<AtomicU64>());
  92      #[cfg(target_has_atomic = "64")]
  93      assert_eq!(align_of::<AtomicI64>(), size_of::<AtomicI64>());
  94 -    #[cfg(target_has_atomic = "128")]
  95 -    assert_eq!(align_of::<AtomicU128>(), size_of::<AtomicU128>());
  96 -    #[cfg(target_has_atomic = "128")]
  97 -    assert_eq!(align_of::<AtomicI128>(), size_of::<AtomicI128>());
  98      #[cfg(target_has_atomic = "ptr")]
  99      assert_eq!(align_of::<AtomicUsize>(), size_of::<AtomicUsize>());
 100      #[cfg(target_has_atomic = "ptr")]
 101 --
 102 2.26.2.7.g19db9cfb68
 103