1 files changed, 0 insertions, 116 deletions
diff --git a/vendor/parking_lot-0.11.2/src/elision.rs b/vendor/parking_lot-0.11.2/src/elision.rs
deleted file mode 100644
index 68cfa63c3..000000000
--- a/vendor/parking_lot-0.11.2/src/elision.rs
+++ /dev/null
@@ -1,116 +0,0 @@
-// Copyright 2016 Amanieu d'Antras
-//
-// Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or
-// http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
-// http://opensource.org/licenses/MIT>, at your option. This file may not be
-// copied, modified, or distributed except according to those terms.
-
-use std::sync::atomic::AtomicUsize;
-
-// Extension trait to add lock elision primitives to atomic types
-pub trait AtomicElisionExt {
-    type IntType;
-
-    // Perform a compare_exchange and start a transaction
-    fn elision_compare_exchange_acquire(
-        &self,
-        current: Self::IntType,
-        new: Self::IntType,
-    ) -> Result<Self::IntType, Self::IntType>;
-
-    // Perform a fetch_sub and end a transaction
-    fn elision_fetch_sub_release(&self, val: Self::IntType) -> Self::IntType;
-}
-
-// Indicates whether the target architecture supports lock elision
-#[inline]
-pub fn have_elision() -> bool {
-    cfg!(all(
-        feature = "nightly",
-        any(target_arch = "x86", target_arch = "x86_64"),
-    ))
-}
-
-// This implementation is never actually called because it is guarded by
-// have_elision().
-#[cfg(not(all(feature = "nightly", any(target_arch = "x86", target_arch = "x86_64"))))]
-impl AtomicElisionExt for AtomicUsize {
-    type IntType = usize;
-
-    #[inline]
-    fn elision_compare_exchange_acquire(&self, _: usize, _: usize) -> Result<usize, usize> {
-        unreachable!();
-    }
-
-    #[inline]
-    fn elision_fetch_sub_release(&self, _: usize) -> usize {
-        unreachable!();
-    }
-}
-
-#[cfg(all(feature = "nightly", any(target_arch = "x86", target_arch = "x86_64")))]
-impl AtomicElisionExt for AtomicUsize {
-    type IntType = usize;
-
-    #[cfg(target_pointer_width = "32")]
-    #[inline]
-    fn elision_compare_exchange_acquire(&self, current: usize, new: usize) -> Result<usize, usize> {
-        unsafe {
-            let prev: usize;
-            llvm_asm!("xacquire; lock; cmpxchgl $2, $1"
-                      : "={eax}" (prev), "+*m" (self)
-                      : "r" (new), "{eax}" (current)
-                      : "memory"
-                      : "volatile");
-            if prev == current {
-                Ok(prev)
-            } else {
-                Err(prev)
-            }
-        }
-    }
-    #[cfg(target_pointer_width = "64")]
-    #[inline]
-    fn elision_compare_exchange_acquire(&self, current: usize, new: usize) -> Result<usize, usize> {
-        unsafe {
-            let prev: usize;
-            llvm_asm!("xacquire; lock; cmpxchgq $2, $1"
-                      : "={rax}" (prev), "+*m" (self)
-                      : "r" (new), "{rax}" (current)
-                      : "memory"
-                      : "volatile");
-            if prev == current {
-                Ok(prev)
-            } else {
-                Err(prev)
-            }
-        }
-    }
-
-    #[cfg(target_pointer_width = "32")]
-    #[inline]
-    fn elision_fetch_sub_release(&self, val: usize) -> usize {
-        unsafe {
-            let prev: usize;
-            llvm_asm!("xrelease; lock; xaddl $2, $1"
-                      : "=r" (prev), "+*m" (self)
-                      : "0" (val.wrapping_neg())
-                      : "memory"
-                      : "volatile");
-            prev
-        }
-    }
-    #[cfg(target_pointer_width = "64")]
-    #[inline]
-    fn elision_fetch_sub_release(&self, val: usize) -> usize {
-        unsafe {
-            let prev: usize;
-            llvm_asm!("xrelease; lock; xaddq $2, $1"
-                      : "=r" (prev), "+*m" (self)
-                      : "0" (val.wrapping_neg())
-                      : "memory"
-                      : "volatile");
-            prev
-        }
-    }
-}