remove reserve_for_push

Author: conradludgate

library/alloc/src/raw_vec.rs

@@ -290,14 +290,6 @@ impl<T, A: Allocator> RawVec<T, A> {
         }
     }
 
-    /// A specialized version of `reserve()` used only by the hot and
-    /// oft-instantiated `Vec::push()`, which does its own capacity check.
-    #[cfg(not(no_global_oom_handling))]
-    #[inline(never)]
-    pub fn reserve_for_push(&mut self, len: usize) {
-        handle_reserve(self.grow_amortized(len, 1));
-    }
-
     /// The same as `reserve`, but returns on errors instead of panicking or aborting.
     pub fn try_reserve(&mut self, len: usize, additional: usize) -> Result<(), TryReserveError> {
         if self.needs_to_grow(len, additional) {

library/alloc/src/vec/mod.rs

@@ -1830,9 +1830,7 @@ impl<T, A: Allocator> Vec<T, A> {
     pub fn push(&mut self, value: T) {
         // This will panic or abort if we would allocate > isize::MAX bytes
         // or if the length increment would overflow for zero-sized types.
-        if self.len == self.buf.capacity() {
-            self.buf.reserve_for_push(self.len);
-        }
+        self.buf.reserve(self.len, 1);
         unsafe {
             let end = self.as_mut_ptr().add(self.len);
             ptr::write(end, value);