// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.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.

// Makes sure that zero-initializing large types is reasonably fast,
// Doing it incorrectly causes massive slowdown in LLVM during
// optimisation.

#![feature(intrinsics)]

extern "rust-intrinsic" {
    pub fn init<T>() -> T;
}

const SIZE: usize = 1024 * 1024;

fn main() {
    let _memory: [u8; SIZE] = unsafe { init() };
}

// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.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.

// Makes sure that zero-initializing large types is reasonably fast,
// Doing it incorrectly causes massive slowdown in LLVM during
// optimisation.

#![feature(intrinsics)]

extern "rust-intrinsic" {
    pub fn init<T>() -> T;
}

const SIZE: usize = 512 * 1024 * 1024;

fn main() {
    let _memory: [u8; SIZE] = unsafe { init() };
}

--- 
+++ 
@@ -18,7 +18,7 @@
     pub fn init<T>() -> T;
 }
 
-const SIZE: usize = 512 * 1024 * 1024;
+const SIZE: usize = 1024 * 1024;
 
 fn main() {
     let _memory: [u8; SIZE] = unsafe { init() };
Reduce size of array in test case to 1MB
