Upgrade LLVM

Includes https://github.com/rust-lang/llvm/pull/80
Includes https://github.com/rust-lang/llvm/pull/79

Also adds tests and thus fixes #24194

1 files changed, 28 insertions, 0 deletions

diff --git a/src/test/codegen/alloc-optimisation.rs b/src/test/codegen/alloc-optimisation.rs
new file mode 100644
index 00000000000..3953f637cf7
--- /dev/null
+++ b/src/test/codegen/alloc-optimisation.rs
@@ -0,0 +1,28 @@
+// Copyright 2017 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.
+#![crate_type="lib"]
+
+#[no_mangle]
+pub fn alloc_zeroed_test(size: u8) {
+    // CHECK-LABEL: @alloc_zeroed_test
+    // CHECK-NEXT: start:
+    // CHECK-NEXT: ret void
+    let x = vec![0u8; size as usize];
+    drop(x);
+}
+
+#[no_mangle]
+pub fn alloc_test(data: u32) {
+    // CHECK-LABEL: @alloc_test
+    // CHECK-NEXT: start:
+    // CHECK-NEXT: ret void
+    let x = Box::new(data);
+    drop(x);
+}