1; RUN: llc -march=arm64 -mtriple=arm64-apple-ios -aarch64-atomic-cfg-tidy=0 < %s | FileCheck %s
2; rdar://11935841
3
4define void @t1() nounwind ssp {
5entry:
6; CHECK-LABEL: t1:
7; CHECK-NOT: add x{{[0-9]+}}, sp
8; CHECK: stp x28, x27, [sp, #-16]!
9  %v = alloca [288 x i32], align 4
10  unreachable
11}
12