1 ; RUN: llc -mtriple=aarch64-none-linux-gnu < %s | FileCheck %s
3 define i32 @foo(i32* %var, i1 %cond) {
5 br i1 %cond, label %atomic_ver, label %simple_ver
7 %oldval = load i32* %var
8 %newval = add nsw i32 %oldval, -1
9 store i32 %newval, i32* %var
12 %val = atomicrmw add i32* %var, i32 -1 seq_cst
17 ; The key point here is that the second dmb isn't immediately followed by the
18 ; simple_ver basic block, which LLVM attempted to do when DMB had been marked
19 ; with isBarrier. For now, look for something that looks like "somewhere".
22 %combined = phi i32 [ %val, %atomic_ver ], [ %newval, %simple_ver]