1 ; RUN: llc -mtriple=aarch64-none-linux-gnu -verify-machineinstrs < %s | FileCheck %s
2 ; RUN: llc -mtriple=arm64-none-linux-gnu -verify-machineinstrs < %s | FileCheck %s
4 define i32 @foo(i32* %var, i1 %cond) {
6 br i1 %cond, label %atomic_ver, label %simple_ver
8 %oldval = load i32* %var
9 %newval = add nsw i32 %oldval, -1
10 store i32 %newval, i32* %var
14 %val = atomicrmw add i32* %var, i32 -1 monotonic
20 ; The key point here is that the second dmb isn't immediately followed by the
21 ; simple_ver basic block, which LLVM attempted to do when DMB had been marked
22 ; with isBarrier. For now, look for something that looks like "somewhere".
25 %combined = phi i32 [ %val, %atomic_ver ], [ %newval, %simple_ver]