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1; RUN: llc -mtriple=aarch64-none-linux-gnu -verify-machineinstrs < %s | FileCheck %s2; RUN: llc -mtriple=aarch64-none-linux-gnu -verify-machineinstrs -mattr=+outline-atomics < %s | FileCheck %s --check-prefix=OUTLINE-ATOMICS3 4define i32 @foo(ptr %var, i1 %cond) {5; OUTLINE-ATOMICS: bl __aarch64_ldadd4_relax6; CHECK-LABEL: foo:7 br i1 %cond, label %atomic_ver, label %simple_ver8simple_ver:9 %oldval = load i32, ptr %var10 %newval = add nsw i32 %oldval, -111 store i32 %newval, ptr %var12 br label %somewhere13atomic_ver:14 fence seq_cst15 %val = atomicrmw add ptr %var, i32 -1 monotonic16 fence seq_cst17 br label %somewhere18; CHECK: dmb19; CHECK: ldxr20; CHECK: dmb21 ; The key point here is that the second dmb isn't immediately followed by the22 ; simple_ver basic block, which LLVM attempted to do when DMB had been marked23 ; with isBarrier. For now, look for something that looks like "somewhere".24; CHECK-NEXT: ret25somewhere:26 %combined = phi i32 [ %val, %atomic_ver ], [ %newval, %simple_ver]27 ret i32 %combined28}29