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1; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s2;3; Ensures that volatile stores/loads count as MemoryDefs4 5; CHECK-LABEL: define i32 @foo6define i32 @foo() {7 %1 = alloca i32, align 48; CHECK: 1 = MemoryDef(liveOnEntry)9; CHECK-NEXT: store volatile i32 410 store volatile i32 4, ptr %1, align 411; CHECK: 2 = MemoryDef(1)12; CHECK-NEXT: store volatile i32 813 store volatile i32 8, ptr %1, align 414; CHECK: 3 = MemoryDef(2)15; CHECK-NEXT: %2 = load volatile i3216 %2 = load volatile i32, ptr %1, align 417; CHECK: 4 = MemoryDef(3)18; CHECK-NEXT: %3 = load volatile i3219 %3 = load volatile i32, ptr %1, align 420 %4 = add i32 %3, %221 ret i32 %422}23 24; Ensuring we allow hoisting nonvolatile loads around volatile loads.25; CHECK-LABEL: define void @volatile_only26define void @volatile_only(ptr %arg1, ptr %arg2) {27 ; Trivially NoAlias/MustAlias28 %a = alloca i3229 %b = alloca i3230 31; CHECK: 1 = MemoryDef(liveOnEntry)32; CHECK-NEXT: load volatile i32, ptr %a33 load volatile i32, ptr %a34; CHECK: MemoryUse(liveOnEntry)35; CHECK-NEXT: load i32, ptr %b36 load i32, ptr %b37; CHECK: MemoryUse(liveOnEntry)38; CHECK-NEXT: load i32, ptr %a39 load i32, ptr %a40 41 ; MayAlias42; CHECK: 2 = MemoryDef(1)43; CHECK-NEXT: load volatile i32, ptr %arg144 load volatile i32, ptr %arg145; CHECK: MemoryUse(liveOnEntry)46; CHECK-NEXT: load i32, ptr %arg247 load i32, ptr %arg248 49 ret void50}51 52; Ensuring that volatile atomic operations work properly.53; CHECK-LABEL: define void @volatile_atomics54define void @volatile_atomics(ptr %arg1, ptr %arg2) {55 %a = alloca i3256 %b = alloca i3257 58 ; Trivially NoAlias/MustAlias59 60; CHECK: 1 = MemoryDef(liveOnEntry)61; CHECK-NEXT: load atomic volatile i32, ptr %a acquire, align 462 load atomic volatile i32, ptr %a acquire, align 463; CHECK: MemoryUse(1)64; CHECK-NEXT: load i32, ptr %b65 load i32, ptr %b66 67; CHECK: 2 = MemoryDef(1)68; CHECK-NEXT: load atomic volatile i32, ptr %a monotonic, align 469 load atomic volatile i32, ptr %a monotonic, align 470; CHECK: MemoryUse(1)71; CHECK-NEXT: load i32, ptr %b72 load i32, ptr %b73; CHECK: MemoryUse(1)74; CHECK-NEXT: load atomic i32, ptr %b unordered, align 475 load atomic i32, ptr %b unordered, align 476; CHECK: MemoryUse(1)77; CHECK-NEXT: load atomic i32, ptr %a unordered, align 478 load atomic i32, ptr %a unordered, align 479; CHECK: MemoryUse(1)80; CHECK-NEXT: load i32, ptr %a81 load i32, ptr %a82 83 ; MayAlias84; CHECK: 3 = MemoryDef(2)85; CHECK-NEXT: load atomic volatile i32, ptr %arg1 monotonic, align 486 load atomic volatile i32, ptr %arg1 monotonic, align 487; CHECK: MemoryUse(1)88; CHECK-NEXT: load i32, ptr %arg289 load i32, ptr %arg290 91 ret void92}93