77 lines · plain
1; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s2;3; many-dom.ll, with an added back-edge back into the switch.4; Because people love their gotos.5 6declare i1 @getBool() readnone7 8define i32 @foo(ptr %p) {9entry:10 br label %loopbegin11 12loopbegin:13; CHECK: 9 = MemoryPhi({entry,liveOnEntry},{sw.epilog,6})14; CHECK-NEXT: %n =15 %n = phi i32 [ 0, %entry ], [ %1, %sw.epilog ]16 %m = alloca i32, align 417 switch i32 %n, label %sw.default [18 i32 0, label %sw.bb19 i32 1, label %sw.bb120 i32 2, label %sw.bb221 i32 3, label %sw.bb322 ]23 24sw.bb:25; CHECK: 1 = MemoryDef(9)26; CHECK-NEXT: store i32 127 store i32 1, ptr %m, align 428 br label %sw.epilog29 30sw.bb1:31; CHECK: 2 = MemoryDef(9)32; CHECK-NEXT: store i32 233 store i32 2, ptr %m, align 434 br label %sw.epilog35 36sw.bb2:37; CHECK: 3 = MemoryDef(9)38; CHECK-NEXT: store i32 339 store i32 3, ptr %m, align 440 br label %sw.epilog41 42sw.bb3:43; CHECK: 10 = MemoryPhi({loopbegin,9},{sw.almostexit,6})44; CHECK: 4 = MemoryDef(10)45; CHECK-NEXT: store i32 446 store i32 4, ptr %m, align 447 br label %sw.epilog48 49sw.default:50; CHECK: 5 = MemoryDef(9)51; CHECK-NEXT: store i32 552 store i32 5, ptr %m, align 453 br label %sw.epilog54 55sw.epilog:56; CHECK: 8 = MemoryPhi({sw.default,5},{sw.bb3,4},{sw.bb,1},{sw.bb1,2},{sw.bb2,3})57; CHECK-NEXT: MemoryUse(8)58; CHECK-NEXT: %0 =59 %0 = load i32, ptr %m, align 460; CHECK: 6 = MemoryDef(8)61; CHECK-NEXT: %1 =62 %1 = load volatile i32, ptr %p, align 463 %2 = icmp eq i32 %0, %164 br i1 %2, label %sw.almostexit, label %loopbegin65 66sw.almostexit:67 %3 = icmp eq i32 0, %168 br i1 %3, label %exit, label %sw.bb369 70exit:71; CHECK: 7 = MemoryDef(6)72; CHECK-NEXT: %4 = load volatile i3273 %4 = load volatile i32, ptr %p, align 474 %5 = add i32 %4, %175 ret i32 %576}77