1 ; RUN: opt -basicaa -print-memoryssa -verify-memoryssa -analyze < %s 2>&1 | FileCheck %s 2 ; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s 3 ; 4 ; many-dom.ll, with an added back-edge back into the switch. 5 ; Because people love their gotos. 6 7 declare i1 @getBool() readnone 8 9 define i32 @foo(i32* %p) { 10 entry: 11 br label %loopbegin 12 13 loopbegin: 14 ; CHECK: 9 = MemoryPhi({entry,liveOnEntry},{sw.epilog,6}) 15 ; CHECK-NEXT: %n = 16 %n = phi i32 [ 0, %entry ], [ %1, %sw.epilog ] 17 %m = alloca i32, align 4 18 switch i32 %n, label %sw.default [ 19 i32 0, label %sw.bb 20 i32 1, label %sw.bb1 21 i32 2, label %sw.bb2 22 i32 3, label %sw.bb3 23 ] 24 25 sw.bb: 26 ; CHECK: 1 = MemoryDef(9) 27 ; CHECK-NEXT: store i32 1 28 store i32 1, i32* %m, align 4 29 br label %sw.epilog 30 31 sw.bb1: 32 ; CHECK: 2 = MemoryDef(9) 33 ; CHECK-NEXT: store i32 2 34 store i32 2, i32* %m, align 4 35 br label %sw.epilog 36 37 sw.bb2: 38 ; CHECK: 3 = MemoryDef(9) 39 ; CHECK-NEXT: store i32 3 40 store i32 3, i32* %m, align 4 41 br label %sw.epilog 42 43 sw.bb3: 44 ; CHECK: 10 = MemoryPhi({loopbegin,9},{sw.almostexit,6}) 45 ; CHECK: 4 = MemoryDef(10) 46 ; CHECK-NEXT: store i32 4 47 store i32 4, i32* %m, align 4 48 br label %sw.epilog 49 50 sw.default: 51 ; CHECK: 5 = MemoryDef(9) 52 ; CHECK-NEXT: store i32 5 53 store i32 5, i32* %m, align 4 54 br label %sw.epilog 55 56 sw.epilog: 57 ; CHECK: 8 = MemoryPhi({sw.default,5},{sw.bb3,4},{sw.bb,1},{sw.bb1,2},{sw.bb2,3}) 58 ; CHECK-NEXT: MemoryUse(8) 59 ; CHECK-NEXT: %0 = 60 %0 = load i32, i32* %m, align 4 61 ; CHECK: 6 = MemoryDef(8) 62 ; CHECK-NEXT: %1 = 63 %1 = load volatile i32, i32* %p, align 4 64 %2 = icmp eq i32 %0, %1 65 br i1 %2, label %sw.almostexit, label %loopbegin 66 67 sw.almostexit: 68 %3 = icmp eq i32 0, %1 69 br i1 %3, label %exit, label %sw.bb3 70 71 exit: 72 ; CHECK: 7 = MemoryDef(6) 73 ; CHECK-NEXT: %4 = load volatile i32 74 %4 = load volatile i32, i32* %p, align 4 75 %5 = add i32 %4, %1 76 ret i32 %5 77 } 78
