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 3define void @F(i8*) { 4 br i1 true, label %left, label %right 5left: 6; CHECK: 1 = MemoryDef(liveOnEntry) 7 store i8 16, i8* %0 8 br label %merge 9right: 10 br label %merge 11 12merge: 13; CHECK-NOT: 2 = MemoryPhi 14ret void 15} 16 17define void @F2(i8*) { 18 br i1 true, label %left, label %right 19left: 20; CHECK: 1 = MemoryDef(liveOnEntry) 21 store i8 16, i8* %0 22 br label %merge 23right: 24 br label %merge 25 26merge: 27; CHECK: 2 = MemoryPhi({left,1},{right,liveOnEntry}) 28%c = load i8, i8* %0 29ret void 30} 31 32; Ensure we treat def-only blocks as though they have uses for phi placement. 33; CHECK-LABEL: define void @F3 34define void @F3() { 35 %a = alloca i8 36; CHECK: 1 = MemoryDef(liveOnEntry) 37; CHECK-NEXT: store i8 0, i8* %a 38 store i8 0, i8* %a 39 br i1 undef, label %if.then, label %if.end 40 41if.then: 42; CHECK: 2 = MemoryDef(1) 43; CHECK-NEXT: store i8 1, i8* %a 44 store i8 1, i8* %a 45 br label %if.end 46 47if.end: 48; CHECK: 4 = MemoryPhi({%0,1},{if.then,2}) 49; CHECK: 3 = MemoryDef(4) 50; CHECK-NEXT: store i8 2, i8* %a 51 store i8 2, i8* %a 52 ret void 53} 54