1; RUN: opt -basic-aa -print-memoryssa -verify-memoryssa -enable-new-pm=0 -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; Makes sure we have a sane model if both successors of some block is the same 5; block. 6 7define i32 @foo(i1 %a) { 8entry: 9 %0 = alloca i32, align 4 10; CHECK: 1 = MemoryDef(liveOnEntry) 11; CHECK-NEXT: store i32 4 12 store i32 4, i32* %0 13 br i1 %a, label %Loop.Body, label %Loop.End 14 15Loop.Body: 16; CHECK: 4 = MemoryPhi({entry,1},{Loop.End,3}) 17; CHECK-NEXT: 2 = MemoryDef(4) 18; CHECK-NEXT: store i32 5 19 store i32 5, i32* %0, align 4 20 br i1 %a, label %Loop.End, label %Loop.End ; WhyDoWeEvenHaveThatLever.gif 21 22Loop.End: 23; CHECK: 3 = MemoryPhi({entry,1},{Loop.Body,2},{Loop.Body,2}) 24; CHECK-NEXT: MemoryUse(3) 25; CHECK-NEXT: %1 = load 26 %1 = load i32, i32* %0, align 4 27 %2 = icmp eq i32 5, %1 28 br i1 %2, label %Ret, label %Loop.Body 29 30Ret: 31 ret i32 %1 32} 33
