| ; RUN: opt -basic-aa -print-memoryssa -verify-memoryssa -enable-new-pm=0 -analyze < %s 2>&1 | FileCheck %s |
| ; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s |
| ; |
| ; Makes sure we have a sane model if both successors of some block is the same |
| ; block. |
| |
| define i32 @foo(i1 %a) { |
| entry: |
| %0 = alloca i32, align 4 |
| ; CHECK: 1 = MemoryDef(liveOnEntry) |
| ; CHECK-NEXT: store i32 4 |
| store i32 4, i32* %0 |
| br i1 %a, label %Loop.Body, label %Loop.End |
| |
| Loop.Body: |
| ; CHECK: 4 = MemoryPhi({entry,1},{Loop.End,3}) |
| ; CHECK-NEXT: 2 = MemoryDef(4) |
| ; CHECK-NEXT: store i32 5 |
| store i32 5, i32* %0, align 4 |
| br i1 %a, label %Loop.End, label %Loop.End ; WhyDoWeEvenHaveThatLever.gif |
| |
| Loop.End: |
| ; CHECK: 3 = MemoryPhi({entry,1},{Loop.Body,2},{Loop.Body,2}) |
| ; CHECK-NEXT: MemoryUse(3) |
| ; CHECK-NEXT: %1 = load |
| %1 = load i32, i32* %0, align 4 |
| %2 = icmp eq i32 5, %1 |
| br i1 %2, label %Ret, label %Loop.Body |
| |
| Ret: |
| ret i32 %1 |
| } |
