| ; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s |
| ; |
| ; Test that various function attributes give us sane results. |
| |
| @g = external global i32 |
| |
| declare void @readonlyFunction() readonly |
| declare void @noattrsFunction() |
| |
| define void @readonlyAttr() { |
| ; CHECK: 1 = MemoryDef(liveOnEntry) |
| ; CHECK-NEXT: store i32 0 |
| store i32 0, i32* @g, align 4 |
| |
| %1 = alloca i32, align 4 |
| ; CHECK: 2 = MemoryDef(1) |
| ; CHECK-NEXT: store i32 0 |
| store i32 0, i32* %1, align 4 |
| |
| ; CHECK: MemoryUse(1) |
| ; CHECK-NEXT: call void @readonlyFunction() |
| call void @readonlyFunction() |
| |
| ; CHECK: MemoryUse(1) |
| ; CHECK-NEXT: call void @noattrsFunction() # |
| ; Assume that #N is readonly |
| call void @noattrsFunction() readonly |
| |
| ; Verify that noattrsFunction is otherwise a MemoryDef |
| ; CHECK: 3 = MemoryDef(2) |
| ; CHECK-NEXT: call void @noattrsFunction() |
| call void @noattrsFunction() |
| ret void |
| } |
| |
| declare void @argMemOnly(i32*) argmemonly |
| |
| define void @inaccessableOnlyAttr() { |
| %1 = alloca i32, align 4 |
| ; CHECK: 1 = MemoryDef(liveOnEntry) |
| ; CHECK-NEXT: store i32 0 |
| store i32 0, i32* %1, align 4 |
| |
| ; CHECK: 2 = MemoryDef(1) |
| ; CHECK-NEXT: store i32 0 |
| store i32 0, i32* @g, align 4 |
| |
| ; CHECK: MemoryUse(1) |
| ; CHECK-NEXT: call void @argMemOnly(i32* %1) # |
| ; Assume that #N is readonly |
| call void @argMemOnly(i32* %1) readonly |
| |
| ; CHECK: 3 = MemoryDef(2) |
| ; CHECK-NEXT: call void @argMemOnly(i32* %1) |
| call void @argMemOnly(i32* %1) |
| |
| ret void |
| } |