| ; RUN: opt -basicaa -print-memoryssa -verify-memoryssa -analyze < %s 2>&1 | FileCheck %s |
| ; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s |
| ; |
| ; Ensuring that external functions without attributes are MemoryDefs |
| |
| @g = external global i32 |
| declare void @modifyG() |
| |
| define i32 @foo() { |
| ; CHECK: MemoryUse(liveOnEntry) |
| ; CHECK-NEXT: %1 = load i32 |
| %1 = load i32, i32* @g |
| |
| ; CHECK: 1 = MemoryDef(liveOnEntry) |
| ; CHECK-NEXT: store i32 4 |
| store i32 4, i32* @g, align 4 |
| |
| ; CHECK: 2 = MemoryDef(1) |
| ; CHECK-NEXT: call void @modifyG() |
| call void @modifyG() |
| |
| ; CHECK: MemoryUse(2) |
| ; CHECK-NEXT: %2 = load i32 |
| %2 = load i32, i32* @g |
| %3 = add i32 %2, %1 |
| ret i32 %3 |
| } |
| |
| declare void @readEverything() readonly |
| declare void @clobberEverything() |
| |
| ; CHECK-LABEL: define void @bar |
| define void @bar() { |
| ; CHECK: 1 = MemoryDef(liveOnEntry) |
| ; CHECK-NEXT: call void @clobberEverything() |
| call void @clobberEverything() |
| br i1 undef, label %if.end, label %if.then |
| |
| if.then: |
| ; CHECK: MemoryUse(1) |
| ; CHECK-NEXT: call void @readEverything() |
| call void @readEverything() |
| ; CHECK: 2 = MemoryDef(1) |
| ; CHECK-NEXT: call void @clobberEverything() |
| call void @clobberEverything() |
| br label %if.end |
| |
| if.end: |
| ; CHECK: 3 = MemoryPhi({%0,1},{if.then,2}) |
| ; CHECK: MemoryUse(3) |
| ; CHECK-NEXT: call void @readEverything() |
| call void @readEverything() |
| ret void |
| } |
