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; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s
; This test checks that lifetime markers are considered clobbers of %P,
; and due to lack of noalias information, of %Q as well.
declare ptr @obscure(ptr) memory(none)
define i8 @test() {
entry:
%P = alloca [32 x i8]
%Q = call ptr @obscure(ptr %P)
; CHECK: 1 = MemoryDef(liveOnEntry)
; CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr %P)
call void @llvm.lifetime.start.p0(ptr %P)
; CHECK: MemoryUse(1)
; CHECK-NEXT: %0 = load i8, ptr %P
%0 = load i8, ptr %P
; CHECK: 2 = MemoryDef(1)
; CHECK-NEXT: store i8 1, ptr %P
store i8 1, ptr %P
; CHECK: 3 = MemoryDef(2)
; CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr %P)
call void @llvm.lifetime.end.p0(ptr %P)
; CHECK: MemoryUse(3)
; CHECK-NEXT: %1 = load i8, ptr %P
%1 = load i8, ptr %P
; CHECK: MemoryUse(3)
; CHECK-NEXT: %2 = load i8, ptr %Q
%2 = load i8, ptr %Q
ret i8 %1
}
declare void @llvm.lifetime.start.p0(ptr nocapture %P) readonly
declare void @llvm.lifetime.end.p0(ptr nocapture %P)
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