xref: /llvm-project/llvm/test/Analysis/BasicAA/ptrmask.ll (revision 05ff7606c9d47135ecf5b69e25b1327634f6fa27) 
1; RUN: opt -aa-pipeline=basic-aa -passes=aa-eval -print-no-aliases -disable-output %s 2>&1 | FileCheck %s
2
3%struct = type <{ [20 x i64] }>
4
5; CHECK-LABEL: Function: test_noalias
6; CHECK-NEXT:  NoAlias:	%struct* %ptr1, i64* %ptr2
7; CHECK-NEXT:  NoAlias:	%struct* %addr.ptr, i64* %ptr2
8; CHECK-NEXT:  NoAlias:	i64* %gep, i64* %ptr2
9define void @test_noalias(ptr noalias %ptr1, ptr %ptr2, i64 %offset) {
10entry:
11  %addr.ptr = call ptr @llvm.ptrmask.p0.p0.struct.i64(ptr %ptr1, i64 72057594037927928)
12  load %struct, ptr %ptr1
13  load %struct, ptr %addr.ptr
14  store i64 10, ptr %ptr2
15  %gep = getelementptr inbounds %struct, ptr %addr.ptr, i64 0, i32 0, i64 %offset
16  store i64 1, ptr %gep, align 8
17  ret void
18}
19
20; CHECK-NEXT: Function: test_alias
21; CHECK-NOT: NoAlias
22define void @test_alias(ptr %ptr1, ptr %ptr2, i64 %offset) {
23entry:
24  %addr.ptr = call ptr @llvm.ptrmask.p0.p0.struct.i64(ptr %ptr1, i64 72057594037927928)
25  load %struct, ptr %ptr1
26  load %struct, ptr %addr.ptr
27  store i64 10, ptr %ptr2
28  %gep = getelementptr inbounds %struct, ptr %addr.ptr, i64 0, i32 0, i64 %offset
29  store i64 1, ptr %gep, align 8
30  ret void
31}
32
33declare ptr @llvm.ptrmask.p0.p0.struct.i64(ptr, i64)
34