1; RUN: opt < %s -aa-pipeline=cfl-steens-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
2
3; CHECK-LABEL: Function: test1
4; CHECK-DAG: MayAlias: i32* %X, i32* %tmp
5; CHECK-DAG: MayAlias: i8** %ap, i32* %tmp
6; CHECK-DAG: NoAlias: i8** %ap, i8** %aq
7; CHECK-DAG: MayAlias: i8** %aq, i32* %tmp
8
9define i32* @test1(i32* %X, ...) {
10  ; Initialize variable argument processing
11  %ap = alloca i8*
12  %ap2 = bitcast i8** %ap to i8*
13  call void @llvm.va_start(i8* %ap2)
14
15  ; Read a single pointer argument
16  %tmp = va_arg i8** %ap, i32*
17
18  ; Demonstrate usage of llvm.va_copy and llvm.va_end
19  %aq = alloca i8*
20  %aq2 = bitcast i8** %aq to i8*
21  call void @llvm.va_copy(i8* %aq2, i8* %ap2)
22  call void @llvm.va_end(i8* %aq2)
23
24  ; Stop processing of arguments.
25  call void @llvm.va_end(i8* %ap2)
26
27  load i32, i32* %X
28  load i8*, i8** %ap
29  load i8*, i8** %aq
30  load i32, i32* %tmp
31  ret i32* %tmp
32}
33
34declare void @llvm.va_start(i8*)
35declare void @llvm.va_copy(i8*, i8*)
36declare void @llvm.va_end(i8*)
37
38