1; RUN: opt -S < %s | FileCheck %s
2
3; Test to ensure that calls to the memcpy/memmove/memset intrinsics are auto-upgraded
4; to remove the alignment parameter in favour of align attributes on the pointer args.
5
6; Make sure a non-zero alignment is propagated
7define void @test(i8* %p1, i8* %p2, i8* %p3) {
8; CHECK-LABEL: @test
9; CHECK: call void @llvm.memset.p0i8.i64(i8* align 4 %p1, i8 55, i64 100, i1 false)
10; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %p1, i8* align 4 %p2, i64 50, i1 false)
11; CHECK: call void @llvm.memmove.p0i8.p0i8.i64(i8* align 4 %p2, i8* align 4 %p3, i64 1000, i1 false)
12  call void @llvm.memset.p0i8.i64(i8* %p1, i8 55, i64 100, i32 4, i1 false)
13  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %p1, i8* %p2, i64 50, i32 4, i1 false)
14  call void @llvm.memmove.p0i8.p0i8.i64(i8* %p2, i8* %p3, i64 1000, i32 4, i1 false)
15  ret void
16}
17
18; Make sure that a zero alignment is handled properly
19define void @test2(i8* %p1, i8* %p2, i8* %p3) {
20; CHECK-LABEL: @test
21; CHECK: call void @llvm.memset.p0i8.i64(i8* %p1, i8 55, i64 100, i1 false)
22; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %p1, i8* %p2, i64 50, i1 false)
23; CHECK: call void @llvm.memmove.p0i8.p0i8.i64(i8* %p2, i8* %p3, i64 1000, i1 false)
24  call void @llvm.memset.p0i8.i64(i8* %p1, i8 55, i64 100, i32 0, i1 false)
25  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %p1, i8* %p2, i64 50, i32 0, i1 false)
26  call void @llvm.memmove.p0i8.p0i8.i64(i8* %p2, i8* %p3, i64 1000, i32 0, i1 false)
27  ret void
28}
29
30; Make sure that attributes are not dropped
31define void @test3(i8* %p1, i8* %p2, i8* %p3) {
32; CHECK-LABEL: @test
33; CHECK: call void @llvm.memset.p0i8.i64(i8* nonnull align 4 %p1, i8 signext 55, i64 zeroext 100, i1 immarg false)
34; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 4 %p1, i8* readonly align 4 %p2, i64 zeroext 50, i1 immarg false)
35; CHECK: call void @llvm.memmove.p0i8.p0i8.i64(i8* nonnull align 4 %p2, i8* readonly align 4 %p3, i64 zeroext 1000, i1 immarg false)
36  call void @llvm.memset.p0i8.i64(i8* nonnull %p1, i8 signext 55, i64 zeroext 100, i32 signext 4, i1 immarg false)
37  call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull %p1, i8* readonly %p2, i64 zeroext 50, i32 signext 4, i1 immarg false)
38  call void @llvm.memmove.p0i8.p0i8.i64(i8* nonnull %p2, i8* readonly %p3, i64 zeroext 1000, i32 signext 4, i1 immarg false)
39  ret void
40}
41
42; CHECK: declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i1 immarg)
43; CHECK: declare void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nocapture writeonly, i8* noalias nocapture readonly, i64, i1 immarg)
44; CHECK: declare void @llvm.memmove.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i1 immarg)
45declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i32, i1)
46declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly , i8* nocapture readonly, i64, i32, i1)
47declare void @llvm.memmove.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i32, i1)
48
49