1; RUN: opt < %s -functionattrs -S | FileCheck %s
2@x = global i32 0
3
4declare void @test1_1(i8* %x1_1, i8* readonly %y1_1, ...)
5
6; CHECK: define void @test1_2(i8* %x1_2, i8* readonly %y1_2, i8* %z1_2)
7define void @test1_2(i8* %x1_2, i8* %y1_2, i8* %z1_2) {
8  call void (i8*, i8*, ...) @test1_1(i8* %x1_2, i8* %y1_2, i8* %z1_2)
9  store i32 0, i32* @x
10  ret void
11}
12
13; CHECK: define i8* @test2(i8* readnone %p)
14define i8* @test2(i8* %p) {
15  store i32 0, i32* @x
16  ret i8* %p
17}
18
19; CHECK: define i1 @test3(i8* readnone %p, i8* readnone %q)
20define i1 @test3(i8* %p, i8* %q) {
21  %A = icmp ult i8* %p, %q
22  ret i1 %A
23}
24
25declare void @test4_1(i8* nocapture) readonly
26
27; CHECK: define void @test4_2(i8* nocapture readonly %p)
28define void @test4_2(i8* %p) {
29  call void @test4_1(i8* %p)
30  ret void
31}
32
33; CHECK: define void @test5(i8** nocapture %p, i8* %q)
34; Missed optz'n: we could make %q readnone, but don't break test6!
35define void @test5(i8** %p, i8* %q) {
36  store i8* %q, i8** %p
37  ret void
38}
39
40declare void @test6_1()
41; CHECK: define void @test6_2(i8** nocapture %p, i8* %q)
42; This is not a missed optz'n.
43define void @test6_2(i8** %p, i8* %q) {
44  store i8* %q, i8** %p
45  call void @test6_1()
46  ret void
47}
48
49; CHECK: define void @test7_1(i32* inalloca nocapture %a)
50; inalloca parameters are always considered written
51define void @test7_1(i32* inalloca %a) {
52  ret void
53}
54
55; CHECK: define i32* @test8_1(i32* readnone %p)
56define i32* @test8_1(i32* %p) {
57entry:
58  ret i32* %p
59}
60
61; CHECK: define void @test8_2(i32* %p)
62define void @test8_2(i32* %p) {
63entry:
64  %call = call i32* @test8_1(i32* %p)
65  store i32 10, i32* %call, align 4
66  ret void
67}
68
69; CHECK: declare void @llvm.masked.scatter
70declare void @llvm.masked.scatter.v4i32(<4 x i32>%val, <4 x i32*>, i32, <4 x i1>)
71
72; CHECK-NOT: readnone
73; CHECK-NOT: readonly
74; CHECK: define void @test9
75define void @test9(<4 x i32*> %ptrs, <4 x i32>%val) {
76  call void @llvm.masked.scatter.v4i32(<4 x i32>%val, <4 x i32*> %ptrs, i32 4, <4 x i1><i1 true, i1 false, i1 true, i1 false>)
77  ret void
78}
79
80; CHECK: declare <4 x i32> @llvm.masked.gather
81declare <4 x i32> @llvm.masked.gather.v4i32(<4 x i32*>, i32, <4 x i1>, <4 x i32>)
82; CHECK: readonly
83; CHECK: define <4 x i32> @test10
84define <4 x i32> @test10(<4 x i32*> %ptrs) {
85  %res = call <4 x i32> @llvm.masked.gather.v4i32(<4 x i32*> %ptrs, i32 4, <4 x i1><i1 true, i1 false, i1 true, i1 false>, <4 x i32>undef)
86  ret <4 x i32> %res
87}
88
89; CHECK: declare <4 x i32> @test11_1
90declare <4 x i32> @test11_1(<4 x i32*>) argmemonly nounwind readonly
91; CHECK: readonly
92; CHECK-NOT: readnone
93; CHECK: define <4 x i32> @test11_2
94define <4 x i32> @test11_2(<4 x i32*> %ptrs) {
95  %res = call <4 x i32> @test11_1(<4 x i32*> %ptrs)
96  ret <4 x i32> %res
97}
98
99declare <4 x i32> @test12_1(<4 x i32*>) argmemonly nounwind
100; CHECK-NOT: readnone
101; CHECK: define <4 x i32> @test12_2
102define <4 x i32> @test12_2(<4 x i32*> %ptrs) {
103  %res = call <4 x i32> @test12_1(<4 x i32*> %ptrs)
104  ret <4 x i32> %res
105}
106