1; RUN: opt < %s -inline -S | FileCheck %s
2; RUN: opt < %s --passes=inline -S | FileCheck %s
3
4; Test that functions with attribute optnone are not inlined.
5; Also test that only functions with attribute alwaysinline are
6; valid candidates for inlining if the caller has the optnone attribute.
7
8; Function Attrs: alwaysinline nounwind readnone uwtable
9define i32 @alwaysInlineFunction(i32 %a) #0 {
10entry:
11  %mul = mul i32 %a, %a
12  ret i32 %mul
13}
14
15; Function Attrs: nounwind readnone uwtable
16define i32 @simpleFunction(i32 %a) #1 {
17entry:
18  %add = add i32 %a, %a
19  ret i32 %add
20}
21
22; Function Attrs: nounwind noinline optnone readnone uwtable
23define i32 @OptnoneFunction(i32 %a) #2 {
24entry:
25  %0 = tail call i32 @alwaysInlineFunction(i32 %a)
26  %1 = tail call i32 @simpleFunction(i32 %a)
27  %add = add i32 %0, %1
28  ret i32 %add
29}
30
31; CHECK-LABEL: @OptnoneFunction
32; CHECK-NOT: call i32 @alwaysInlineFunction(i32 %a)
33; CHECK: call i32 @simpleFunction(i32 %a)
34; CHECK: ret
35
36; Function Attrs: nounwind readnone uwtable
37define i32 @bar(i32 %a) #1 {
38entry:
39  %0 = tail call i32 @OptnoneFunction(i32 5)
40  %1 = tail call i32 @simpleFunction(i32 6)
41  %add = add i32 %0, %1
42  ret i32 %add
43}
44
45; CHECK-LABEL: @bar
46; CHECK: call i32 @OptnoneFunction(i32 5)
47; CHECK-NOT: call i32 @simpleFunction(i32 6)
48; CHECK: ret
49
50
51attributes #0 = { alwaysinline nounwind readnone uwtable }
52attributes #1 = { nounwind readnone uwtable }
53attributes #2 = { nounwind noinline optnone readnone uwtable }
54