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1; RUN: opt < %s -function-attrs -S | FileCheck %s
2; RUN: opt < %s -passes=function-attrs -S | FileCheck %s
3
4; CHECK: define i32* @a(i32** nocapture readonly %p)
5define i32* @a(i32** %p) {
6	%tmp = load i32*, i32** %p
7	ret i32* %tmp
8}
9
10; CHECK: define i32* @b(i32* %q)
11define i32* @b(i32 *%q) {
12	%mem = alloca i32*
13	store i32* %q, i32** %mem
14	%tmp = call i32* @a(i32** %mem)
15	ret i32* %tmp
16}
17
18; CHECK: define i32* @c(i32* readnone returned %r)
19@g = global i32 0
20define i32* @c(i32 *%r) {
21	%a = icmp eq i32* %r, null
22	store i32 1, i32* @g
23	ret i32* %r
24}
25