1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --scrub-attributes
2; RUN: opt -S -passes=attributor -aa-pipeline='basic-aa' -attributor-disable=false -attributor-max-iterations-verify -attributor-max-iterations=1 < %s | FileCheck %s
3;
4;    #include <pthread.h>
5;
6;    void *GlobalVPtr;
7;
8;    static void *foo(void *arg) { return arg; }
9;    static void *bar(void *arg) { return arg; }
10;
11;    int main() {
12;      pthread_t thread;
13;      pthread_create(&thread, NULL, foo, NULL);
14;      pthread_create(&thread, NULL, bar, &GlobalVPtr);
15;      return 0;
16;    }
17;
18; Verify the constant values NULL and &GlobalVPtr are propagated into foo and
19; bar, respectively.
20;
21target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
22
23%union.pthread_attr_t = type { i64, [48 x i8] }
24
25@GlobalVPtr = common dso_local global i8* null, align 8
26
27; FIXME: nocapture & noalias for @GlobalVPtr in %call1
28; FIXME: nocapture & noalias for %alloc2 in %call3
29
30define dso_local i32 @main() {
31; CHECK-LABEL: define {{[^@]+}}@main()
32; CHECK-NEXT:  entry:
33; CHECK-NEXT:    [[ALLOC1:%.*]] = alloca i8, align 8
34; CHECK-NEXT:    [[ALLOC2:%.*]] = alloca i8, align 8
35; CHECK-NEXT:    [[THREAD:%.*]] = alloca i64, align 8
36; CHECK-NEXT:    [[CALL:%.*]] = call i32 @pthread_create(i64* nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias null, i8* (i8*)* nonnull @foo, i8* noalias nofree readnone null)
37; CHECK-NEXT:    [[CALL1:%.*]] = call i32 @pthread_create(i64* nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias null, i8* (i8*)* nonnull @bar, i8* nofree nonnull readnone align 8 dereferenceable(8) bitcast (i8** @GlobalVPtr to i8*))
38; CHECK-NEXT:    [[CALL2:%.*]] = call i32 @pthread_create(i64* nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias null, i8* (i8*)* nonnull @baz, i8* noalias nocapture nofree nonnull readnone align 8 dereferenceable(1) [[ALLOC1]])
39; CHECK-NEXT:    [[CALL3:%.*]] = call i32 @pthread_create(i64* nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias null, i8* (i8*)* nonnull @buz, i8* nofree nonnull readnone align 8 dereferenceable(1) [[ALLOC2]])
40; CHECK-NEXT:    ret i32 0
41;
42entry:
43  %alloc1 = alloca i8, align 8
44  %alloc2 = alloca i8, align 8
45  %thread = alloca i64, align 8
46  %call = call i32 @pthread_create(i64* nonnull %thread, %union.pthread_attr_t* null, i8* (i8*)* nonnull @foo, i8* null)
47  %call1 = call i32 @pthread_create(i64* nonnull %thread, %union.pthread_attr_t* null, i8* (i8*)* nonnull @bar, i8* bitcast (i8** @GlobalVPtr to i8*))
48  %call2 = call i32 @pthread_create(i64* nonnull %thread, %union.pthread_attr_t* null, i8* (i8*)* nonnull @baz, i8* nocapture %alloc1)
49  %call3 = call i32 @pthread_create(i64* nonnull %thread, %union.pthread_attr_t* null, i8* (i8*)* nonnull @buz, i8* %alloc2)
50  ret i32 0
51}
52
53declare !callback !0 dso_local i32 @pthread_create(i64*, %union.pthread_attr_t*, i8* (i8*)*, i8*)
54
55define internal i8* @foo(i8* %arg) {
56; CHECK-LABEL: define {{[^@]+}}@foo
57; CHECK-SAME: (i8* noalias nofree readnone returned [[ARG:%.*]])
58; CHECK-NEXT:  entry:
59; CHECK-NEXT:    ret i8* null
60;
61entry:
62  ret i8* %arg
63}
64
65define internal i8* @bar(i8* %arg) {
66; CHECK-LABEL: define {{[^@]+}}@bar
67; CHECK-SAME: (i8* nofree nonnull readnone returned align 8 dereferenceable(8) [[ARG:%.*]])
68; CHECK-NEXT:  entry:
69; CHECK-NEXT:    ret i8* bitcast (i8** @GlobalVPtr to i8*)
70;
71entry:
72  ret i8* %arg
73}
74
75define internal i8* @baz(i8* %arg) {
76; CHECK-LABEL: define {{[^@]+}}@baz
77; CHECK-SAME: (i8* noalias nofree nonnull readnone returned align 8 dereferenceable(1) [[ARG:%.*]])
78; CHECK-NEXT:  entry:
79; CHECK-NEXT:    ret i8* [[ARG]]
80;
81entry:
82  ret i8* %arg
83}
84
85define internal i8* @buz(i8* %arg) {
86; CHECK-LABEL: define {{[^@]+}}@buz
87; CHECK-SAME: (i8* nofree nonnull readnone returned align 8 dereferenceable(1) [[ARG:%.*]])
88; CHECK-NEXT:  entry:
89; CHECK-NEXT:    ret i8* [[ARG]]
90;
91entry:
92  ret i8* %arg
93}
94
95!1 = !{i64 2, i64 3, i1 false}
96!0 = !{!1}
97