xref: /llvm-project/llvm/test/Transforms/SCCP/pthreads.ll (revision 0991da36906bdb29b8f1030d5123bafb58fee79e)
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -passes=ipsccp -S < %s | FileCheck %s
3;
4;    #include <pthread.h>
5;
6;    ptr GlobalVPtr;
7;
8;    static ptr foo(ptr arg) { return arg; }
9;    static ptr bar(ptr 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 ptr null, align 8
26
27define dso_local i32 @main() {
28; CHECK-LABEL: @main(
29; CHECK-NEXT:  entry:
30; CHECK-NEXT:    [[THREAD:%.*]] = alloca i64, align 8
31; CHECK-NEXT:    [[CALL:%.*]] = call i32 @pthread_create(ptr nonnull [[THREAD]], ptr null, ptr nonnull @foo, ptr null)
32; CHECK-NEXT:    [[CALL1:%.*]] = call i32 @pthread_create(ptr nonnull [[THREAD]], ptr null, ptr nonnull @bar, ptr @GlobalVPtr)
33; CHECK-NEXT:    ret i32 0
34;
35entry:
36  %thread = alloca i64, align 8
37  %call = call i32 @pthread_create(ptr nonnull %thread, ptr null, ptr nonnull @foo, ptr null)
38  %call1 = call i32 @pthread_create(ptr nonnull %thread, ptr null, ptr nonnull @bar, ptr @GlobalVPtr)
39  ret i32 0
40}
41
42declare !callback !0 dso_local i32 @pthread_create(ptr, ptr, ptr, ptr)
43
44define internal ptr @foo(ptr %arg) {
45; CHECK-LABEL: @foo(
46; CHECK-NEXT:  entry:
47; CHECK-NEXT:    ret ptr [[ARG:%.*]]
48;
49entry:
50  ret ptr %arg
51}
52
53define internal ptr @bar(ptr %arg) {
54; CHECK-LABEL: @bar(
55; CHECK-NEXT:  entry:
56; CHECK-NEXT:    ret ptr [[ARG:%.*]]
57;
58entry:
59  ret ptr %arg
60}
61
62!1 = !{i64 2, i64 3, i1 false}
63!0 = !{!1}
64