xref: /llvm-project/llvm/test/Transforms/SCCP/multiple_callbacks.ll (revision 0991da36906bdb29b8f1030d5123bafb58fee79e) 
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-attributes
2; RUN: opt -passes=ipsccp -S %s | FileCheck %s
3;
4;
5;                            /---------------------------------------|
6;                            |                /----------------------|----|
7;                            |                |                /-----|    |
8;                            V                V                V     |    |
9;    void broker(int (*cb0)(int), int (*cb1)(int), int (*cb2)(int), int, int);
10;
11;    static int cb0(int zero) {
12;      return zero;
13;    }
14;    static int cb1(int unknown) {
15;      return unknown;
16;    }
17;    static int cb2(int unknown) {
18;      cb0(0);
19;      return unknown;
20;    }
21;    static int cb3(int unknown) {
22;      return unknown;
23;    }
24;    static int cb4(int unknown) {
25;      return unknown;
26;    }
27;
28;    void foo() {
29;      cb0(0);
30;      cb3(1);
31;      broker(cb0, cb1, cb0, 0, 1);
32;      broker(cb1, cb2, cb2, 0, 1);
33;      broker(cb3, cb2, cb3, 0, 1);
34;      broker(cb4, cb4, cb4, 0, 1);
35;    }
36;
37target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
38
39define internal i32 @cb0(i32 %zero) {
40; CHECK-LABEL: @cb0(
41; CHECK-NEXT:  entry:
42; CHECK-NEXT:    ret i32 [[ZERO:%.*]]
43;
44entry:
45  ret i32 %zero
46}
47
48define internal i32 @cb1(i32 %unknown) {
49; CHECK-LABEL: @cb1(
50; CHECK-NEXT:  entry:
51; CHECK-NEXT:    ret i32 [[UNKNOWN:%.*]]
52;
53entry:
54  ret i32 %unknown
55}
56
57define internal i32 @cb2(i32 %unknown) {
58; CHECK-LABEL: @cb2(
59; CHECK-NEXT:  entry:
60; CHECK-NEXT:    [[CALL:%.*]] = call i32 @cb0(i32 0)
61; CHECK-NEXT:    ret i32 [[UNKNOWN:%.*]]
62;
63entry:
64  %call = call i32 @cb0(i32 0)
65  ret i32 %unknown
66}
67
68define internal i32 @cb3(i32 %unknown) {
69; CHECK-LABEL: @cb3(
70; CHECK-NEXT:  entry:
71; CHECK-NEXT:    ret i32 [[UNKNOWN:%.*]]
72;
73entry:
74  ret i32 %unknown
75}
76
77define internal i32 @cb4(i32 %unknown) {
78; CHECK-LABEL: @cb4(
79; CHECK-NEXT:  entry:
80; CHECK-NEXT:    ret i32 [[UNKNOWN:%.*]]
81;
82entry:
83  ret i32 %unknown
84}
85
86define void @foo() {
87; CHECK-LABEL: @foo(
88; CHECK-NEXT:  entry:
89; CHECK-NEXT:    [[CALL:%.*]] = call i32 @cb0(i32 0)
90; CHECK-NEXT:    [[CALL1:%.*]] = call i32 @cb3(i32 1)
91; CHECK-NEXT:    call void @broker(ptr nonnull @cb0, ptr nonnull @cb1, ptr nonnull @cb0, i32 0, i32 1)
92; CHECK-NEXT:    call void @broker(ptr nonnull @cb1, ptr nonnull @cb2, ptr nonnull @cb2, i32 0, i32 1)
93; CHECK-NEXT:    call void @broker(ptr nonnull @cb3, ptr nonnull @cb2, ptr nonnull @cb3, i32 0, i32 1)
94; CHECK-NEXT:    call void @broker(ptr nonnull @cb4, ptr nonnull @cb4, ptr nonnull @cb4, i32 0, i32 1)
95; CHECK-NEXT:    ret void
96;
97entry:
98  %call = call i32 @cb0(i32 0)
99  %call1 = call i32 @cb3(i32 1)
100  call void @broker(ptr nonnull @cb0, ptr nonnull @cb1, ptr nonnull @cb0, i32 0, i32 1)
101  call void @broker(ptr nonnull @cb1, ptr nonnull @cb2, ptr nonnull @cb2, i32 0, i32 1)
102  call void @broker(ptr nonnull @cb3, ptr nonnull @cb2, ptr nonnull @cb3, i32 0, i32 1)
103  call void @broker(ptr nonnull @cb4, ptr nonnull @cb4, ptr nonnull @cb4, i32 0, i32 1)
104  ret void
105}
106
107declare !callback !3 void @broker(ptr, ptr, ptr, i32, i32)
108
109!0 = !{i64 0, i64 3, i1 false}
110!1 = !{i64 1, i64 4, i1 false}
111!2 = !{i64 2, i64 3, i1 false}
112!3 = !{!0, !2, !1}
113