1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2
3; Test function specialization wouldn't crash due to constant expression.
4; Note that this test case shows that function specialization pass would
5; transform the function even if no specialization happened.
6
7; RUN: opt -function-specialization -force-function-specialization -S < %s | FileCheck %s
8
9%struct = type { i8, i16, i32, i64, i64}
10@Global = internal constant %struct {i8 0, i16 1, i32 2, i64 3, i64 4}
11
12define internal i64 @func2(i64 *%x) {
13entry:
14  %val = ptrtoint i64* %x to i64
15  ret i64 %val
16}
17
18define internal i64 @func(i64 *%x, i64 (i64*)* %binop) {
19; CHECK-LABEL: @func(
20; CHECK-NEXT:  entry:
21; CHECK-NEXT:    [[TMP0:%.*]] = call i64 [[BINOP:%.*]](i64* [[X:%.*]])
22; CHECK-NEXT:    ret i64 [[TMP0]]
23;
24entry:
25  %tmp0 = call i64 %binop(i64* %x)
26  ret i64 %tmp0
27}
28
29define internal i64 @zoo(i1 %flag) {
30; CHECK-LABEL: @zoo(
31; CHECK-NEXT:  entry:
32; CHECK-NEXT:    br i1 [[FLAG:%.*]], label [[PLUS:%.*]], label [[MINUS:%.*]]
33; CHECK:       plus:
34; CHECK-NEXT:    [[TMP0:%.*]] = call i64 @func2.2(i64* getelementptr inbounds ([[STRUCT:%.*]], %struct* @Global, i32 0, i32 3))
35; CHECK-NEXT:    br label [[MERGE:%.*]]
36; CHECK:       minus:
37; CHECK-NEXT:    [[TMP1:%.*]] = call i64 @func2.1(i64* getelementptr inbounds ([[STRUCT]], %struct* @Global, i32 0, i32 4))
38; CHECK-NEXT:    br label [[MERGE]]
39; CHECK:       merge:
40; CHECK-NEXT:    [[TMP2:%.*]] = phi i64 [ [[TMP0]], [[PLUS]] ], [ [[TMP1]], [[MINUS]] ]
41; CHECK-NEXT:    ret i64 [[TMP2]]
42;
43entry:
44  br i1 %flag, label %plus, label %minus
45
46plus:
47  %arg = getelementptr %struct, %struct* @Global, i32 0, i32 3
48  %tmp0 = call i64 @func2(i64* %arg)
49  br label %merge
50
51minus:
52  %arg2 = getelementptr %struct, %struct* @Global, i32 0, i32 4
53  %tmp1 = call i64 @func2(i64* %arg2)
54  br label %merge
55
56merge:
57  %tmp2 = phi i64 [ %tmp0, %plus ], [ %tmp1, %minus]
58  ret i64 %tmp2
59}
60
61
62define i64 @main() {
63; CHECK-LABEL: @main(
64; CHECK-NEXT:    [[TMP1:%.*]] = call i64 @zoo(i1 false)
65; CHECK-NEXT:    [[TMP2:%.*]] = call i64 @zoo(i1 true)
66; CHECK-NEXT:    [[TMP3:%.*]] = add i64 [[TMP1]], [[TMP2]]
67; CHECK-NEXT:    ret i64 [[TMP3]]
68;
69  %1 = call i64 @zoo(i1 0)
70  %2 = call i64 @zoo(i1 1)
71  %3 = add i64 %1, %2
72  ret i64 %3
73}
74