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) {
13; CHECK-LABEL: @func2(
14; CHECK-NEXT:  entry:
15; CHECK-NEXT:    [[VAL:%.*]] = ptrtoint i64* [[X:%.*]] to i64
16; CHECK-NEXT:    ret i64 [[VAL]]
17;
18entry:
19  %val = ptrtoint i64* %x to i64
20  ret i64 %val
21}
22
23define internal i64 @func(i64 *%x, i64 (i64*)* %binop) {
24; CHECK-LABEL: @func(
25; CHECK-NEXT:  entry:
26; CHECK-NEXT:    [[TMP0:%.*]] = call i64 [[BINOP:%.*]](i64* [[X:%.*]])
27; CHECK-NEXT:    ret i64 [[TMP0]]
28;
29entry:
30  %tmp0 = call i64 %binop(i64* %x)
31  ret i64 %tmp0
32}
33
34define internal i64 @zoo(i1 %flag) {
35; CHECK-LABEL: @zoo(
36; CHECK-NEXT:  entry:
37; CHECK-NEXT:    br i1 [[FLAG:%.*]], label [[PLUS:%.*]], label [[MINUS:%.*]]
38; CHECK:       plus:
39; CHECK-NEXT:    [[TMP0:%.*]] = call i64 @func2(i64* getelementptr inbounds ([[STRUCT:%.*]], %struct* @Global, i32 0, i32 3))
40; CHECK-NEXT:    br label [[MERGE:%.*]]
41; CHECK:       minus:
42; CHECK-NEXT:    [[TMP1:%.*]] = call i64 @func2(i64* getelementptr inbounds ([[STRUCT]], %struct* @Global, i32 0, i32 4))
43; CHECK-NEXT:    br label [[MERGE]]
44; CHECK:       merge:
45; CHECK-NEXT:    [[TMP2:%.*]] = phi i64 [ [[TMP0]], [[PLUS]] ], [ [[TMP1]], [[MINUS]] ]
46; CHECK-NEXT:    ret i64 [[TMP2]]
47;
48entry:
49  br i1 %flag, label %plus, label %minus
50
51plus:
52  %arg = getelementptr %struct, %struct* @Global, i32 0, i32 3
53  %tmp0 = call i64 @func2(i64* %arg)
54  br label %merge
55
56minus:
57  %arg2 = getelementptr %struct, %struct* @Global, i32 0, i32 4
58  %tmp1 = call i64 @func2(i64* %arg2)
59  br label %merge
60
61merge:
62  %tmp2 = phi i64 [ %tmp0, %plus ], [ %tmp1, %minus]
63  ret i64 %tmp2
64}
65
66
67define i64 @main() {
68; CHECK-LABEL: @main(
69; CHECK-NEXT:    [[TMP1:%.*]] = call i64 @zoo(i1 false)
70; CHECK-NEXT:    [[TMP2:%.*]] = call i64 @zoo(i1 true)
71; CHECK-NEXT:    [[TMP3:%.*]] = add i64 [[TMP1]], [[TMP2]]
72; CHECK-NEXT:    ret i64 [[TMP3]]
73;
74  %1 = call i64 @zoo(i1 0)
75  %2 = call i64 @zoo(i1 1)
76  %3 = add i64 %1, %2
77  ret i64 %3
78}
79