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 @zoo(i1 %flag) {
13; CHECK-LABEL: @zoo(
14; CHECK-NEXT:  entry:
15; CHECK-NEXT:    br i1 [[FLAG:%.*]], label [[PLUS:%.*]], label [[MINUS:%.*]]
16; CHECK:       plus:
17; CHECK-NEXT:    [[TMP0:%.*]] = call i64 @func2.1(i64* getelementptr inbounds ([[STRUCT:%.*]], %struct* @Global, i32 0, i32 3))
18; CHECK-NEXT:    br label [[MERGE:%.*]]
19; CHECK:       minus:
20; CHECK-NEXT:    [[TMP1:%.*]] = call i64 @func2.2(i64* getelementptr inbounds ([[STRUCT]], %struct* @Global, i32 0, i32 4))
21; CHECK-NEXT:    br label [[MERGE]]
22; CHECK:       merge:
23; CHECK-NEXT:    [[TMP2:%.*]] = phi i64 [ [[TMP0]], [[PLUS]] ], [ [[TMP1]], [[MINUS]] ]
24; CHECK-NEXT:    ret i64 [[TMP2]]
25;
26entry:
27  br i1 %flag, label %plus, label %minus
28
29plus:
30  %arg = getelementptr %struct, %struct* @Global, i32 0, i32 3
31  %tmp0 = call i64 @func2(i64* %arg)
32  br label %merge
33
34minus:
35  %arg2 = getelementptr %struct, %struct* @Global, i32 0, i32 4
36  %tmp1 = call i64 @func2(i64* %arg2)
37  br label %merge
38
39merge:
40  %tmp2 = phi i64 [ %tmp0, %plus ], [ %tmp1, %minus]
41  ret i64 %tmp2
42}
43
44define internal i64 @func2(i64 *%x) {
45; CHECK-LABEL: @func2(
46; CHECK-NEXT:  entry:
47; CHECK-NEXT:    [[VAL:%.*]] = ptrtoint i64* [[X:%.*]] to i64
48; CHECK-NEXT:    ret i64 [[VAL]]
49;
50entry:
51  %val = ptrtoint i64* %x to i64
52  ret i64 %val
53}
54
55define internal i64 @func(i64 *%x, i64 (i64*)* %binop) {
56; CHECK-LABEL: @func(
57; CHECK-NEXT:  entry:
58; CHECK-NEXT:    [[TMP0:%.*]] = call i64 [[BINOP:%.*]](i64* [[X:%.*]])
59; CHECK-NEXT:    ret i64 [[TMP0]]
60;
61entry:
62  %tmp0 = call i64 %binop(i64* %x)
63  ret i64 %tmp0
64}
65
66define i64 @main() {
67; CHECK-LABEL: @main(
68; CHECK-NEXT:    [[TMP1:%.*]] = call i64 @zoo(i1 false)
69; CHECK-NEXT:    [[TMP2:%.*]] = call i64 @zoo(i1 true)
70; CHECK-NEXT:    [[TMP3:%.*]] = add i64 [[TMP1]], [[TMP2]]
71; CHECK-NEXT:    ret i64 [[TMP3]]
72;
73  %1 = call i64 @zoo(i1 0)
74  %2 = call i64 @zoo(i1 1)
75  %3 = add i64 %1, %2
76  ret i64 %3
77}
78
79; CHECK-LABEL: define internal i64 @func2.1(
80; CHECK-NEXT:  entry:
81; CHECK-NEXT:    ret i64 ptrtoint (i64* getelementptr inbounds (%struct, %struct* @Global, i32 0, i32 3) to i64)
82; CHECK-NEXT:  }
83
84; CHECK-LABEL: define internal i64 @func2.2(
85; CHECK-NEXT:  entry:
86; CHECK-NEXT:    ret i64 ptrtoint (i64* getelementptr inbounds (%struct, %struct* @Global, i32 0, i32 4) to i64)
87; CHECK-NEXT:  }
88