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 -passes="ipsccp<func-spec>" -force-specialization -funcspec-for-literal-constant=false -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(ptr %x) {
13entry:
14  %val = ptrtoint ptr %x to i64
15  ret i64 %val
16}
17
18define internal i64 @func(ptr %x, ptr %binop) {
19; CHECK-LABEL: @func(
20; CHECK-NEXT:  entry:
21; CHECK-NEXT:    unreachable
22;
23entry:
24  %tmp0 = call i64 %binop(ptr %x)
25  ret i64 %tmp0
26}
27
28define internal i64 @zoo(i1 %flag) {
29; CHECK-LABEL: @zoo(
30; CHECK-NEXT:  entry:
31; CHECK-NEXT:    br i1 [[FLAG:%.*]], label [[PLUS:%.*]], label [[MINUS:%.*]]
32; CHECK:       plus:
33; CHECK-NEXT:    [[TMP0:%.*]] = call i64 @func2.specialized.2(ptr getelementptr inbounds nuw (i8, ptr @Global, i64 8))
34; CHECK-NEXT:    br label [[MERGE:%.*]]
35; CHECK:       minus:
36; CHECK-NEXT:    [[TMP1:%.*]] = call i64 @func2.specialized.1(ptr getelementptr inbounds nuw (i8, ptr @Global, i64 16))
37; CHECK-NEXT:    br label [[MERGE]]
38; CHECK:       merge:
39; CHECK-NEXT:    [[TMP2:%.*]] = phi i64 [ ptrtoint (ptr getelementptr inbounds nuw (i8, ptr @Global, i64 8) to i64), [[PLUS]] ], [ ptrtoint (ptr getelementptr inbounds nuw (i8, ptr @Global, i64 16) to i64), [[MINUS]] ]
40; CHECK-NEXT:    ret i64 [[TMP2]]
41;
42entry:
43  br i1 %flag, label %plus, label %minus
44
45plus:
46  %arg = getelementptr %struct, ptr @Global, i32 0, i32 3
47  %tmp0 = call i64 @func2(ptr %arg)
48  br label %merge
49
50minus:
51  %arg2 = getelementptr %struct, ptr @Global, i32 0, i32 4
52  %tmp1 = call i64 @func2(ptr %arg2)
53  br label %merge
54
55merge:
56  %tmp2 = phi i64 [ %tmp0, %plus ], [ %tmp1, %minus]
57  ret i64 %tmp2
58}
59
60
61define i64 @main() {
62; CHECK-LABEL: @main(
63; CHECK-NEXT:    [[TMP1:%.*]] = call i64 @zoo(i1 false)
64; CHECK-NEXT:    [[TMP2:%.*]] = call i64 @zoo(i1 true)
65; CHECK-NEXT:    [[TMP3:%.*]] = add i64 [[TMP1]], [[TMP2]]
66; CHECK-NEXT:    ret i64 [[TMP3]]
67;
68  %1 = call i64 @zoo(i1 0)
69  %2 = call i64 @zoo(i1 1)
70  %3 = add i64 %1, %2
71  ret i64 %3
72}
73
74