xref: /llvm-project/llvm/test/Transforms/FunctionSpecialization/function-specialization-poison.ll (revision 9627bcdeac33a3c2752035455228299155c82046)
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -passes="ipsccp<func-spec>" -force-specialization -S < %s | FileCheck %s
3
4; Check that we don't crash and specialise on a poison value.
5
6%struct.quux = type { i16 }
7%struct.spam = type { i16 }
8
9@global.12 = external global %struct.quux, align 1
10
11define internal i16 @wobble(ptr byval(%struct.spam) %arg2) {
12; CHECK-LABEL: @wobble(
13; CHECK-NEXT:  bb:
14; CHECK-NEXT:    unreachable
15;
16bb:
17  unreachable
18}
19
20define internal i16 @snork() {
21; CHECK-LABEL: @snork(
22; CHECK-NEXT:  bb4:
23; CHECK-NEXT:    [[B:%.*]] = call i16 @wobble(ptr poison)
24; CHECK-NEXT:    unreachable
25;
26bb4:
27  %B = call i16 @wobble(ptr poison)
28  unreachable
29}
30
31define i16 @main() {
32; CHECK-LABEL: @main(
33; CHECK-NEXT:  bb:
34; CHECK-NEXT:    [[A:%.*]] = call i16 @snork()
35; CHECK-NEXT:    unreachable
36;
37bb:
38  %A = call i16 @snork()
39  unreachable
40}
41