1; RUN: opt -S -lowertypetests < %s | llc -asm-verbose=false -disable-wasm-fallthrough-return-opt -wasm-keep-registers | FileCheck %s
2
3; Tests that we correctly assign indexes for control flow integrity.
4
5target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
6target triple = "wasm32-unknown-unknown"
7
8@0 = private unnamed_addr constant [2 x void (...)*] [void (...)* bitcast (void ()* @f to void (...)*), void (...)* bitcast (void ()* @g to void (...)*)], align 16
9
10; CHECK-LABEL: h:
11; CHECK-NOT: .indidx
12define void @h() !type !0 {
13  ret void
14}
15
16; CHECK-LABEL: f:
17; CHECK: .indidx 1
18define void @f() !type !0 {
19  ret void
20}
21
22; CHECK-LABEL: g:
23; CHECK: .indidx 2
24define void @g() !type !1 {
25  ret void
26}
27
28!0 = !{i32 0, !"typeid1"}
29!1 = !{i32 0, !"typeid2"}
30
31declare i1 @llvm.type.test(i8* %ptr, metadata %bitset) nounwind readnone
32declare void @llvm.trap() nounwind noreturn
33
34; CHECK-LABEL: foo:
35; CHECK: br_if
36; CHECK: br_if
37; CHECK: unreachable
38define i1 @foo(i8* %p) {
39  %x = call i1 @llvm.type.test(i8* %p, metadata !"typeid1")
40  br i1 %x, label %contx, label %trap
41
42trap:
43  tail call void @llvm.trap() #1
44  unreachable
45
46contx:
47  %y = call i1 @llvm.type.test(i8* %p, metadata !"typeid2")
48  br i1 %y, label %conty, label %trap
49
50conty:
51  %z = add i1 %x, %y
52  ret i1 %z
53}
54