1; RUN: opt -S -objc-arc-contract < %s | FileCheck %s
2
3target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
4target triple = "i686--windows-msvc19.11.0"
5
6%0 = type opaque
7
8declare i32 @__CxxFrameHandler3(...)
9declare dllimport void @llvm.objc.release(i8*) local_unnamed_addr
10declare dllimport i8* @llvm.objc.retain(i8* returned) local_unnamed_addr
11
12@p = global i8* null, align 4
13
14declare void @f() local_unnamed_addr
15
16define void @g() local_unnamed_addr personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
17entry:
18  %tmp = load i8*, i8** @p, align 4
19  %cast = bitcast i8* %tmp to %0*
20  %tmp1 = tail call i8* @llvm.objc.retain(i8* %tmp) #0
21  ; Split the basic block to ensure bitcast ends up in entry.split.
22  br label %entry.split
23
24entry.split:
25  invoke void @f()
26          to label %invoke.cont unwind label %catch.dispatch
27
28; Dummy nested catchswitch to test looping through the dominator tree.
29catch.dispatch:
30  %tmp2 = catchswitch within none [label %catch] unwind label %catch.dispatch1
31
32catch:
33  %tmp3 = catchpad within %tmp2 [i8* null, i32 64, i8* null]
34  catchret from %tmp3 to label %invoke.cont
35
36catch.dispatch1:
37  %tmp4 = catchswitch within none [label %catch1] unwind label %ehcleanup
38
39catch1:
40  %tmp5 = catchpad within %tmp4 [i8 *null, i32 64, i8* null]
41  catchret from %tmp5 to label %invoke.cont
42
43invoke.cont:
44  %tmp6 = load i8*, i8** @p, align 4
45  %cast1 = bitcast i8* %tmp6 to %0*
46  %tmp7 = tail call i8* @llvm.objc.retain(i8* %tmp6) #0
47  call void @llvm.objc.release(i8* %tmp) #0, !clang.imprecise_release !0
48  ; Split the basic block to ensure bitcast ends up in invoke.cont.split.
49  br label %invoke.cont.split
50
51invoke.cont.split:
52  invoke void @f()
53          to label %invoke.cont1 unwind label %ehcleanup
54
55invoke.cont1:
56  ret void
57
58ehcleanup:
59  %tmp8 = phi %0* [ %cast, %catch.dispatch1 ], [ %cast1, %invoke.cont.split ]
60  %tmp9 = cleanuppad within none []
61  %tmp10 = bitcast %0* %tmp8 to i8*
62  call void @llvm.objc.release(i8* %tmp10) #0 [ "funclet"(token %tmp9) ]
63  cleanupret from %tmp9 unwind to caller
64}
65
66; CHECK-LABEL: entry.split:
67; CHECK-NEXT:    %0 = bitcast i8* %tmp1 to %0*
68; CHECK-NEXT:    invoke void @f()
69; CHECK-NEXT:            to label %invoke.cont unwind label %catch.dispatch
70
71; CHECK-LABEL: invoke.cont.split:
72; CHECK-NEXT:    %1 = bitcast i8* %tmp7 to %0*
73; CHECK-NEXT:    invoke void @f()
74; CHECK-NEXT:            to label %invoke.cont1 unwind label %ehcleanup
75
76; CHECK-LABEL: ehcleanup:
77; CHECK-NEXT:    %tmp8 = phi %0* [ %0, %catch.dispatch1 ], [ %1, %invoke.cont.split ]
78
79attributes #0 = { nounwind }
80
81!0 = !{}
82