1 ; RUN: opt -S -objc-arc-contract < %s | FileCheck %s
3 target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
4 target triple = "i686--windows-msvc19.11.0"
8 declare i32 @__CxxFrameHandler3(...)
9 declare dllimport void @llvm.objc.release(i8*) local_unnamed_addr
10 declare dllimport i8* @llvm.objc.retain(i8* returned) local_unnamed_addr
12 @p = global i8* null, align 4
14 declare void @f() local_unnamed_addr
16 define void @g() local_unnamed_addr personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
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.
26 to label %invoke.cont unwind label %catch.dispatch
28 ; Dummy nested catchswitch to test looping through the dominator tree.
30 %tmp2 = catchswitch within none [label %catch] unwind label %catch.dispatch1
33 %tmp3 = catchpad within %tmp2 [i8* null, i32 64, i8* null]
34 catchret from %tmp3 to label %invoke.cont
37 %tmp4 = catchswitch within none [label %catch1] unwind label %ehcleanup
40 %tmp5 = catchpad within %tmp4 [i8 *null, i32 64, i8* null]
41 catchret from %tmp5 to label %invoke.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
53 to label %invoke.cont1 unwind label %ehcleanup
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
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
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
76 ; CHECK-LABEL: ehcleanup:
77 ; CHECK-NEXT: %tmp8 = phi %0* [ %0, %catch.dispatch1 ], [ %1, %invoke.cont.split ]
79 attributes #0 = { nounwind }