1 ; RUN: opt -passes=objc-arc -S < %s | FileCheck %s
4 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
6 %struct.__block_byref_weakLogNTimes = type { ptr, ptr, i32, i32, ptr, ptr, ptr }
7 %struct.__block_descriptor = type { i64, i64 }
9 ; Don't optimize away the retainBlock, because the object's address "escapes"
10 ; with the objc_storeWeak call.
12 ; CHECK-LABEL: define void @test0(
13 ; CHECK: %tmp7 = call ptr @llvm.objc.retainBlock(ptr %block) [[NUW:#[0-9]+]], !clang.arc.copy_on_escape !0
14 ; CHECK: call void @llvm.objc.release(ptr %tmp7) [[NUW]], !clang.imprecise_release !0
16 define void @test0() nounwind {
18 %weakLogNTimes = alloca %struct.__block_byref_weakLogNTimes, align 8
19 %block = alloca <{ ptr, i32, i32, ptr, ptr, ptr }>, align 8
20 store ptr null, ptr %weakLogNTimes, align 8
21 %byref.forwarding = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 1
22 store ptr %weakLogNTimes, ptr %byref.forwarding, align 8
23 %byref.flags = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 2
24 store i32 33554432, ptr %byref.flags, align 8
25 %byref.size = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 3
26 store i32 48, ptr %byref.size, align 4
27 %tmp1 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 4
28 store ptr @__Block_byref_object_copy_, ptr %tmp1, align 8
29 %tmp2 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 5
30 store ptr @__Block_byref_object_dispose_, ptr %tmp2, align 8
31 %weakLogNTimes1 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 6
32 %tmp4 = call ptr @llvm.objc.initWeak(ptr %weakLogNTimes1, ptr null) nounwind
33 %block.isa = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 0
34 store ptr null, ptr %block.isa, align 8
35 %block.flags = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 1
36 store i32 1107296256, ptr %block.flags, align 8
37 %block.reserved = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 2
38 store i32 0, ptr %block.reserved, align 4
39 %block.invoke = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 3
40 store ptr @__main_block_invoke_0, ptr %block.invoke, align 8
41 %block.descriptor = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 4
42 store ptr null, ptr %block.descriptor, align 8
43 %block.captured = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 5
44 store ptr %weakLogNTimes, ptr %block.captured, align 8
45 %tmp7 = call ptr @llvm.objc.retainBlock(ptr %block) nounwind, !clang.arc.copy_on_escape !0
46 %tmp8 = load ptr, ptr %byref.forwarding, align 8
47 %weakLogNTimes3 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %tmp8, i64 0, i32 6
48 %tmp10 = call ptr @llvm.objc.storeWeak(ptr %weakLogNTimes3, ptr %tmp7) nounwind
49 %tmp11 = getelementptr inbounds i8, ptr %tmp7, i64 16
50 %tmp13 = load ptr, ptr %tmp11, align 8
51 call void %tmp13(ptr %tmp7, i32 10) nounwind, !clang.arc.no_objc_arc_exceptions !0
52 call void @llvm.objc.release(ptr %tmp7) nounwind, !clang.imprecise_release !0
53 call void @_Block_object_dispose(ptr %weakLogNTimes, i32 8) nounwind
54 call void @llvm.objc.destroyWeak(ptr %weakLogNTimes1) nounwind
58 ; Like test0, but it makes a regular call instead of a storeWeak call,
59 ; so the optimization is valid.
61 ; CHECK-LABEL: define void @test1(
62 ; CHECK-NOT: @llvm.objc.retainBlock
64 define void @test1() nounwind {
66 %weakLogNTimes = alloca %struct.__block_byref_weakLogNTimes, align 8
67 %block = alloca <{ ptr, i32, i32, ptr, ptr, ptr }>, align 8
68 store ptr null, ptr %weakLogNTimes, align 8
69 %byref.forwarding = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 1
70 store ptr %weakLogNTimes, ptr %byref.forwarding, align 8
71 %byref.flags = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 2
72 store i32 33554432, ptr %byref.flags, align 8
73 %byref.size = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 3
74 store i32 48, ptr %byref.size, align 4
75 %tmp1 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 4
76 store ptr @__Block_byref_object_copy_, ptr %tmp1, align 8
77 %tmp2 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 5
78 store ptr @__Block_byref_object_dispose_, ptr %tmp2, align 8
79 %weakLogNTimes1 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %weakLogNTimes, i64 0, i32 6
80 %tmp4 = call ptr @llvm.objc.initWeak(ptr %weakLogNTimes1, ptr null) nounwind
81 %block.isa = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 0
82 store ptr null, ptr %block.isa, align 8
83 %block.flags = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 1
84 store i32 1107296256, ptr %block.flags, align 8
85 %block.reserved = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 2
86 store i32 0, ptr %block.reserved, align 4
87 %block.invoke = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 3
88 store ptr @__main_block_invoke_0, ptr %block.invoke, align 8
89 %block.descriptor = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 4
90 store ptr null, ptr %block.descriptor, align 8
91 %block.captured = getelementptr inbounds <{ ptr, i32, i32, ptr, ptr, ptr }>, ptr %block, i64 0, i32 5
92 store ptr %weakLogNTimes, ptr %block.captured, align 8
93 %tmp7 = call ptr @llvm.objc.retainBlock(ptr %block) nounwind, !clang.arc.copy_on_escape !0
94 %tmp8 = load ptr, ptr %byref.forwarding, align 8
95 %weakLogNTimes3 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, ptr %tmp8, i64 0, i32 6
96 %tmp10 = call ptr @not_really_objc_storeWeak(ptr %weakLogNTimes3, ptr %tmp7) nounwind
97 %tmp11 = getelementptr inbounds i8, ptr %tmp7, i64 16
98 %tmp13 = load ptr, ptr %tmp11, align 8
99 call void %tmp13(ptr %tmp7, i32 10) nounwind, !clang.arc.no_objc_arc_exceptions !0
100 call void @llvm.objc.release(ptr %tmp7) nounwind, !clang.imprecise_release !0
101 call void @_Block_object_dispose(ptr %weakLogNTimes, i32 8) nounwind
102 call void @llvm.objc.destroyWeak(ptr %weakLogNTimes1) nounwind
106 declare void @__Block_byref_object_copy_(ptr, ptr) nounwind
107 declare void @__Block_byref_object_dispose_(ptr) nounwind
108 declare void @llvm.objc.destroyWeak(ptr)
109 declare ptr @llvm.objc.initWeak(ptr, ptr)
110 declare void @__main_block_invoke_0(ptr nocapture, i32) nounwind ssp
111 declare void @_Block_object_dispose(ptr, i32)
112 declare ptr @llvm.objc.retainBlock(ptr)
113 declare ptr @llvm.objc.storeWeak(ptr, ptr)
114 declare ptr @not_really_objc_storeWeak(ptr, ptr)
115 declare void @llvm.objc.release(ptr)
119 ; CHECK: attributes [[NUW]] = { nounwind }
120 ; CHECK: attributes #1 = { nounwind ssp }