1 ; RUN: opt -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 { i8*, %struct.__block_byref_weakLogNTimes*, i32, i32, i8*, i8*, void (...)* }
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 i8* @llvm.objc.retainBlock(i8* %tmp6) [[NUW:#[0-9]+]], !clang.arc.copy_on_escape !0
14 ; CHECK: call void @llvm.objc.release(i8* %tmp7) [[NUW]], !clang.imprecise_release !0
16 define void @test0() nounwind {
18 %weakLogNTimes = alloca %struct.__block_byref_weakLogNTimes, align 8
19 %block = alloca <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>, align 8
20 %byref.isa = getelementptr inbounds %struct.__block_byref_weakLogNTimes, %struct.__block_byref_weakLogNTimes* %weakLogNTimes, i64 0, i32 0
21 store i8* null, i8** %byref.isa, align 8
22 %byref.forwarding = getelementptr inbounds %struct.__block_byref_weakLogNTimes, %struct.__block_byref_weakLogNTimes* %weakLogNTimes, i64 0, i32 1
23 store %struct.__block_byref_weakLogNTimes* %weakLogNTimes, %struct.__block_byref_weakLogNTimes** %byref.forwarding, align 8
24 %byref.flags = getelementptr inbounds %struct.__block_byref_weakLogNTimes, %struct.__block_byref_weakLogNTimes* %weakLogNTimes, i64 0, i32 2
25 store i32 33554432, i32* %byref.flags, align 8
26 %byref.size = getelementptr inbounds %struct.__block_byref_weakLogNTimes, %struct.__block_byref_weakLogNTimes* %weakLogNTimes, i64 0, i32 3
27 store i32 48, i32* %byref.size, align 4
28 %tmp1 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, %struct.__block_byref_weakLogNTimes* %weakLogNTimes, i64 0, i32 4
29 store i8* bitcast (void (i8*, i8*)* @__Block_byref_object_copy_ to i8*), i8** %tmp1, align 8
30 %tmp2 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, %struct.__block_byref_weakLogNTimes* %weakLogNTimes, i64 0, i32 5
31 store i8* bitcast (void (i8*)* @__Block_byref_object_dispose_ to i8*), i8** %tmp2, align 8
32 %weakLogNTimes1 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, %struct.__block_byref_weakLogNTimes* %weakLogNTimes, i64 0, i32 6
33 %tmp3 = bitcast void (...)** %weakLogNTimes1 to i8**
34 %tmp4 = call i8* @llvm.objc.initWeak(i8** %tmp3, i8* null) nounwind
35 %block.isa = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 0
36 store i8* null, i8** %block.isa, align 8
37 %block.flags = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 1
38 store i32 1107296256, i32* %block.flags, align 8
39 %block.reserved = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 2
40 store i32 0, i32* %block.reserved, align 4
41 %block.invoke = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 3
42 store i8* bitcast (void (i8*, i32)* @__main_block_invoke_0 to i8*), i8** %block.invoke, align 8
43 %block.descriptor = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 4
44 store %struct.__block_descriptor* null, %struct.__block_descriptor** %block.descriptor, align 8
45 %block.captured = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 5
46 %tmp5 = bitcast %struct.__block_byref_weakLogNTimes* %weakLogNTimes to i8*
47 store i8* %tmp5, i8** %block.captured, align 8
48 %tmp6 = bitcast <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block to i8*
49 %tmp7 = call i8* @llvm.objc.retainBlock(i8* %tmp6) nounwind, !clang.arc.copy_on_escape !0
50 %tmp8 = load %struct.__block_byref_weakLogNTimes*, %struct.__block_byref_weakLogNTimes** %byref.forwarding, align 8
51 %weakLogNTimes3 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, %struct.__block_byref_weakLogNTimes* %tmp8, i64 0, i32 6
52 %tmp9 = bitcast void (...)** %weakLogNTimes3 to i8**
53 %tmp10 = call i8* @llvm.objc.storeWeak(i8** %tmp9, i8* %tmp7) nounwind
54 %tmp11 = getelementptr inbounds i8, i8* %tmp7, i64 16
55 %tmp12 = bitcast i8* %tmp11 to i8**
56 %tmp13 = load i8*, i8** %tmp12, align 8
57 %tmp14 = bitcast i8* %tmp13 to void (i8*, i32)*
58 call void %tmp14(i8* %tmp7, i32 10) nounwind, !clang.arc.no_objc_arc_exceptions !0
59 call void @llvm.objc.release(i8* %tmp7) nounwind, !clang.imprecise_release !0
60 call void @_Block_object_dispose(i8* %tmp5, i32 8) nounwind
61 call void @llvm.objc.destroyWeak(i8** %tmp3) nounwind
65 ; Like test0, but it makes a regular call instead of a storeWeak call,
66 ; so the optimization is valid.
68 ; CHECK-LABEL: define void @test1(
69 ; CHECK-NOT: @llvm.objc.retainBlock
71 define void @test1() nounwind {
73 %weakLogNTimes = alloca %struct.__block_byref_weakLogNTimes, align 8
74 %block = alloca <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>, align 8
75 %byref.isa = getelementptr inbounds %struct.__block_byref_weakLogNTimes, %struct.__block_byref_weakLogNTimes* %weakLogNTimes, i64 0, i32 0
76 store i8* null, i8** %byref.isa, align 8
77 %byref.forwarding = getelementptr inbounds %struct.__block_byref_weakLogNTimes, %struct.__block_byref_weakLogNTimes* %weakLogNTimes, i64 0, i32 1
78 store %struct.__block_byref_weakLogNTimes* %weakLogNTimes, %struct.__block_byref_weakLogNTimes** %byref.forwarding, align 8
79 %byref.flags = getelementptr inbounds %struct.__block_byref_weakLogNTimes, %struct.__block_byref_weakLogNTimes* %weakLogNTimes, i64 0, i32 2
80 store i32 33554432, i32* %byref.flags, align 8
81 %byref.size = getelementptr inbounds %struct.__block_byref_weakLogNTimes, %struct.__block_byref_weakLogNTimes* %weakLogNTimes, i64 0, i32 3
82 store i32 48, i32* %byref.size, align 4
83 %tmp1 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, %struct.__block_byref_weakLogNTimes* %weakLogNTimes, i64 0, i32 4
84 store i8* bitcast (void (i8*, i8*)* @__Block_byref_object_copy_ to i8*), i8** %tmp1, align 8
85 %tmp2 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, %struct.__block_byref_weakLogNTimes* %weakLogNTimes, i64 0, i32 5
86 store i8* bitcast (void (i8*)* @__Block_byref_object_dispose_ to i8*), i8** %tmp2, align 8
87 %weakLogNTimes1 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, %struct.__block_byref_weakLogNTimes* %weakLogNTimes, i64 0, i32 6
88 %tmp3 = bitcast void (...)** %weakLogNTimes1 to i8**
89 %tmp4 = call i8* @llvm.objc.initWeak(i8** %tmp3, i8* null) nounwind
90 %block.isa = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 0
91 store i8* null, i8** %block.isa, align 8
92 %block.flags = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 1
93 store i32 1107296256, i32* %block.flags, align 8
94 %block.reserved = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 2
95 store i32 0, i32* %block.reserved, align 4
96 %block.invoke = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 3
97 store i8* bitcast (void (i8*, i32)* @__main_block_invoke_0 to i8*), i8** %block.invoke, align 8
98 %block.descriptor = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 4
99 store %struct.__block_descriptor* null, %struct.__block_descriptor** %block.descriptor, align 8
100 %block.captured = getelementptr inbounds <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>, <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block, i64 0, i32 5
101 %tmp5 = bitcast %struct.__block_byref_weakLogNTimes* %weakLogNTimes to i8*
102 store i8* %tmp5, i8** %block.captured, align 8
103 %tmp6 = bitcast <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, i8* }>* %block to i8*
104 %tmp7 = call i8* @llvm.objc.retainBlock(i8* %tmp6) nounwind, !clang.arc.copy_on_escape !0
105 %tmp8 = load %struct.__block_byref_weakLogNTimes*, %struct.__block_byref_weakLogNTimes** %byref.forwarding, align 8
106 %weakLogNTimes3 = getelementptr inbounds %struct.__block_byref_weakLogNTimes, %struct.__block_byref_weakLogNTimes* %tmp8, i64 0, i32 6
107 %tmp9 = bitcast void (...)** %weakLogNTimes3 to i8**
108 %tmp10 = call i8* @not_really_objc_storeWeak(i8** %tmp9, i8* %tmp7) nounwind
109 %tmp11 = getelementptr inbounds i8, i8* %tmp7, i64 16
110 %tmp12 = bitcast i8* %tmp11 to i8**
111 %tmp13 = load i8*, i8** %tmp12, align 8
112 %tmp14 = bitcast i8* %tmp13 to void (i8*, i32)*
113 call void %tmp14(i8* %tmp7, i32 10) nounwind, !clang.arc.no_objc_arc_exceptions !0
114 call void @llvm.objc.release(i8* %tmp7) nounwind, !clang.imprecise_release !0
115 call void @_Block_object_dispose(i8* %tmp5, i32 8) nounwind
116 call void @llvm.objc.destroyWeak(i8** %tmp3) nounwind
120 declare void @__Block_byref_object_copy_(i8*, i8*) nounwind
121 declare void @__Block_byref_object_dispose_(i8*) nounwind
122 declare void @llvm.objc.destroyWeak(i8**)
123 declare i8* @llvm.objc.initWeak(i8**, i8*)
124 declare void @__main_block_invoke_0(i8* nocapture, i32) nounwind ssp
125 declare void @_Block_object_dispose(i8*, i32)
126 declare i8* @llvm.objc.retainBlock(i8*)
127 declare i8* @llvm.objc.storeWeak(i8**, i8*)
128 declare i8* @not_really_objc_storeWeak(i8**, i8*)
129 declare void @llvm.objc.release(i8*)
133 ; CHECK: attributes [[NUW]] = { nounwind }
134 ; CHECK: attributes #1 = { nounwind ssp }