1 ; RUN: opt -basicaa -objc-arc -S < %s | FileCheck %s
3 target datalayout = "e-p:64:64:64"
5 declare i8* @objc_retain(i8*)
6 declare i8* @objc_retainAutorelease(i8*)
7 declare void @objc_release(i8*)
8 declare i8* @objc_autorelease(i8*)
10 declare void @clang.arc.use(...)
12 declare void @test0_helper(i8*, i8**)
14 ; Ensure that we honor clang.arc.use as a use and don't miscompile
15 ; the reduced test case from <rdar://13195034>.
17 ; FIXME: the fact that we re-order retains w.r.t. @clang.arc.use could
18 ; be problematic if we get run twice, e.g. under LTO.
20 ; CHECK: define void @test0(
21 ; CHECK: @objc_retain(i8* %x)
22 ; CHECK-NEXT: store i8* %y, i8** %temp0
23 ; CHECK-NEXT: @objc_retain(i8* %y)
24 ; CHECK-NEXT: call void @test0_helper
25 ; CHECK-NEXT: [[VAL1:%.*]] = load i8** %temp0
26 ; CHECK-NEXT: call void (...)* @clang.arc.use(i8* %y)
27 ; CHECK-NEXT: @objc_retain(i8* [[VAL1]])
28 ; CHECK-NEXT: @objc_release(i8* %y)
29 ; CHECK-NEXT: store i8* [[VAL1]], i8** %temp1
30 ; CHECK-NEXT: call void @test0_helper
31 ; CHECK-NEXT: [[VAL2:%.*]] = load i8** %temp1
32 ; CHECK-NEXT: call void (...)* @clang.arc.use(i8* [[VAL1]])
33 ; CHECK-NEXT: @objc_retain(i8* [[VAL2]])
34 ; CHECK-NEXT: @objc_release(i8* [[VAL1]])
35 ; CHECK-NEXT: @objc_autorelease(i8* %x)
36 ; CHECK-NEXT: store i8* %x, i8** %out
37 ; CHECK-NEXT: @objc_retain(i8* %x)
38 ; CHECK-NEXT: @objc_release(i8* [[VAL2]])
39 ; CHECK-NEXT: @objc_release(i8* %x)
40 ; CHECK-NEXT: ret void
41 define void @test0(i8** %out, i8* %x, i8* %y) {
43 %temp0 = alloca i8*, align 8
44 %temp1 = alloca i8*, align 8
45 %0 = call i8* @objc_retain(i8* %x) nounwind
46 %1 = call i8* @objc_retain(i8* %y) nounwind
47 store i8* %y, i8** %temp0
48 call void @test0_helper(i8* %x, i8** %temp0)
49 %val1 = load i8** %temp0
50 %2 = call i8* @objc_retain(i8* %val1) nounwind
51 call void (...)* @clang.arc.use(i8* %y) nounwind
52 call void @objc_release(i8* %y) nounwind
53 store i8* %val1, i8** %temp1
54 call void @test0_helper(i8* %x, i8** %temp1)
55 %val2 = load i8** %temp1
56 %3 = call i8* @objc_retain(i8* %val2) nounwind
57 call void (...)* @clang.arc.use(i8* %val1) nounwind
58 call void @objc_release(i8* %val1) nounwind
59 %4 = call i8* @objc_retain(i8* %x) nounwind
60 %5 = call i8* @objc_autorelease(i8* %x) nounwind
61 store i8* %x, i8** %out
62 call void @objc_release(i8* %val2) nounwind
63 call void @objc_release(i8* %x) nounwind
67 ; CHECK: define void @test0a(
68 ; CHECK: @objc_retain(i8* %x)
69 ; CHECK-NEXT: store i8* %y, i8** %temp0
70 ; CHECK-NEXT: @objc_retain(i8* %y)
71 ; CHECK-NEXT: call void @test0_helper
72 ; CHECK-NEXT: [[VAL1:%.*]] = load i8** %temp0
73 ; CHECK-NEXT: call void (...)* @clang.arc.use(i8* %y)
74 ; CHECK-NEXT: @objc_retain(i8* [[VAL1]])
75 ; CHECK-NEXT: @objc_release(i8* %y)
76 ; CHECK-NEXT: store i8* [[VAL1]], i8** %temp1
77 ; CHECK-NEXT: call void @test0_helper
78 ; CHECK-NEXT: [[VAL2:%.*]] = load i8** %temp1
79 ; CHECK-NEXT: call void (...)* @clang.arc.use(i8* [[VAL1]])
80 ; CHECK-NEXT: @objc_retain(i8* [[VAL2]])
81 ; CHECK-NEXT: @objc_release(i8* [[VAL1]])
82 ; CHECK-NEXT: @objc_autorelease(i8* %x)
83 ; CHECK-NEXT: @objc_release(i8* [[VAL2]])
84 ; CHECK-NEXT: store i8* %x, i8** %out
85 ; CHECK-NEXT: ret void
86 define void @test0a(i8** %out, i8* %x, i8* %y) {
88 %temp0 = alloca i8*, align 8
89 %temp1 = alloca i8*, align 8
90 %0 = call i8* @objc_retain(i8* %x) nounwind
91 %1 = call i8* @objc_retain(i8* %y) nounwind
92 store i8* %y, i8** %temp0
93 call void @test0_helper(i8* %x, i8** %temp0)
94 %val1 = load i8** %temp0
95 %2 = call i8* @objc_retain(i8* %val1) nounwind
96 call void (...)* @clang.arc.use(i8* %y) nounwind
97 call void @objc_release(i8* %y) nounwind, !clang.imprecise_release !0
98 store i8* %val1, i8** %temp1
99 call void @test0_helper(i8* %x, i8** %temp1)
100 %val2 = load i8** %temp1
101 %3 = call i8* @objc_retain(i8* %val2) nounwind
102 call void (...)* @clang.arc.use(i8* %val1) nounwind
103 call void @objc_release(i8* %val1) nounwind, !clang.imprecise_release !0
104 %4 = call i8* @objc_retain(i8* %x) nounwind
105 %5 = call i8* @objc_autorelease(i8* %x) nounwind
106 store i8* %x, i8** %out
107 call void @objc_release(i8* %val2) nounwind, !clang.imprecise_release !0
108 call void @objc_release(i8* %x) nounwind, !clang.imprecise_release !0