1 // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
2 // RUN: %clang_cc1 -O1 -triple x86_64-none-linux-gnu -emit-llvm -debug-info-kind=line-tables-only %s -o - | FileCheck %s --check-prefix=CHECK-LIFETIME
3
4 // We shouldn't have markers at -O0 or with msan.
5 // RUN: %clang_cc1 -O0 -triple x86_64-none-linux-gnu -emit-llvm -debug-info-kind=line-tables-only %s -o - | FileCheck %s --check-prefix=CHECK-OPTNONE
6 // RUN: %clang_cc1 -O1 -triple x86_64-none-linux-gnu -emit-llvm -debug-info-kind=line-tables-only %s -o - -fsanitize=memory | FileCheck %s --check-prefix=CHECK-MSAN
7 // RUN: %clang_cc1 -O1 -triple x86_64-none-linux-gnu -emit-llvm -debug-info-kind=line-tables-only %s -o - -fsanitize=kernel-memory | FileCheck %s --check-prefix=CHECK-KMSAN
8
9 // There is no exception to handle here, lifetime.end is not a destructor,
10 // so there is no need have cleanup dest slot related code
11
12 // CHECK-LIFETIME-LABEL: @test(
13 // CHECK-LIFETIME-NEXT: entry:
14 // CHECK-LIFETIME-NEXT: [[X:%.*]] = alloca i32, align 4
15 // CHECK-LIFETIME-NEXT: [[P:%.*]] = alloca ptr, align 8
16 // CHECK-LIFETIME-NEXT: call void @llvm.lifetime.start.p0(i64 4, ptr nonnull [[X]]) #[[ATTR2:[0-9]+]], !dbg [[DBG9:![0-9]+]]
17 // CHECK-LIFETIME-NEXT: store i32 3, ptr [[X]], align 4, !dbg [[DBG10:![0-9]+]], !tbaa [[TBAA11:![0-9]+]]
18 // CHECK-LIFETIME-NEXT: call void @llvm.lifetime.start.p0(i64 8, ptr nonnull [[P]]), !dbg [[DBG15:![0-9]+]]
19 // CHECK-LIFETIME-NEXT: store volatile ptr [[X]], ptr [[P]], align 8, !dbg [[DBG16:![0-9]+]], !tbaa [[TBAA17:![0-9]+]]
20 // CHECK-LIFETIME-NEXT: [[P_0_P_0_P_0_P_0_:%.*]] = load volatile ptr, ptr [[P]], align 8, !dbg [[DBG19:![0-9]+]], !tbaa [[TBAA17]]
21 // CHECK-LIFETIME-NEXT: [[TMP0:%.*]] = load i32, ptr [[P_0_P_0_P_0_P_0_]], align 4, !dbg [[DBG20:![0-9]+]], !tbaa [[TBAA11]]
22 // CHECK-LIFETIME-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr nonnull [[P]]), !dbg [[DBG21:![0-9]+]]
23 // CHECK-LIFETIME-NEXT: call void @llvm.lifetime.end.p0(i64 4, ptr nonnull [[X]]) #[[ATTR2]], !dbg [[DBG21]]
24 // CHECK-LIFETIME-NEXT: ret i32 [[TMP0]], !dbg [[DBG22:![0-9]+]]
25 //
26 // CHECK-OPTNONE-LABEL: @test(
27 // CHECK-OPTNONE-NEXT: entry:
28 // CHECK-OPTNONE-NEXT: [[X:%.*]] = alloca i32, align 4
29 // CHECK-OPTNONE-NEXT: [[P:%.*]] = alloca ptr, align 8
30 // CHECK-OPTNONE-NEXT: store i32 3, ptr [[X]], align 4, !dbg [[DBG9:![0-9]+]]
31 // CHECK-OPTNONE-NEXT: store volatile ptr [[X]], ptr [[P]], align 8, !dbg [[DBG10:![0-9]+]]
32 // CHECK-OPTNONE-NEXT: [[TMP0:%.*]] = load volatile ptr, ptr [[P]], align 8, !dbg [[DBG11:![0-9]+]]
33 // CHECK-OPTNONE-NEXT: [[TMP1:%.*]] = load i32, ptr [[TMP0]], align 4, !dbg [[DBG12:![0-9]+]]
34 // CHECK-OPTNONE-NEXT: ret i32 [[TMP1]], !dbg [[DBG13:![0-9]+]]
35 //
36 // CHECK-MSAN-LABEL: @test(
37 // CHECK-MSAN-NEXT: entry:
38 // CHECK-MSAN-NEXT: [[X:%.*]] = alloca i32, align 4
39 // CHECK-MSAN-NEXT: [[P:%.*]] = alloca ptr, align 8
40 // CHECK-MSAN-NEXT: call void @llvm.lifetime.start.p0(i64 4, ptr nonnull [[X]]) #[[ATTR2:[0-9]+]], !dbg [[DBG9:![0-9]+]]
41 // CHECK-MSAN-NEXT: [[TMP0:%.*]] = ptrtoint ptr [[X]] to i64, !dbg [[DBG9]]
42 // CHECK-MSAN-NEXT: [[TMP1:%.*]] = xor i64 [[TMP0]], 87960930222080, !dbg [[DBG9]]
43 // CHECK-MSAN-NEXT: [[TMP2:%.*]] = inttoptr i64 [[TMP1]] to ptr, !dbg [[DBG9]]
44 // CHECK-MSAN-NEXT: store i32 0, ptr [[TMP2]], align 4, !dbg [[DBG10:![0-9]+]]
45 // CHECK-MSAN-NEXT: store i32 3, ptr [[X]], align 4, !dbg [[DBG10]], !tbaa [[TBAA11:![0-9]+]]
46 // CHECK-MSAN-NEXT: call void @llvm.lifetime.start.p0(i64 8, ptr nonnull [[P]]), !dbg [[DBG15:![0-9]+]]
47 // CHECK-MSAN-NEXT: [[TMP3:%.*]] = ptrtoint ptr [[P]] to i64, !dbg [[DBG15]]
48 // CHECK-MSAN-NEXT: [[TMP4:%.*]] = xor i64 [[TMP3]], 87960930222080, !dbg [[DBG15]]
49 // CHECK-MSAN-NEXT: [[TMP5:%.*]] = inttoptr i64 [[TMP4]] to ptr, !dbg [[DBG15]]
50 // CHECK-MSAN-NEXT: store i64 0, ptr [[TMP5]], align 8, !dbg [[DBG16:![0-9]+]]
51 // CHECK-MSAN-NEXT: store volatile ptr [[X]], ptr [[P]], align 8, !dbg [[DBG16]], !tbaa [[TBAA17:![0-9]+]]
52 // CHECK-MSAN-NEXT: [[P_0_P_0_P_0_P_0_:%.*]] = load volatile ptr, ptr [[P]], align 8, !dbg [[DBG19:![0-9]+]], !tbaa [[TBAA17]]
53 // CHECK-MSAN-NEXT: [[_MSLD:%.*]] = load i64, ptr [[TMP5]], align 8, !dbg [[DBG19]]
54 // CHECK-MSAN-NEXT: [[_MSCMP_NOT:%.*]] = icmp eq i64 [[_MSLD]], 0, !dbg [[DBG20:![0-9]+]]
55 // CHECK-MSAN-NEXT: br i1 [[_MSCMP_NOT]], label [[TMP7:%.*]], label [[TMP6:%.*]], !dbg [[DBG20]], !prof [[PROF21:![0-9]+]]
56 // CHECK-MSAN: 6:
57 // CHECK-MSAN-NEXT: call void @__msan_warning_noreturn() #[[ATTR3:[0-9]+]], !dbg [[DBG20]]
58 // CHECK-MSAN-NEXT: unreachable, !dbg [[DBG20]]
59 // CHECK-MSAN: 7:
60 // CHECK-MSAN-NEXT: [[TMP8:%.*]] = load i32, ptr [[P_0_P_0_P_0_P_0_]], align 4, !dbg [[DBG20]], !tbaa [[TBAA11]]
61 // CHECK-MSAN-NEXT: [[TMP9:%.*]] = ptrtoint ptr [[P_0_P_0_P_0_P_0_]] to i64, !dbg [[DBG20]]
62 // CHECK-MSAN-NEXT: [[TMP10:%.*]] = xor i64 [[TMP9]], 87960930222080, !dbg [[DBG20]]
63 // CHECK-MSAN-NEXT: [[TMP11:%.*]] = inttoptr i64 [[TMP10]] to ptr, !dbg [[DBG20]]
64 // CHECK-MSAN-NEXT: [[_MSLD1:%.*]] = load i32, ptr [[TMP11]], align 4, !dbg [[DBG20]]
65 // CHECK-MSAN-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr nonnull [[P]]), !dbg [[DBG22:![0-9]+]]
66 // CHECK-MSAN-NEXT: call void @llvm.lifetime.end.p0(i64 4, ptr nonnull [[X]]) #[[ATTR2]], !dbg [[DBG22]]
67 // CHECK-MSAN-NEXT: [[_MSCMP2_NOT:%.*]] = icmp eq i32 [[_MSLD1]], 0, !dbg [[DBG23:![0-9]+]]
68 // CHECK-MSAN-NEXT: br i1 [[_MSCMP2_NOT]], label [[TMP13:%.*]], label [[TMP12:%.*]], !dbg [[DBG23]], !prof [[PROF21]]
69 // CHECK-MSAN: 12:
70 // CHECK-MSAN-NEXT: call void @__msan_warning_noreturn() #[[ATTR3]], !dbg [[DBG23]]
71 // CHECK-MSAN-NEXT: unreachable, !dbg [[DBG23]]
72 // CHECK-MSAN: 13:
73 // CHECK-MSAN-NEXT: ret i32 [[TMP8]], !dbg [[DBG23]]
74 //
75 // CHECK-KMSAN-LABEL: @test(
76 // CHECK-KMSAN-NEXT: entry:
77 // CHECK-KMSAN-NEXT: [[TMP0:%.*]] = call ptr @__msan_get_context_state() #[[ATTR2:[0-9]+]]
78 // CHECK-KMSAN-NEXT: [[X:%.*]] = alloca i32, align 4
79 // CHECK-KMSAN-NEXT: [[P:%.*]] = alloca ptr, align 8
80 // CHECK-KMSAN-NEXT: call void @llvm.lifetime.start.p0(i64 4, ptr nonnull [[X]]) #[[ATTR2]], !dbg [[DBG9:![0-9]+]]
81 // CHECK-KMSAN-NEXT: call void @__msan_poison_alloca(ptr nonnull [[X]], i64 4, ptr nonnull @[[GLOB0:[0-9]+]]) #[[ATTR2]], !dbg [[DBG9]]
82 // CHECK-KMSAN-NEXT: [[TMP1:%.*]] = call { ptr, ptr } @__msan_metadata_ptr_for_store_4(ptr nonnull [[X]]) #[[ATTR2]], !dbg [[DBG10:![0-9]+]]
83 // CHECK-KMSAN-NEXT: [[TMP2:%.*]] = extractvalue { ptr, ptr } [[TMP1]], 0, !dbg [[DBG10]]
84 // CHECK-KMSAN-NEXT: store i32 0, ptr [[TMP2]], align 4, !dbg [[DBG10]]
85 // CHECK-KMSAN-NEXT: store i32 3, ptr [[X]], align 4, !dbg [[DBG10]], !tbaa [[TBAA11:![0-9]+]]
86 // CHECK-KMSAN-NEXT: call void @llvm.lifetime.start.p0(i64 8, ptr nonnull [[P]]), !dbg [[DBG15:![0-9]+]]
87 // CHECK-KMSAN-NEXT: call void @__msan_poison_alloca(ptr nonnull [[P]], i64 8, ptr nonnull @[[GLOB1:[0-9]+]]) #[[ATTR2]], !dbg [[DBG15]]
88 // CHECK-KMSAN-NEXT: [[TMP3:%.*]] = call { ptr, ptr } @__msan_metadata_ptr_for_store_8(ptr nonnull [[P]]) #[[ATTR2]], !dbg [[DBG16:![0-9]+]]
89 // CHECK-KMSAN-NEXT: [[TMP4:%.*]] = extractvalue { ptr, ptr } [[TMP3]], 0, !dbg [[DBG16]]
90 // CHECK-KMSAN-NEXT: store i64 0, ptr [[TMP4]], align 8, !dbg [[DBG16]]
91 // CHECK-KMSAN-NEXT: store volatile ptr [[X]], ptr [[P]], align 8, !dbg [[DBG16]], !tbaa [[TBAA17:![0-9]+]]
92 // CHECK-KMSAN-NEXT: [[P_0_P_0_P_0_P_0_:%.*]] = load volatile ptr, ptr [[P]], align 8, !dbg [[DBG19:![0-9]+]], !tbaa [[TBAA17]]
93 // CHECK-KMSAN-NEXT: [[TMP5:%.*]] = call { ptr, ptr } @__msan_metadata_ptr_for_load_8(ptr nonnull [[P]]) #[[ATTR2]], !dbg [[DBG19]]
94 // CHECK-KMSAN-NEXT: [[TMP6:%.*]] = extractvalue { ptr, ptr } [[TMP5]], 0, !dbg [[DBG19]]
95 // CHECK-KMSAN-NEXT: [[_MSLD:%.*]] = load i64, ptr [[TMP6]], align 8, !dbg [[DBG19]]
96 // CHECK-KMSAN-NEXT: [[_MSCMP_NOT:%.*]] = icmp eq i64 [[_MSLD]], 0, !dbg [[DBG20:![0-9]+]]
97 // CHECK-KMSAN-NEXT: br i1 [[_MSCMP_NOT]], label [[TMP10:%.*]], label [[TMP7:%.*]], !dbg [[DBG20]], !prof [[PROF21:![0-9]+]]
98 // CHECK-KMSAN: 7:
99 // CHECK-KMSAN-NEXT: [[TMP8:%.*]] = extractvalue { ptr, ptr } [[TMP5]], 1, !dbg [[DBG19]]
100 // CHECK-KMSAN-NEXT: [[TMP9:%.*]] = load i32, ptr [[TMP8]], align 8, !dbg [[DBG19]]
101 // CHECK-KMSAN-NEXT: call void @__msan_warning(i32 [[TMP9]]) #[[ATTR3:[0-9]+]], !dbg [[DBG20]]
102 // CHECK-KMSAN-NEXT: br label [[TMP10]], !dbg [[DBG20]]
103 // CHECK-KMSAN: 10:
104 // CHECK-KMSAN-NEXT: [[RETVAL_ORIGIN:%.*]] = getelementptr i8, ptr [[TMP0]], i64 4008
105 // CHECK-KMSAN-NEXT: [[RETVAL_SHADOW:%.*]] = getelementptr i8, ptr [[TMP0]], i64 800
106 // CHECK-KMSAN-NEXT: [[TMP11:%.*]] = load i32, ptr [[P_0_P_0_P_0_P_0_]], align 4, !dbg [[DBG20]], !tbaa [[TBAA11]]
107 // CHECK-KMSAN-NEXT: [[TMP12:%.*]] = call { ptr, ptr } @__msan_metadata_ptr_for_load_4(ptr nonnull [[P_0_P_0_P_0_P_0_]]) #[[ATTR2]], !dbg [[DBG20]]
108 // CHECK-KMSAN-NEXT: [[TMP13:%.*]] = extractvalue { ptr, ptr } [[TMP12]], 0, !dbg [[DBG20]]
109 // CHECK-KMSAN-NEXT: [[TMP14:%.*]] = extractvalue { ptr, ptr } [[TMP12]], 1, !dbg [[DBG20]]
110 // CHECK-KMSAN-NEXT: [[_MSLD1:%.*]] = load i32, ptr [[TMP13]], align 4, !dbg [[DBG20]]
111 // CHECK-KMSAN-NEXT: [[TMP15:%.*]] = load i32, ptr [[TMP14]], align 4, !dbg [[DBG20]]
112 // CHECK-KMSAN-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr nonnull [[P]]), !dbg [[DBG22:![0-9]+]]
113 // CHECK-KMSAN-NEXT: call void @llvm.lifetime.end.p0(i64 4, ptr nonnull [[X]]) #[[ATTR2]], !dbg [[DBG22]]
114 // CHECK-KMSAN-NEXT: store i32 [[_MSLD1]], ptr [[RETVAL_SHADOW]], align 8, !dbg [[DBG23:![0-9]+]]
115 // CHECK-KMSAN-NEXT: store i32 [[TMP15]], ptr [[RETVAL_ORIGIN]], align 4, !dbg [[DBG23]]
116 // CHECK-KMSAN-NEXT: ret i32 [[TMP11]], !dbg [[DBG23]]
117 //
test(void)118 int test(void) {
119 int x = 3;
120 int *volatile p = &x;
121 return *p;
122 }
123