1 // RUN: %clang_cc1 -x c -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefixes=CHECK,CHECK-NOSANITIZE
2 // RUN: %clang_cc1 -x c -fsanitize=pointer-overflow -fno-sanitize-recover=pointer-overflow -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_pointer_overflow" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-C,CHECK-SANITIZE-ANYRECOVER,CHECK-SANITIZE-NORECOVER,CHECK-SANITIZE-UNREACHABLE
3 // RUN: %clang_cc1 -x c -fsanitize=pointer-overflow -fsanitize-recover=pointer-overflow -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_pointer_overflow" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-C,CHECK-SANITIZE-ANYRECOVER,CHECK-SANITIZE-RECOVER
4 // RUN: %clang_cc1 -x c -fsanitize=pointer-overflow -fsanitize-trap=pointer-overflow -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_pointer_overflow" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-C,CHECK-SANITIZE-TRAP,CHECK-SANITIZE-UNREACHABLE
5
6 // RUN: %clang_cc1 -x c++ -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefixes=CHECK,CHECK-NOSANITIZE
7 // RUN: %clang_cc1 -x c++ -fsanitize=pointer-overflow -fno-sanitize-recover=pointer-overflow -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_pointer_overflow" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-CPP,CHECK-SANITIZE-ANYRECOVER,CHECK-SANITIZE-NORECOVER,CHECK-SANITIZE-UNREACHABLE
8 // RUN: %clang_cc1 -x c++ -fsanitize=pointer-overflow -fsanitize-recover=pointer-overflow -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_pointer_overflow" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-CPP,CHECK-SANITIZE-ANYRECOVER,CHECK-SANITIZE-RECOVER
9 // RUN: %clang_cc1 -x c++ -fsanitize=pointer-overflow -fsanitize-trap=pointer-overflow -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_pointer_overflow" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-CPP,CHECK-SANITIZE-TRAP,CHECK-SANITIZE-UNREACHABLE
10
11 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_100:.*]] = {{.*}}, i32 100, i32 15 } }
12 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_200:.*]] = {{.*}}, i32 200, i32 15 } }
13 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_300:.*]] = {{.*}}, i32 300, i32 15 } }
14 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_400:.*]] = {{.*}}, i32 400, i32 15 } }
15 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_500:.*]] = {{.*}}, i32 500, i32 7 } }
16 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_600:.*]] = {{.*}}, i32 600, i32 7 } }
17 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_700:.*]] = {{.*}}, i32 700, i32 3 } }
18 // CHECK-SANITIZE-ANYRECOVER-DAG: @[[LINE_800:.*]] = {{.*}}, i32 800, i32 3 } }
19
20 #ifdef __cplusplus
21 extern "C" {
22 #endif
23
add_unsigned(char * base,unsigned long offset)24 char *add_unsigned(char *base, unsigned long offset) {
25 // CHECK: define i8* @add_unsigned(i8* %[[BASE:.*]], i64 %[[OFFSET:.*]])
26 // CHECK-NEXT: [[ENTRY:.*]]:
27 // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca i8*, align 8
28 // CHECK-NEXT: %[[OFFSET_ADDR:.*]] = alloca i64, align 8
29 // CHECK-NEXT: store i8* %[[BASE]], i8** %[[BASE_ADDR]], align 8
30 // CHECK-NEXT: store i64 %[[OFFSET]], i64* %[[OFFSET_ADDR]], align 8
31 // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load i8*, i8** %[[BASE_ADDR]], align 8
32 // CHECK-NEXT: %[[OFFSET_RELOADED:.*]] = load i64, i64* %[[OFFSET_ADDR]], align 8
33 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, i8* %[[BASE_RELOADED]], i64 %[[OFFSET_RELOADED]]
34 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_AGGREGATE:.*]] = call { i64, i1 } @llvm.smul.with.overflow.i64(i64 1, i64 %[[OFFSET_RELOADED]]), !nosanitize
35 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_OVERFLOWED:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 1, !nosanitize
36 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 0, !nosanitize
37 // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint i8* %[[BASE_RELOADED]] to i64, !nosanitize
38 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], %[[COMPUTED_OFFSET]], !nosanitize
39 // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne i8* %[[BASE_RELOADED]], null, !nosanitize
40 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize
41 // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize
42 // CHECK-SANITIZE-CPP-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize
43 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW:.*]] = xor i1 %[[COMPUTED_OFFSET_OVERFLOWED]], true, !nosanitize
44 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize
45 // CHECK-SANITIZE-NEXT: %[[GEP_DID_NOT_OVERFLOW:.*]] = and i1 %[[COMPUTED_GEP_IS_UGE_BASE]], %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW]], !nosanitize
46 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[GEP_DID_NOT_OVERFLOW]], !nosanitize
47 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize
48 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]:
49 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_100]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]])
50 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_100]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]])
51 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.trap(){{.*}}, !nosanitize
52 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize
53 // CHECK-SANITIZE: [[CONT]]:
54 // CHECK-NEXT: ret i8* %[[ADD_PTR]]
55 #line 100
56 return base + offset;
57 }
58
sub_unsigned(char * base,unsigned long offset)59 char *sub_unsigned(char *base, unsigned long offset) {
60 // CHECK: define i8* @sub_unsigned(i8* %[[BASE:.*]], i64 %[[OFFSET:.*]])
61 // CHECK-NEXT: [[ENTRY:.*]]:
62 // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca i8*, align 8
63 // CHECK-NEXT: %[[OFFSET_ADDR:.*]] = alloca i64, align 8
64 // CHECK-NEXT: store i8* %[[BASE]], i8** %[[BASE_ADDR]], align 8
65 // CHECK-NEXT: store i64 %[[OFFSET]], i64* %[[OFFSET_ADDR]], align 8
66 // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load i8*, i8** %[[BASE_ADDR]], align 8
67 // CHECK-NEXT: %[[OFFSET_RELOADED:.*]] = load i64, i64* %[[OFFSET_ADDR]], align 8
68 // CHECK-NEXT: %[[IDX_NEG:.*]] = sub i64 0, %[[OFFSET_RELOADED]]
69 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, i8* %[[BASE_RELOADED]], i64 %[[IDX_NEG]]
70 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_AGGREGATE:.*]] = call { i64, i1 } @llvm.smul.with.overflow.i64(i64 1, i64 %[[IDX_NEG]]), !nosanitize
71 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_OVERFLOWED:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 1, !nosanitize
72 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 0, !nosanitize
73 // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint i8* %[[BASE_RELOADED]] to i64, !nosanitize
74 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], %[[COMPUTED_OFFSET]], !nosanitize
75 // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne i8* %[[BASE_RELOADED]], null, !nosanitize
76 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize
77 // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize
78 // CHECK-SANITIZE-CPP-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize
79 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW:.*]] = xor i1 %[[COMPUTED_OFFSET_OVERFLOWED]], true, !nosanitize
80 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_ULE_BASE:.*]] = icmp ule i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize
81 // CHECK-SANITIZE-NEXT: %[[GEP_DID_NOT_OVERFLOW:.*]] = and i1 %[[COMPUTED_GEP_IS_ULE_BASE]], %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW]], !nosanitize
82 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[GEP_DID_NOT_OVERFLOW]], !nosanitize
83 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize
84 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]:
85 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_200]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]])
86 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_200]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]])
87 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.trap(){{.*}}, !nosanitize
88 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize
89 // CHECK-SANITIZE: [[CONT]]:
90 // CHECK-NEXT: ret i8* %[[ADD_PTR]]
91 #line 200
92 return base - offset;
93 }
94
add_signed(char * base,signed long offset)95 char *add_signed(char *base, signed long offset) {
96 // CHECK: define i8* @add_signed(i8* %[[BASE:.*]], i64 %[[OFFSET:.*]])
97 // CHECK-NEXT: [[ENTRY:.*]]:
98 // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca i8*, align 8
99 // CHECK-NEXT: %[[OFFSET_ADDR:.*]] = alloca i64, align 8
100 // CHECK-NEXT: store i8* %[[BASE]], i8** %[[BASE_ADDR]], align 8
101 // CHECK-NEXT: store i64 %[[OFFSET]], i64* %[[OFFSET_ADDR]], align 8
102 // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load i8*, i8** %[[BASE_ADDR]], align 8
103 // CHECK-NEXT: %[[OFFSET_RELOADED:.*]] = load i64, i64* %[[OFFSET_ADDR]], align 8
104 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, i8* %[[BASE_RELOADED]], i64 %[[OFFSET_RELOADED]]
105 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_AGGREGATE:.*]] = call { i64, i1 } @llvm.smul.with.overflow.i64(i64 1, i64 %[[OFFSET_RELOADED]]), !nosanitize
106 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_OVERFLOWED:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 1, !nosanitize
107 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 0, !nosanitize
108 // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint i8* %[[BASE_RELOADED]] to i64, !nosanitize
109 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], %[[COMPUTED_OFFSET]], !nosanitize
110 // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne i8* %[[BASE_RELOADED]], null, !nosanitize
111 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize
112 // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize
113 // CHECK-SANITIZE-CPP-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize
114 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW:.*]] = xor i1 %[[COMPUTED_OFFSET_OVERFLOWED]], true, !nosanitize
115 // CHECK-SANITIZE-NEXT: %[[POSORZEROVALID:.*]] = icmp uge i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize
116 // CHECK-SANITIZE-NEXT: %[[POSORZEROOFFSET:.*]] = icmp sge i64 %[[COMPUTED_OFFSET]], 0, !nosanitize
117 // CHECK-SANITIZE-NEXT: %[[NEGVALID:.*]] = icmp ult i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize
118 // CHECK-SANITIZE-NEXT: %[[APPLYING_OFFSET_DID_NOT_OVERFLOW:.*]] = select i1 %[[POSORZEROOFFSET]], i1 %[[POSORZEROVALID]], i1 %[[NEGVALID]], !nosanitize
119 // CHECK-SANITIZE-NEXT: %[[GEP_DID_NOT_OVERFLOW:.*]] = and i1 %[[APPLYING_OFFSET_DID_NOT_OVERFLOW]], %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW]], !nosanitize
120 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[GEP_DID_NOT_OVERFLOW]], !nosanitize
121 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize
122 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]:
123 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_300]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]])
124 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_300]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]])
125 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.trap(){{.*}}, !nosanitize
126 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize
127 // CHECK-SANITIZE: [[CONT]]:
128 // CHECK-NEXT: ret i8* %[[ADD_PTR]]
129 #line 300
130 return base + offset;
131 }
132
sub_signed(char * base,signed long offset)133 char *sub_signed(char *base, signed long offset) {
134 // CHECK: define i8* @sub_signed(i8* %[[BASE:.*]], i64 %[[OFFSET:.*]])
135 // CHECK-NEXT: [[ENTRY:.*]]:
136 // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca i8*, align 8
137 // CHECK-NEXT: %[[OFFSET_ADDR:.*]] = alloca i64, align 8
138 // CHECK-NEXT: store i8* %[[BASE]], i8** %[[BASE_ADDR]], align 8
139 // CHECK-NEXT: store i64 %[[OFFSET]], i64* %[[OFFSET_ADDR]], align 8
140 // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load i8*, i8** %[[BASE_ADDR]], align 8
141 // CHECK-NEXT: %[[OFFSET_RELOADED:.*]] = load i64, i64* %[[OFFSET_ADDR]], align 8
142 // CHECK-NEXT: %[[IDX_NEG:.*]] = sub i64 0, %[[OFFSET_RELOADED]]
143 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, i8* %[[BASE_RELOADED]], i64 %[[IDX_NEG]]
144 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_AGGREGATE:.*]] = call { i64, i1 } @llvm.smul.with.overflow.i64(i64 1, i64 %[[IDX_NEG]]), !nosanitize
145 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_OVERFLOWED:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 1, !nosanitize
146 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET:.*]] = extractvalue { i64, i1 } %[[COMPUTED_OFFSET_AGGREGATE]], 0, !nosanitize
147 // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint i8* %[[BASE_RELOADED]] to i64, !nosanitize
148 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], %[[COMPUTED_OFFSET]], !nosanitize
149 // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne i8* %[[BASE_RELOADED]], null, !nosanitize
150 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize
151 // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize
152 // CHECK-SANITIZE-CPP-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize
153 // CHECK-SANITIZE-NEXT: %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW:.*]] = xor i1 %[[COMPUTED_OFFSET_OVERFLOWED]], true, !nosanitize
154 // CHECK-SANITIZE-NEXT: %[[POSORZEROVALID:.*]] = icmp uge i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize
155 // CHECK-SANITIZE-NEXT: %[[POSORZEROOFFSET:.*]] = icmp sge i64 %[[COMPUTED_OFFSET]], 0, !nosanitize
156 // CHECK-SANITIZE-NEXT: %[[NEGVALID:.*]] = icmp ult i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize
157 // CHECK-SANITIZE-NEXT: %[[APPLYING_OFFSET_DID_NOT_OVERFLOW:.*]] = select i1 %[[POSORZEROOFFSET]], i1 %[[POSORZEROVALID]], i1 %[[NEGVALID]], !nosanitize
158 // CHECK-SANITIZE-NEXT: %[[GEP_DID_NOT_OVERFLOW:.*]] = and i1 %[[APPLYING_OFFSET_DID_NOT_OVERFLOW]], %[[COMPUTED_OFFSET_DID_NOT_OVERFLOW]], !nosanitize
159 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[GEP_DID_NOT_OVERFLOW]], !nosanitize
160 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize
161 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]:
162 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_400]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]])
163 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_400]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]])
164 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.trap(){{.*}}, !nosanitize
165 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize
166 // CHECK-SANITIZE: [[CONT]]:
167 // CHECK-NEXT: ret i8* %[[ADD_PTR]]
168 #line 400
169 return base - offset;
170 }
171
postinc(char * base)172 char *postinc(char *base) {
173 // CHECK: define i8* @postinc(i8* %[[BASE:.*]])
174 // CHECK-NEXT: [[ENTRY:.*]]:
175 // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca i8*, align 8
176 // CHECK-NEXT: store i8* %[[BASE]], i8** %[[BASE_ADDR]], align 8
177 // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load i8*, i8** %[[BASE_ADDR]], align 8
178 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, i8* %[[BASE_RELOADED]], i32 1
179 // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint i8* %[[BASE_RELOADED]] to i64, !nosanitize
180 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], 1, !nosanitize
181 // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne i8* %[[BASE_RELOADED]], null, !nosanitize
182 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize
183 // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize
184 // CHECK-SANITIZE-CPP-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize
185 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize
186 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[COMPUTED_GEP_IS_UGE_BASE]], !nosanitize
187 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize
188 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]:
189 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_500]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]])
190 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_500]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]])
191 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.trap(){{.*}}, !nosanitize
192 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize
193 // CHECK-SANITIZE: [[CONT]]:
194 // CHECK-NEXT: store i8* %[[ADD_PTR]], i8** %[[BASE_ADDR]], align 8
195 // CHECK-NEXT: %[[ADD_PTR_RELOADED:.*]] = load i8*, i8** %[[BASE_ADDR]], align 8
196 // CHECK-NEXT: ret i8* %[[ADD_PTR_RELOADED]]
197 #line 500
198 base++;
199 return base;
200 }
201
postdec(char * base)202 char *postdec(char *base) {
203 // CHECK: define i8* @postdec(i8* %[[BASE:.*]])
204 // CHECK-NEXT: [[ENTRY:.*]]:
205 // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca i8*, align 8
206 // CHECK-NEXT: store i8* %[[BASE]], i8** %[[BASE_ADDR]], align 8
207 // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load i8*, i8** %[[BASE_ADDR]], align 8
208 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, i8* %[[BASE_RELOADED]], i32 -1
209 // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint i8* %[[BASE_RELOADED]] to i64, !nosanitize
210 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], -1, !nosanitize
211 // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne i8* %[[BASE_RELOADED]], null, !nosanitize
212 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize
213 // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize
214 // CHECK-SANITIZE-CPP-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize
215 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_ULE_BASE:.*]] = icmp ule i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize
216 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[COMPUTED_GEP_IS_ULE_BASE]], !nosanitize
217 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize
218 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]:
219 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_600]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]])
220 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_600]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]])
221 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.trap(){{.*}}, !nosanitize
222 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize
223 // CHECK-SANITIZE: [[CONT]]:
224 // CHECK-NEXT: store i8* %[[ADD_PTR]], i8** %[[BASE_ADDR]], align 8
225 // CHECK-NEXT: %[[ADD_PTR_RELOADED:.*]] = load i8*, i8** %[[BASE_ADDR]], align 8
226 // CHECK-NEXT: ret i8* %[[ADD_PTR_RELOADED]]
227 #line 600
228 base--;
229 return base;
230 }
231
preinc(char * base)232 char *preinc(char *base) {
233 // CHECK: define i8* @preinc(i8* %[[BASE:.*]])
234 // CHECK-NEXT: [[ENTRY:.*]]:
235 // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca i8*, align 8
236 // CHECK-NEXT: store i8* %[[BASE]], i8** %[[BASE_ADDR]], align 8
237 // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load i8*, i8** %[[BASE_ADDR]], align 8
238 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, i8* %[[BASE_RELOADED]], i32 1
239 // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint i8* %[[BASE_RELOADED]] to i64, !nosanitize
240 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], 1, !nosanitize
241 // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne i8* %[[BASE_RELOADED]], null, !nosanitize
242 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize
243 // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize
244 // CHECK-SANITIZE-CPP-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize
245 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_UGE_BASE:.*]] = icmp uge i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize
246 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[COMPUTED_GEP_IS_UGE_BASE]], !nosanitize
247 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize
248 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]:
249 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_700]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]])
250 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_700]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]])
251 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.trap(){{.*}}, !nosanitize
252 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize
253 // CHECK-SANITIZE: [[CONT]]:
254 // CHECK-NEXT: store i8* %[[ADD_PTR]], i8** %[[BASE_ADDR]], align 8
255 // CHECK-NEXT: %[[ADD_PTR_RELOADED:.*]] = load i8*, i8** %[[BASE_ADDR]], align 8
256 // CHECK-NEXT: ret i8* %[[ADD_PTR_RELOADED]]
257 #line 700
258 ++base;
259 return base;
260 }
261
predec(char * base)262 char *predec(char *base) {
263 // CHECK: define i8* @predec(i8* %[[BASE:.*]])
264 // CHECK-NEXT: [[ENTRY:.*]]:
265 // CHECK-NEXT: %[[BASE_ADDR:.*]] = alloca i8*, align 8
266 // CHECK-NEXT: store i8* %[[BASE]], i8** %[[BASE_ADDR]], align 8
267 // CHECK-NEXT: %[[BASE_RELOADED:.*]] = load i8*, i8** %[[BASE_ADDR]], align 8
268 // CHECK-NEXT: %[[ADD_PTR:.*]] = getelementptr inbounds i8, i8* %[[BASE_RELOADED]], i32 -1
269 // CHECK-SANITIZE-NEXT: %[[BASE_RELOADED_INT:.*]] = ptrtoint i8* %[[BASE_RELOADED]] to i64, !nosanitize
270 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP:.*]] = add i64 %[[BASE_RELOADED_INT]], -1, !nosanitize
271 // CHECK-SANITIZE-NEXT: %[[BASE_IS_NOT_NULLPTR:.*]] = icmp ne i8* %[[BASE_RELOADED]], null, !nosanitize
272 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_NOT_NULL:.*]] = icmp ne i64 %[[COMPUTED_GEP]], 0, !nosanitize
273 // CHECK-SANITIZE-C-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = and i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize
274 // CHECK-SANITIZE-CPP-NEXT: %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL:.*]] = icmp eq i1 %[[BASE_IS_NOT_NULLPTR]], %[[COMPUTED_GEP_IS_NOT_NULL]], !nosanitize
275 // CHECK-SANITIZE-NEXT: %[[COMPUTED_GEP_IS_ULE_BASE:.*]] = icmp ule i64 %[[COMPUTED_GEP]], %[[BASE_RELOADED_INT]], !nosanitize
276 // CHECK-SANITIZE-NEXT: %[[GEP_IS_OKAY:.*]] = and i1 %[[BOTH_POINTERS_ARE_NULL_OR_BOTH_ARE_NONNULL]], %[[COMPUTED_GEP_IS_ULE_BASE]], !nosanitize
277 // CHECK-SANITIZE-NEXT: br i1 %[[GEP_IS_OKAY]], label %[[CONT:.*]], label %[[HANDLER_POINTER_OVERFLOW:[^,]+]],{{.*}} !nosanitize
278 // CHECK-SANITIZE: [[HANDLER_POINTER_OVERFLOW]]:
279 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_pointer_overflow_abort(i8* bitcast ({ {{{.*}}} }* @[[LINE_800]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]])
280 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_pointer_overflow(i8* bitcast ({ {{{.*}}} }* @[[LINE_800]] to i8*), i64 %[[BASE_RELOADED_INT]], i64 %[[COMPUTED_GEP]])
281 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.trap(){{.*}}, !nosanitize
282 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize
283 // CHECK-SANITIZE: [[CONT]]:
284 // CHECK-NEXT: store i8* %[[ADD_PTR]], i8** %[[BASE_ADDR]], align 8
285 // CHECK-NEXT: %[[ADD_PTR_RELOADED:.*]] = load i8*, i8** %[[BASE_ADDR]], align 8
286 // CHECK-NEXT: ret i8* %[[ADD_PTR_RELOADED]]
287 #line 800
288 --base;
289 return base;
290 }
291
292 #ifdef __cplusplus
293 }
294 #endif
295