| Evgeniy Stepanov | 02279ed | 2016-03-15 20:19:29 +0000 | [diff] [blame] | 1 | // __cfi_check_fail codegen when not all CFI checkers are enabled. |
| 2 | // RUN: %clang_cc1 -triple x86_64-unknown-linux -O0 -fsanitize-cfi-cross-dso \ |
| 3 | // RUN: -fsanitize=cfi-vcall \ |
| 4 | // RUN: -emit-llvm -o - %s | FileCheck %s |
| 5 | |
| 6 | void caller(void (*f)()) { |
| 7 | f(); |
| 8 | } |
| 9 | |
| Nirav Dave | e585b5c | 2016-04-05 18:59:37 +0000 | [diff] [blame] | 10 | // CHECK: define weak_odr hidden void @__cfi_check_fail(i8*, i8*) |
| Evgeniy Stepanov | 02279ed | 2016-03-15 20:19:29 +0000 | [diff] [blame] | 11 | // CHECK: store i8* %0, i8** %[[ALLOCA0:.*]], align 8 |
| 12 | // CHECK: store i8* %1, i8** %[[ALLOCA1:.*]], align 8 |
| 13 | // CHECK: %[[DATA:.*]] = load i8*, i8** %[[ALLOCA0]], align 8 |
| 14 | // CHECK: %[[ADDR:.*]] = load i8*, i8** %[[ALLOCA1]], align 8 |
| 15 | // CHECK: %[[ICMP_NOT_NULL:.*]] = icmp ne i8* %[[DATA]], null |
| 16 | // CHECK: br i1 %[[ICMP_NOT_NULL]], label %[[CONT0:.*]], label %[[TRAP:.*]], |
| 17 | |
| 18 | // CHECK: [[TRAP]]: |
| 19 | // CHECK-NEXT: call void @llvm.trap() |
| 20 | // CHECK-NEXT: unreachable |
| 21 | |
| 22 | // CHECK: [[CONT0]]: |
| 23 | // CHECK: %[[A:.*]] = bitcast i8* %[[DATA]] to { i8, { i8*, i32, i32 }, i8* }* |
| 24 | // CHECK: %[[KINDPTR:.*]] = getelementptr {{.*}} %[[A]], i32 0, i32 0 |
| 25 | // CHECK: %[[KIND:.*]] = load i8, i8* %[[KINDPTR]], align 4 |
| Peter Collingbourne | 8dd14da | 2016-06-24 21:21:46 +0000 | [diff] [blame] | 26 | // CHECK: %[[VTVALID0:.*]] = call i1 @llvm.type.test(i8* %[[ADDR]], metadata !"all-vtables") |
| Evgeniy Stepanov | 02279ed | 2016-03-15 20:19:29 +0000 | [diff] [blame] | 27 | // CHECK: %[[VTVALID:.*]] = zext i1 %[[VTVALID0]] to i64 |
| 28 | // CHECK: %[[NOT_0:.*]] = icmp ne i8 %[[KIND]], 0 |
| 29 | // CHECK: br i1 %[[NOT_0]], label %[[CONT1:.*]], label %[[HANDLE0:.*]], !prof |
| 30 | |
| 31 | // CHECK: [[HANDLE0]]: |
| 32 | // CHECK: %[[DATA0:.*]] = ptrtoint i8* %[[DATA]] to i64, |
| 33 | // CHECK: %[[ADDR0:.*]] = ptrtoint i8* %[[ADDR]] to i64, |
| 34 | // CHECK: call void @__ubsan_handle_cfi_check_fail_abort(i64 %[[DATA0]], i64 %[[ADDR0]], i64 %[[VTVALID]]) |
| 35 | // CHECK: unreachable |
| 36 | |
| 37 | // CHECK: [[CONT1]]: |
| 38 | // CHECK: %[[NOT_1:.*]] = icmp ne i8 %[[KIND]], 1 |
| 39 | // CHECK: br i1 %[[NOT_1]], label %[[CONT2:.*]], label %[[HANDLE1:.*]], !nosanitize |
| 40 | |
| 41 | // CHECK: [[HANDLE1]]: |
| 42 | // CHECK-NEXT: call void @llvm.trap() |
| 43 | // CHECK-NEXT: unreachable |
| 44 | |
| 45 | // CHECK: [[CONT2]]: |
| 46 | // CHECK: %[[NOT_2:.*]] = icmp ne i8 %[[KIND]], 2 |
| 47 | // CHECK: br i1 %[[NOT_2]], label %[[CONT3:.*]], label %[[HANDLE2:.*]], !nosanitize |
| 48 | |
| 49 | // CHECK: [[HANDLE2]]: |
| 50 | // CHECK-NEXT: call void @llvm.trap() |
| 51 | // CHECK-NEXT: unreachable |
| 52 | |
| 53 | // CHECK: [[CONT3]]: |
| 54 | // CHECK: %[[NOT_3:.*]] = icmp ne i8 %[[KIND]], 3 |
| 55 | // CHECK: br i1 %[[NOT_3]], label %[[CONT4:.*]], label %[[HANDLE3:.*]], !nosanitize |
| 56 | |
| 57 | // CHECK: [[HANDLE3]]: |
| 58 | // CHECK-NEXT: call void @llvm.trap() |
| 59 | // CHECK-NEXT: unreachable |
| 60 | |
| 61 | // CHECK: [[CONT4]]: |
| 62 | // CHECK: %[[NOT_4:.*]] = icmp ne i8 %[[KIND]], 4 |
| 63 | // CHECK: br i1 %[[NOT_4]], label %[[CONT5:.*]], label %[[HANDLE4:.*]], !nosanitize |
| 64 | |
| 65 | // CHECK: [[HANDLE4]]: |
| 66 | // CHECK-NEXT: call void @llvm.trap() |
| 67 | // CHECK-NEXT: unreachable |
| 68 | |
| 69 | // CHECK: [[CONT5]]: |
| 70 | // CHECK: ret void |