76 lines · c
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 %s5 6// Check that ignorelist does not affect generated code.7// RUN: echo "src:*" > %t-all.ignorelist8// RUN: %clang_cc1 -triple x86_64-unknown-linux -O0 -fsanitize-cfi-cross-dso \9// RUN: -fsanitize=cfi-vcall -fsanitize-ignorelist=%t-all.ignorelist \10// RUN: -emit-llvm -o - %s | FileCheck %s11 12void caller(void (*f)(void)) {13 f();14}15 16// CHECK: define weak_odr hidden void @__cfi_check_fail(ptr noundef %0, ptr noundef %1)17// CHECK: store ptr %0, ptr %[[ALLOCA0:.*]], align 818// CHECK: store ptr %1, ptr %[[ALLOCA1:.*]], align 819// CHECK: %[[DATA:.*]] = load ptr, ptr %[[ALLOCA0]], align 820// CHECK: %[[ADDR:.*]] = load ptr, ptr %[[ALLOCA1]], align 821// CHECK: %[[ICMP_NOT_NULL:.*]] = icmp ne ptr %[[DATA]], null22// CHECK: br i1 %[[ICMP_NOT_NULL]], label %[[CONT0:.*]], label %[[TRAP:.*]], !prof23 24// CHECK: [[TRAP]]:25// CHECK-NEXT: call void @llvm.ubsantrap(i8 2)26// CHECK-NEXT: unreachable27 28// CHECK: [[CONT0]]:29// CHECK: %[[KINDPTR:.*]] = getelementptr {{.*}} %[[DATA]], i32 0, i32 030// CHECK: %[[KIND:.*]] = load i8, ptr %[[KINDPTR]], align 431// CHECK: %[[VTVALID0:.*]] = call i1 @llvm.type.test(ptr %[[ADDR]], metadata !"all-vtables")32// CHECK: %[[VTVALID:.*]] = zext i1 %[[VTVALID0]] to i6433// CHECK: %[[NOT_0:.*]] = icmp ne i8 %[[KIND]], 034// CHECK: br i1 %[[NOT_0]], label %[[CONT1:.*]], label %[[HANDLE0:.*]], !prof35 36// CHECK: [[HANDLE0]]:37// CHECK: %[[DATA0:.*]] = ptrtoint ptr %[[DATA]] to i64,38// CHECK: %[[ADDR0:.*]] = ptrtoint ptr %[[ADDR]] to i64,39// CHECK: call void @__ubsan_handle_cfi_check_fail_abort(i64 %[[DATA0]], i64 %[[ADDR0]], i64 %[[VTVALID]])40// CHECK: unreachable41 42// CHECK: [[CONT1]]:43// CHECK: %[[NOT_1:.*]] = icmp ne i8 %[[KIND]], 144// CHECK: br i1 %[[NOT_1]], label %[[CONT2:.*]], label %[[HANDLE1:.*]], !prof45 46// CHECK: [[HANDLE1]]:47// CHECK-NEXT: call void @llvm.ubsantrap(i8 2)48// CHECK-NEXT: unreachable49 50// CHECK: [[CONT2]]:51// CHECK: %[[NOT_2:.*]] = icmp ne i8 %[[KIND]], 252// CHECK: br i1 %[[NOT_2]], label %[[CONT3:.*]], label %[[HANDLE2:.*]], !prof53 54// CHECK: [[HANDLE2]]:55// CHECK-NEXT: call void @llvm.ubsantrap(i8 2)56// CHECK-NEXT: unreachable57 58// CHECK: [[CONT3]]:59// CHECK: %[[NOT_3:.*]] = icmp ne i8 %[[KIND]], 360// CHECK: br i1 %[[NOT_3]], label %[[CONT4:.*]], label %[[HANDLE3:.*]], !prof61 62// CHECK: [[HANDLE3]]:63// CHECK-NEXT: call void @llvm.ubsantrap(i8 2)64// CHECK-NEXT: unreachable65 66// CHECK: [[CONT4]]:67// CHECK: %[[NOT_4:.*]] = icmp ne i8 %[[KIND]], 468// CHECK: br i1 %[[NOT_4]], label %[[CONT5:.*]], label %[[HANDLE4:.*]], !prof69 70// CHECK: [[HANDLE4]]:71// CHECK-NEXT: call void @llvm.ubsantrap(i8 2)72// CHECK-NEXT: unreachable73 74// CHECK: [[CONT5]]:75// CHECK: ret void76