31 lines · c
1// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -emit-llvm -o - %s -fsanitize=signed-integer-overflow,integer-divide-by-zero -fsanitize-trap=integer-divide-by-zero | FileCheck %s2 3int f(int x, int y) {4 // CHECK: %[[B1:.*]] = icmp ne i32 %[[D:.*]], 05 // CHECK: %[[B2:.*]] = icmp ne i32 %[[N:.*]], -21474836486 // CHECK: %[[B3:.*]] = icmp ne i32 %[[D]], -17 // CHECK: %[[B4:.*]] = or i1 %[[B2]], %[[B3]]8 // CHECK: br i1 %[[B1]], label %[[L1:[0-9a-z_.]*]], label %[[L2:[0-9a-z_.]*]]9 10 // {{^|:}} used to match both Debug form of the captured label11 // cont:12 // and Release form13 // ; <label>:1414 // But avoids false matches inside other numbers such as [114 x i8].15 // CHECK: {{^|:}}[[L2]]16 // CHECK-NEXT: call void @llvm.ubsantrap(i8 3)17 // CHECK-NEXT: unreachable18 19 // CHECK: {{^|:}}[[L1]]20 // CHECK-NEXT: br i1 %[[B4]], label %[[L3:[0-9a-z_.]*]], label %[[L4:[0-9a-z_.]*]]21 22 // CHECK: {{^|:}}[[L4]]23 // CHECK-NEXT: zext24 // CHECK-NEXT: zext25 // CHECK-NEXT: __ubsan_handle_divrem_overflow26 27 // CHECK: {{^|:}}[[L3]]28 // CHECK-NEXT: sdiv i32 %[[N]], %[[D]]29 return x / y;30}31