blob: 45f9fed61cf7dfe9282fc893f062863ced464787 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
// 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 %s
int f(int x, int y) {
// CHECK: %[[B1:.*]] = icmp ne i32 %[[D:.*]], 0
// CHECK: %[[B2:.*]] = icmp ne i32 %[[N:.*]], -2147483648
// CHECK: %[[B3:.*]] = icmp ne i32 %[[D]], -1
// CHECK: %[[B4:.*]] = or i1 %[[B2]], %[[B3]]
// CHECK: br i1 %[[B1]], label %[[L1:[0-9a-z_.]*]], label %[[L2:[0-9a-z_.]*]]
// {{^|:}} used to match both Debug form of the captured label
// cont:
// and Release form
// ; <label>:14
// But avoids false matches inside other numbers such as [114 x i8].
// CHECK: {{^|:}}[[L2]]
// CHECK-NEXT: call void @llvm.trap()
// CHECK-NEXT: unreachable
// CHECK: {{^|:}}[[L1]]
// CHECK-NEXT: br i1 %[[B4]], label %[[L3:[0-9a-z_.]*]], label %[[L4:[0-9a-z_.]*]]
// CHECK: {{^|:}}[[L4]]
// CHECK-NEXT: zext
// CHECK-NEXT: zext
// CHECK-NEXT: __ubsan_handle_divrem_overflow
// CHECK: {{^|:}}[[L3]]
// CHECK-NEXT: sdiv i32 %[[N]], %[[D]]
return x / y;
}
|
