1// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -ftrapv %s -emit-llvm -o - | FileCheck %s
2
3unsigned int ui, uj, uk;
4int i, j, k;
5
6// CHECK-LABEL: define void @test0()
7void test0() {
8  // -ftrapv doesn't affect unsigned arithmetic.
9  // CHECK:      [[T1:%.*]] = load i32* @uj
10  // CHECK-NEXT: [[T2:%.*]] = load i32* @uk
11  // CHECK-NEXT: [[T3:%.*]] = add i32 [[T1]], [[T2]]
12  // CHECK-NEXT: store i32 [[T3]], i32* @ui
13  ui = uj + uk;
14
15  // CHECK:      [[T1:%.*]] = load i32* @j
16  // CHECK-NEXT: [[T2:%.*]] = load i32* @k
17  // CHECK-NEXT: [[T3:%.*]] = call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 [[T1]], i32 [[T2]])
18  // CHECK-NEXT: [[T4:%.*]] = extractvalue { i32, i1 } [[T3]], 0
19  // CHECK-NEXT: [[T5:%.*]] = extractvalue { i32, i1 } [[T3]], 1
20  // CHECK-NEXT: [[T6:%.*]] = xor i1 [[T5]], true
21  // CHECK-NEXT: br i1 [[T6]]
22  // CHECK:      call void @llvm.trap()
23  i = j + k;
24}
25
26// CHECK-LABEL: define void @test1()
27void test1() {
28  extern void opaque(int);
29  opaque(i++);
30
31  // CHECK:      [[T1:%.*]] = load i32* @i
32  // CHECK-NEXT: [[T2:%.*]] = call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 [[T1]], i32 1)
33  // CHECK-NEXT: [[T3:%.*]] = extractvalue { i32, i1 } [[T2]], 0
34  // CHECK-NEXT: [[T4:%.*]] = extractvalue { i32, i1 } [[T2]], 1
35  // CHECK-NEXT: [[T5:%.*]] = xor i1 [[T4]], true
36  // CHECK-NEXT: br i1 [[T5]]
37  // CHECK:      call void @llvm.trap()
38}
39
40// CHECK-LABEL: define void @test2()
41void test2() {
42  extern void opaque(int);
43  opaque(++i);
44
45  // CHECK:      [[T1:%.*]] = load i32* @i
46  // CHECK-NEXT: [[T2:%.*]] = call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 [[T1]], i32 1)
47  // CHECK-NEXT: [[T3:%.*]] = extractvalue { i32, i1 } [[T2]], 0
48  // CHECK-NEXT: [[T4:%.*]] = extractvalue { i32, i1 } [[T2]], 1
49  // CHECK-NEXT: [[T5:%.*]] = xor i1 [[T4]], true
50  // CHECK-NEXT: br i1 [[T5]]
51  // CHECK:      call void @llvm.trap()
52}
53
54// CHECK-LABEL: define void @test3(
55void test3(int a, int b, float c, float d) {
56  // CHECK-NOT:  @llvm.trap
57  (void)(a / b);
58  (void)(a % b);
59  (void)(c / d);
60  // CHECK: }
61}
62