forked from OSchip/llvm-project
31 lines
1.1 KiB
C
31 lines
1.1 KiB
C
// 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
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int f(int x, int y) {
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// CHECK: %[[B1:.*]] = icmp ne i32 %[[D:.*]], 0
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// CHECK: %[[B2:.*]] = icmp ne i32 %[[N:.*]], -2147483648
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// CHECK: %[[B3:.*]] = icmp ne i32 %[[D]], -1
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// CHECK: %[[B4:.*]] = or i1 %[[B2]], %[[B3]]
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// CHECK: br i1 %[[B1]], label %[[L1:[0-9a-z_.]*]], label %[[L2:[0-9a-z_.]*]]
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// {{^|:}} used to match both Debug form of the captured label
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// cont:
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// and Release form
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// ; <label>:14
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// But avoids false matches inside other numbers such as [114 x i8].
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// CHECK: {{^|:}}[[L2]]
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// CHECK-NEXT: call void @llvm.trap()
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// CHECK-NEXT: unreachable
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// CHECK: {{^|:}}[[L1]]
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// CHECK-NEXT: br i1 %[[B4]], label %[[L3:[0-9a-z_.]*]], label %[[L4:[0-9a-z_.]*]]
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// CHECK: {{^|:}}[[L4]]
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// CHECK-NEXT: zext
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// CHECK-NEXT: zext
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// CHECK-NEXT: __ubsan_handle_divrem_overflow
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// CHECK: {{^|:}}[[L3]]
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// CHECK-NEXT: sdiv i32 %[[N]], %[[D]]
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return x / y;
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}
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