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TheRock/compiler/amd-llvm/clang/test/CodeGenCXX/ubsan-bitfield-conversion.cpp
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// RUN: %clang -x c++ -fsanitize=implicit-bitfield-conversion -target x86_64-linux -S -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,CHECK-BITFIELD-CONVERSION
// RUN: %clang -x c++ -fsanitize=implicit-integer-conversion -target x86_64-linux -S -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK
// RUN: %clang -x c++ -fsanitize=implicit-conversion -target x86_64-linux -S -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,CHECK-BITFIELD-CONVERSION
struct S {
int a:3;
char b:2;
};
class C : public S {
public:
short c:3;
};
S s;
C c;
// CHECK-LABEL: define{{.*}} void @{{.*foo1.*}}
void foo1(int x) {
s.a = x;
// CHECK: store i8 %{{.*}}
// CHECK-BITFIELD-CONVERSION: [[BFRESULTSHL:%.*]] = shl i8 {{.*}}, 5
// CHECK-BITFIELD-CONVERSION-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 5
// CHECK-BITFIELD-CONVERSION-NEXT: [[BFRESULTCAST:%.*]] = sext i8 [[BFRESULTASHR]] to i32
// CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
// CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
c.a = x;
// CHECK: store i8 %{{.*}}
// CHECK-BITFIELD-CONVERSION: [[BFRESULTSHL:%.*]] = shl i8 {{.*}}, 5
// CHECK-BITFIELD-CONVERSION-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 5
// CHECK-BITFIELD-CONVERSION-NEXT: [[BFRESULTCAST:%.*]] = sext i8 [[BFRESULTASHR]] to i32
// CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
// CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
// CHECK-BITFIELD-CONVERSION: [[CONT]]:
// CHECK-NEXT: ret void
}
// CHECK-LABEL: define{{.*}} void @{{.*foo2.*}}
void foo2(int x) {
s.b = x;
// CHECK: store i8 %{{.*}}
// CHECK-BITFIELD-CONVERSION: [[BFRESULTSHL:%.*]] = shl i8 {{.*}}, 6
// CHECK-BITFIELD-CONVERSION-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 6
// CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
// CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
c.b = x;
// CHECK: store i8 %{{.*}}
// CHECK-BITFIELD-CONVERSION: [[BFRESULTSHL:%.*]] = shl i8 {{.*}}, 6
// CHECK-BITFIELD-CONVERSION-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 6
// CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
// CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
// CHECK-BITFIELD-CONVERSION: [[CONT]]:
// CHECK-NEXT: ret void
}
// CHECK-LABEL: define{{.*}} void @{{.*foo3.*}}
void foo3() {
s.a++;
// CHECK: store i8 %{{.*}}
// CHECK-NEXT: [[BFRESULTSHL:%.*]] = shl i8 {{.*}}, 5
// CHECK-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 5
// CHECK-NEXT: [[BFRESULTCAST:%.*]] = sext i8 [[BFRESULTASHR]] to i32
// CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
// CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
c.a++;
// CHECK: store i8 %{{.*}}
// CHECK-NEXT: [[BFRESULTSHL:%.*]] = shl i8 {{.*}}, 5
// CHECK-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 5
// CHECK-NEXT: [[BFRESULTCAST:%.*]] = sext i8 [[BFRESULTASHR]] to i32
// CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
// CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
// CHECK-BITFIELD-CONVERSION: [[CONT]]:
// CHECK-NEXT: ret void
}
// CHECK-LABEL: define{{.*}} void @{{.*foo4.*}}
void foo4(int x) {
s.a += x;
// CHECK: store i8 %{{.*}}
// CHECK-NEXT: [[BFRESULTSHL:%.*]] = shl i8 {{.*}}, 5
// CHECK-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 5
// CHECK-NEXT: [[BFRESULTCAST:%.*]] = sext i8 [[BFRESULTASHR]] to i32
// CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
// CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
c.a += x;
// CHECK: store i8 %{{.*}}
// CHECK-NEXT: [[BFRESULTSHL:%.*]] = shl i8 {{.*}}, 5
// CHECK-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 5
// CHECK-NEXT: [[BFRESULTCAST:%.*]] = sext i8 [[BFRESULTASHR]] to i32
// CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
// CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
// CHECK-BITFIELD-CONVERSION: [[CONT]]:
// CHECK-NEXT: ret void
}
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