163 lines
6.3 KiB
C++
163 lines
6.3 KiB
C++
// RUN: %clang_cc1 -triple x86_64-linux-gnu -ffine-grained-bitfield-accesses \
|
|
// RUN: -emit-llvm -o - %s | FileCheck %s
|
|
// RUN: %clang_cc1 -triple x86_64-linux-gnu -ffine-grained-bitfield-accesses \
|
|
// RUN: -emit-llvm -fsanitize=address -o - %s | FileCheck %s --check-prefix=SANITIZE
|
|
// Check -fsplit-bitfields will be ignored since sanitizer is enabled.
|
|
|
|
struct S1 {
|
|
unsigned f1:2;
|
|
unsigned f2:6;
|
|
unsigned f3:8;
|
|
unsigned f4:4;
|
|
unsigned f5:8;
|
|
};
|
|
|
|
S1 a1;
|
|
unsigned read8_1() {
|
|
// CHECK-LABEL: @_Z7read8_1v
|
|
// CHECK: %bf.load = load i8, i8* getelementptr inbounds (%struct.S1, %struct.S1* @a1, i32 0, i32 1), align 1
|
|
// CHECK-NEXT: %bf.cast = zext i8 %bf.load to i32
|
|
// CHECK-NEXT: ret i32 %bf.cast
|
|
// SANITIZE-LABEL: @_Z7read8_1v
|
|
// SANITIZE: %bf.load = load i32, i32* getelementptr inbounds {{.*}}, align 4
|
|
// SANITIZE: %bf.lshr = lshr i32 %bf.load, 8
|
|
// SANITIZE: %bf.clear = and i32 %bf.lshr, 255
|
|
// SANITIZE: ret i32 %bf.clear
|
|
return a1.f3;
|
|
}
|
|
void write8_1() {
|
|
// CHECK-LABEL: @_Z8write8_1v
|
|
// CHECK: store i8 3, i8* getelementptr inbounds (%struct.S1, %struct.S1* @a1, i32 0, i32 1), align 1
|
|
// CHECK-NEXT: ret void
|
|
// SANITIZE-LABEL: @_Z8write8_1v
|
|
// SANITIZE: %bf.load = load i32, i32* getelementptr inbounds {{.*}}, align 4
|
|
// SANITIZE-NEXT: %bf.clear = and i32 %bf.load, -65281
|
|
// SANITIZE-NEXT: %bf.set = or i32 %bf.clear, 768
|
|
// SANITIZE-NEXT: store i32 %bf.set, i32* getelementptr inbounds {{.*}}, align 4
|
|
// SANITIZE-NEXT: ret void
|
|
a1.f3 = 3;
|
|
}
|
|
|
|
unsigned read8_2() {
|
|
// CHECK-LABEL: @_Z7read8_2v
|
|
// CHECK: %bf.load = load i16, i16* getelementptr inbounds (%struct.S1, %struct.S1* @a1, i32 0, i32 2), align 2
|
|
// CHECK-NEXT: %bf.lshr = lshr i16 %bf.load, 4
|
|
// CHECK-NEXT: %bf.clear = and i16 %bf.lshr, 255
|
|
// CHECK-NEXT: %bf.cast = zext i16 %bf.clear to i32
|
|
// CHECK-NEXT: ret i32 %bf.cast
|
|
// SANITIZE-LABEL: @_Z7read8_2v
|
|
// SANITIZE: %bf.load = load i32, i32* getelementptr inbounds {{.*}}, align 4
|
|
// SANITIZE-NEXT: %bf.lshr = lshr i32 %bf.load, 20
|
|
// SANITIZE-NEXT: %bf.clear = and i32 %bf.lshr, 255
|
|
// SANITIZE-NEXT: ret i32 %bf.clear
|
|
return a1.f5;
|
|
}
|
|
void write8_2() {
|
|
// CHECK-LABEL: @_Z8write8_2v
|
|
// CHECK: %bf.load = load i16, i16* getelementptr inbounds (%struct.S1, %struct.S1* @a1, i32 0, i32 2), align 2
|
|
// CHECK-NEXT: %bf.clear = and i16 %bf.load, -4081
|
|
// CHECK-NEXT: %bf.set = or i16 %bf.clear, 48
|
|
// CHECK-NEXT: store i16 %bf.set, i16* getelementptr inbounds (%struct.S1, %struct.S1* @a1, i32 0, i32 2), align 2
|
|
// CHECK-NEXT: ret void
|
|
// SANITIZE-LABEL: @_Z8write8_2v
|
|
// SANITIZE: %bf.load = load i32, i32* getelementptr inbounds {{.*}}, align 4
|
|
// SANITIZE-NEXT: %bf.clear = and i32 %bf.load, -267386881
|
|
// SANITIZE-NEXT: %bf.set = or i32 %bf.clear, 3145728
|
|
// SANITIZE-NEXT: store i32 %bf.set, i32* getelementptr inbounds {{.*}}, align 4
|
|
// SANITIZE-NEXT: ret void
|
|
a1.f5 = 3;
|
|
}
|
|
|
|
struct S2 {
|
|
unsigned long f1:16;
|
|
unsigned long f2:16;
|
|
unsigned long f3:6;
|
|
};
|
|
|
|
S2 a2;
|
|
unsigned read16_1() {
|
|
// CHECK-LABEL: @_Z8read16_1v
|
|
// CHECK: %bf.load = load i16, i16* getelementptr inbounds (%struct.S2, %struct.S2* @a2, i32 0, i32 0), align 8
|
|
// CHECK-NEXT: %bf.cast = zext i16 %bf.load to i64
|
|
// CHECK-NEXT: %conv = trunc i64 %bf.cast to i32
|
|
// CHECK-NEXT: ret i32 %conv
|
|
// SANITIZE-LABEL: @_Z8read16_1v
|
|
// SANITIZE: %bf.load = load i64, i64* bitcast {{.*}}, align 8
|
|
// SANITIZE-NEXT: %bf.clear = and i64 %bf.load, 65535
|
|
// SANITIZE-NEXT: %conv = trunc i64 %bf.clear to i32
|
|
// SANITIZE-NEXT: ret i32 %conv
|
|
return a2.f1;
|
|
}
|
|
unsigned read16_2() {
|
|
// CHECK-LABEL: @_Z8read16_2v
|
|
// CHECK: %bf.load = load i16, i16* getelementptr inbounds (%struct.S2, %struct.S2* @a2, i32 0, i32 1), align 2
|
|
// CHECK-NEXT: %bf.cast = zext i16 %bf.load to i64
|
|
// CHECK-NEXT: %conv = trunc i64 %bf.cast to i32
|
|
// CHECK-NEXT: ret i32 %conv
|
|
// SANITIZE-LABEL: @_Z8read16_2v
|
|
// SANITIZE: %bf.load = load i64, i64* bitcast {{.*}}, align 8
|
|
// SANITIZE-NEXT: %bf.lshr = lshr i64 %bf.load, 16
|
|
// SANITIZE-NEXT: %bf.clear = and i64 %bf.lshr, 65535
|
|
// SANITIZE-NEXT: %conv = trunc i64 %bf.clear to i32
|
|
// SANITIZE-NEXT: ret i32 %conv
|
|
return a2.f2;
|
|
}
|
|
|
|
void write16_1() {
|
|
// CHECK-LABEL: @_Z9write16_1v
|
|
// CHECK: store i16 5, i16* getelementptr inbounds (%struct.S2, %struct.S2* @a2, i32 0, i32 0), align 8
|
|
// CHECK-NEXT: ret void
|
|
// SANITIZE-LABEL: @_Z9write16_1v
|
|
// SANITIZE: %bf.load = load i64, i64* bitcast {{.*}}, align 8
|
|
// SANITIZE-NEXT: %bf.clear = and i64 %bf.load, -65536
|
|
// SANITIZE-NEXT: %bf.set = or i64 %bf.clear, 5
|
|
// SANITIZE-NEXT: store i64 %bf.set, i64* bitcast {{.*}}, align 8
|
|
// SANITIZE-NEXT: ret void
|
|
a2.f1 = 5;
|
|
}
|
|
void write16_2() {
|
|
// CHECK-LABEL: @_Z9write16_2v
|
|
// CHECK: store i16 5, i16* getelementptr inbounds (%struct.S2, %struct.S2* @a2, i32 0, i32 1), align 2
|
|
// CHECK-NEXT: ret void
|
|
// SANITIZE-LABEL: @_Z9write16_2v
|
|
// SANITIZE: %bf.load = load i64, i64* bitcast {{.*}}, align 8
|
|
// SANITIZE-NEXT: %bf.clear = and i64 %bf.load, -4294901761
|
|
// SANITIZE-NEXT: %bf.set = or i64 %bf.clear, 327680
|
|
// SANITIZE-NEXT: store i64 %bf.set, i64* bitcast {{.*}}, align 8
|
|
// SANITIZE-NEXT: ret void
|
|
a2.f2 = 5;
|
|
}
|
|
|
|
struct S3 {
|
|
unsigned long f1:14;
|
|
unsigned long f2:18;
|
|
unsigned long f3:32;
|
|
};
|
|
|
|
S3 a3;
|
|
unsigned read32_1() {
|
|
// CHECK-LABEL: @_Z8read32_1v
|
|
// CHECK: %bf.load = load i32, i32* getelementptr inbounds (%struct.S3, %struct.S3* @a3, i32 0, i32 1), align 4
|
|
// CHECK-NEXT: %bf.cast = zext i32 %bf.load to i64
|
|
// CHECK-NEXT: %conv = trunc i64 %bf.cast to i32
|
|
// CHECK-NEXT: ret i32 %conv
|
|
// SANITIZE-LABEL: @_Z8read32_1v
|
|
// SANITIZE: %bf.load = load i64, i64* getelementptr inbounds {{.*}}, align 8
|
|
// SANITIZE-NEXT: %bf.lshr = lshr i64 %bf.load, 32
|
|
// SANITIZE-NEXT: %conv = trunc i64 %bf.lshr to i32
|
|
// SANITIZE-NEXT: ret i32 %conv
|
|
return a3.f3;
|
|
}
|
|
void write32_1() {
|
|
// CHECK-LABEL: @_Z9write32_1v
|
|
// CHECK: store i32 5, i32* getelementptr inbounds (%struct.S3, %struct.S3* @a3, i32 0, i32 1), align 4
|
|
// CHECK-NEXT: ret void
|
|
// SANITIZE-LABEL: @_Z9write32_1v
|
|
// SANITIZE: %bf.load = load i64, i64* getelementptr inbounds {{.*}}, align 8
|
|
// SANITIZE-NEXT: %bf.clear = and i64 %bf.load, 4294967295
|
|
// SANITIZE-NEXT: %bf.set = or i64 %bf.clear, 21474836480
|
|
// SANITIZE-NEXT: store i64 %bf.set, i64* getelementptr inbounds {{.*}}, align 8
|
|
// SANITIZE-NEXT: ret void
|
|
a3.f3 = 5;
|
|
}
|