derek.holloway
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61 lines
2.5 KiB
C
61 lines
2.5 KiB
C
// RUN: %clang -fsanitize=implicit-bitfield-conversion -target x86_64-linux -S -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,CHECK-BITFIELD-CONVERSION
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// RUN: %clang -fsanitize=implicit-integer-conversion -target x86_64-linux -S -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK
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// RUN: %clang -fsanitize=implicit-conversion -target x86_64-linux -S -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,CHECK-BITFIELD-CONVERSION
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typedef struct _xx {
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int x1:3;
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char x2:2;
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} xx, *pxx;
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xx vxx;
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// CHECK-LABEL: define{{.*}} void @foo1
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void foo1(int x) {
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vxx.x1 = x;
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// CHECK: store i8 %{{.*}}
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// CHECK-NEXT: [[BFRESULTSHL:%.*]] = shl i8 {{.*}}, 5
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// CHECK-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 5
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// CHECK-NEXT: [[BFRESULTCAST:%.*]] = sext i8 [[BFRESULTASHR]] to i32
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// CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
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// CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
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// CHECK-BITFIELD-CONVERSION: [[CONT]]:
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// CHECK-NEXT: ret void
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}
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// CHECK-LABEL: define{{.*}} void @foo2
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void foo2(int x) {
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vxx.x2 = x;
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// CHECK: store i8 %{{.*}}
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// CHECK-NEXT: [[BFRESULTSHL:%.*]] = shl i8 {{.*}}, 6
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// CHECK-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 6
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// CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
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// CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
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// CHECK-BITFIELD-CONVERSION: [[CONT]]:
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// CHECK-NEXT: ret void
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}
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// CHECK-LABEL: define{{.*}} void @foo3
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void foo3() {
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vxx.x1++;
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// CHECK: store i8 %{{.*}}
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// CHECK-NEXT: [[BFRESULTSHL:%.*]] = shl i8 {{.*}}, 5
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// CHECK-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 5
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// CHECK-NEXT: [[BFRESULTCAST:%.*]] = sext i8 [[BFRESULTASHR]] to i32
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// CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
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// CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
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// CHECK-BITFIELD-CONVERSION: [[CONT]]:
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// CHECK-NEXT: ret void
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}
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// CHECK-LABEL: define{{.*}} void @foo4
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void foo4(int x) {
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vxx.x1 += x;
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// CHECK: store i8 %{{.*}}
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// CHECK-NEXT: [[BFRESULTSHL:%.*]] = shl i8 {{.*}}, 5
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// CHECK-NEXT: [[BFRESULTASHR:%.*]] = ashr i8 [[BFRESULTSHL]], 5
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// CHECK-NEXT: [[BFRESULTCAST:%.*]] = sext i8 [[BFRESULTASHR]] to i32
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// CHECK-BITFIELD-CONVERSION: call void @__ubsan_handle_implicit_conversion
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// CHECK-BITFIELD-CONVERSION-NEXT: br label %[[CONT:.*]], !nosanitize
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// CHECK-BITFIELD-CONVERSION: [[CONT]]:
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// CHECK-NEXT: ret void
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} |