forked from OSchip/llvm-project
278 lines
12 KiB
C++
278 lines
12 KiB
C++
// RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-gnu-linux -fsanitize=array-bounds,enum,float-cast-overflow,integer-divide-by-zero,implicit-unsigned-integer-truncation,implicit-signed-integer-truncation,implicit-integer-sign-change,unsigned-integer-overflow,signed-integer-overflow,shift-base,shift-exponent -O3 -disable-llvm-passes -emit-llvm -o - %s | FileCheck %s
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// CHECK: define{{.*}} void @_Z6BoundsRA10_KiDB15_
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void Bounds(const int (&Array)[10], _BitInt(15) Index) {
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int I1 = Array[Index];
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// CHECK: %[[SEXT:.+]] = sext i15 %{{.+}} to i64
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// CHECK: %[[CMP:.+]] = icmp ult i64 %[[SEXT]], 10
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// CHECK: br i1 %[[CMP]]
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// CHECK: call void @__ubsan_handle_out_of_bounds
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}
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// CHECK: define{{.*}} void @_Z4Enumv
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void Enum() {
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enum E1 { e1a = 0, e1b = 127 }
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e1;
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enum E2 { e2a = -1, e2b = 64 }
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e2;
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enum E3 { e3a = (1u << 31) - 1 }
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e3;
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_BitInt(34) a = e1;
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// CHECK: %[[E1:.+]] = icmp ule i32 %{{.*}}, 127
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// CHECK: br i1 %[[E1]]
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// CHECK: call void @__ubsan_handle_load_invalid_value_abort
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_BitInt(34) b = e2;
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// CHECK: %[[E2HI:.*]] = icmp sle i32 {{.*}}, 127
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// CHECK: %[[E2LO:.*]] = icmp sge i32 {{.*}}, -128
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// CHECK: %[[E2:.*]] = and i1 %[[E2HI]], %[[E2LO]]
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// CHECK: br i1 %[[E2]]
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// CHECK: call void @__ubsan_handle_load_invalid_value_abort
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_BitInt(34) c = e3;
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// CHECK: %[[E3:.*]] = icmp ule i32 {{.*}}, 2147483647
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// CHECK: br i1 %[[E3]]
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// CHECK: call void @__ubsan_handle_load_invalid_value_abort
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}
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// CHECK: define{{.*}} void @_Z13FloatOverflowfd
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void FloatOverflow(float f, double d) {
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_BitInt(10) E = f;
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// CHECK: fcmp ogt float %{{.+}}, -5.130000e+02
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// CHECK: fcmp olt float %{{.+}}, 5.120000e+02
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_BitInt(10) E2 = d;
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// CHECK: fcmp ogt double %{{.+}}, -5.130000e+02
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// CHECK: fcmp olt double %{{.+}}, 5.120000e+02
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_BitInt(7) E3 = f;
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// CHECK: fcmp ogt float %{{.+}}, -6.500000e+01
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// CHECK: fcmp olt float %{{.+}}, 6.400000e+01
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_BitInt(7) E4 = d;
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// CHECK: fcmp ogt double %{{.+}}, -6.500000e+01
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// CHECK: fcmp olt double %{{.+}}, 6.400000e+01
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}
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// CHECK: define{{.*}} void @_Z14UIntTruncationDU35_jy
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void UIntTruncation(unsigned _BitInt(35) E, unsigned int i, unsigned long long ll) {
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i = E;
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// CHECK: %[[LOADE:.+]] = load i35
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// CHECK: store i35 %[[LOADE]], i35* %[[EADDR:.+]]
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// CHECK: %[[LOADE2:.+]] = load i35, i35* %[[EADDR]]
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// CHECK: %[[CONV:.+]] = trunc i35 %[[LOADE2]] to i32
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// CHECK: %[[EXT:.+]] = zext i32 %[[CONV]] to i35
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// CHECK: %[[CHECK:.+]] = icmp eq i35 %[[EXT]], %[[LOADE2]]
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// CHECK: br i1 %[[CHECK]]
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// CHECK: call void @__ubsan_handle_implicit_conversion_abort
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E = ll;
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// CHECK: %[[LOADLL:.+]] = load i64
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// CHECK: %[[CONV:.+]] = trunc i64 %[[LOADLL]] to i35
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// CHECK: %[[EXT:.+]] = zext i35 %[[CONV]] to i64
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// CHECK: %[[CHECK:.+]] = icmp eq i64 %[[EXT]], %[[LOADLL]]
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// CHECK: br i1 %[[CHECK]]
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// CHECK: call void @__ubsan_handle_implicit_conversion_abort
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}
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// CHECK: define{{.*}} void @_Z13IntTruncationDB35_DU42_ij
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void IntTruncation(_BitInt(35) E, unsigned _BitInt(42) UE, int i, unsigned j) {
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j = E;
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// CHECK: %[[LOADE:.+]] = load i35
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// CHECK: store i35 %[[LOADE]], i35* %[[EADDR:.+]]
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// CHECK: %[[LOADE2:.+]] = load i35, i35* %[[EADDR]]
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// CHECK: %[[CONV:.+]] = trunc i35 %[[LOADE2]] to i32
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// CHECK: %[[EXT:.+]] = zext i32 %[[CONV]] to i35
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// CHECK: %[[CHECK:.+]] = icmp eq i35 %[[EXT]], %[[LOADE2]]
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// CHECK: br i1 %[[CHECK]]
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// CHECK: call void @__ubsan_handle_implicit_conversion_abort
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j = UE;
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// CHECK: %[[LOADUE:.+]] = load i42
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// CHECK: %[[CONV:.+]] = trunc i42 %[[LOADUE]] to i32
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// CHECK: %[[EXT:.+]] = zext i32 %[[CONV]] to i42
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// CHECK: %[[CHECK:.+]] = icmp eq i42 %[[EXT]], %[[LOADUE]]
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// CHECK: br i1 %[[CHECK]]
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// CHECK: call void @__ubsan_handle_implicit_conversion_abort
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// Note: also triggers sign change check.
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i = UE;
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// CHECK: %[[LOADUE:.+]] = load i42
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// CHECK: %[[CONV:.+]] = trunc i42 %[[LOADUE]] to i32
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// CHECK: %[[NEG:.+]] = icmp slt i32 %[[CONV]], 0
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// CHECK: %[[SIGNCHECK:.+]] = icmp eq i1 false, %[[NEG]]
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// CHECK: %[[EXT:.+]] = sext i32 %[[CONV]] to i42
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// CHECK: %[[CHECK:.+]] = icmp eq i42 %[[EXT]], %[[LOADUE]]
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// CHECK: %[[CHECKBOTH:.+]] = and i1 %[[SIGNCHECK]], %[[CHECK]]
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// CHECK: br i1 %[[CHECKBOTH]]
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// CHECK: call void @__ubsan_handle_implicit_conversion_abort
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// Note: also triggers sign change check.
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E = UE;
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// CHECK: %[[LOADUE:.+]] = load i42
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// CHECK: %[[CONV:.+]] = trunc i42 %[[LOADUE]] to i35
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// CHECK: %[[NEG:.+]] = icmp slt i35 %[[CONV]], 0
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// CHECK: %[[SIGNCHECK:.+]] = icmp eq i1 false, %[[NEG]]
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// CHECK: %[[EXT:.+]] = sext i35 %[[CONV]] to i42
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// CHECK: %[[CHECK:.+]] = icmp eq i42 %[[EXT]], %[[LOADUE]]
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// CHECK: %[[CHECKBOTH:.+]] = and i1 %[[SIGNCHECK]], %[[CHECK]]
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// CHECK: br i1 %[[CHECKBOTH]]
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// CHECK: call void @__ubsan_handle_implicit_conversion_abort
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}
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// CHECK: define{{.*}} void @_Z15SignChangeCheckDU39_DB39_
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void SignChangeCheck(unsigned _BitInt(39) UE, _BitInt(39) E) {
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UE = E;
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// CHECK: %[[LOADEU:.+]] = load i39
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// CHECK: %[[LOADE:.+]] = load i39
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// CHECK: store i39 %[[LOADE]], i39* %[[EADDR:.+]]
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// CHECK: %[[LOADE2:.+]] = load i39, i39* %[[EADDR]]
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// CHECK: %[[NEG:.+]] = icmp slt i39 %[[LOADE2]], 0
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// CHECK: %[[SIGNCHECK:.+]] = icmp eq i1 %[[NEG]], false
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// CHECK: br i1 %[[SIGNCHECK]]
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// CHECK: call void @__ubsan_handle_implicit_conversion_abort
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E = UE;
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// CHECK: store i39 %[[LOADE2]], i39* %[[UEADDR:.+]]
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// CHECK: %[[LOADUE2:.+]] = load i39, i39* %[[UEADDR]]
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// CHECK: %[[NEG:.+]] = icmp slt i39 %[[LOADUE2]], 0
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// CHECK: %[[SIGNCHECK:.+]] = icmp eq i1 false, %[[NEG]]
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// CHECK: br i1 %[[SIGNCHECK]]
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// CHECK: call void @__ubsan_handle_implicit_conversion_abort
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}
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// CHECK: define{{.*}} void @_Z9DivByZeroDB11_i
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void DivByZero(_BitInt(11) E, int i) {
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// Also triggers signed integer overflow.
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E / E;
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// CHECK: %[[EADDR:.+]] = alloca i11
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// CHECK: %[[E:.+]] = load i11, i11* %[[EADDR]]
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// CHECK: %[[E2:.+]] = load i11, i11* %[[EADDR]]
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// CHECK: %[[NEZERO:.+]] = icmp ne i11 %[[E2]], 0
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// CHECK: %[[NEMIN:.+]] = icmp ne i11 %[[E]], -1024
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// CHECK: %[[NENEG1:.+]] = icmp ne i11 %[[E2]], -1
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// CHECK: %[[OR:.+]] = or i1 %[[NEMIN]], %[[NENEG1]]
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// CHECK: %[[AND:.+]] = and i1 %[[NEZERO]], %[[OR]]
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// CHECK: br i1 %[[AND]]
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// CHECK: call void @__ubsan_handle_divrem_overflow_abort
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}
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// TODO:
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//-fsanitize=shift: (shift-base, shift-exponent) Shift operators where the amount shifted is greater or equal to the promoted bit-width of the left hand side or less than zero, or where the left hand side is negative. For a signed left shift, also checks for signed overflow in C, and for unsigned overflow in C++. You can use -fsanitize=shift-base or -fsanitize=shift-exponent to check only left-hand side or right-hand side of shift operation, respectively.
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// CHECK: define{{.*}} void @_Z6ShiftsDB9_
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void Shifts(_BitInt(9) E) {
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E >> E;
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// CHECK: %[[EADDR:.+]] = alloca i9
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// CHECK: %[[LHSE:.+]] = load i9, i9* %[[EADDR]]
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// CHECK: %[[RHSE:.+]] = load i9, i9* %[[EADDR]]
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// CHECK: %[[CMP:.+]] = icmp ule i9 %[[RHSE]], 8
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// CHECK: br i1 %[[CMP]]
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// CHECK: call void @__ubsan_handle_shift_out_of_bounds_abort
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E << E;
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// CHECK: %[[LHSE:.+]] = load i9, i9*
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// CHECK: %[[RHSE:.+]] = load i9, i9*
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// CHECK: %[[CMP:.+]] = icmp ule i9 %[[RHSE]], 8
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// CHECK: br i1 %[[CMP]]
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// CHECK: %[[ZEROS:.+]] = sub nuw nsw i9 8, %[[RHSE]]
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// CHECK: %[[CHECK:.+]] = lshr i9 %[[LHSE]], %[[ZEROS]]
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// CHECK: %[[SKIPSIGN:.+]] = lshr i9 %[[CHECK]], 1
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// CHECK: %[[CHECK:.+]] = icmp eq i9 %[[SKIPSIGN]]
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// CHECK: %[[PHI:.+]] = phi i1 [ true, %{{.+}} ], [ %[[CHECK]], %{{.+}} ]
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// CHECK: and i1 %[[CMP]], %[[PHI]]
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// CHECK: call void @__ubsan_handle_shift_out_of_bounds_abort
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}
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// CHECK: define{{.*}} void @_Z21SignedIntegerOverflowDB93_DB4_DB31_
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void SignedIntegerOverflow(_BitInt(93) BiggestE,
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_BitInt(4) SmallestE,
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_BitInt(31) JustRightE) {
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BiggestE + BiggestE;
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// CHECK: %[[LOADBIGGESTE2:.+]] = load i93
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// CHECK: store i93 %[[LOADBIGGESTE2]], i93* %[[BIGGESTEADDR:.+]]
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// CHECK: %[[LOAD1:.+]] = load i93, i93* %[[BIGGESTEADDR]]
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// CHECK: %[[LOAD2:.+]] = load i93, i93* %[[BIGGESTEADDR]]
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// CHECK: %[[OFCALL:.+]] = call { i93, i1 } @llvm.sadd.with.overflow.i93(i93 %[[LOAD1]], i93 %[[LOAD2]])
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// CHECK: %[[EXRESULT:.+]] = extractvalue { i93, i1 } %[[OFCALL]], 0
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// CHECK: %[[OFRESULT:.+]] = extractvalue { i93, i1 } %[[OFCALL]], 1
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// CHECK: %[[CHECK:.+]] = xor i1 %[[OFRESULT]], true
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// CHECK: br i1 %[[CHECK]]
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// CHECK: call void @__ubsan_handle_add_overflow_abort
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SmallestE - SmallestE;
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// CHECK: %[[LOAD1:.+]] = load i4, i4*
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// CHECK: %[[LOAD2:.+]] = load i4, i4*
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// CHECK: %[[OFCALL:.+]] = call { i4, i1 } @llvm.ssub.with.overflow.i4(i4 %[[LOAD1]], i4 %[[LOAD2]])
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// CHECK: %[[EXRESULT:.+]] = extractvalue { i4, i1 } %[[OFCALL]], 0
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// CHECK: %[[OFRESULT:.+]] = extractvalue { i4, i1 } %[[OFCALL]], 1
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// CHECK: %[[CHECK:.+]] = xor i1 %[[OFRESULT]], true
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// CHECK: br i1 %[[CHECK]]
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// CHECK: call void @__ubsan_handle_sub_overflow_abort
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JustRightE * JustRightE;
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// CHECK: %[[LOAD1:.+]] = load i31, i31*
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// CHECK: %[[LOAD2:.+]] = load i31, i31*
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// CHECK: %[[OFCALL:.+]] = call { i31, i1 } @llvm.smul.with.overflow.i31(i31 %[[LOAD1]], i31 %[[LOAD2]])
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// CHECK: %[[EXRESULT:.+]] = extractvalue { i31, i1 } %[[OFCALL]], 0
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// CHECK: %[[OFRESULT:.+]] = extractvalue { i31, i1 } %[[OFCALL]], 1
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// CHECK: %[[CHECK:.+]] = xor i1 %[[OFRESULT]], true
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// CHECK: br i1 %[[CHECK]]
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// CHECK: call void @__ubsan_handle_mul_overflow_abort
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}
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// CHECK: define{{.*}} void @_Z23UnsignedIntegerOverflowjDU23_DU35_
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void UnsignedIntegerOverflow(unsigned u,
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unsigned _BitInt(23) SmallE,
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unsigned _BitInt(35) BigE) {
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u = SmallE + SmallE;
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// CHECK: %[[BIGGESTEADDR:.+]] = alloca i23
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// CHECK: %[[LOADE1:.+]] = load i23, i23* %[[BIGGESTEADDR]]
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// CHECK: %[[LOADE2:.+]] = load i23, i23* %[[BIGGESTEADDR]]
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// CHECK: %[[OFCALL:.+]] = call { i23, i1 } @llvm.uadd.with.overflow.i23(i23 %[[LOADE1]], i23 %[[LOADE2]])
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// CHECK: %[[EXRESULT:.+]] = extractvalue { i23, i1 } %[[OFCALL]], 0
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// CHECK: %[[OFRESULT:.+]] = extractvalue { i23, i1 } %[[OFCALL]], 1
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// CHECK: %[[CHECK:.+]] = xor i1 %[[OFRESULT]], true
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// CHECK: br i1 %[[CHECK]]
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// CHECK: call void @__ubsan_handle_add_overflow_abort
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SmallE = u + u;
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// CHECK: %[[LOADU1:.+]] = load i32, i32*
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// CHECK: %[[LOADU2:.+]] = load i32, i32*
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// CHECK: %[[OFCALL:.+]] = call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %[[LOADU1]], i32 %[[LOADU2]])
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// CHECK: %[[EXRESULT:.+]] = extractvalue { i32, i1 } %[[OFCALL]], 0
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// CHECK: %[[OFRESULT:.+]] = extractvalue { i32, i1 } %[[OFCALL]], 1
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// CHECK: %[[CHECK:.+]] = xor i1 %[[OFRESULT]], true
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// CHECK: br i1 %[[CHECK]]
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// CHECK: call void @__ubsan_handle_add_overflow_abort
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SmallE = SmallE + SmallE;
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// CHECK: %[[LOADE1:.+]] = load i23, i23*
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// CHECK: %[[LOADE2:.+]] = load i23, i23*
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// CHECK: %[[OFCALL:.+]] = call { i23, i1 } @llvm.uadd.with.overflow.i23(i23 %[[LOADE1]], i23 %[[LOADE2]])
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// CHECK: %[[EXRESULT:.+]] = extractvalue { i23, i1 } %[[OFCALL]], 0
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// CHECK: %[[OFRESULT:.+]] = extractvalue { i23, i1 } %[[OFCALL]], 1
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// CHECK: %[[CHECK:.+]] = xor i1 %[[OFRESULT]], true
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// CHECK: br i1 %[[CHECK]]
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// CHECK: call void @__ubsan_handle_add_overflow_abort
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SmallE = BigE + BigE;
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// CHECK: %[[LOADE1:.+]] = load i35, i35*
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// CHECK: %[[LOADE2:.+]] = load i35, i35*
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// CHECK: %[[OFCALL:.+]] = call { i35, i1 } @llvm.uadd.with.overflow.i35(i35 %[[LOADE1]], i35 %[[LOADE2]])
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// CHECK: %[[EXRESULT:.+]] = extractvalue { i35, i1 } %[[OFCALL]], 0
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// CHECK: %[[OFRESULT:.+]] = extractvalue { i35, i1 } %[[OFCALL]], 1
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// CHECK: %[[CHECK:.+]] = xor i1 %[[OFRESULT]], true
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// CHECK: br i1 %[[CHECK]]
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// CHECK: call void @__ubsan_handle_add_overflow_abort
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BigE = BigE + BigE;
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// CHECK: %[[LOADE1:.+]] = load i35, i35*
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// CHECK: %[[LOADE2:.+]] = load i35, i35*
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// CHECK: %[[OFCALL:.+]] = call { i35, i1 } @llvm.uadd.with.overflow.i35(i35 %[[LOADE1]], i35 %[[LOADE2]])
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// CHECK: %[[EXRESULT:.+]] = extractvalue { i35, i1 } %[[OFCALL]], 0
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// CHECK: %[[OFRESULT:.+]] = extractvalue { i35, i1 } %[[OFCALL]], 1
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// CHECK: %[[CHECK:.+]] = xor i1 %[[OFRESULT]], true
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// CHECK: br i1 %[[CHECK]]
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// CHECK: call void @__ubsan_handle_add_overflow_abort
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}
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