| // RUN: %clang_cc1 -fsanitize=alignment,null,object-size,shift-base,shift-exponent,return,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -fsanitize-recover=alignment,null,object-size,shift-base,shift-exponent,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -emit-llvm %s -o - -triple x86_64-linux-gnu | opt -instnamer -S | FileCheck %s --check-prefix=CHECK-COMMON --check-prefix=CHECK-UBSAN |
| // RUN: %clang_cc1 -fsanitize-trap=alignment,null,object-size,shift-base,shift-exponent,return,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -fsanitize-recover=alignment,null,object-size,shift-base,shift-exponent,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -fsanitize=alignment,null,object-size,shift-base,shift-exponent,return,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -fsanitize-recover=alignment,null,object-size,shift-base,shift-exponent,signed-integer-overflow,vla-bound,float-cast-overflow,integer-divide-by-zero,bool,returns-nonnull-attribute,nonnull-attribute -emit-llvm %s -o - -triple x86_64-linux-gnu | opt -instnamer -S | FileCheck %s --check-prefix=CHECK-COMMON --check-prefix=CHECK-TRAP |
| // RUN: %clang_cc1 -fsanitize=null -fsanitize-recover=null -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefix=CHECK-NULL |
| // RUN: %clang_cc1 -fsanitize=signed-integer-overflow -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefix=CHECK-OVERFLOW |
| |
| // CHECK-UBSAN: @[[INT:.*]] = private unnamed_addr constant { i16, i16, [6 x i8] } { i16 0, i16 11, [6 x i8] c"'int'\00" } |
| |
| // FIXME: When we only emit each type once, use [[INT]] more below. |
| // CHECK-UBSAN: @[[LINE_100:.*]] = private unnamed_addr global {{.*}}, i32 100, i32 5 {{.*}} @[[INT]], i64 4, i8 1 |
| // CHECK-UBSAN: @[[LINE_200:.*]] = {{.*}}, i32 200, i32 10 {{.*}}, i64 4, i8 0 |
| // CHECK-UBSAN: @[[LINE_300:.*]] = {{.*}}, i32 300, i32 12 {{.*}} @{{.*}}, {{.*}} @{{.*}} |
| // CHECK-UBSAN: @[[LINE_400:.*]] = {{.*}}, i32 400, i32 12 {{.*}} @{{.*}}, {{.*}} @{{.*}} |
| // CHECK-UBSAN: @[[LINE_500:.*]] = {{.*}}, i32 500, i32 10 {{.*}} @{{.*}}, i64 4, i8 0 } |
| // CHECK-UBSAN: @[[LINE_600:.*]] = {{.*}}, i32 600, i32 3 {{.*}} @{{.*}}, i64 4, i8 1 } |
| |
| // CHECK-UBSAN: @[[STRUCT_S:.*]] = private unnamed_addr constant { i16, i16, [11 x i8] } { i16 -1, i16 0, [11 x i8] c"'struct S'\00" } |
| |
| // CHECK-UBSAN: @[[LINE_700:.*]] = {{.*}}, i32 700, i32 14 {{.*}} @[[STRUCT_S]], i64 4, i8 3 } |
| // CHECK-UBSAN: @[[LINE_800:.*]] = {{.*}}, i32 800, i32 12 {{.*}} @{{.*}} } |
| // CHECK-UBSAN: @[[LINE_900:.*]] = {{.*}}, i32 900, i32 11 {{.*}} @{{.*}} } |
| // CHECK-UBSAN: @[[LINE_1000:.*]] = {{.*}}, i32 1000, i32 10 {{.*}} @{{.*}} } |
| // CHECK-UBSAN: @[[FP16:.*]] = private unnamed_addr constant { i16, i16, [9 x i8] } { i16 1, i16 16, [9 x i8] c"'__fp16'\00" } |
| // CHECK-UBSAN: @[[LINE_1100:.*]] = {{.*}}, i32 1100, i32 8 {{.*}} @{{.*}} } |
| // CHECK-UBSAN: @[[LINE_1200:.*]] = {{.*}}, i32 1200, i32 10 {{.*}} @{{.*}} } |
| // CHECK-UBSAN: @[[LINE_1300:.*]] = {{.*}}, i32 1300, i32 10 {{.*}} @{{.*}} } |
| // CHECK-UBSAN: @[[LINE_1400:.*]] = {{.*}}, i32 1400, i32 10 {{.*}} @{{.*}} } |
| // Make sure we check the fp16 type_mismatch data so we can easily match the signed char float_cast_overflow |
| // CHECK-UBSAN: @[[LINE_1500:.*]] = {{.*}}, i32 1500, i32 10 {{.*}} @[[FP16]], {{.*}} } |
| // CHECK-UBSAN: @[[SCHAR:.*]] = private unnamed_addr constant { i16, i16, [14 x i8] } { i16 0, i16 7, [14 x i8] c"'signed char'\00" } |
| // CHECK-UBSAN: @[[LINE_1500:.*]] = {{.*}}, i32 1500, i32 10 {{.*}} @[[FP16]], {{.*}} } |
| // CHECK-UBSAN: @[[LINE_1600:.*]] = {{.*}}, i32 1600, i32 10 {{.*}} @{{.*}} } |
| |
| // CHECK-NULL: @[[LINE_100:.*]] = private unnamed_addr global {{.*}}, i32 100, i32 5 {{.*}} |
| |
| // PR6805 |
| // CHECK-COMMON-LABEL: @foo |
| // CHECK-NULL-LABEL: @foo |
| void foo() { |
| union { int i; } u; |
| // CHECK-COMMON: %[[CHECK0:.*]] = icmp ne {{.*}}* %[[PTR:.*]], null |
| |
| // CHECK-COMMON: %[[I8PTR:.*]] = bitcast i32* %[[PTR]] to i8* |
| // CHECK-COMMON-NEXT: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64.p0i8(i8* %[[I8PTR]], i1 false) |
| // CHECK-COMMON-NEXT: %[[CHECK1:.*]] = icmp uge i64 %[[SIZE]], 4 |
| |
| // CHECK-COMMON: %[[PTRTOINT:.*]] = ptrtoint {{.*}}* %[[PTR]] to i64 |
| // CHECK-COMMON-NEXT: %[[MISALIGN:.*]] = and i64 %[[PTRTOINT]], 3 |
| // CHECK-COMMON-NEXT: %[[CHECK2:.*]] = icmp eq i64 %[[MISALIGN]], 0 |
| |
| // CHECK-COMMON: %[[CHECK01:.*]] = and i1 %[[CHECK0]], %[[CHECK1]] |
| // CHECK-COMMON-NEXT: %[[OK:.*]] = and i1 %[[CHECK01]], %[[CHECK2]] |
| |
| // CHECK-UBSAN: br i1 %[[OK]], {{.*}} !prof ![[WEIGHT_MD:.*]], !nosanitize |
| // CHECK-TRAP: br i1 %[[OK]], {{.*}} |
| |
| // CHECK-UBSAN: %[[ARG:.*]] = ptrtoint {{.*}} %[[PTR]] to i64 |
| // CHECK-UBSAN-NEXT: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_100]] to i8*), i64 %[[ARG]]) |
| |
| // CHECK-TRAP: call void @llvm.trap() [[NR_NUW:#[0-9]+]] |
| // CHECK-TRAP-NEXT: unreachable |
| |
| // With -fsanitize=null, only perform the null check. |
| // CHECK-NULL: %[[NULL:.*]] = icmp ne {{.*}}, null |
| // CHECK-NULL: br i1 %[[NULL]] |
| // CHECK-NULL: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_100]] to i8*), i64 %{{.*}}) |
| #line 100 |
| u.i=1; |
| } |
| |
| // CHECK-COMMON-LABEL: @bar |
| int bar(int *a) { |
| // CHECK-COMMON: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64 |
| // CHECK-COMMON-NEXT: icmp uge i64 %[[SIZE]], 4 |
| |
| // CHECK-COMMON: %[[PTRINT:.*]] = ptrtoint |
| // CHECK-COMMON-NEXT: %[[MISALIGN:.*]] = and i64 %[[PTRINT]], 3 |
| // CHECK-COMMON-NEXT: icmp eq i64 %[[MISALIGN]], 0 |
| |
| // CHECK-UBSAN: %[[ARG:.*]] = ptrtoint |
| // CHECK-UBSAN-NEXT: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_200]] to i8*), i64 %[[ARG]]) |
| |
| // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]] |
| // CHECK-TRAP-NEXT: unreachable |
| |
| #line 200 |
| return *a; |
| } |
| |
| // CHECK-UBSAN-LABEL: @addr_space |
| int addr_space(int __attribute__((address_space(256))) *a) { |
| // CHECK-UBSAN-NOT: __ubsan |
| return *a; |
| } |
| |
| // CHECK-COMMON-LABEL: @lsh_overflow |
| int lsh_overflow(int a, int b) { |
| // CHECK-COMMON: %[[RHS_INBOUNDS:.*]] = icmp ule i32 %[[RHS:.*]], 31 |
| // CHECK-COMMON-NEXT: br i1 %[[RHS_INBOUNDS]], label %[[CHECK_BB:.*]], label %[[CONT_BB:.*]], |
| |
| // CHECK-COMMON: [[CHECK_BB]]: |
| // CHECK-COMMON-NEXT: %[[SHIFTED_OUT_WIDTH:.*]] = sub nuw nsw i32 31, %[[RHS]] |
| // CHECK-COMMON-NEXT: %[[SHIFTED_OUT:.*]] = lshr i32 %[[LHS:.*]], %[[SHIFTED_OUT_WIDTH]] |
| // CHECK-COMMON-NEXT: %[[NO_OVERFLOW:.*]] = icmp eq i32 %[[SHIFTED_OUT]], 0 |
| // CHECK-COMMON-NEXT: br label %[[CONT_BB]] |
| |
| // CHECK-COMMON: [[CONT_BB]]: |
| // CHECK-COMMON-NEXT: %[[VALID_BASE:.*]] = phi i1 [ true, {{.*}} ], [ %[[NO_OVERFLOW]], %[[CHECK_BB]] ] |
| // CHECK-COMMON-NEXT: %[[VALID:.*]] = and i1 %[[RHS_INBOUNDS]], %[[VALID_BASE]] |
| |
| // CHECK-UBSAN: br i1 %[[VALID]], {{.*}} !prof ![[WEIGHT_MD]] |
| // CHECK-TRAP: br i1 %[[VALID]] |
| |
| // CHECK-UBSAN: %[[ARG1:.*]] = zext |
| // CHECK-UBSAN-NEXT: %[[ARG2:.*]] = zext |
| // CHECK-UBSAN-NEXT: call void @__ubsan_handle_shift_out_of_bounds(i8* bitcast ({{.*}} @[[LINE_300]] to i8*), i64 %[[ARG1]], i64 %[[ARG2]]) |
| // CHECK-UBSAN-NOT: call void @__ubsan_handle_shift_out_of_bounds |
| |
| // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]] |
| // CHECK-TRAP: unreachable |
| // CHECK-TRAP-NOT: call void @llvm.trap() |
| |
| // CHECK-COMMON: %[[RET:.*]] = shl i32 %[[LHS]], %[[RHS]] |
| // CHECK-COMMON-NEXT: ret i32 %[[RET]] |
| #line 300 |
| return a << b; |
| } |
| |
| // CHECK-COMMON-LABEL: @rsh_inbounds |
| int rsh_inbounds(int a, int b) { |
| // CHECK-COMMON: %[[INBOUNDS:.*]] = icmp ule i32 %[[RHS:.*]], 31 |
| // CHECK-COMMON: br i1 %[[INBOUNDS]] |
| |
| // CHECK-UBSAN: %[[ARG1:.*]] = zext |
| // CHECK-UBSAN-NEXT: %[[ARG2:.*]] = zext |
| // CHECK-UBSAN-NEXT: call void @__ubsan_handle_shift_out_of_bounds(i8* bitcast ({{.*}} @[[LINE_400]] to i8*), i64 %[[ARG1]], i64 %[[ARG2]]) |
| |
| // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]] |
| // CHECK-TRAP-NEXT: unreachable |
| |
| // CHECK-COMMON: %[[RET:.*]] = ashr i32 {{.*}}, %[[RHS]] |
| // CHECK-COMMON-NEXT: ret i32 %[[RET]] |
| #line 400 |
| return a >> b; |
| } |
| |
| // CHECK-COMMON-LABEL: @load |
| int load(int *p) { |
| // CHECK-UBSAN: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_500]] to i8*), i64 %{{.*}}) |
| |
| // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]] |
| // CHECK-TRAP-NEXT: unreachable |
| #line 500 |
| return *p; |
| } |
| |
| // CHECK-COMMON-LABEL: @store |
| void store(int *p, int q) { |
| // CHECK-UBSAN: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_600]] to i8*), i64 %{{.*}}) |
| |
| // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]] |
| // CHECK-TRAP-NEXT: unreachable |
| #line 600 |
| *p = q; |
| } |
| |
| struct S { int k; }; |
| |
| // CHECK-COMMON-LABEL: @member_access |
| int *member_access(struct S *p) { |
| // CHECK-UBSAN: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_700]] to i8*), i64 %{{.*}}) |
| |
| // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]] |
| // CHECK-TRAP-NEXT: unreachable |
| #line 700 |
| return &p->k; |
| } |
| |
| // CHECK-COMMON-LABEL: @signed_overflow |
| int signed_overflow(int a, int b) { |
| // CHECK-UBSAN: %[[ARG1:.*]] = zext |
| // CHECK-UBSAN-NEXT: %[[ARG2:.*]] = zext |
| // CHECK-UBSAN-NEXT: call void @__ubsan_handle_add_overflow(i8* bitcast ({{.*}} @[[LINE_800]] to i8*), i64 %[[ARG1]], i64 %[[ARG2]]) |
| |
| // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]] |
| // CHECK-TRAP-NEXT: unreachable |
| #line 800 |
| return a + b; |
| } |
| |
| // CHECK-COMMON-LABEL: @no_return |
| int no_return() { |
| // Reaching the end of a noreturn function is fine in C. |
| // FIXME: If the user explicitly requests -fsanitize=return, we should catch |
| // that here even though it's not undefined behavior. |
| // CHECK-COMMON-NOT: call |
| // CHECK-COMMON-NOT: unreachable |
| // CHECK-COMMON: ret i32 |
| } |
| |
| // CHECK-UBSAN-LABEL: @vla_bound |
| void vla_bound(int n) { |
| // CHECK-UBSAN: icmp sgt i32 %[[PARAM:.*]], 0 |
| // |
| // CHECK-UBSAN: %[[ARG:.*]] = zext i32 %[[PARAM]] to i64 |
| // CHECK-UBSAN-NEXT: call void @__ubsan_handle_vla_bound_not_positive(i8* bitcast ({{.*}} @[[LINE_900]] to i8*), i64 %[[ARG]]) |
| #line 900 |
| int arr[n * 3]; |
| } |
| |
| // CHECK-UBSAN-LABEL: @int_float_no_overflow |
| float int_float_no_overflow(__int128 n) { |
| // CHECK-UBSAN-NOT: call void @__ubsan_handle |
| return n; |
| } |
| |
| // CHECK-COMMON-LABEL: @int_float_overflow |
| float int_float_overflow(unsigned __int128 n) { |
| // This is 2**104. FLT_MAX is 2**128 - 2**104. |
| // CHECK-COMMON: %[[INBOUNDS:.*]] = icmp ule i128 %{{.*}}, -20282409603651670423947251286016 |
| // CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]] |
| |
| // CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(i8* bitcast ({{.*}} @[[LINE_1000]] to i8*), |
| |
| // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]] |
| // CHECK-TRAP-NEXT: unreachable |
| #line 1000 |
| return n; |
| } |
| |
| // CHECK-COMMON-LABEL: @int_fp16_overflow |
| void int_fp16_overflow(int n, __fp16 *p) { |
| // CHECK-COMMON: %[[GE:.*]] = icmp sge i32 %{{.*}}, -65504 |
| // CHECK-COMMON: %[[LE:.*]] = icmp sle i32 %{{.*}}, 65504 |
| // CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]] |
| // CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]] |
| |
| // CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(i8* bitcast ({{.*}} @[[LINE_1100]] to i8*), |
| |
| // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]] |
| // CHECK-TRAP-NEXT: unreachable |
| #line 1100 |
| *p = n; |
| } |
| |
| // CHECK-COMMON-LABEL: @float_int_overflow |
| int float_int_overflow(float f) { |
| // CHECK-COMMON: %[[GE:.*]] = fcmp ogt float %[[F:.*]], 0xC1E0000020000000 |
| // CHECK-COMMON: %[[LE:.*]] = fcmp olt float %[[F]], 0x41E0000000000000 |
| // CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]] |
| // CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]] |
| |
| // CHECK-UBSAN: %[[CAST:.*]] = bitcast float %[[F]] to i32 |
| // CHECK-UBSAN: %[[ARG:.*]] = zext i32 %[[CAST]] to i64 |
| // CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(i8* bitcast ({{.*}} @[[LINE_1200]] to i8*), i64 %[[ARG]] |
| |
| // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]] |
| // CHECK-TRAP-NEXT: unreachable |
| #line 1200 |
| return f; |
| } |
| |
| // CHECK-COMMON-LABEL: @long_double_int_overflow |
| int long_double_int_overflow(long double ld) { |
| // CHECK-UBSAN: alloca x86_fp80 |
| |
| // CHECK-COMMON: %[[GE:.*]] = fcmp ogt x86_fp80 %[[F:.*]], 0xKC01E800000010000000 |
| // CHECK-COMMON: %[[LE:.*]] = fcmp olt x86_fp80 %[[F]], 0xK401E800000000000000 |
| // CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]] |
| // CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]] |
| |
| // CHECK-UBSAN: store x86_fp80 %[[F]], x86_fp80* %[[ALLOCA:.*]], align 16, !nosanitize |
| // CHECK-UBSAN: %[[ARG:.*]] = ptrtoint x86_fp80* %[[ALLOCA]] to i64 |
| // CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(i8* bitcast ({{.*}} @[[LINE_1300]] to i8*), i64 %[[ARG]] |
| |
| // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]] |
| // CHECK-TRAP-NEXT: unreachable |
| #line 1300 |
| return ld; |
| } |
| |
| // CHECK-COMMON-LABEL: @float_uint_overflow |
| unsigned float_uint_overflow(float f) { |
| // CHECK-COMMON: %[[GE:.*]] = fcmp ogt float %[[F:.*]], -1.{{0*}}e+00 |
| // CHECK-COMMON: %[[LE:.*]] = fcmp olt float %[[F]], 0x41F0000000000000 |
| // CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]] |
| // CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]] |
| |
| // CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(i8* bitcast ({{.*}} @[[LINE_1400]] to i8*), |
| |
| // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]] |
| // CHECK-TRAP-NEXT: unreachable |
| #line 1400 |
| return f; |
| } |
| |
| // CHECK-COMMON-LABEL: @fp16_char_overflow |
| signed char fp16_char_overflow(__fp16 *p) { |
| // CHECK-COMMON: %[[GE:.*]] = fcmp ogt float %[[F:.*]], -1.29{{0*}}e+02 |
| // CHECK-COMMON: %[[LE:.*]] = fcmp olt float %[[F]], 1.28{{0*}}e+02 |
| // CHECK-COMMON: %[[INBOUNDS:.*]] = and i1 %[[GE]], %[[LE]] |
| // CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]] |
| |
| // CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(i8* bitcast ({{.*}} @[[LINE_1500]] to i8*), |
| |
| // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]] |
| // CHECK-TRAP-NEXT: unreachable |
| #line 1500 |
| return *p; |
| } |
| |
| // CHECK-COMMON-LABEL: @float_float_overflow |
| float float_float_overflow(double f) { |
| // CHECK-COMMON: %[[F:.*]] = call double @llvm.fabs.f64( |
| // CHECK-COMMON: %[[GE:.*]] = fcmp ogt double %[[F]], 0x47EFFFFFE0000000 |
| // CHECK-COMMON: %[[LE:.*]] = fcmp olt double %[[F]], 0x7FF0000000000000 |
| // CHECK-COMMON: %[[OUTOFBOUNDS:.*]] = and i1 %[[GE]], %[[LE]] |
| // CHECK-COMMON: %[[INBOUNDS:.*]] = xor i1 %[[OUTOFBOUNDS]], true |
| // CHECK-COMMON-NEXT: br i1 %[[INBOUNDS]] |
| |
| // CHECK-UBSAN: call void @__ubsan_handle_float_cast_overflow(i8* bitcast ({{.*}} @[[LINE_1600]] to i8*), |
| |
| // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]] |
| // CHECK-TRAP-NEXT: unreachable |
| #line 1600 |
| return f; |
| } |
| |
| // CHECK-COMMON-LABEL: @int_divide_overflow |
| // CHECK-OVERFLOW-LABEL: @int_divide_overflow |
| int int_divide_overflow(int a, int b) { |
| // CHECK-COMMON: %[[ZERO:.*]] = icmp ne i32 %[[B:.*]], 0 |
| // CHECK-OVERFLOW-NOT: icmp ne i32 %{{.*}}, 0 |
| |
| // CHECK-COMMON: %[[AOK:.*]] = icmp ne i32 %[[A:.*]], -2147483648 |
| // CHECK-COMMON-NEXT: %[[BOK:.*]] = icmp ne i32 %[[B]], -1 |
| // CHECK-COMMON-NEXT: %[[OVER:.*]] = or i1 %[[AOK]], %[[BOK]] |
| // CHECK-COMMON: %[[OK:.*]] = and i1 %[[ZERO]], %[[OVER]] |
| // CHECK-COMMON: br i1 %[[OK]] |
| |
| // CHECK-OVERFLOW: %[[AOK:.*]] = icmp ne i32 %[[A:.*]], -2147483648 |
| // CHECK-OVERFLOW-NEXT: %[[BOK:.*]] = icmp ne i32 %[[B:.*]], -1 |
| // CHECK-OVERFLOW-NEXT: %[[OK:.*]] = or i1 %[[AOK]], %[[BOK]] |
| // CHECK-OVERFLOW: br i1 %[[OK]] |
| |
| // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]] |
| // CHECK-TRAP: unreachable |
| return a / b; |
| |
| // CHECK-COMMON: } |
| // CHECK-OVERFLOW: } |
| } |
| |
| // CHECK-COMMON-LABEL: @sour_bool |
| _Bool sour_bool(_Bool *p) { |
| // CHECK-COMMON: %[[OK:.*]] = icmp ule i8 {{.*}}, 1 |
| // CHECK-COMMON: br i1 %[[OK]] |
| |
| // CHECK-UBSAN: call void @__ubsan_handle_load_invalid_value(i8* bitcast ({{.*}}), i64 {{.*}}) |
| |
| // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]] |
| // CHECK-TRAP: unreachable |
| return *p; |
| } |
| |
| // CHECK-COMMON-LABEL: @ret_nonnull |
| __attribute__((returns_nonnull)) |
| int *ret_nonnull(int *a) { |
| // CHECK-COMMON: [[OK:%.*]] = icmp ne i32* {{.*}}, null |
| // CHECK-COMMON: br i1 [[OK]] |
| |
| // CHECK-UBSAN: call void @__ubsan_handle_nonnull_return |
| |
| // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]] |
| // CHECK-TRAP: unreachable |
| return a; |
| } |
| |
| // CHECK-COMMON-LABEL: @call_decl_nonnull |
| __attribute__((nonnull)) void decl_nonnull(int *a); |
| void call_decl_nonnull(int *a) { |
| // CHECK-COMMON: [[OK:%.*]] = icmp ne i32* {{.*}}, null |
| // CHECK-COMMON: br i1 [[OK]] |
| |
| // CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg |
| |
| // CHECK-TRAP: call void @llvm.trap() [[NR_NUW]] |
| // CHECK-TRAP: unreachable |
| decl_nonnull(a); |
| } |
| |
| extern void *memcpy (void *, const void *, unsigned) __attribute__((nonnull(1, 2))); |
| |
| // CHECK-COMMON-LABEL: @call_memcpy_nonnull |
| void call_memcpy_nonnull(void *p, void *q, int sz) { |
| // CHECK-COMMON: icmp ne i8* {{.*}}, null |
| // CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg |
| // CHECK-TRAP: call void @llvm.trap() |
| |
| // CHECK-COMMON: icmp ne i8* {{.*}}, null |
| // CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg |
| // CHECK-TRAP: call void @llvm.trap() |
| memcpy(p, q, sz); |
| } |
| |
| extern void *memmove (void *, const void *, unsigned) __attribute__((nonnull(1, 2))); |
| |
| // CHECK-COMMON-LABEL: @call_memmove_nonnull |
| void call_memmove_nonnull(void *p, void *q, int sz) { |
| // CHECK-COMMON: icmp ne i8* {{.*}}, null |
| // CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg |
| // CHECK-TRAP: call void @llvm.trap() |
| |
| // CHECK-COMMON: icmp ne i8* {{.*}}, null |
| // CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg |
| // CHECK-TRAP: call void @llvm.trap() |
| memmove(p, q, sz); |
| } |
| |
| // CHECK-COMMON-LABEL: @call_nonnull_variadic |
| __attribute__((nonnull)) void nonnull_variadic(int a, ...); |
| void call_nonnull_variadic(int a, int *b) { |
| // CHECK-COMMON: [[OK:%.*]] = icmp ne i32* {{.*}}, null |
| // CHECK-COMMON: br i1 [[OK]] |
| |
| // CHECK-UBSAN: call void @__ubsan_handle_nonnull_arg |
| // CHECK-UBSAN-NOT: __ubsan_handle_nonnull_arg |
| |
| // CHECK-COMMON: call void (i32, ...) @nonnull_variadic |
| nonnull_variadic(a, b); |
| } |
| |
| // CHECK-UBSAN: ![[WEIGHT_MD]] = !{!"branch_weights", i32 1048575, i32 1} |
| |
| // CHECK-TRAP: attributes [[NR_NUW]] = { noreturn nounwind } |