| // RUN: %clang_cc1 -fcatch-undefined-behavior -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s |
| |
| // CHECK: @[[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: @[[LINE_100:.*]] = private unnamed_addr constant {{.*}}, i32 100, i32 5 {{.*}} @[[INT]], i64 4, i8 1 |
| // CHECK: @[[LINE_200:.*]] = {{.*}}, i32 200, i32 10 {{.*}}, i64 4, i8 0 |
| // CHECK: @[[LINE_300_A:.*]] = {{.*}}, i32 300, i32 12 {{.*}} @{{.*}}, {{.*}} @{{.*}} |
| // CHECK: @[[LINE_300_B:.*]] = {{.*}}, i32 300, i32 12 {{.*}} @{{.*}}, {{.*}} @{{.*}} |
| // CHECK: @[[LINE_400:.*]] = {{.*}}, i32 400, i32 12 {{.*}} @{{.*}}, {{.*}} @{{.*}} |
| // CHECK: @[[LINE_500:.*]] = {{.*}}, i32 500, i32 10 {{.*}} @{{.*}}, i64 4, i8 0 } |
| // CHECK: @[[LINE_600:.*]] = {{.*}}, i32 600, i32 3 {{.*}} @{{.*}}, i64 4, i8 1 } |
| |
| // CHECK: @[[STRUCT_S:.*]] = private unnamed_addr constant { i16, i16, [11 x i8] } { i16 -1, i16 0, [11 x i8] c"'struct S'\00" } |
| |
| // CHECK: @[[LINE_700:.*]] = {{.*}}, i32 700, i32 14 {{.*}} @[[STRUCT_S]], i64 4, i8 3 } |
| // CHECK: @[[LINE_800:.*]] = {{.*}}, i32 800, i32 12 {{.*}} @{{.*}} } |
| // CHECK: @[[LINE_900:.*]] = {{.*}}, i32 900, i32 11 {{.*}} @{{.*}} } |
| |
| // PR6805 |
| // CHECK: @foo |
| void foo() { |
| union { int i; } u; |
| // CHECK: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64({{.*}} %[[PTR:.*]], i1 false) |
| // CHECK-NEXT: %[[CHECK1:.*]] = icmp uge i64 %[[SIZE]], 4 |
| |
| // CHECK: %[[PTRTOINT:.*]] = ptrtoint {{.*}} %[[PTR]] to i64 |
| // CHECK-NEXT: %[[MISALIGN:.*]] = and i64 %[[PTRTOINT]], 3 |
| // CHECK-NEXT: %[[CHECK2:.*]] = icmp eq i64 %[[MISALIGN]], 0 |
| |
| // CHECK: %[[OK:.*]] = and i1 %[[CHECK1]], %[[CHECK2]] |
| // CHECK-NEXT: br i1 %[[OK]] |
| |
| // CHECK: %[[ARG:.*]] = ptrtoint {{.*}} %[[PTR]] to i64 |
| // CHECK-NEXT: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_100]] to i8*), i64 %[[ARG]]) noreturn nounwind |
| #line 100 |
| u.i=1; |
| } |
| |
| // CHECK: @bar |
| int bar(int *a) { |
| // CHECK: %[[SIZE:.*]] = call i64 @llvm.objectsize.i64 |
| // CHECK-NEXT: icmp uge i64 %[[SIZE]], 4 |
| |
| // CHECK: %[[PTRINT:.*]] = ptrtoint |
| // CHECK-NEXT: %[[MISALIGN:.*]] = and i64 %[[PTRINT]], 3 |
| // CHECK-NEXT: icmp eq i64 %[[MISALIGN]], 0 |
| |
| // CHECK: %[[ARG:.*]] = ptrtoint |
| // CHECK-NEXT: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_200]] to i8*), i64 %[[ARG]]) noreturn nounwind |
| #line 200 |
| return *a; |
| } |
| |
| // CHECK: @lsh_overflow |
| int lsh_overflow(int a, int b) { |
| // CHECK: %[[INBOUNDS:.*]] = icmp ule i32 %[[RHS:.*]], 31 |
| // CHECK-NEXT: br i1 %[[INBOUNDS]] |
| |
| // FIXME: Only emit one trap block here. |
| // CHECK: %[[ARG1:.*]] = zext |
| // CHECK-NEXT: %[[ARG2:.*]] = zext |
| // CHECK-NEXT: call void @__ubsan_handle_shift_out_of_bounds(i8* bitcast ({{.*}} @[[LINE_300_A]] to i8*), i64 %[[ARG1]], i64 %[[ARG2]]) noreturn nounwind |
| |
| // CHECK: %[[SHIFTED_OUT_WIDTH:.*]] = sub nuw nsw i32 31, %[[RHS]] |
| // CHECK-NEXT: %[[SHIFTED_OUT:.*]] = lshr i32 %[[LHS:.*]], %[[SHIFTED_OUT_WIDTH]] |
| // CHECK-NEXT: %[[NO_OVERFLOW:.*]] = icmp eq i32 %[[SHIFTED_OUT]], 0 |
| // CHECK-NEXT: br i1 %[[NO_OVERFLOW]] |
| |
| // CHECK: %[[ARG1:.*]] = zext |
| // CHECK-NEXT: %[[ARG2:.*]] = zext |
| // CHECK-NEXT: call void @__ubsan_handle_shift_out_of_bounds(i8* bitcast ({{.*}} @[[LINE_300_B]] to i8*), i64 %[[ARG1]], i64 %[[ARG2]]) noreturn nounwind |
| |
| // CHECK: %[[RET:.*]] = shl i32 %[[LHS]], %[[RHS]] |
| // CHECK-NEXT: ret i32 %[[RET]] |
| #line 300 |
| return a << b; |
| } |
| |
| // CHECK: @rsh_inbounds |
| int rsh_inbounds(int a, int b) { |
| // CHECK: %[[INBOUNDS:.*]] = icmp ult i32 %[[RHS:.*]], 32 |
| // CHECK: br i1 %[[INBOUNDS]] |
| |
| // CHECK: %[[ARG1:.*]] = zext |
| // CHECK-NEXT: %[[ARG2:.*]] = zext |
| // CHECK-NEXT: call void @__ubsan_handle_shift_out_of_bounds(i8* bitcast ({{.*}} @[[LINE_400]] to i8*), i64 %[[ARG1]], i64 %[[ARG2]]) noreturn nounwind |
| |
| // CHECK: %[[RET:.*]] = ashr i32 %[[LHS]], %[[RHS]] |
| // CHECK-NEXT: ret i32 %[[RET]] |
| #line 400 |
| return a >> b; |
| } |
| |
| // CHECK: @load |
| int load(int *p) { |
| // CHECK: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_500]] to i8*), i64 %{{.*}}) noreturn nounwind |
| #line 500 |
| return *p; |
| } |
| |
| // CHECK: @store |
| void store(int *p, int q) { |
| // CHECK: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_600]] to i8*), i64 %{{.*}}) noreturn nounwind |
| #line 600 |
| *p = q; |
| } |
| |
| struct S { int k; }; |
| |
| // CHECK: @member_access |
| int *member_access(struct S *p) { |
| // CHECK: call void @__ubsan_handle_type_mismatch(i8* bitcast ({{.*}} @[[LINE_700]] to i8*), i64 %{{.*}}) noreturn nounwind |
| #line 700 |
| return &p->k; |
| } |
| |
| // CHECK: @signed_overflow |
| int signed_overflow(int a, int b) { |
| // CHECK: %[[ARG1:.*]] = zext |
| // CHECK-NEXT: %[[ARG2:.*]] = zext |
| // CHECK-NEXT: call void @__ubsan_handle_add_overflow(i8* bitcast ({{.*}} @[[LINE_800]] to i8*), i64 %[[ARG1]], i64 %[[ARG2]]) noreturn nounwind |
| #line 800 |
| return a + b; |
| } |
| |
| // CHECK: @no_return |
| int no_return() { |
| // Reaching the end of a noreturn function is fine in C. |
| // CHECK-NOT: call |
| // CHECK-NOT: unreachable |
| // CHECK: ret i32 |
| } |
| |
| // CHECK: @vla_bound |
| void vla_bound(int n) { |
| // CHECK: icmp sgt i32 %[[PARAM:.*]], 0 |
| // |
| // CHECK: %[[ARG:.*]] = zext i32 %[[PARAM]] to i64 |
| // CHECK-NEXT: call void @__ubsan_handle_vla_bound_not_positive(i8* bitcast ({{.*}} @[[LINE_900]] to i8*), i64 %[[ARG]]) noreturn nounwind |
| #line 900 |
| int arr[n * 3]; |
| } |
| |
| // CHECK: @int_float_no_overflow |
| float int_float_no_overflow(__int128 n) { |
| // CHECK-NOT: call void @__ubsan_handle |
| return n; |
| } |
| |
| // CHECK: @int_float_overflow |
| float int_float_overflow(unsigned __int128 n) { |
| // This is 2**104. FLT_MAX is 2**128 - 2**104. |
| // CHECK: icmp ule i128 %{{.*}}, -20282409603651670423947251286016 |
| // CHECK: call void @__ubsan_handle_float_cast_overflow( |
| return n; |
| } |
| |
| // CHECK: @int_fp16_overflow |
| void int_fp16_overflow(int n, __fp16 *p) { |
| // CHECK: %[[GE:.*]] = icmp sge i32 %{{.*}}, -65504 |
| // CHECK: %[[LE:.*]] = icmp sle i32 %{{.*}}, 65504 |
| // CHECK: and i1 %[[GE]], %[[LE]] |
| // CHECK: call void @__ubsan_handle_float_cast_overflow( |
| *p = n; |
| } |
| |
| // CHECK: @float_int_overflow |
| int float_int_overflow(float f) { |
| // CHECK: %[[GE:.*]] = fcmp oge float %[[F:.*]], 0xC1E0000000000000 |
| // CHECK: %[[LE:.*]] = fcmp ole float %[[F]], 0x41DFFFFFE0000000 |
| // CHECK: and i1 %[[GE]], %[[LE]] |
| // CHECK: call void @__ubsan_handle_float_cast_overflow( |
| return f; |
| } |
| |
| // CHECK: @float_uint_overflow |
| unsigned float_uint_overflow(float f) { |
| // CHECK: %[[GE:.*]] = fcmp oge float %[[F:.*]], 0.{{0*}}e+00 |
| // CHECK: %[[LE:.*]] = fcmp ole float %[[F]], 0x41EFFFFFE0000000 |
| // CHECK: and i1 %[[GE]], %[[LE]] |
| // CHECK: call void @__ubsan_handle_float_cast_overflow( |
| return f; |
| } |
| |
| // CHECK: @fp16_char_overflow |
| signed char fp16_char_overflow(__fp16 *p) { |
| // CHECK: %[[GE:.*]] = fcmp oge float %[[F:.*]], -1.28{{0*}}e+02 |
| // CHECK: %[[LE:.*]] = fcmp ole float %[[F]], 1.27{{0*}}e+02 |
| // CHECK: and i1 %[[GE]], %[[LE]] |
| // CHECK: call void @__ubsan_handle_float_cast_overflow( |
| return *p; |
| } |
| |
| // CHECK: @float_float_overflow |
| float float_float_overflow(double f) { |
| // CHECK: %[[GE:.*]] = fcmp oge double %[[F:.*]], 0xC7EFFFFFE0000000 |
| // CHECK: %[[LE:.*]] = fcmp ole double %[[F]], 0x47EFFFFFE0000000 |
| // CHECK: and i1 %[[GE]], %[[LE]] |
| // CHECK: call void @__ubsan_handle_float_cast_overflow( |
| return f; |
| } |