33 lines · cpp
1// RUN: %clang_cc1 -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s2// RUN: %clang_cc1 -fsanitize=alignment -fno-sanitize-recover=alignment -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_alignment_assumption" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-ANYRECOVER,CHECK-SANITIZE-NORECOVER,CHECK-SANITIZE-UNREACHABLE3// RUN: %clang_cc1 -fsanitize=alignment -fsanitize-recover=alignment -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_alignment_assumption" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-ANYRECOVER,CHECK-SANITIZE-RECOVER4// RUN: %clang_cc1 -fsanitize=alignment -fsanitize-trap=alignment -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_alignment_assumption" --check-prefixes=CHECK,CHECK-SANITIZE,CHECK-SANITIZE-TRAP,CHECK-SANITIZE-UNREACHABLE5 6// CHECK-SANITIZE-ANYRECOVER: @[[CHAR:.*]] = {{.*}} c"'char **'\00" }7// CHECK-SANITIZE-ANYRECOVER: @[[LINE_100_ALIGNMENT_ASSUMPTION:.*]] = {{.*}}, i32 100, i32 35 }, {{.*}} @[[CHAR]] }8 9void *caller(char **x) {10 // CHECK: define{{.*}} ptr @{{.*}}(ptr noundef %[[X:.*]])11 // CHECK-NEXT: entry:12 // CHECK-NEXT: %[[X_ADDR:.*]] = alloca ptr, align 813 // CHECK-NEXT: store ptr %[[X]], ptr %[[X_ADDR]], align 814 // CHECK-NEXT: %[[X_RELOADED:.*]] = load ptr, ptr %[[X_ADDR]], align 815 // CHECK-SANITIZE-NEXT: %[[PTRINT:.*]] = ptrtoint ptr %[[X_RELOADED]] to i6416 // CHECK-SANITIZE-NEXT: %[[OFFSETPTR:.*]] = sub i64 %[[PTRINT]], 4217 // CHECK-SANITIZE-NEXT: %[[MASKEDPTR:.*]] = and i64 %[[OFFSETPTR]], 429496729518 // CHECK-SANITIZE-NEXT: %[[MASKCOND:.*]] = icmp eq i64 %[[MASKEDPTR]], 019 // CHECK-SANITIZE-NEXT: br i1 %[[MASKCOND]], label %[[CONT:.*]], label %[[HANDLER_ALIGNMENT_ASSUMPTION:[^,]+]],{{.*}} !nosanitize20 // CHECK-SANITIZE: [[HANDLER_ALIGNMENT_ASSUMPTION]]:21 // CHECK-SANITIZE-ANYRECOVER-NEXT: %[[PTRINT_DUP:.*]] = ptrtoint ptr %[[X_RELOADED]] to i64, !nosanitize22 // CHECK-SANITIZE-NORECOVER-NEXT: call void @__ubsan_handle_alignment_assumption_abort(ptr @[[LINE_100_ALIGNMENT_ASSUMPTION]], i64 %[[PTRINT_DUP]], i64 4294967296, i64 42){{.*}}, !nosanitize23 // CHECK-SANITIZE-RECOVER-NEXT: call void @__ubsan_handle_alignment_assumption(ptr @[[LINE_100_ALIGNMENT_ASSUMPTION]], i64 %[[PTRINT_DUP]], i64 4294967296, i64 42){{.*}}, !nosanitize24 // CHECK-SANITIZE-TRAP-NEXT: call void @llvm.ubsantrap(i8 23){{.*}}, !nosanitize25 // CHECK-SANITIZE-UNREACHABLE-NEXT: unreachable, !nosanitize26 // CHECK-SANITIZE: [[CONT]]:27 // CHECK-NEXT: call void @llvm.assume(i1 true) [ "align"(ptr %[[X_RELOADED]], i64 4294967296, i64 42) ]28 // CHECK-NEXT: ret ptr %[[X_RELOADED]]29 // CHECK-NEXT: }30#line 10031 return __builtin_assume_aligned(x, 0x100000000, 42);32}33