diff options
Diffstat (limited to 'include/llvm/Support/Casting.h')
| -rw-r--r-- | include/llvm/Support/Casting.h | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/include/llvm/Support/Casting.h b/include/llvm/Support/Casting.h index 3f21e0f9ebc3..46bdedb04cfe 100644 --- a/include/llvm/Support/Casting.h +++ b/include/llvm/Support/Casting.h @@ -1,9 +1,8 @@ //===- llvm/Support/Casting.h - Allow flexible, checked, casts --*- C++ -*-===// // -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // @@ -144,6 +143,16 @@ template <class X, class Y> LLVM_NODISCARD inline bool isa(const Y &Val) { typename simplify_type<const Y>::SimpleType>::doit(Val); } +// isa_and_nonnull<X> - Functionally identical to isa, except that a null value +// is accepted. +// +template <class X, class Y> +LLVM_NODISCARD inline bool isa_and_nonnull(const Y &Val) { + if (!Val) + return false; + return isa<X>(Val); +} + //===----------------------------------------------------------------------===// // cast<x> Support Templates //===----------------------------------------------------------------------===// |