| //===- AArch64GlobalISelUtils.h ----------------------------------*- C++ -*-==// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| /// \file APIs for AArch64-specific helper functions used in the GlobalISel |
| /// pipeline. |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIB_TARGET_AARCH64_GISEL_AARCH64GLOBALISELUTILS_H |
| #define LLVM_LIB_TARGET_AARCH64_GISEL_AARCH64GLOBALISELUTILS_H |
| |
| #include <cstdint> |
| |
| namespace llvm { |
| namespace AArch64GISelUtils { |
| |
| /// \returns true if \p C is a legal immediate operand for an arithmetic |
| /// instruction. |
| constexpr bool isLegalArithImmed(const uint64_t C) { |
| return (C >> 12 == 0) || ((C & 0xFFFULL) == 0 && C >> 24 == 0); |
| } |
| |
| } // namespace AArch64GISelUtils |
| } // namespace llvm |
| |
| #endif |
