1//===-- X86ShuffleDecodeConstantPool.h - X86 shuffle decode -----*-C++-*---===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// Define several functions to decode x86 specific shuffle semantics using
10// constants from the constant pool.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_LIB_TARGET_X86_X86SHUFFLEDECODECONSTANTPOOL_H
15#define LLVM_LIB_TARGET_X86_X86SHUFFLEDECODECONSTANTPOOL_H
16
17//===----------------------------------------------------------------------===//
18// Vector Mask Decoding
19//===----------------------------------------------------------------------===//
20
21namespace llvm {
22class Constant;
23template <typename T> class SmallVectorImpl;
24
25/// Decode a PSHUFB mask from an IR-level vector constant.
26void DecodePSHUFBMask(const Constant *C, unsigned Width,
27 SmallVectorImpl<int> &ShuffleMask);
28
29/// Decode a VPERMILP variable mask from an IR-level vector constant.
30void DecodeVPERMILPMask(const Constant *C, unsigned ElSize, unsigned Width,
31 SmallVectorImpl<int> &ShuffleMask);
32
33/// Decode a VPERMILP2 variable mask from an IR-level vector constant.
34void DecodeVPERMIL2PMask(const Constant *C, unsigned M2Z, unsigned ElSize,
35 unsigned Width, SmallVectorImpl<int> &ShuffleMask);
36
37/// Decode a VPPERM variable mask from an IR-level vector constant.
38void DecodeVPPERMMask(const Constant *C, unsigned Width,
39 SmallVectorImpl<int> &ShuffleMask);
40
41} // llvm namespace
42
43#endif
44