lib/Target/X86/X86ShuffleDecodeConstantPool.h

   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 #include "llvm/ADT/SmallVector.h"
  18
  19 //===----------------------------------------------------------------------===//
  20 //  Vector Mask Decoding
  21 //===----------------------------------------------------------------------===//
  22
  23 namespace llvm {
  24 class Constant;
  25 class MVT;
  26
  27 /// Decode a PSHUFB mask from an IR-level vector constant.
  28 void DecodePSHUFBMask(const Constant *C, unsigned Width,
  29                       SmallVectorImpl<int> &ShuffleMask);
  30
  31 /// Decode a VPERMILP variable mask from an IR-level vector constant.
  32 void DecodeVPERMILPMask(const Constant *C, unsigned ElSize, unsigned Width,
  33                         SmallVectorImpl<int> &ShuffleMask);
  34
  35 /// Decode a VPERMILP2 variable mask from an IR-level vector constant.
  36 void DecodeVPERMIL2PMask(const Constant *C, unsigned MatchImm, unsigned ElSize,
  37                          unsigned Width,
  38                          SmallVectorImpl<int> &ShuffleMask);
  39
  40 /// Decode a VPPERM variable mask from an IR-level vector constant.
  41 void DecodeVPPERMMask(const Constant *C, unsigned Width,
  42                       SmallVectorImpl<int> &ShuffleMask);
  43
  44 /// Decode a VPERM W/D/Q/PS/PD mask from an IR-level vector constant.
  45 void DecodeVPERMVMask(const Constant *C, unsigned ElSize, unsigned Width,
  46                       SmallVectorImpl<int> &ShuffleMask);
  47
  48 /// Decode a VPERMT2 W/D/Q/PS/PD mask from an IR-level vector constant.
  49 void DecodeVPERMV3Mask(const Constant *C, unsigned ElSize, unsigned Width,
  50                        SmallVectorImpl<int> &ShuffleMask);
  51
  52 } // llvm namespace
  53
  54 #endif