contrib/llvm/lib/Target/X86/Utils/X86ShuffleDecode.h

   1 //===-- X86ShuffleDecode.h - X86 shuffle decode logic -----------*-C++-*---===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // Define several functions to decode x86 specific shuffle semantics into a
  11 // generic vector mask.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #ifndef X86_SHUFFLE_DECODE_H
  16 #define X86_SHUFFLE_DECODE_H
  17
  18 #include "llvm/ADT/SmallVector.h"
  19 #include "llvm/CodeGen/ValueTypes.h"
  20
  21 //===----------------------------------------------------------------------===//
  22 //  Vector Mask Decoding
  23 //===----------------------------------------------------------------------===//
  24
  25 namespace llvm {
  26 enum {
  27   SM_SentinelZero = ~0U
  28 };
  29
  30 void DecodeINSERTPSMask(unsigned Imm, SmallVectorImpl<unsigned> &ShuffleMask);
  31
  32 // <3,1> or <6,7,2,3>
  33 void DecodeMOVHLPSMask(unsigned NElts,
  34                        SmallVectorImpl<unsigned> &ShuffleMask);
  35
  36 // <0,2> or <0,1,4,5>
  37 void DecodeMOVLHPSMask(unsigned NElts,
  38                        SmallVectorImpl<unsigned> &ShuffleMask);
  39
  40 void DecodePSHUFMask(unsigned NElts, unsigned Imm,
  41                      SmallVectorImpl<unsigned> &ShuffleMask);
  42
  43 void DecodePSHUFHWMask(unsigned Imm,
  44                        SmallVectorImpl<unsigned> &ShuffleMask);
  45
  46 void DecodePSHUFLWMask(unsigned Imm,
  47                        SmallVectorImpl<unsigned> &ShuffleMask);
  48
  49 void DecodePUNPCKLBWMask(unsigned NElts,
  50                          SmallVectorImpl<unsigned> &ShuffleMask);
  51
  52 void DecodePUNPCKLWDMask(unsigned NElts,
  53                          SmallVectorImpl<unsigned> &ShuffleMask);
  54
  55 void DecodePUNPCKLDQMask(unsigned NElts,
  56                          SmallVectorImpl<unsigned> &ShuffleMask);
  57
  58 void DecodePUNPCKLQDQMask(unsigned NElts,
  59                           SmallVectorImpl<unsigned> &ShuffleMask);
  60
  61 void DecodePUNPCKLMask(EVT VT,
  62                        SmallVectorImpl<unsigned> &ShuffleMask);
  63
  64 void DecodePUNPCKHMask(unsigned NElts,
  65                        SmallVectorImpl<unsigned> &ShuffleMask);
  66
  67 void DecodeSHUFPSMask(unsigned NElts, unsigned Imm,
  68                       SmallVectorImpl<unsigned> &ShuffleMask);
  69
  70 void DecodeUNPCKHPMask(unsigned NElts,
  71                        SmallVectorImpl<unsigned> &ShuffleMask);
  72
  73 void DecodeUNPCKLPSMask(unsigned NElts,
  74                         SmallVectorImpl<unsigned> &ShuffleMask);
  75
  76 void DecodeUNPCKLPDMask(unsigned NElts,
  77                         SmallVectorImpl<unsigned> &ShuffleMask);
  78
  79 /// DecodeUNPCKLPMask - This decodes the shuffle masks for unpcklps/unpcklpd
  80 /// etc.  VT indicates the type of the vector allowing it to handle different
  81 /// datatypes and vector widths.
  82 void DecodeUNPCKLPMask(EVT VT,
  83                        SmallVectorImpl<unsigned> &ShuffleMask);
  84
  85
  86 // DecodeVPERMILPSMask - Decodes VPERMILPS permutes for any 128-bit 32-bit
  87 // elements. For 256-bit vectors, it's considered as two 128 lanes, the
  88 // referenced elements can't cross lanes and the mask of the first lane must
  89 // be the same of the second.
  90 void DecodeVPERMILPSMask(unsigned NElts, unsigned Imm,
  91                         SmallVectorImpl<unsigned> &ShuffleMask);
  92
  93 // DecodeVPERMILPDMask - Decodes VPERMILPD permutes for any 128-bit 64-bit
  94 // elements. For 256-bit vectors, it's considered as two 128 lanes, the
  95 // referenced elements can't cross lanes but the mask of the first lane can
  96 // be the different of the second (not like VPERMILPS).
  97 void DecodeVPERMILPDMask(unsigned NElts, unsigned Imm,
  98                         SmallVectorImpl<unsigned> &ShuffleMask);
  99
 100 void DecodeVPERM2F128Mask(unsigned Imm,
 101                           SmallVectorImpl<unsigned> &ShuffleMask);
 102 void DecodeVPERM2F128Mask(EVT VT, unsigned Imm,
 103                           SmallVectorImpl<unsigned> &ShuffleMask);
 104
 105 } // llvm namespace
 106
 107 #endif