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 108
