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 20 //===----------------------------------------------------------------------===// 21 // Vector Mask Decoding 22 //===----------------------------------------------------------------------===// 23 24 namespace llvm { 25 class MVT; 26 27 enum { 28 SM_SentinelZero = -1 29 }; 30 31 void DecodeINSERTPSMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask); 32 33 // <3,1> or <6,7,2,3> 34 void DecodeMOVHLPSMask(unsigned NElts, SmallVectorImpl<int> &ShuffleMask); 35 36 // <0,2> or <0,1,4,5> 37 void DecodeMOVLHPSMask(unsigned NElts, SmallVectorImpl<int> &ShuffleMask); 38 39 void DecodePALIGNRMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask); 40 41 void DecodePSHUFMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask); 42 43 void DecodePSHUFHWMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask); 44 45 void DecodePSHUFLWMask(MVT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask); 46 47 /// DecodeSHUFPMask - This decodes the shuffle masks for shufp*. VT indicates 48 /// the type of the vector allowing it to handle different datatypes and vector 49 /// widths. 50 void DecodeSHUFPMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask); 51 52 /// DecodeUNPCKHMask - This decodes the shuffle masks for unpckhps/unpckhpd 53 /// and punpckh*. VT indicates the type of the vector allowing it to handle 54 /// different datatypes and vector widths. 55 void DecodeUNPCKHMask(MVT VT, SmallVectorImpl<int> &ShuffleMask); 56 57 /// DecodeUNPCKLMask - This decodes the shuffle masks for unpcklps/unpcklpd 58 /// and punpckl*. VT indicates the type of the vector allowing it to handle 59 /// different datatypes and vector widths. 60 void DecodeUNPCKLMask(MVT VT, SmallVectorImpl<int> &ShuffleMask); 61 62 63 void DecodeVPERM2X128Mask(MVT VT, unsigned Imm, 64 SmallVectorImpl<int> &ShuffleMask); 65 66 /// DecodeVPERMMask - this decodes the shuffle masks for VPERMQ/VPERMPD. 67 /// No VT provided since it only works on 256-bit, 4 element vectors. 68 void DecodeVPERMMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask); 69 70 } // llvm namespace 71 72 #endif 73
