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