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 LLVM_LIB_TARGET_X86_UTILS_X86SHUFFLEDECODE_H 16 #define LLVM_LIB_TARGET_X86_UTILS_X86SHUFFLEDECODE_H 17 18 #include "llvm/ADT/SmallVector.h" 19 #include "llvm/ADT/ArrayRef.h" 20 21 //===----------------------------------------------------------------------===// 22 // Vector Mask Decoding 23 //===----------------------------------------------------------------------===// 24 25 namespace llvm { 26 class Constant; 27 class MVT; 28 29 enum { SM_SentinelUndef = -1, SM_SentinelZero = -2 }; 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 DecodeMOVSLDUPMask(MVT VT, SmallVectorImpl<int> &ShuffleMask); 40 41 void DecodeMOVSHDUPMask(MVT VT, SmallVectorImpl<int> &ShuffleMask); 42 43 void DecodePSLLDQMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask); 44 45 void DecodePSRLDQMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask); 46 47 void DecodePALIGNRMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask); 48 49 void DecodePSHUFMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask); 50 51 void DecodePSHUFHWMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask); 52 53 void DecodePSHUFLWMask(MVT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask); 54 55 /// DecodeSHUFPMask - This decodes the shuffle masks for shufp*. VT indicates 56 /// the type of the vector allowing it to handle different datatypes and vector 57 /// widths. 58 void DecodeSHUFPMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask); 59 60 /// DecodeUNPCKHMask - This decodes the shuffle masks for unpckhps/unpckhpd 61 /// and punpckh*. VT indicates the type of the vector allowing it to handle 62 /// different datatypes and vector widths. 63 void DecodeUNPCKHMask(MVT VT, SmallVectorImpl<int> &ShuffleMask); 64 65 /// DecodeUNPCKLMask - This decodes the shuffle masks for unpcklps/unpcklpd 66 /// and punpckl*. VT indicates the type of the vector allowing it to handle 67 /// different datatypes and vector widths. 68 void DecodeUNPCKLMask(MVT VT, SmallVectorImpl<int> &ShuffleMask); 69 70 /// \brief Decode a PSHUFB mask from an IR-level vector constant. 71 void DecodePSHUFBMask(const Constant *C, SmallVectorImpl<int> &ShuffleMask); 72 73 /// \brief Decode a PSHUFB mask from a raw array of constants such as from 74 /// BUILD_VECTOR. 75 void DecodePSHUFBMask(ArrayRef<uint64_t> RawMask, 76 SmallVectorImpl<int> &ShuffleMask); 77 78 /// \brief Decode a BLEND immediate mask into a shuffle mask. 79 void DecodeBLENDMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask); 80 81 void DecodeVPERM2X128Mask(MVT VT, unsigned Imm, 82 SmallVectorImpl<int> &ShuffleMask); 83 84 /// DecodeVPERMMask - this decodes the shuffle masks for VPERMQ/VPERMPD. 85 /// No VT provided since it only works on 256-bit, 4 element vectors. 86 void DecodeVPERMMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask); 87 88 /// \brief Decode a VPERMILP variable mask from an IR-level vector constant. 89 void DecodeVPERMILPMask(const Constant *C, SmallVectorImpl<int> &ShuffleMask); 90 91 } // llvm namespace 92 93 #endif 94