1 //===-- X86ShuffleDecodeConstantPool.h - X86 shuffle decode -----*-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 using 11 // constants from the constant pool. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_LIB_TARGET_X86_X86SHUFFLEDECODECONSTANTPOOL_H 16 #define LLVM_LIB_TARGET_X86_X86SHUFFLEDECODECONSTANTPOOL_H 17 18 #include "llvm/ADT/SmallVector.h" 19 20 //===----------------------------------------------------------------------===// 21 // Vector Mask Decoding 22 //===----------------------------------------------------------------------===// 23 24 namespace llvm { 25 class Constant; 26 class MVT; 27 28 /// Decode a PSHUFB mask from an IR-level vector constant. 29 void DecodePSHUFBMask(const Constant *C, unsigned Width, 30 SmallVectorImpl<int> &ShuffleMask); 31 32 /// Decode a VPERMILP variable mask from an IR-level vector constant. 33 void DecodeVPERMILPMask(const Constant *C, unsigned ElSize, unsigned Width, 34 SmallVectorImpl<int> &ShuffleMask); 35 36 /// Decode a VPERMILP2 variable mask from an IR-level vector constant. 37 void DecodeVPERMIL2PMask(const Constant *C, unsigned MatchImm, unsigned ElSize, 38 unsigned Width, 39 SmallVectorImpl<int> &ShuffleMask); 40 41 /// Decode a VPPERM variable mask from an IR-level vector constant. 42 void DecodeVPPERMMask(const Constant *C, unsigned Width, 43 SmallVectorImpl<int> &ShuffleMask); 44 45 /// Decode a VPERM W/D/Q/PS/PD mask from an IR-level vector constant. 46 void DecodeVPERMVMask(const Constant *C, unsigned ElSize, unsigned Width, 47 SmallVectorImpl<int> &ShuffleMask); 48 49 /// Decode a VPERMT2 W/D/Q/PS/PD mask from an IR-level vector constant. 50 void DecodeVPERMV3Mask(const Constant *C, unsigned ElSize, unsigned Width, 51 SmallVectorImpl<int> &ShuffleMask); 52 53 } // llvm namespace 54 55 #endif 56