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, SmallVectorImpl<int> &ShuffleMask); 30 31 /// Decode a VPERMILP variable mask from an IR-level vector constant. 32 void DecodeVPERMILPMask(const Constant *C, unsigned ElSize, 33 SmallVectorImpl<int> &ShuffleMask); 34 35 /// Decode a VPERMILP2 variable mask from an IR-level vector constant. 36 void DecodeVPERMIL2PMask(const Constant *C, unsigned MatchImm, unsigned ElSize, 37 SmallVectorImpl<int> &ShuffleMask); 38 39 /// Decode a VPPERM variable mask from an IR-level vector constant. 40 void DecodeVPPERMMask(const Constant *C, SmallVectorImpl<int> &ShuffleMask); 41 42 /// Decode a VPERM W/D/Q/PS/PD mask from an IR-level vector constant. 43 void DecodeVPERMVMask(const Constant *C, MVT VT, 44 SmallVectorImpl<int> &ShuffleMask); 45 46 /// Decode a VPERMT2 W/D/Q/PS/PD mask from an IR-level vector constant. 47 void DecodeVPERMV3Mask(const Constant *C, MVT VT, 48 SmallVectorImpl<int> &ShuffleMask); 49 50 } // llvm namespace 51 52 #endif 53
