1 //===-- X86ShuffleDecode.h - X86 shuffle decode logic -----------*-C++-*---===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Define several functions to decode x86 specific shuffle semantics into a
11 // generic vector mask.
13 //===----------------------------------------------------------------------===//
15 #ifndef X86_SHUFFLE_DECODE_H
16 #define X86_SHUFFLE_DECODE_H
18 #include "llvm/ADT/SmallVector.h"
20 //===----------------------------------------------------------------------===//
21 // Vector Mask Decoding
22 //===----------------------------------------------------------------------===//
25 class ConstantDataSequential;
32 void DecodeINSERTPSMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
35 void DecodeMOVHLPSMask(unsigned NElts, SmallVectorImpl<int> &ShuffleMask);
38 void DecodeMOVLHPSMask(unsigned NElts, SmallVectorImpl<int> &ShuffleMask);
40 void DecodePALIGNRMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
42 void DecodePSHUFMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
44 void DecodePSHUFHWMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
46 void DecodePSHUFLWMask(MVT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
48 /// DecodeSHUFPMask - This decodes the shuffle masks for shufp*. VT indicates
49 /// the type of the vector allowing it to handle different datatypes and vector
51 void DecodeSHUFPMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
53 /// DecodeUNPCKHMask - This decodes the shuffle masks for unpckhps/unpckhpd
54 /// and punpckh*. VT indicates the type of the vector allowing it to handle
55 /// different datatypes and vector widths.
56 void DecodeUNPCKHMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
58 /// DecodeUNPCKLMask - This decodes the shuffle masks for unpcklps/unpcklpd
59 /// and punpckl*. VT indicates the type of the vector allowing it to handle
60 /// different datatypes and vector widths.
61 void DecodeUNPCKLMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
63 void DecodePSHUFBMask(const ConstantDataSequential *C,
64 SmallVectorImpl<int> &ShuffleMask);
66 void DecodeVPERM2X128Mask(MVT VT, unsigned Imm,
67 SmallVectorImpl<int> &ShuffleMask);
69 /// DecodeVPERMMask - this decodes the shuffle masks for VPERMQ/VPERMPD.
70 /// No VT provided since it only works on 256-bit, 4 element vectors.
71 void DecodeVPERMMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask);