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 //===----------------------------------------------------------------------===//
31 void DecodeINSERTPSMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
34 void DecodeMOVHLPSMask(unsigned NElts, SmallVectorImpl<int> &ShuffleMask);
37 void DecodeMOVLHPSMask(unsigned NElts, SmallVectorImpl<int> &ShuffleMask);
39 void DecodePALIGNRMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
41 void DecodePSHUFMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
43 void DecodePSHUFHWMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
45 void DecodePSHUFLWMask(MVT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
47 /// DecodeSHUFPMask - This decodes the shuffle masks for shufp*. VT indicates
48 /// the type of the vector allowing it to handle different datatypes and vector
50 void DecodeSHUFPMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
52 /// DecodeUNPCKHMask - This decodes the shuffle masks for unpckhps/unpckhpd
53 /// and punpckh*. VT indicates the type of the vector allowing it to handle
54 /// different datatypes and vector widths.
55 void DecodeUNPCKHMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
57 /// DecodeUNPCKLMask - This decodes the shuffle masks for unpcklps/unpcklpd
58 /// and punpckl*. VT indicates the type of the vector allowing it to handle
59 /// different datatypes and vector widths.
60 void DecodeUNPCKLMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
63 void DecodeVPERM2X128Mask(MVT VT, unsigned Imm,
64 SmallVectorImpl<int> &ShuffleMask);
66 /// DecodeVPERMMask - this decodes the shuffle masks for VPERMQ/VPERMPD.
67 /// No VT provided since it only works on 256-bit, 4 element vectors.
68 void DecodeVPERMMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask);