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 LLVM_LIB_TARGET_X86_UTILS_X86SHUFFLEDECODE_H
16 #define LLVM_LIB_TARGET_X86_UTILS_X86SHUFFLEDECODE_H
18 #include "llvm/ADT/SmallVector.h"
19 #include "llvm/ADT/ArrayRef.h"
21 //===----------------------------------------------------------------------===//
22 // Vector Mask Decoding
23 //===----------------------------------------------------------------------===//
28 enum { SM_SentinelUndef = -1, SM_SentinelZero = -2 };
30 void DecodeINSERTPSMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
33 void DecodeMOVHLPSMask(unsigned NElts, SmallVectorImpl<int> &ShuffleMask);
36 void DecodeMOVLHPSMask(unsigned NElts, SmallVectorImpl<int> &ShuffleMask);
38 void DecodeMOVSLDUPMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
40 void DecodeMOVSHDUPMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
42 void DecodeMOVDDUPMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
44 void DecodePSLLDQMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
46 void DecodePSRLDQMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
48 void DecodePALIGNRMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
50 void DecodePSHUFMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
52 void DecodePSHUFHWMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
54 void DecodePSHUFLWMask(MVT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
56 /// \brief Decodes a PSWAPD 3DNow! instruction.
57 void DecodePSWAPMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
59 /// DecodeSHUFPMask - This decodes the shuffle masks for shufp*. VT indicates
60 /// the type of the vector allowing it to handle different datatypes and vector
62 void DecodeSHUFPMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
64 /// DecodeUNPCKHMask - This decodes the shuffle masks for unpckhps/unpckhpd
65 /// and punpckh*. VT indicates the type of the vector allowing it to handle
66 /// different datatypes and vector widths.
67 void DecodeUNPCKHMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
69 /// DecodeUNPCKLMask - This decodes the shuffle masks for unpcklps/unpcklpd
70 /// and punpckl*. VT indicates the type of the vector allowing it to handle
71 /// different datatypes and vector widths.
72 void DecodeUNPCKLMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
74 /// \brief Decode a PSHUFB mask from a raw array of constants such as from
76 void DecodePSHUFBMask(ArrayRef<uint64_t> RawMask,
77 SmallVectorImpl<int> &ShuffleMask);
79 /// \brief Decode a BLEND immediate mask into a shuffle mask.
80 void DecodeBLENDMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
82 void DecodeVPERM2X128Mask(MVT VT, unsigned Imm,
83 SmallVectorImpl<int> &ShuffleMask);
85 /// \brief Decode a shuffle packed values at 128-bit granularity
86 /// immediate mask into a shuffle mask.
87 void decodeVSHUF64x2FamilyMask(MVT VT, unsigned Imm,
88 SmallVectorImpl<int> &ShuffleMask);
90 /// DecodeVPERMMask - this decodes the shuffle masks for VPERMQ/VPERMPD.
91 /// No VT provided since it only works on 256-bit, 4 element vectors.
92 void DecodeVPERMMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
94 /// \brief Decode a zero extension instruction as a shuffle mask.
95 void DecodeZeroExtendMask(MVT SrcVT, MVT DstVT,
96 SmallVectorImpl<int> &ShuffleMask);
98 /// \brief Decode a move lower and zero upper instruction as a shuffle mask.
99 void DecodeZeroMoveLowMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
101 /// \brief Decode a scalar float move instruction as a shuffle mask.
102 void DecodeScalarMoveMask(MVT VT, bool IsLoad,
103 SmallVectorImpl<int> &ShuffleMask);
105 /// \brief Decode a SSE4A EXTRQ instruction as a v16i8 shuffle mask.
106 void DecodeEXTRQIMask(int Len, int Idx,
107 SmallVectorImpl<int> &ShuffleMask);
109 /// \brief Decode a SSE4A INSERTQ instruction as a v16i8 shuffle mask.
110 void DecodeINSERTQIMask(int Len, int Idx,
111 SmallVectorImpl<int> &ShuffleMask);
113 /// \brief Decode a VPERM W/D/Q/PS/PD mask from a raw array of constants.
114 void DecodeVPERMVMask(ArrayRef<uint64_t> RawMask,
115 SmallVectorImpl<int> &ShuffleMask);
117 /// \brief Decode a VPERMT2 W/D/Q/PS/PD mask from a raw array of constants.
118 void DecodeVPERMV3Mask(ArrayRef<uint64_t> RawMask,
119 SmallVectorImpl<int> &ShuffleMask);