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 //===----------------------------------------------------------------------===//
29 enum { SM_SentinelUndef = -1, SM_SentinelZero = -2 };
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 DecodeMOVSLDUPMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
41 void DecodeMOVSHDUPMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
43 void DecodeMOVDDUPMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
45 void DecodePSLLDQMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
47 void DecodePSRLDQMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
49 void DecodePALIGNRMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
51 void DecodePSHUFMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
53 void DecodePSHUFHWMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
55 void DecodePSHUFLWMask(MVT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
57 /// \brief Decodes a PSWAPD 3DNow! instruction.
58 void DecodePSWAPMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
60 /// DecodeSHUFPMask - This decodes the shuffle masks for shufp*. VT indicates
61 /// the type of the vector allowing it to handle different datatypes and vector
63 void DecodeSHUFPMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
65 /// DecodeUNPCKHMask - This decodes the shuffle masks for unpckhps/unpckhpd
66 /// and punpckh*. VT indicates the type of the vector allowing it to handle
67 /// different datatypes and vector widths.
68 void DecodeUNPCKHMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
70 /// DecodeUNPCKLMask - This decodes the shuffle masks for unpcklps/unpcklpd
71 /// and punpckl*. VT indicates the type of the vector allowing it to handle
72 /// different datatypes and vector widths.
73 void DecodeUNPCKLMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
75 /// \brief Decode a PSHUFB mask from an IR-level vector constant.
76 void DecodePSHUFBMask(const Constant *C, SmallVectorImpl<int> &ShuffleMask);
78 /// \brief Decode a PSHUFB mask from a raw array of constants such as from
80 void DecodePSHUFBMask(ArrayRef<uint64_t> RawMask,
81 SmallVectorImpl<int> &ShuffleMask);
83 /// \brief Decode a BLEND immediate mask into a shuffle mask.
84 void DecodeBLENDMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
86 void DecodeVPERM2X128Mask(MVT VT, unsigned Imm,
87 SmallVectorImpl<int> &ShuffleMask);
89 /// \brief Decode a shuffle packed values at 128-bit granularity
90 /// immediate mask into a shuffle mask.
91 void decodeVSHUF64x2FamilyMask(MVT VT, unsigned Imm,
92 SmallVectorImpl<int> &ShuffleMask);
94 /// DecodeVPERMMask - this decodes the shuffle masks for VPERMQ/VPERMPD.
95 /// No VT provided since it only works on 256-bit, 4 element vectors.
96 void DecodeVPERMMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
98 /// \brief Decode a VPERMILP variable mask from an IR-level vector constant.
99 void DecodeVPERMILPMask(const Constant *C, unsigned ElSize,
100 SmallVectorImpl<int> &ShuffleMask);
102 /// \brief Decode a zero extension instruction as a shuffle mask.
103 void DecodeZeroExtendMask(MVT SrcVT, MVT DstVT,
104 SmallVectorImpl<int> &ShuffleMask);
106 /// \brief Decode a move lower and zero upper instruction as a shuffle mask.
107 void DecodeZeroMoveLowMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
109 /// \brief Decode a scalar float move instruction as a shuffle mask.
110 void DecodeScalarMoveMask(MVT VT, bool IsLoad,
111 SmallVectorImpl<int> &ShuffleMask);
113 /// \brief Decode a SSE4A EXTRQ instruction as a v16i8 shuffle mask.
114 void DecodeEXTRQIMask(int Len, int Idx,
115 SmallVectorImpl<int> &ShuffleMask);
117 /// \brief Decode a SSE4A INSERTQ instruction as a v16i8 shuffle mask.
118 void DecodeINSERTQIMask(int Len, int Idx,
119 SmallVectorImpl<int> &ShuffleMask);
121 /// \brief Decode a VPERM W/D/Q/PS/PD mask from an IR-level vector constant.
122 void DecodeVPERMVMask(const Constant *C, MVT VT,
123 SmallVectorImpl<int> &ShuffleMask);
125 /// \brief Decode a VPERM W/D/Q/PS/PD mask from a raw array of constants.
126 void DecodeVPERMVMask(ArrayRef<uint64_t> RawMask,
127 SmallVectorImpl<int> &ShuffleMask);
129 /// \brief Decode a VPERMT2 W/D/Q/PS/PD mask from an IR-level vector constant.
130 void DecodeVPERMV3Mask(const Constant *C, MVT VT,
131 SmallVectorImpl<int> &ShuffleMask);
133 /// \brief Decode a VPERMT2 W/D/Q/PS/PD mask from a raw array of constants.
134 void DecodeVPERMV3Mask(ArrayRef<uint64_t> RawMask,
135 SmallVectorImpl<int> &ShuffleMask);