LLVM  3.7.0
X86ShuffleDecode.h
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1 //===-- X86ShuffleDecode.h - X86 shuffle decode logic -----------*-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 into a
11 // generic vector mask.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #ifndef LLVM_LIB_TARGET_X86_UTILS_X86SHUFFLEDECODE_H
16 #define LLVM_LIB_TARGET_X86_UTILS_X86SHUFFLEDECODE_H
17 
18 #include "llvm/ADT/SmallVector.h"
19 #include "llvm/ADT/ArrayRef.h"
20 
21 //===----------------------------------------------------------------------===//
22 // Vector Mask Decoding
23 //===----------------------------------------------------------------------===//
24 
25 namespace llvm {
26 class Constant;
27 class MVT;
28 
29 enum { SM_SentinelUndef = -1, SM_SentinelZero = -2 };
30 
31 void DecodeINSERTPSMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
32 
33 // <3,1> or <6,7,2,3>
34 void DecodeMOVHLPSMask(unsigned NElts, SmallVectorImpl<int> &ShuffleMask);
35 
36 // <0,2> or <0,1,4,5>
37 void DecodeMOVLHPSMask(unsigned NElts, SmallVectorImpl<int> &ShuffleMask);
38 
39 void DecodeMOVSLDUPMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
40 
41 void DecodeMOVSHDUPMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
42 
43 void DecodeMOVDDUPMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
44 
45 void DecodePSLLDQMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
46 
47 void DecodePSRLDQMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
48 
49 void DecodePALIGNRMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
50 
51 void DecodePSHUFMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
52 
53 void DecodePSHUFHWMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
54 
55 void DecodePSHUFLWMask(MVT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
56 
57 /// DecodeSHUFPMask - This decodes the shuffle masks for shufp*. VT indicates
58 /// the type of the vector allowing it to handle different datatypes and vector
59 /// widths.
60 void DecodeSHUFPMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
61 
62 /// DecodeUNPCKHMask - This decodes the shuffle masks for unpckhps/unpckhpd
63 /// and punpckh*. VT indicates the type of the vector allowing it to handle
64 /// different datatypes and vector widths.
65 void DecodeUNPCKHMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
66 
67 /// DecodeUNPCKLMask - This decodes the shuffle masks for unpcklps/unpcklpd
68 /// and punpckl*. VT indicates the type of the vector allowing it to handle
69 /// different datatypes and vector widths.
70 void DecodeUNPCKLMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
71 
72 /// \brief Decode a PSHUFB mask from an IR-level vector constant.
73 void DecodePSHUFBMask(const Constant *C, SmallVectorImpl<int> &ShuffleMask);
74 
75 /// \brief Decode a PSHUFB mask from a raw array of constants such as from
76 /// BUILD_VECTOR.
77 void DecodePSHUFBMask(ArrayRef<uint64_t> RawMask,
78  SmallVectorImpl<int> &ShuffleMask);
79 
80 /// \brief Decode a BLEND immediate mask into a shuffle mask.
81 void DecodeBLENDMask(MVT VT, unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
82 
83 void DecodeVPERM2X128Mask(MVT VT, unsigned Imm,
84  SmallVectorImpl<int> &ShuffleMask);
85 
86 /// DecodeVPERMMask - this decodes the shuffle masks for VPERMQ/VPERMPD.
87 /// No VT provided since it only works on 256-bit, 4 element vectors.
88 void DecodeVPERMMask(unsigned Imm, SmallVectorImpl<int> &ShuffleMask);
89 
90 /// \brief Decode a VPERMILP variable mask from an IR-level vector constant.
91 void DecodeVPERMILPMask(const Constant *C, SmallVectorImpl<int> &ShuffleMask);
92 
93 /// \brief Decode a zero extension instruction as a shuffle mask.
94 void DecodeZeroExtendMask(MVT SrcVT, MVT DstVT,
95  SmallVectorImpl<int> &ShuffleMask);
96 
97 /// \brief Decode a move lower and zero upper instruction as a shuffle mask.
98 void DecodeZeroMoveLowMask(MVT VT, SmallVectorImpl<int> &ShuffleMask);
99 
100 /// \brief Decode a scalar float move instruction as a shuffle mask.
101 void DecodeScalarMoveMask(MVT VT, bool IsLoad,
102  SmallVectorImpl<int> &ShuffleMask);
103 
104 /// \brief Decode a SSE4A EXTRQ instruction as a v16i8 shuffle mask.
105 void DecodeEXTRQIMask(int Len, int Idx,
106  SmallVectorImpl<int> &ShuffleMask);
107 
108 /// \brief Decode a SSE4A INSERTQ instruction as a v16i8 shuffle mask.
109 void DecodeINSERTQIMask(int Len, int Idx,
110  SmallVectorImpl<int> &ShuffleMask);
111 } // llvm namespace
112 
113 #endif
void DecodePSLLDQMask(MVT VT, unsigned Imm, SmallVectorImpl< int > &ShuffleMask)
void DecodeScalarMoveMask(MVT VT, bool IsLoad, SmallVectorImpl< int > &Mask)
Decode a scalar float move instruction as a shuffle mask.
void DecodePALIGNRMask(MVT VT, unsigned Imm, SmallVectorImpl< int > &ShuffleMask)
void DecodeUNPCKLMask(MVT VT, SmallVectorImpl< int > &ShuffleMask)
DecodeUNPCKLMask - This decodes the shuffle masks for unpcklps/unpcklpd and punpckl*.
void DecodeMOVDDUPMask(MVT VT, SmallVectorImpl< int > &ShuffleMask)
void DecodeEXTRQIMask(int Len, int Idx, SmallVectorImpl< int > &ShuffleMask)
Decode a SSE4A EXTRQ instruction as a v16i8 shuffle mask.
void DecodeINSERTQIMask(int Len, int Idx, SmallVectorImpl< int > &ShuffleMask)
Decode a SSE4A INSERTQ instruction as a v16i8 shuffle mask.
void DecodeZeroMoveLowMask(MVT VT, SmallVectorImpl< int > &ShuffleMask)
Decode a move lower and zero upper instruction as a shuffle mask.
void DecodeBLENDMask(MVT VT, unsigned Imm, SmallVectorImpl< int > &ShuffleMask)
Decode a BLEND immediate mask into a shuffle mask.
void DecodeMOVSHDUPMask(MVT VT, SmallVectorImpl< int > &ShuffleMask)
void DecodeMOVLHPSMask(unsigned NElts, SmallVectorImpl< int > &ShuffleMask)
void DecodeSHUFPMask(MVT VT, unsigned Imm, SmallVectorImpl< int > &ShuffleMask)
DecodeSHUFPMask - This decodes the shuffle masks for shufp*.
void DecodePSHUFBMask(const Constant *C, SmallVectorImpl< int > &ShuffleMask)
Decode a PSHUFB mask from an IR-level vector constant.
void DecodePSHUFLWMask(MVT VT, unsigned Imm, SmallVectorImpl< int > &ShuffleMask)
void DecodeINSERTPSMask(unsigned Imm, SmallVectorImpl< int > &ShuffleMask)
void DecodePSRLDQMask(MVT VT, unsigned Imm, SmallVectorImpl< int > &ShuffleMask)
void DecodeMOVSLDUPMask(MVT VT, SmallVectorImpl< int > &ShuffleMask)
void DecodePSHUFMask(MVT VT, unsigned Imm, SmallVectorImpl< int > &ShuffleMask)
DecodePSHUFMask - This decodes the shuffle masks for pshufd, and vpermilp*.
void DecodeUNPCKHMask(MVT VT, SmallVectorImpl< int > &ShuffleMask)
DecodeUNPCKHMask - This decodes the shuffle masks for unpckhps/unpckhpd and punpckh*.
void DecodeVPERM2X128Mask(MVT VT, unsigned Imm, SmallVectorImpl< int > &ShuffleMask)
void DecodeVPERMILPMask(const Constant *C, SmallVectorImpl< int > &ShuffleMask)
Decode a VPERMILP variable mask from an IR-level vector constant.
void DecodePSHUFHWMask(MVT VT, unsigned Imm, SmallVectorImpl< int > &ShuffleMask)
void DecodeZeroExtendMask(MVT SrcVT, MVT DstVT, SmallVectorImpl< int > &Mask)
Decode a zero extension instruction as a shuffle mask.
void DecodeVPERMMask(unsigned Imm, SmallVectorImpl< int > &ShuffleMask)
DecodeVPERMMask - this decodes the shuffle masks for VPERMQ/VPERMPD.
C - The default llvm calling convention, compatible with C.
Definition: CallingConv.h:34
void DecodeMOVHLPSMask(unsigned NElts, SmallVectorImpl< int > &ShuffleMask)