LLVM  9.0.0svn
X86ShuffleDecodeConstantPool.h
Go to the documentation of this file.
1 //===-- X86ShuffleDecodeConstantPool.h - X86 shuffle decode -----*-C++-*---===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // Define several functions to decode x86 specific shuffle semantics using
10 // constants from the constant pool.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_LIB_TARGET_X86_X86SHUFFLEDECODECONSTANTPOOL_H
15 #define LLVM_LIB_TARGET_X86_X86SHUFFLEDECODECONSTANTPOOL_H
16 
17 #include "llvm/ADT/SmallVector.h"
18 
19 //===----------------------------------------------------------------------===//
20 // Vector Mask Decoding
21 //===----------------------------------------------------------------------===//
22 
23 namespace llvm {
24 class Constant;
25 class MVT;
26 
27 /// Decode a PSHUFB mask from an IR-level vector constant.
28 void DecodePSHUFBMask(const Constant *C, unsigned Width,
29  SmallVectorImpl<int> &ShuffleMask);
30 
31 /// Decode a VPERMILP variable mask from an IR-level vector constant.
32 void DecodeVPERMILPMask(const Constant *C, unsigned ElSize, unsigned Width,
33  SmallVectorImpl<int> &ShuffleMask);
34 
35 /// Decode a VPERMILP2 variable mask from an IR-level vector constant.
36 void DecodeVPERMIL2PMask(const Constant *C, unsigned MatchImm, unsigned ElSize,
37  unsigned Width,
38  SmallVectorImpl<int> &ShuffleMask);
39 
40 /// Decode a VPPERM variable mask from an IR-level vector constant.
41 void DecodeVPPERMMask(const Constant *C, unsigned Width,
42  SmallVectorImpl<int> &ShuffleMask);
43 
44 /// Decode a VPERM W/D/Q/PS/PD mask from an IR-level vector constant.
45 void DecodeVPERMVMask(const Constant *C, unsigned ElSize, unsigned Width,
46  SmallVectorImpl<int> &ShuffleMask);
47 
48 /// Decode a VPERMT2 W/D/Q/PS/PD mask from an IR-level vector constant.
49 void DecodeVPERMV3Mask(const Constant *C, unsigned ElSize, unsigned Width,
50  SmallVectorImpl<int> &ShuffleMask);
51 
52 } // llvm namespace
53 
54 #endif
uint64_t CallInst * C
This class represents lattice values for constants.
Definition: AllocatorList.h:23
void DecodeVPPERMMask(ArrayRef< uint64_t > RawMask, const APInt &UndefElts, SmallVectorImpl< int > &ShuffleMask)
Decode a VPPERM mask from a raw array of constants such as from BUILD_VECTOR.
void DecodeVPERMV3Mask(ArrayRef< uint64_t > RawMask, const APInt &UndefElts, SmallVectorImpl< int > &ShuffleMask)
Decode a VPERMT2 W/D/Q/PS/PD mask from a raw array of constants.
void DecodeVPERMILPMask(unsigned NumElts, unsigned ScalarBits, ArrayRef< uint64_t > RawMask, const APInt &UndefElts, SmallVectorImpl< int > &ShuffleMask)
Decode a VPERMILPD/VPERMILPS variable mask from a raw array of constants.
void DecodeVPERMIL2PMask(unsigned NumElts, unsigned ScalarBits, unsigned M2Z, ArrayRef< uint64_t > RawMask, const APInt &UndefElts, SmallVectorImpl< int > &ShuffleMask)
Decode a VPERMIL2PD/VPERMIL2PS variable mask from a raw array of constants.
void DecodeVPERMVMask(ArrayRef< uint64_t > RawMask, const APInt &UndefElts, SmallVectorImpl< int > &ShuffleMask)
Decode a VPERM W/D/Q/PS/PD mask from a raw array of constants.
void DecodePSHUFBMask(ArrayRef< uint64_t > RawMask, const APInt &UndefElts, SmallVectorImpl< int > &ShuffleMask)
Decode a PSHUFB mask from a raw array of constants such as from BUILD_VECTOR.