LLVM 20.0.0git
X86ShuffleDecodeConstantPool.h
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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//===----------------------------------------------------------------------===//
18// Vector Mask Decoding
19//===----------------------------------------------------------------------===//
20
21namespace llvm {
22class Constant;
23template <typename T> class SmallVectorImpl;
24
25/// Decode a PSHUFB mask from an IR-level vector constant.
26void DecodePSHUFBMask(const Constant *C, unsigned Width,
27 SmallVectorImpl<int> &ShuffleMask);
28
29/// Decode a VPERMILP variable mask from an IR-level vector constant.
30void DecodeVPERMILPMask(const Constant *C, unsigned ElSize, unsigned Width,
31 SmallVectorImpl<int> &ShuffleMask);
32
33/// Decode a VPERMILP2 variable mask from an IR-level vector constant.
34void DecodeVPERMIL2PMask(const Constant *C, unsigned M2Z, unsigned ElSize,
35 unsigned Width, SmallVectorImpl<int> &ShuffleMask);
36
37/// Decode a VPPERM variable mask from an IR-level vector constant.
38void DecodeVPPERMMask(const Constant *C, unsigned Width,
39 SmallVectorImpl<int> &ShuffleMask);
40
41} // llvm namespace
42
43#endif
@ C
The default llvm calling convention, compatible with C.
Definition: CallingConv.h:34
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
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 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 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.