1//===-- X86InstrFoldTables.h - X86 Instruction Folding Tables ---*- 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// This file contains the interface to query the X86 memory folding tables.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_X86_X86INSTRFOLDTABLES_H
14#define LLVM_LIB_TARGET_X86_X86INSTRFOLDTABLES_H
15
16#include <cstdint>
17#include "llvm/Support/X86FoldTablesUtils.h"
18
19namespace llvm {
20
21// This struct is used for both the folding and unfold tables. They KeyOp
22// is used to determine the sorting order.
23struct X86FoldTableEntry {
24 unsigned KeyOp;
25 unsigned DstOp;
26 uint16_t Flags;
27
28 bool operator<(const X86FoldTableEntry &RHS) const {
29 return KeyOp < RHS.KeyOp;
30 }
31 bool operator==(const X86FoldTableEntry &RHS) const {
32 return KeyOp == RHS.KeyOp;
33 }
34 friend bool operator<(const X86FoldTableEntry &TE, unsigned Opcode) {
35 return TE.KeyOp < Opcode;
36 }
37};
38
39// Look up the memory folding table entry for folding a load and a store into
40// operand 0.
41const X86FoldTableEntry *lookupTwoAddrFoldTable(unsigned RegOp);
42
43// Look up the memory folding table entry for folding a load or store with
44// operand OpNum.
45const X86FoldTableEntry *lookupFoldTable(unsigned RegOp, unsigned OpNum);
46
47// Look up the broadcast folding table entry for folding a broadcast with
48// operand OpNum.
49const X86FoldTableEntry *lookupBroadcastFoldTable(unsigned RegOp,
50 unsigned OpNum);
51
52// Look up the memory unfolding table entry for this instruction.
53const X86FoldTableEntry *lookupUnfoldTable(unsigned MemOp);
54
55// Look up the broadcast folding table entry for this instruction from
56// the regular memory instruction.
57const X86FoldTableEntry *lookupBroadcastFoldTableBySize(unsigned MemOp,
58 unsigned BroadcastBits);
59
60bool matchBroadcastSize(const X86FoldTableEntry &Entry, unsigned BroadcastBits);
61} // namespace llvm
62
63#endif
64