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//===-- X86InstrFoldTables.h - X86 Instruction Folding Tables ---*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file contains the interface to query the X86 memory folding tables.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_X86_X86INSTRFOLDTABLES_H
#define LLVM_LIB_TARGET_X86_X86INSTRFOLDTABLES_H
#include <cstdint>
#include "llvm/Support/X86FoldTablesUtils.h"
namespace llvm {
// This struct is used for both the folding and unfold tables. They KeyOp
// is used to determine the sorting order.
struct X86FoldTableEntry {
unsigned KeyOp;
unsigned DstOp;
uint16_t Flags;
bool operator<(const X86FoldTableEntry &RHS) const {
return KeyOp < RHS.KeyOp;
}
bool operator==(const X86FoldTableEntry &RHS) const {
return KeyOp == RHS.KeyOp;
}
friend bool operator<(const X86FoldTableEntry &TE, unsigned Opcode) {
return TE.KeyOp < Opcode;
}
};
// Look up the memory folding table entry for folding a load and a store into
// operand 0.
const X86FoldTableEntry *lookupTwoAddrFoldTable(unsigned RegOp);
// Look up the memory folding table entry for folding a load or store with
// operand OpNum.
const X86FoldTableEntry *lookupFoldTable(unsigned RegOp, unsigned OpNum);
// Look up the memory unfolding table entry for this instruction.
const X86FoldTableEntry *lookupUnfoldTable(unsigned MemOp);
// Look up the broadcast folding table entry for this instruction from
// the regular memory instruction.
const X86FoldTableEntry *lookupBroadcastFoldTable(unsigned MemOp,
unsigned BroadcastBits);
} // namespace llvm
#endif
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