CodeEmitter.cpp revision 360784 
1//===--------------------- CodeEmitter.cpp ----------------------*- 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 implements the CodeEmitter API.
10//
11//===----------------------------------------------------------------------===//
12
13#include "llvm/MCA/CodeEmitter.h"
14
15namespace llvm {
16namespace mca {
17
18CodeEmitter::EncodingInfo
19CodeEmitter::getOrCreateEncodingInfo(unsigned MCID) {
20  EncodingInfo &EI = Encodings[MCID];
21  if (EI.second)
22    return EI;
23
24  SmallVector<llvm::MCFixup, 2> Fixups;
25  const MCInst &Inst = Sequence[MCID];
26  MCInst Relaxed(Sequence[MCID]);
27  if (MAB.mayNeedRelaxation(Inst, STI))
28    MAB.relaxInstruction(Inst, STI, Relaxed);
29
30  EI.first = Code.size();
31  MCE.encodeInstruction(Relaxed, VecOS, Fixups, STI);
32  EI.second = Code.size() - EI.first;
33  return EI;
34}
35
36} // namespace mca
37} // namespace llvm
38