llvm/tools/llvm-exegesis/lib/DisassemblerHelper.cpp

   1 //===-- DisassemblerHelper.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 #include "DisassemblerHelper.h"
  10
  11 #include "llvm/MC/TargetRegistry.h"
  12
  13 namespace llvm {
  14 namespace exegesis {
  15
  16 DisassemblerHelper::DisassemblerHelper(const LLVMState &State) : State_(State) {
  17   MCTargetOptions MCOptions;
  18   const auto &TM = State.getTargetMachine();
  19   const auto &Triple = TM.getTargetTriple();
  20   AsmInfo_.reset(TM.getTarget().createMCAsmInfo(State_.getRegInfo(),
  21                                                 Triple.str(), MCOptions));
  22   InstPrinter_.reset(TM.getTarget().createMCInstPrinter(
  23       Triple, 0 /*default variant*/, *AsmInfo_, State_.getInstrInfo(),
  24       State_.getRegInfo()));
  25
  26   Context_ = std::make_unique<MCContext>(
  27       Triple, AsmInfo_.get(), &State_.getRegInfo(), &State_.getSubtargetInfo());
  28   Disasm_.reset(TM.getTarget().createMCDisassembler(State_.getSubtargetInfo(),
  29                                                     *Context_));
  30   assert(Disasm_ && "cannot create MCDisassembler. missing call to "
  31                     "InitializeXXXTargetDisassembler ?");
  32 }
  33
  34 } // namespace exegesis
  35 } // namespace llvm