1 //===- MCInstrAnalysis.cpp - InstrDesc target hooks -----------------------===//
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 "llvm/MC/MCInstrAnalysis.h"
10 
11 #include "llvm/ADT/APInt.h"
12 #include "llvm/MC/MCInst.h"
13 #include "llvm/MC/MCInstrDesc.h"
14 #include "llvm/MC/MCInstrInfo.h"
15 #include <cstdint>
16 
17 using namespace llvm;
18 
19 bool MCInstrAnalysis::clearsSuperRegisters(const MCRegisterInfo &MRI,
20                                            const MCInst &Inst,
21                                            APInt &Writes) const {
22   Writes.clearAllBits();
23   return false;
24 }
25 
26 bool MCInstrAnalysis::evaluateBranch(const MCInst &Inst, uint64_t Addr,
27                                      uint64_t Size, uint64_t &Target) const {
28   if (Inst.getNumOperands() == 0 ||
29       Info->get(Inst.getOpcode()).OpInfo[0].OperandType != MCOI::OPERAND_PCREL)
30     return false;
31 
32   int64_t Imm = Inst.getOperand(0).getImm();
33   Target = Addr+Size+Imm;
34   return true;
35 }
36 
37 Optional<uint64_t>
38 MCInstrAnalysis::evaluateMemoryOperandAddress(const MCInst &Inst, uint64_t Addr,
39                                               uint64_t Size) const {
40   return None;
41 }
42