1//===-- WebAssemblyDebugValueManager.cpp - WebAssembly DebugValue Manager -===//
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/// \file
10/// This file implements the manager for MachineInstr DebugValues.
11///
12//===----------------------------------------------------------------------===//
13
14#include "WebAssemblyDebugValueManager.h"
15#include "WebAssembly.h"
16#include "WebAssemblyMachineFunctionInfo.h"
17#include "llvm/CodeGen/MachineInstr.h"
18
19using namespace llvm;
20
21WebAssemblyDebugValueManager::WebAssemblyDebugValueManager(
22    MachineInstr *Instr) {
23  Instr->collectDebugValues(DbgValues);
24}
25
26void WebAssemblyDebugValueManager::move(MachineInstr *Insert) {
27  MachineBasicBlock *MBB = Insert->getParent();
28  for (MachineInstr *DBI : reverse(DbgValues))
29    MBB->splice(Insert, DBI->getParent(), DBI);
30}
31
32void WebAssemblyDebugValueManager::updateReg(unsigned Reg) {
33  for (auto *DBI : DbgValues)
34    DBI->getOperand(0).setReg(Reg);
35}
36
37void WebAssemblyDebugValueManager::clone(MachineInstr *Insert,
38                                         unsigned NewReg) {
39  MachineBasicBlock *MBB = Insert->getParent();
40  MachineFunction *MF = MBB->getParent();
41  for (MachineInstr *DBI : reverse(DbgValues)) {
42    MachineInstr *Clone = MF->CloneMachineInstr(DBI);
43    Clone->getOperand(0).setReg(NewReg);
44    MBB->insert(Insert, Clone);
45  }
46}
47
48void WebAssemblyDebugValueManager::replaceWithLocal(unsigned LocalId) {
49  for (auto *DBI : DbgValues) {
50    MachineOperand &Op = DBI->getOperand(0);
51    Op.ChangeToTargetIndex(llvm::WebAssembly::TI_LOCAL_START, LocalId);
52  }
53}
54