999643f151
Misc. cleanups for `WebAssemblyDebugValueManager`. - Use `Register` for registers - Simpler for loop iteration - Rename a variable - Reorder methods - Reduce `SmallVector` size for `DBG_VALUE`s to 1; one def usually have a single `DBG_VALUE` attached to it in most cases - Add a few more lines of comments Reviewed By: dschuff Differential Revision: https://reviews.llvm.org/D146743
70 lines
2.5 KiB
C++
70 lines
2.5 KiB
C++
//===-- WebAssemblyDebugValueManager.cpp - WebAssembly DebugValue Manager -===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
///
|
|
/// \file
|
|
/// This file implements the manager for MachineInstr DebugValues.
|
|
///
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "WebAssemblyDebugValueManager.h"
|
|
#include "WebAssembly.h"
|
|
#include "WebAssemblyMachineFunctionInfo.h"
|
|
#include "llvm/CodeGen/MachineInstr.h"
|
|
|
|
using namespace llvm;
|
|
|
|
WebAssemblyDebugValueManager::WebAssemblyDebugValueManager(MachineInstr *Def) {
|
|
// This code differs from MachineInstr::collectDebugValues in that it scans
|
|
// the whole BB, not just contiguous DBG_VALUEs.
|
|
if (!Def->getOperand(0).isReg())
|
|
return;
|
|
CurrentReg = Def->getOperand(0).getReg();
|
|
|
|
for (MachineBasicBlock::iterator MI = std::next(Def->getIterator()),
|
|
ME = Def->getParent()->end();
|
|
MI != ME; ++MI) {
|
|
if (MI->isDebugValue() && MI->hasDebugOperandForReg(CurrentReg))
|
|
DbgValues.push_back(&*MI);
|
|
}
|
|
}
|
|
|
|
void WebAssemblyDebugValueManager::move(MachineInstr *Insert) {
|
|
MachineBasicBlock *MBB = Insert->getParent();
|
|
for (MachineInstr *DBI : reverse(DbgValues))
|
|
MBB->splice(Insert, DBI->getParent(), DBI);
|
|
}
|
|
|
|
void WebAssemblyDebugValueManager::clone(MachineInstr *Insert,
|
|
Register NewReg) {
|
|
MachineBasicBlock *MBB = Insert->getParent();
|
|
MachineFunction *MF = MBB->getParent();
|
|
for (MachineInstr *DBI : reverse(DbgValues)) {
|
|
MachineInstr *Clone = MF->CloneMachineInstr(DBI);
|
|
for (auto &MO : Clone->getDebugOperandsForReg(CurrentReg))
|
|
MO.setReg(NewReg);
|
|
MBB->insert(Insert, Clone);
|
|
}
|
|
}
|
|
|
|
void WebAssemblyDebugValueManager::updateReg(Register Reg) {
|
|
for (auto *DBI : DbgValues)
|
|
for (auto &MO : DBI->getDebugOperandsForReg(CurrentReg))
|
|
MO.setReg(Reg);
|
|
CurrentReg = Reg;
|
|
}
|
|
|
|
void WebAssemblyDebugValueManager::replaceWithLocal(unsigned LocalId) {
|
|
for (auto *DBI : DbgValues) {
|
|
auto IndexType = DBI->isIndirectDebugValue()
|
|
? llvm::WebAssembly::TI_LOCAL_INDIRECT
|
|
: llvm::WebAssembly::TI_LOCAL;
|
|
for (auto &MO : DBI->getDebugOperandsForReg(CurrentReg))
|
|
MO.ChangeToTargetIndex(IndexType, LocalId);
|
|
}
|
|
}
|