adf7a0a558
Extends DWARF expression language to express locals/globals locations. (via
target-index operands atm) (possible variants are: non-virtual registers
or address spaces)
The WebAssemblyExplicitLocals can replace virtual registers to targertindex
operand type at the time when WebAssembly backend introduces
{get,set,tee}_local instead of corresponding virtual registers.
Reviewed By: aprantl, dschuff
Tags: #debug-info, #llvm
Differential Revision: https://reviews.llvm.org/D52634
54 lines
1.8 KiB
C++
54 lines
1.8 KiB
C++
//===-- WebAssemblyDebugValueManager.cpp - WebAssembly DebugValue Manager -===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// This file implements the manager for MachineInstr DebugValues.
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///
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//===----------------------------------------------------------------------===//
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#include "WebAssemblyDebugValueManager.h"
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#include "WebAssembly.h"
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#include "WebAssemblyMachineFunctionInfo.h"
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#include "llvm/CodeGen/MachineInstr.h"
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using namespace llvm;
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WebAssemblyDebugValueManager::WebAssemblyDebugValueManager(
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MachineInstr *Instr) {
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Instr->collectDebugValues(DbgValues);
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}
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void WebAssemblyDebugValueManager::move(MachineInstr *Insert) {
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MachineBasicBlock *MBB = Insert->getParent();
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for (MachineInstr *DBI : reverse(DbgValues))
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MBB->splice(Insert, DBI->getParent(), DBI);
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}
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void WebAssemblyDebugValueManager::updateReg(unsigned Reg) {
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for (auto *DBI : DbgValues)
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DBI->getOperand(0).setReg(Reg);
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}
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void WebAssemblyDebugValueManager::clone(MachineInstr *Insert,
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unsigned NewReg) {
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MachineBasicBlock *MBB = Insert->getParent();
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MachineFunction *MF = MBB->getParent();
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for (MachineInstr *DBI : reverse(DbgValues)) {
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MachineInstr *Clone = MF->CloneMachineInstr(DBI);
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Clone->getOperand(0).setReg(NewReg);
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MBB->insert(Insert, Clone);
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}
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}
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void WebAssemblyDebugValueManager::replaceWithLocal(unsigned LocalId) {
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for (auto *DBI : DbgValues) {
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MachineOperand &Op = DBI->getOperand(0);
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Op.ChangeToTargetIndex(llvm::WebAssembly::TI_LOCAL_START, LocalId);
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}
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}
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