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//===-- LVLine.cpp --------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This implements the LVLine class.
//
//===----------------------------------------------------------------------===//
#include "llvm/DebugInfo/LogicalView/Core/LVLine.h"
#include "llvm/DebugInfo/LogicalView/Core/LVCompare.h"
#include "llvm/DebugInfo/LogicalView/Core/LVReader.h"
using namespace llvm;
using namespace llvm::logicalview;
#define DEBUG_TYPE "Line"
namespace {
const char *const KindBasicBlock = "BasicBlock";
const char *const KindDiscriminator = "Discriminator";
const char *const KindEndSequence = "EndSequence";
const char *const KindEpilogueBegin = "EpilogueBegin";
const char *const KindLineDebug = "Line";
const char *const KindLineSource = "Code";
const char *const KindNewStatement = "NewStatement";
const char *const KindPrologueEnd = "PrologueEnd";
const char *const KindUndefined = "Undefined";
const char *const KindAlwaysStepInto = "AlwaysStepInto"; // CodeView
const char *const KindNeverStepInto = "NeverStepInto"; // CodeView
} // end anonymous namespace
//===----------------------------------------------------------------------===//
// Logical line.
//===----------------------------------------------------------------------===//
// Return a string representation for the line kind.
const char *LVLine::kind() const {
const char *Kind = KindUndefined;
if (getIsLineDebug())
Kind = KindLineDebug;
else if (getIsLineAssembler())
Kind = KindLineSource;
return Kind;
}
LVLineDispatch LVLine::Dispatch = {
{LVLineKind::IsBasicBlock, &LVLine::getIsBasicBlock},
{LVLineKind::IsDiscriminator, &LVLine::getIsDiscriminator},
{LVLineKind::IsEndSequence, &LVLine::getIsEndSequence},
{LVLineKind::IsLineDebug, &LVLine::getIsLineDebug},
{LVLineKind::IsLineAssembler, &LVLine::getIsLineAssembler},
{LVLineKind::IsNewStatement, &LVLine::getIsNewStatement},
{LVLineKind::IsEpilogueBegin, &LVLine::getIsEpilogueBegin},
{LVLineKind::IsPrologueEnd, &LVLine::getIsPrologueEnd},
{LVLineKind::IsAlwaysStepInto, &LVLine::getIsAlwaysStepInto},
{LVLineKind::IsNeverStepInto, &LVLine::getIsNeverStepInto}};
// String used as padding for printing elements with no line number.
std::string LVLine::noLineAsString(bool ShowZero) const {
if (options().getInternalNone())
return LVObject::noLineAsString(ShowZero);
return (ShowZero || options().getAttributeZero()) ? (" 0 ")
: (" - ");
}
void LVLine::markMissingParents(const LVLines *References,
const LVLines *Targets) {
if (!(References && Targets))
return;
LLVM_DEBUG({
dbgs() << "\n[LVLine::markMissingParents]\n";
for (const LVLine *Reference : *References)
dbgs() << "References: "
<< "Kind = " << formattedKind(Reference->kind()) << ", "
<< "Line = " << Reference->getLineNumber() << "\n";
for (const LVLine *Target : *Targets)
dbgs() << "Targets : "
<< "Kind = " << formattedKind(Target->kind()) << ", "
<< "Line = " << Target->getLineNumber() << "\n";
});
for (LVLine *Reference : *References) {
LLVM_DEBUG({
dbgs() << "Search Reference: Line = " << Reference->getLineNumber()
<< "\n";
});
if (!Reference->findIn(Targets))
Reference->markBranchAsMissing();
}
}
LVLine *LVLine::findIn(const LVLines *Targets) const {
if (!Targets)
return nullptr;
LLVM_DEBUG({
dbgs() << "\n[LVLine::findIn]\n"
<< "Reference: "
<< "Level = " << getLevel() << ", "
<< "Kind = " << formattedKind(kind()) << ", "
<< "Line = " << getLineNumber() << "\n";
for (const LVLine *Target : *Targets)
dbgs() << "Target : "
<< "Level = " << Target->getLevel() << ", "
<< "Kind = " << formattedKind(Target->kind()) << ", "
<< "Line = " << Target->getLineNumber() << "\n";
});
for (LVLine *Line : *Targets)
if (equals(Line))
return Line;
return nullptr;
}
bool LVLine::equals(const LVLine *Line) const {
return LVElement::equals(Line);
}
bool LVLine::equals(const LVLines *References, const LVLines *Targets) {
if (!References && !Targets)
return true;
if (References && Targets && References->size() == Targets->size()) {
for (const LVLine *Reference : *References)
if (!Reference->findIn(Targets))
return false;
return true;
}
return false;
}
void LVLine::report(LVComparePass Pass) {
getComparator().printItem(this, Pass);
}
void LVLine::print(raw_ostream &OS, bool Full) const {
if (getReader().doPrintLine(this)) {
getReaderCompileUnit()->incrementPrintedLines();
LVElement::print(OS, Full);
printExtra(OS, Full);
}
}
//===----------------------------------------------------------------------===//
// DWARF line record.
//===----------------------------------------------------------------------===//
std::string LVLineDebug::statesInfo(bool Formatted) const {
// Returns the DWARF extra qualifiers.
std::string String;
raw_string_ostream Stream(String);
std::string Separator = Formatted ? " " : "";
if (getIsNewStatement()) {
Stream << Separator << "{" << KindNewStatement << "}";
Separator = " ";
}
if (getIsDiscriminator()) {
Stream << Separator << "{" << KindDiscriminator << "}";
Separator = " ";
}
if (getIsBasicBlock()) {
Stream << Separator << "{" << KindBasicBlock << "}";
Separator = " ";
}
if (getIsEndSequence()) {
Stream << Separator << "{" << KindEndSequence << "}";
Separator = " ";
}
if (getIsEpilogueBegin()) {
Stream << Separator << "{" << KindEpilogueBegin << "}";
Separator = " ";
}
if (getIsPrologueEnd()) {
Stream << Separator << "{" << KindPrologueEnd << "}";
Separator = " ";
}
if (getIsAlwaysStepInto()) {
Stream << Separator << "{" << KindAlwaysStepInto << "}";
Separator = " ";
}
if (getIsNeverStepInto()) {
Stream << Separator << "{" << KindNeverStepInto << "}";
Separator = " ";
}
return String;
}
bool LVLineDebug::equals(const LVLine *Line) const {
if (!LVLine::equals(Line))
return false;
return getFilenameIndex() == Line->getFilenameIndex();
}
void LVLineDebug::printExtra(raw_ostream &OS, bool Full) const {
OS << formattedKind(kind());
if (options().getAttributeQualifier()) {
// The qualifier includes the states information and the source filename
// that contains the line element.
OS << statesInfo(/*Formatted=*/true);
OS << " " << formattedName(getPathname());
}
OS << "\n";
}
//===----------------------------------------------------------------------===//
// Assembler line extracted from the ELF .text section.
//===----------------------------------------------------------------------===//
bool LVLineAssembler::equals(const LVLine *Line) const {
return LVLine::equals(Line);
}
void LVLineAssembler::printExtra(raw_ostream &OS, bool Full) const {
OS << formattedKind(kind());
OS << " " << formattedName(getName());
OS << "\n";
}
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