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//===-- DebugLoc.cpp - Implement DebugLoc class ---------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "llvm/IR/DebugLoc.h"
#include "LLVMContextImpl.h"
#include "llvm/Config/llvm-config.h"
#include "llvm/IR/DebugInfo.h"
using namespace llvm;
//===----------------------------------------------------------------------===//
// DebugLoc Implementation
//===----------------------------------------------------------------------===//
DebugLoc::DebugLoc(const DILocation *L) : Loc(const_cast<DILocation *>(L)) {}
DebugLoc::DebugLoc(const MDNode *L) : Loc(const_cast<MDNode *>(L)) {}
DILocation *DebugLoc::get() const {
return cast_or_null<DILocation>(Loc.get());
}
unsigned DebugLoc::getLine() const {
assert(get() && "Expected valid DebugLoc");
return get()->getLine();
}
unsigned DebugLoc::getCol() const {
assert(get() && "Expected valid DebugLoc");
return get()->getColumn();
}
MDNode *DebugLoc::getScope() const {
assert(get() && "Expected valid DebugLoc");
return get()->getScope();
}
DILocation *DebugLoc::getInlinedAt() const {
assert(get() && "Expected valid DebugLoc");
return get()->getInlinedAt();
}
MDNode *DebugLoc::getInlinedAtScope() const {
return cast<DILocation>(Loc)->getInlinedAtScope();
}
DebugLoc DebugLoc::getFnDebugLoc() const {
// FIXME: Add a method on \a DILocation that does this work.
const MDNode *Scope = getInlinedAtScope();
if (auto *SP = getDISubprogram(Scope))
return DebugLoc::get(SP->getScopeLine(), 0, SP);
return DebugLoc();
}
bool DebugLoc::isImplicitCode() const {
if (DILocation *Loc = get()) {
return Loc->isImplicitCode();
}
return true;
}
void DebugLoc::setImplicitCode(bool ImplicitCode) {
if (DILocation *Loc = get()) {
Loc->setImplicitCode(ImplicitCode);
}
}
DebugLoc DebugLoc::get(unsigned Line, unsigned Col, const MDNode *Scope,
const MDNode *InlinedAt, bool ImplicitCode) {
// If no scope is available, this is an unknown location.
if (!Scope)
return DebugLoc();
return DILocation::get(Scope->getContext(), Line, Col,
const_cast<MDNode *>(Scope),
const_cast<MDNode *>(InlinedAt), ImplicitCode);
}
DebugLoc DebugLoc::appendInlinedAt(DebugLoc DL, DILocation *InlinedAt,
LLVMContext &Ctx,
DenseMap<const MDNode *, MDNode *> &Cache,
bool ReplaceLast) {
SmallVector<DILocation *, 3> InlinedAtLocations;
DILocation *Last = InlinedAt;
DILocation *CurInlinedAt = DL;
// Gather all the inlined-at nodes.
while (DILocation *IA = CurInlinedAt->getInlinedAt()) {
// Skip any we've already built nodes for.
if (auto *Found = Cache[IA]) {
Last = cast<DILocation>(Found);
break;
}
if (ReplaceLast && !IA->getInlinedAt())
break;
InlinedAtLocations.push_back(IA);
CurInlinedAt = IA;
}
// Starting from the top, rebuild the nodes to point to the new inlined-at
// location (then rebuilding the rest of the chain behind it) and update the
// map of already-constructed inlined-at nodes.
for (const DILocation *MD : reverse(InlinedAtLocations))
Cache[MD] = Last = DILocation::getDistinct(
Ctx, MD->getLine(), MD->getColumn(), MD->getScope(), Last);
return Last;
}
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
LLVM_DUMP_METHOD void DebugLoc::dump() const { print(dbgs()); }
#endif
void DebugLoc::print(raw_ostream &OS) const {
if (!Loc)
return;
// Print source line info.
auto *Scope = cast<DIScope>(getScope());
OS << Scope->getFilename();
OS << ':' << getLine();
if (getCol() != 0)
OS << ':' << getCol();
if (DebugLoc InlinedAtDL = getInlinedAt()) {
OS << " @[ ";
InlinedAtDL.print(OS);
OS << " ]";
}
}
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