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