diff options
Diffstat (limited to 'contrib/llvm/lib/CodeGen/AsmPrinter/DwarfFile.cpp')
| -rw-r--r-- | contrib/llvm/lib/CodeGen/AsmPrinter/DwarfFile.cpp | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/contrib/llvm/lib/CodeGen/AsmPrinter/DwarfFile.cpp b/contrib/llvm/lib/CodeGen/AsmPrinter/DwarfFile.cpp deleted file mode 100644 index e3c9095d1343..000000000000 --- a/contrib/llvm/lib/CodeGen/AsmPrinter/DwarfFile.cpp +++ /dev/null @@ -1,131 +0,0 @@ -//===- llvm/CodeGen/DwarfFile.cpp - Dwarf Debug Framework -----------------===// -// -// 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 "DwarfFile.h" -#include "DwarfCompileUnit.h" -#include "DwarfDebug.h" -#include "DwarfUnit.h" -#include "llvm/ADT/SmallVector.h" -#include "llvm/CodeGen/AsmPrinter.h" -#include "llvm/CodeGen/DIE.h" -#include "llvm/IR/DebugInfoMetadata.h" -#include "llvm/MC/MCStreamer.h" -#include <algorithm> -#include <cstdint> - -using namespace llvm; - -DwarfFile::DwarfFile(AsmPrinter *AP, StringRef Pref, BumpPtrAllocator &DA) - : Asm(AP), Abbrevs(AbbrevAllocator), StrPool(DA, *Asm, Pref) {} - -void DwarfFile::addUnit(std::unique_ptr<DwarfCompileUnit> U) { - CUs.push_back(std::move(U)); -} - -// Emit the various dwarf units to the unit section USection with -// the abbreviations going into ASection. -void DwarfFile::emitUnits(bool UseOffsets) { - for (const auto &TheU : CUs) - emitUnit(TheU.get(), UseOffsets); -} - -void DwarfFile::emitUnit(DwarfUnit *TheU, bool UseOffsets) { - if (TheU->getCUNode()->isDebugDirectivesOnly()) - return; - - MCSection *S = TheU->getSection(); - - if (!S) - return; - - // Skip CUs that ended up not being needed (split CUs that were abandoned - // because they added no information beyond the non-split CU) - if (llvm::empty(TheU->getUnitDie().values())) - return; - - Asm->OutStreamer->SwitchSection(S); - TheU->emitHeader(UseOffsets); - Asm->emitDwarfDIE(TheU->getUnitDie()); - - if (MCSymbol *EndLabel = TheU->getEndLabel()) - Asm->OutStreamer->EmitLabel(EndLabel); -} - -// Compute the size and offset for each DIE. -void DwarfFile::computeSizeAndOffsets() { - // Offset from the first CU in the debug info section is 0 initially. - unsigned SecOffset = 0; - - // Iterate over each compile unit and set the size and offsets for each - // DIE within each compile unit. All offsets are CU relative. - for (const auto &TheU : CUs) { - if (TheU->getCUNode()->isDebugDirectivesOnly()) - continue; - - // Skip CUs that ended up not being needed (split CUs that were abandoned - // because they added no information beyond the non-split CU) - if (llvm::empty(TheU->getUnitDie().values())) - return; - - TheU->setDebugSectionOffset(SecOffset); - SecOffset += computeSizeAndOffsetsForUnit(TheU.get()); - } -} - -unsigned DwarfFile::computeSizeAndOffsetsForUnit(DwarfUnit *TheU) { - // CU-relative offset is reset to 0 here. - unsigned Offset = sizeof(int32_t) + // Length of Unit Info - TheU->getHeaderSize(); // Unit-specific headers - - // The return value here is CU-relative, after laying out - // all of the CU DIE. - return computeSizeAndOffset(TheU->getUnitDie(), Offset); -} - -// Compute the size and offset of a DIE. The offset is relative to start of the -// CU. It returns the offset after laying out the DIE. -unsigned DwarfFile::computeSizeAndOffset(DIE &Die, unsigned Offset) { - return Die.computeOffsetsAndAbbrevs(Asm, Abbrevs, Offset); -} - -void DwarfFile::emitAbbrevs(MCSection *Section) { Abbrevs.Emit(Asm, Section); } - -// Emit strings into a string section. -void DwarfFile::emitStrings(MCSection *StrSection, MCSection *OffsetSection, - bool UseRelativeOffsets) { - StrPool.emit(*Asm, StrSection, OffsetSection, UseRelativeOffsets); -} - -bool DwarfFile::addScopeVariable(LexicalScope *LS, DbgVariable *Var) { - auto &ScopeVars = ScopeVariables[LS]; - const DILocalVariable *DV = Var->getVariable(); - if (unsigned ArgNum = DV->getArg()) { - auto Cached = ScopeVars.Args.find(ArgNum); - if (Cached == ScopeVars.Args.end()) - ScopeVars.Args[ArgNum] = Var; - else { - Cached->second->addMMIEntry(*Var); - return false; - } - } else { - ScopeVars.Locals.push_back(Var); - } - return true; -} - -void DwarfFile::addScopeLabel(LexicalScope *LS, DbgLabel *Label) { - SmallVectorImpl<DbgLabel *> &Labels = ScopeLabels[LS]; - Labels.push_back(Label); -} - -std::pair<uint32_t, RangeSpanList *> -DwarfFile::addRange(const DwarfCompileUnit &CU, SmallVector<RangeSpan, 2> R) { - CURangeLists.push_back( - RangeSpanList(Asm->createTempSymbol("debug_ranges"), CU, std::move(R))); - return std::make_pair(CURangeLists.size() - 1, &CURangeLists.back()); -} |
