| //===- llvm/CodeGen/AddressPool.cpp - Dwarf Debug Framework ---------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "AddressPool.h" |
| #include "llvm/ADT/SmallVector.h" |
| #include "llvm/CodeGen/AsmPrinter.h" |
| #include "llvm/IR/DataLayout.h" |
| #include "llvm/MC/MCStreamer.h" |
| #include "llvm/Target/TargetLoweringObjectFile.h" |
| #include <utility> |
| |
| using namespace llvm; |
| |
| unsigned AddressPool::getIndex(const MCSymbol *Sym, bool TLS) { |
| HasBeenUsed = true; |
| auto IterBool = |
| Pool.insert(std::make_pair(Sym, AddressPoolEntry(Pool.size(), TLS))); |
| return IterBool.first->second.Number; |
| } |
| |
| // Emit addresses into the section given. |
| void AddressPool::emit(AsmPrinter &Asm, MCSection *AddrSection) { |
| if (Pool.empty()) |
| return; |
| |
| // Start the dwarf addr section. |
| Asm.OutStreamer->SwitchSection(AddrSection); |
| |
| // Order the address pool entries by ID |
| SmallVector<const MCExpr *, 64> Entries(Pool.size()); |
| |
| for (const auto &I : Pool) |
| Entries[I.second.Number] = |
| I.second.TLS |
| ? Asm.getObjFileLowering().getDebugThreadLocalSymbol(I.first) |
| : MCSymbolRefExpr::create(I.first, Asm.OutContext); |
| |
| for (const MCExpr *Entry : Entries) |
| Asm.OutStreamer->EmitValue(Entry, Asm.getDataLayout().getPointerSize()); |
| } |