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d1526083fc
Summary: BOLT - Binary Optimization and Layout Tool replaces FLO. I'm keeping .fdata extension for "feedback data". (cherry picked from FBD2908028)
48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
//===--- BinaryContext.cpp - Interface for machine-level context ---------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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//===----------------------------------------------------------------------===//
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#include "BinaryContext.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCSymbol.h"
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namespace llvm {
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namespace bolt {
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MCSymbol *BinaryContext::getOrCreateGlobalSymbol(uint64_t Address,
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Twine Prefix) {
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MCSymbol *Symbol{nullptr};
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std::string Name;
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auto NI = GlobalAddresses.find(Address);
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if (NI != GlobalAddresses.end()) {
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// Even though there could be multiple names registered at the address,
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// we only use the first one.
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Name = NI->second;
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} else {
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Name = (Prefix + "0x" + Twine::utohexstr(Address)).str();
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assert(GlobalSymbols.find(Name) == GlobalSymbols.end() &&
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"created name is not unique");
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GlobalAddresses.emplace(std::make_pair(Address, Name));
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}
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Symbol = Ctx->lookupSymbol(Name);
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if (Symbol)
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return Symbol;
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Symbol = Ctx->getOrCreateSymbol(Name);
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GlobalSymbols[Name] = Address;
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return Symbol;
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}
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} // namespace bolt
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} // namespace llvm
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