1 //===- lib/MC/MCContext.cpp - Machine Code Context ------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/MC/MCContext.h"
11 #include "llvm/MC/MCSection.h"
12 #include "llvm/MC/MCSymbol.h"
13 #include "llvm/ADT/SmallString.h"
14 #include "llvm/ADT/Twine.h"
17 MCContext::MCContext() {
20 MCContext::~MCContext() {
21 // NOTE: The sections are all allocated out of a bump pointer allocator,
22 // we don't need to free them here.
25 MCSymbol *MCContext::GetOrCreateSymbol(StringRef Name) {
26 assert(!Name.empty() && "Normal symbols cannot be unnamed!");
27 MCSymbol *&Entry = Symbols[Name];
28 if (Entry) return Entry;
30 return Entry = new (*this) MCSymbol(Name, false);
33 MCSymbol *MCContext::GetOrCreateSymbol(const Twine &Name) {
34 SmallString<128> NameSV;
35 Name.toVector(NameSV);
36 return GetOrCreateSymbol(NameSV.str());
40 MCSymbol *MCContext::GetOrCreateTemporarySymbol(StringRef Name) {
41 // If unnamed, just create a symbol.
43 new (*this) MCSymbol("", true);
45 // Otherwise create as usual.
46 MCSymbol *&Entry = Symbols[Name];
47 if (Entry) return Entry;
48 return Entry = new (*this) MCSymbol(Name, true);
51 MCSymbol *MCContext::GetOrCreateTemporarySymbol(const Twine &Name) {
52 SmallString<128> NameSV;
53 Name.toVector(NameSV);
54 return GetOrCreateTemporarySymbol(NameSV.str());
58 MCSymbol *MCContext::LookupSymbol(StringRef Name) const {
59 return Symbols.lookup(Name);