mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-04 22:07:27 +00:00
9b97a73ded
create symbols. It is extremely error prone and a source of a lot of the remaining integrated assembler bugs on x86-64. This fixes rdar://7807601. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99902 91177308-0d34-0410-b5e6-96231b3b80d8
58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
//===- lib/MC/MCContext.cpp - Machine Code Context ------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/MC/MCContext.h"
|
|
#include "llvm/MC/MCAsmInfo.h"
|
|
#include "llvm/MC/MCSection.h"
|
|
#include "llvm/MC/MCSymbol.h"
|
|
#include "llvm/ADT/SmallString.h"
|
|
#include "llvm/ADT/Twine.h"
|
|
using namespace llvm;
|
|
|
|
MCContext::MCContext(const MCAsmInfo &mai) : MAI(mai), NextUniqueID(0) {
|
|
}
|
|
|
|
MCContext::~MCContext() {
|
|
// NOTE: The sections are all allocated out of a bump pointer allocator,
|
|
// we don't need to free them here.
|
|
}
|
|
|
|
MCSymbol *MCContext::GetOrCreateSymbol(StringRef Name) {
|
|
assert(!Name.empty() && "Normal symbols cannot be unnamed!");
|
|
|
|
// Determine whether this is an assembler temporary or normal label.
|
|
bool isTemporary = Name.startswith(MAI.getPrivateGlobalPrefix());
|
|
|
|
// Do the lookup and get the entire StringMapEntry. We want access to the
|
|
// key if we are creating the entry.
|
|
StringMapEntry<MCSymbol*> &Entry = Symbols.GetOrCreateValue(Name);
|
|
if (Entry.getValue()) return Entry.getValue();
|
|
|
|
// Ok, the entry doesn't already exist. Have the MCSymbol object itself refer
|
|
// to the copy of the string that is embedded in the StringMapEntry.
|
|
MCSymbol *Result = new (*this) MCSymbol(Entry.getKey(), isTemporary);
|
|
Entry.setValue(Result);
|
|
return Result;
|
|
}
|
|
|
|
MCSymbol *MCContext::GetOrCreateSymbol(const Twine &Name) {
|
|
SmallString<128> NameSV;
|
|
Name.toVector(NameSV);
|
|
return GetOrCreateSymbol(NameSV.str());
|
|
}
|
|
|
|
MCSymbol *MCContext::CreateTempSymbol() {
|
|
return GetOrCreateSymbol(Twine(MAI.getPrivateGlobalPrefix()) +
|
|
"tmp" + Twine(NextUniqueID++));
|
|
}
|
|
|
|
MCSymbol *MCContext::LookupSymbol(StringRef Name) const {
|
|
return Symbols.lookup(Name);
|
|
}
|