mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-11-04 05:17:07 +00:00
92f5b6a784
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33993 91177308-0d34-0410-b5e6-96231b3b80d8
111 lines
3.6 KiB
C++
111 lines
3.6 KiB
C++
//===-- ValueSymbolTable.cpp - Implement the ValueSymbolTable class -------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by the LLVM research group. It is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements the ValueSymbolTable class for the VMCore library.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#define DEBUG_TYPE "valuesymtab"
|
|
#include "llvm/GlobalValue.h"
|
|
#include "llvm/Type.h"
|
|
#include "llvm/ValueSymbolTable.h"
|
|
#include "llvm/ADT/StringExtras.h"
|
|
#include "llvm/Support/Debug.h"
|
|
#include <algorithm>
|
|
using namespace llvm;
|
|
|
|
// Class destructor
|
|
ValueSymbolTable::~ValueSymbolTable() {
|
|
#ifndef NDEBUG // Only do this in -g mode...
|
|
for (iterator VI = vmap.begin(), VE = vmap.end(); VI != VE; ++VI)
|
|
DEBUG(DOUT << "Value still in symbol table! Type = '"
|
|
<< VI->second->getType()->getDescription() << "' Name = '"
|
|
<< VI->first << "'\n");
|
|
assert(vmap.empty() && "Values remain in symbol table!");
|
|
#endif
|
|
}
|
|
|
|
// getUniqueName - Given a base name, return a string that is either equal to
|
|
// it (or derived from it) that does not already occur in the symbol table for
|
|
// the specified type.
|
|
//
|
|
std::string ValueSymbolTable::getUniqueName(const std::string &BaseName) const {
|
|
std::string TryName = BaseName;
|
|
const_iterator End = vmap.end();
|
|
|
|
// See if the name exists
|
|
while (vmap.find(TryName) != End) // Loop until we find a free
|
|
TryName = BaseName + utostr(++LastUnique); // name in the symbol table
|
|
return TryName;
|
|
}
|
|
|
|
|
|
// lookup a value - Returns null on failure...
|
|
//
|
|
Value *ValueSymbolTable::lookup(const std::string &Name) const {
|
|
const_iterator VI = vmap.find(Name);
|
|
if (VI != vmap.end()) // We found the symbol
|
|
return const_cast<Value*>(VI->second);
|
|
return 0;
|
|
}
|
|
|
|
// Insert a value into the symbol table with the specified name...
|
|
//
|
|
void ValueSymbolTable::insert(Value* V) {
|
|
assert(V && "Can't insert null Value into symbol table!");
|
|
assert(V->hasName() && "Can't insert nameless Value into symbol table");
|
|
|
|
// Try inserting the name, assuming it won't conflict.
|
|
if (vmap.insert(make_pair(V->Name, V)).second) {
|
|
DOUT << " Inserted value: " << V->Name << ": " << *V << "\n";
|
|
return;
|
|
}
|
|
|
|
// Otherwise, there is a naming conflict. Rename this value.
|
|
std::string UniqueName = V->getName();
|
|
unsigned BaseSize = UniqueName.size();
|
|
do {
|
|
// Trim any suffix off.
|
|
UniqueName.resize(BaseSize);
|
|
UniqueName += utostr(++LastUnique);
|
|
// Try insert the vmap entry with this suffix.
|
|
} while (!vmap.insert(make_pair(UniqueName, V)).second);
|
|
|
|
V->Name = UniqueName;
|
|
|
|
DEBUG(DOUT << " Inserted value: " << UniqueName << ": " << *V << "\n");
|
|
}
|
|
|
|
// Remove a value
|
|
void ValueSymbolTable::remove(Value *V) {
|
|
assert(V->hasName() && "Value doesn't have name!");
|
|
iterator Entry = vmap.find(V->getName());
|
|
assert(Entry != vmap.end() && "Entry was not in the symtab!");
|
|
|
|
DEBUG(DOUT << " Removing Value: " << Entry->second->getName() << "\n");
|
|
|
|
// Remove the value from the plane...
|
|
vmap.erase(Entry);
|
|
}
|
|
|
|
// DumpVal - a std::for_each function for dumping a value
|
|
//
|
|
static void DumpVal(const std::pair<const std::string, Value *> &V) {
|
|
DOUT << " '" << V.first << "' = ";
|
|
V.second->dump();
|
|
DOUT << "\n";
|
|
}
|
|
|
|
// dump - print out the symbol table
|
|
//
|
|
void ValueSymbolTable::dump() const {
|
|
DOUT << "ValueSymbolTable:\n";
|
|
for_each(vmap.begin(), vmap.end(), DumpVal);
|
|
}
|