mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 19:23:23 +01:00
121 lines
4.0 KiB
C++
121 lines
4.0 KiB
C++
//===-- ValueSymbolTable.cpp - Implement the ValueSymbolTable class -------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file 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/SmallString.h"
|
|
#include "llvm/Support/Debug.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
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)
|
|
errs() << "Value still in symbol table! Type = '"
|
|
<< VI->getValue()->getType()->getDescription() << "' Name = '"
|
|
<< VI->getKeyData() << "'\n";
|
|
assert(vmap.empty() && "Values remain in symbol table!");
|
|
#endif
|
|
}
|
|
|
|
// Insert a value into the symbol table with the specified name...
|
|
//
|
|
void ValueSymbolTable::reinsertValue(Value* V) {
|
|
assert(V->hasName() && "Can't insert nameless Value into symbol table");
|
|
|
|
// Try inserting the name, assuming it won't conflict.
|
|
if (vmap.insert(V->Name)) {
|
|
//DOUT << " Inserted value: " << V->Name << ": " << *V << "\n";
|
|
return;
|
|
}
|
|
|
|
// Otherwise, there is a naming conflict. Rename this value.
|
|
SmallString<128> UniqueName(V->getName().begin(), V->getName().end());
|
|
|
|
// The name is too already used, just free it so we can allocate a new name.
|
|
V->Name->Destroy();
|
|
|
|
unsigned BaseSize = UniqueName.size();
|
|
while (1) {
|
|
// Trim any suffix off.
|
|
UniqueName.resize(BaseSize);
|
|
UniqueName.append_uint_32(++LastUnique);
|
|
// Try insert the vmap entry with this suffix.
|
|
ValueName &NewName =
|
|
vmap.GetOrCreateValue(StringRef(UniqueName.data(),
|
|
UniqueName.size()));
|
|
if (NewName.getValue() == 0) {
|
|
// Newly inserted name. Success!
|
|
NewName.setValue(V);
|
|
V->Name = &NewName;
|
|
//DEBUG(DOUT << " Inserted value: " << UniqueName << ": " << *V << "\n");
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
void ValueSymbolTable::removeValueName(ValueName *V) {
|
|
//DEBUG(DOUT << " Removing Value: " << V->getKeyData() << "\n");
|
|
// Remove the value from the symbol table.
|
|
vmap.remove(V);
|
|
}
|
|
|
|
/// createValueName - This method attempts to create a value name and insert
|
|
/// it into the symbol table with the specified name. If it conflicts, it
|
|
/// auto-renames the name and returns that instead.
|
|
ValueName *ValueSymbolTable::createValueName(const StringRef &Name, Value *V) {
|
|
// In the common case, the name is not already in the symbol table.
|
|
ValueName &Entry = vmap.GetOrCreateValue(Name);
|
|
if (Entry.getValue() == 0) {
|
|
Entry.setValue(V);
|
|
//DEBUG(DOUT << " Inserted value: " << Entry.getKeyData() << ": "
|
|
// << *V << "\n");
|
|
return &Entry;
|
|
}
|
|
|
|
// Otherwise, there is a naming conflict. Rename this value.
|
|
SmallString<128> UniqueName(Name.begin(), Name.end());
|
|
|
|
while (1) {
|
|
// Trim any suffix off.
|
|
UniqueName.resize(Name.size());
|
|
UniqueName.append_uint_32(++LastUnique);
|
|
|
|
// Try insert the vmap entry with this suffix.
|
|
ValueName &NewName =
|
|
vmap.GetOrCreateValue(StringRef(UniqueName.data(),
|
|
UniqueName.size()));
|
|
if (NewName.getValue() == 0) {
|
|
// Newly inserted name. Success!
|
|
NewName.setValue(V);
|
|
//DEBUG(DOUT << " Inserted value: " << UniqueName << ": " << *V << "\n");
|
|
return &NewName;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// dump - print out the symbol table
|
|
//
|
|
void ValueSymbolTable::dump() const {
|
|
//DOUT << "ValueSymbolTable:\n";
|
|
for (const_iterator I = begin(), E = end(); I != E; ++I) {
|
|
//DOUT << " '" << I->getKeyData() << "' = ";
|
|
I->getValue()->dump();
|
|
//DOUT << "\n";
|
|
}
|
|
}
|