1 //===-- ValueSymbolTable.cpp - Implement the ValueSymbolTable class -------===//
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 // This file implements the ValueSymbolTable class for the VMCore library.
12 //===----------------------------------------------------------------------===//
14 #define DEBUG_TYPE "valuesymtab"
15 #include "llvm/GlobalValue.h"
16 #include "llvm/Type.h"
17 #include "llvm/ValueSymbolTable.h"
18 #include "llvm/ADT/SmallString.h"
19 #include "llvm/Support/Debug.h"
20 #include "llvm/Support/raw_ostream.h"
24 ValueSymbolTable::~ValueSymbolTable() {
25 #ifndef NDEBUG // Only do this in -g mode...
26 for (iterator VI = vmap.begin(), VE = vmap.end(); VI != VE; ++VI)
27 dbgs() << "Value still in symbol table! Type = '"
28 << VI->getValue()->getType()->getDescription() << "' Name = '"
29 << VI->getKeyData() << "'\n";
30 assert(vmap.empty() && "Values remain in symbol table!");
34 // Insert a value into the symbol table with the specified name...
36 void ValueSymbolTable::reinsertValue(Value* V) {
37 assert(V->hasName() && "Can't insert nameless Value into symbol table");
39 // Try inserting the name, assuming it won't conflict.
40 if (vmap.insert(V->Name)) {
41 //DEBUG(dbgs() << " Inserted value: " << V->Name << ": " << *V << "\n");
45 // Otherwise, there is a naming conflict. Rename this value.
46 SmallString<256> UniqueName(V->getName().begin(), V->getName().end());
48 // The name is too already used, just free it so we can allocate a new name.
51 unsigned BaseSize = UniqueName.size();
53 // Trim any suffix off and append the next number.
54 UniqueName.resize(BaseSize);
55 raw_svector_ostream(UniqueName) << ++LastUnique;
57 // Try insert the vmap entry with this suffix.
59 vmap.GetOrCreateValue(StringRef(UniqueName.data(),
61 if (NewName.getValue() == 0) {
62 // Newly inserted name. Success!
65 //DEBUG(dbgs() << " Inserted value: " << UniqueName << ": " << *V << "\n");
71 void ValueSymbolTable::removeValueName(ValueName *V) {
72 //DEBUG(dbgs() << " Removing Value: " << V->getKeyData() << "\n");
73 // Remove the value from the symbol table.
77 /// createValueName - This method attempts to create a value name and insert
78 /// it into the symbol table with the specified name. If it conflicts, it
79 /// auto-renames the name and returns that instead.
80 ValueName *ValueSymbolTable::createValueName(StringRef Name, Value *V) {
81 // In the common case, the name is not already in the symbol table.
82 ValueName &Entry = vmap.GetOrCreateValue(Name);
83 if (Entry.getValue() == 0) {
85 //DEBUG(dbgs() << " Inserted value: " << Entry.getKeyData() << ": "
90 // Otherwise, there is a naming conflict. Rename this value.
91 SmallString<128> UniqueName(Name.begin(), Name.end());
94 // Trim any suffix off and append the next number.
95 UniqueName.resize(Name.size());
96 raw_svector_ostream(UniqueName) << ++LastUnique;
98 // Try insert the vmap entry with this suffix.
100 vmap.GetOrCreateValue(StringRef(UniqueName.data(),
102 if (NewName.getValue() == 0) {
103 // Newly inserted name. Success!
105 //DEBUG(dbgs() << " Inserted value: " << UniqueName << ": " << *V << "\n");
112 // dump - print out the symbol table
114 void ValueSymbolTable::dump() const {
115 //DEBUG(dbgs() << "ValueSymbolTable:\n");
116 for (const_iterator I = begin(), E = end(); I != E; ++I) {
117 //DEBUG(dbgs() << " '" << I->getKeyData() << "' = ");
118 I->getValue()->dump();
119 //DEBUG(dbgs() << "\n");
123 MDSymbolTable::~MDSymbolTable() { }