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"
23 ValueSymbolTable::~ValueSymbolTable() {
24 #ifndef NDEBUG // Only do this in -g mode...
25 for (iterator VI = vmap.begin(), VE = vmap.end(); VI != VE; ++VI)
26 cerr << "Value still in symbol table! Type = '"
27 << VI->getValue()->getType()->getDescription() << "' Name = '"
28 << VI->getKeyData() << "'\n";
29 assert(vmap.empty() && "Values remain in symbol table!");
33 // Insert a value into the symbol table with the specified name...
35 void ValueSymbolTable::reinsertValue(Value* V) {
36 assert(V->hasName() && "Can't insert nameless Value into symbol table");
38 // Try inserting the name, assuming it won't conflict.
39 if (vmap.insert(V->Name)) {
40 //DOUT << " Inserted value: " << V->Name << ": " << *V << "\n";
44 // Otherwise, there is a naming conflict. Rename this value.
45 SmallString<128> UniqueName(V->getNameStart(), V->getNameEnd());
47 // The name is too already used, just free it so we can allocate a new name.
50 unsigned BaseSize = UniqueName.size();
52 // Trim any suffix off.
53 UniqueName.resize(BaseSize);
54 UniqueName.append_uint_32(++LastUnique);
55 // Try insert the vmap entry with this suffix.
57 vmap.GetOrCreateValue(StringRef(UniqueName.data(),
59 if (NewName.getValue() == 0) {
60 // Newly inserted name. Success!
63 //DEBUG(DOUT << " Inserted value: " << UniqueName << ": " << *V << "\n");
69 void ValueSymbolTable::removeValueName(ValueName *V) {
70 //DEBUG(DOUT << " Removing Value: " << V->getKeyData() << "\n");
71 // Remove the value from the symbol table.
75 /// createValueName - This method attempts to create a value name and insert
76 /// it into the symbol table with the specified name. If it conflicts, it
77 /// auto-renames the name and returns that instead.
78 ValueName *ValueSymbolTable::createValueName(const StringRef &Name, Value *V) {
79 // In the common case, the name is not already in the symbol table.
80 ValueName &Entry = vmap.GetOrCreateValue(Name);
81 if (Entry.getValue() == 0) {
83 //DEBUG(DOUT << " Inserted value: " << Entry.getKeyData() << ": "
88 // Otherwise, there is a naming conflict. Rename this value.
89 SmallString<128> UniqueName(Name.begin(), Name.end());
92 // Trim any suffix off.
93 UniqueName.resize(Name.size());
94 UniqueName.append_uint_32(++LastUnique);
96 // Try insert the vmap entry with this suffix.
98 vmap.GetOrCreateValue(StringRef(UniqueName.data(),
100 if (NewName.getValue() == 0) {
101 // Newly inserted name. Success!
103 //DEBUG(DOUT << " Inserted value: " << UniqueName << ": " << *V << "\n");
110 // dump - print out the symbol table
112 void ValueSymbolTable::dump() const {
113 //DOUT << "ValueSymbolTable:\n";
114 for (const_iterator I = begin(), E = end(); I != E; ++I) {
115 //DOUT << " '" << I->getKeyData() << "' = ";
116 I->getValue()->dump();