mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-01 00:11:00 +00:00
7fc9fe3439
* Convert post to pre-increment for for loops * Use generic programming more * Use new Value::cast* instructions * Use new Module, Method, & BasicBlock forwarding methods * Use new facilities in STLExtras.h * Use new Instruction::isPHINode() method git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96 91177308-0d34-0410-b5e6-96231b3b80d8
126 lines
3.8 KiB
C++
126 lines
3.8 KiB
C++
//===-- SymbolTable.cpp - Implement the SymbolTable class -------------------=//
|
|
//
|
|
// This file implements the SymbolTable class for the VMCore library.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/SymbolTable.h"
|
|
#include "llvm/InstrTypes.h"
|
|
#include "llvm/Tools/StringExtras.h"
|
|
#ifndef NDEBUG
|
|
#include "llvm/BasicBlock.h" // Required for assertions to work.
|
|
#include "llvm/Type.h"
|
|
#endif
|
|
|
|
SymbolTable::~SymbolTable() {
|
|
#ifndef NDEBUG // Only do this in -g mode...
|
|
bool Good = true;
|
|
for (iterator i = begin(); i != end(); ++i) {
|
|
if (i->second.begin() != i->second.end()) {
|
|
for (type_iterator I = i->second.begin(); I != i->second.end(); ++I)
|
|
cerr << "Value still in symbol table! Type = " << i->first->getName()
|
|
<< " Name = " << I->first << endl;
|
|
Good = false;
|
|
}
|
|
}
|
|
assert(Good && "Values remain in symbol table!");
|
|
#endif
|
|
}
|
|
|
|
SymbolTable::type_iterator SymbolTable::type_find(const Value *D) {
|
|
assert(D->hasName() && "type_find(Value*) only works on named nodes!");
|
|
return type_find(D->getType(), D->getName());
|
|
}
|
|
|
|
|
|
// find - returns end(Ty->getIDNumber()) on failure...
|
|
SymbolTable::type_iterator SymbolTable::type_find(const Type *Ty,
|
|
const string &Name) {
|
|
iterator I = find(Ty);
|
|
if (I == end()) { // Not in collection yet... insert dummy entry
|
|
(*this)[Ty] = VarMap();
|
|
I = find(Ty);
|
|
assert(I != end() && "How did insert fail?");
|
|
}
|
|
|
|
return I->second.find(Name);
|
|
}
|
|
|
|
// 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.
|
|
//
|
|
string SymbolTable::getUniqueName(const Type *Ty, const string &BaseName) {
|
|
iterator I = find(Ty);
|
|
if (I == end()) return BaseName;
|
|
|
|
string TryName = BaseName;
|
|
unsigned Counter = 0;
|
|
type_iterator End = I->second.end();
|
|
|
|
while (I->second.find(TryName) != End) // Loop until we find unoccupied
|
|
TryName = BaseName + utostr(++Counter); // Name in the symbol table
|
|
return TryName;
|
|
}
|
|
|
|
|
|
|
|
// lookup - Returns null on failure...
|
|
Value *SymbolTable::lookup(const Type *Ty, const string &Name) {
|
|
iterator I = find(Ty);
|
|
if (I != end()) { // We have symbols in that plane...
|
|
type_iterator J = I->second.find(Name);
|
|
if (J != I->second.end()) // and the name is in our hash table...
|
|
return J->second;
|
|
}
|
|
|
|
return ParentSymTab ? ParentSymTab->lookup(Ty, Name) : 0;
|
|
}
|
|
|
|
void SymbolTable::remove(Value *N) {
|
|
assert(N->hasName() && "Value doesn't have name!");
|
|
assert(type_find(N) != type_end(N->getType()) &&
|
|
"Value not in symbol table!");
|
|
type_remove(type_find(N));
|
|
}
|
|
|
|
|
|
#define DEBUG_SYMBOL_TABLE 0
|
|
|
|
Value *SymbolTable::type_remove(const type_iterator &It) {
|
|
Value *Result = It->second;
|
|
#if DEBUG_SYMBOL_TABLE
|
|
cerr << this << " Removing Value: " << Result->getName() << endl;
|
|
#endif
|
|
|
|
find(Result->getType())->second.erase(It);
|
|
|
|
return Result;
|
|
}
|
|
|
|
void SymbolTable::insert(Value *N) {
|
|
assert(N->hasName() && "Value must be named to go into symbol table!");
|
|
|
|
// TODO: The typeverifier should catch this when its implemented
|
|
if (lookup(N->getType(), N->getName())) {
|
|
cerr << "SymbolTable WARNING: Name already in symbol table: '"
|
|
<< N->getName() << "'\n";
|
|
abort(); // TODO: REMOVE THIS
|
|
}
|
|
|
|
#if DEBUG_SYMBOL_TABLE
|
|
cerr << this << " Inserting definition: " << N->getName() << ": "
|
|
<< N->getType()->getName() << endl;
|
|
#endif
|
|
|
|
iterator I = find(N->getType());
|
|
if (I == end()) { // Not in collection yet... insert dummy entry
|
|
(*this)[N->getType()] = VarMap();
|
|
I = find(N->getType());
|
|
assert(I != end() && "How did insert fail?");
|
|
}
|
|
|
|
I->second.insert(make_pair(N->getName(), N));
|
|
}
|
|
|