mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-19 19:30:10 +00:00
7e02b7e600
Optimizations now live in the 'opt' namespace include/llvm/Opt was renamed include/llvm/Optimizations git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113 91177308-0d34-0410-b5e6-96231b3b80d8
56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
//===- SymbolStripping.cpp - Code to string symbols for methods and modules -=//
|
|
//
|
|
// This file implements stripping symbols out of symbol tables.
|
|
//
|
|
// Specifically, this allows you to strip all of the symbols out of:
|
|
// * A method
|
|
// * All methods in a module
|
|
// * All symbols in a module (all method symbols + all module scope symbols)
|
|
//
|
|
// Notice that:
|
|
// * This pass makes code much less readable, so it should only be used in
|
|
// situations where the 'strip' utility would be used (such as reducing
|
|
// code size, and making it harder to reverse engineer code).
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Optimizations/AllOpts.h"
|
|
#include "llvm/Module.h"
|
|
#include "llvm/Method.h"
|
|
#include "llvm/SymbolTable.h"
|
|
|
|
static bool StripSymbolTable(SymbolTable *SymTab) {
|
|
if (SymTab == 0) return false; // No symbol table? No problem.
|
|
bool RemovedSymbol = false;
|
|
|
|
for (SymbolTable::iterator I = SymTab->begin(); I != SymTab->end(); ++I) {
|
|
map<const string, Value *> &Plane = I->second;
|
|
|
|
map<const string, Value *>::iterator B;
|
|
while ((B = Plane.begin()) != Plane.end()) { // Found nonempty type plane!
|
|
B->second->setName(""); // Set name to "", removing from symbol table!
|
|
RemovedSymbol = true;
|
|
assert(Plane.begin() != B);
|
|
}
|
|
}
|
|
|
|
return RemovedSymbol;
|
|
}
|
|
|
|
|
|
// DoSymbolStripping - Remove all symbolic information from a method
|
|
//
|
|
bool opt::DoSymbolStripping(Method *M) {
|
|
return StripSymbolTable(M->getSymbolTable());
|
|
}
|
|
|
|
// DoFullSymbolStripping - Remove all symbolic information from all methods
|
|
// in a module, and all module level symbols. (method names, etc...)
|
|
//
|
|
bool opt::DoFullSymbolStripping(Module *M) {
|
|
// Remove all symbols from methods in this module... and then strip all of the
|
|
// symbols in this module...
|
|
//
|
|
return DoSymbolStripping(M) | StripSymbolTable(M->getSymbolTable());
|
|
}
|