-//===- SymbolStripping.cpp - Code to string symbols for methods and modules -=//
+//===- SymbolStripping.cpp - Strip symbols for functions 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)
+// * A function
+// * All functions in a module
+// * All symbols in a module (all function symbols + all module scope symbols)
//
// Notice that:
// * This pass makes code much less readable, so it should only be used in
//
//===----------------------------------------------------------------------===//
+#include "llvm/Transforms/Scalar.h"
#include "llvm/Module.h"
-#include "llvm/Method.h"
#include "llvm/SymbolTable.h"
-#include "llvm/Opt/AllOpts.h"
+#include "llvm/Pass.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;
+ for (SymbolTable::iterator I = SymTab->begin(); I != SymTab->end(); ++I) {
+ std::map<const std::string, Value *> &Plane = I->second;
- map<const string, Value *>::iterator B;
+ SymbolTable::type_iterator B;
while ((B = Plane.begin()) != Plane.end()) { // Found nonempty type plane!
- B->second->setName(""); // Set name to "", removing from symbol table!
+ Value *V = B->second;
+ if (isa<Constant>(V) || isa<Type>(V))
+ SymTab->type_remove(B);
+ else
+ V->setName("", SymTab); // Set name to "", removing from symbol table!
RemovedSymbol = true;
- assert(Plane.begin() != B);
+ assert(Plane.begin() != B && "Symbol not removed from table!");
}
}
return RemovedSymbol;
}
+namespace {
+ struct SymbolStripping : public FunctionPass {
+ virtual bool runOnFunction(Function &F) {
+ return StripSymbolTable(F.getSymbolTable());
+ }
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.setPreservesAll();
+ }
+ };
+ RegisterOpt<SymbolStripping> X("strip", "Strip symbols from functions");
-// DoSymbolStripping - Remove all symbolic information from a method
-//
-bool DoSymbolStripping(Method *M) {
- return StripSymbolTable(M->getSymbolTable());
+ struct FullSymbolStripping : public SymbolStripping {
+ virtual bool doInitialization(Module &M) {
+ return StripSymbolTable(M.getSymbolTable());
+ }
+ };
+ RegisterOpt<FullSymbolStripping> Y("mstrip",
+ "Strip symbols from module and functions");
}
-// DoFullSymbolStripping - Remove all symbolic information from all methods
-// in a module, and all module level symbols. (method names, etc...)
-//
-bool 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());
+Pass *createSymbolStrippingPass() {
+ return new SymbolStripping();
+}
+
+Pass *createFullSymbolStrippingPass() {
+ return new FullSymbolStripping();
}