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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 -=//
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//
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// This file implements stripping symbols out of symbol tables.
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//
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// Specifically, this allows you to strip all of the symbols out of:
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// * A method
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// * All methods in a module
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// * All symbols in a module (all method symbols + all module scope symbols)
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//
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// Notice that:
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// * This pass makes code much less readable, so it should only be used in
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// situations where the 'strip' utility would be used (such as reducing
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// code size, and making it harder to reverse engineer code).
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Optimizations/AllOpts.h"
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#include "llvm/Module.h"
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#include "llvm/Method.h"
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#include "llvm/SymbolTable.h"
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static bool StripSymbolTable(SymbolTable *SymTab) {
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if (SymTab == 0) return false; // No symbol table? No problem.
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bool RemovedSymbol = false;
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for (SymbolTable::iterator I = SymTab->begin(); I != SymTab->end(); ++I) {
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map<const string, Value *> &Plane = I->second;
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map<const string, Value *>::iterator B;
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while ((B = Plane.begin()) != Plane.end()) { // Found nonempty type plane!
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B->second->setName(""); // Set name to "", removing from symbol table!
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RemovedSymbol = true;
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assert(Plane.begin() != B);
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}
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}
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return RemovedSymbol;
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}
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// DoSymbolStripping - Remove all symbolic information from a method
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//
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bool opt::DoSymbolStripping(Method *M) {
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return StripSymbolTable(M->getSymbolTable());
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}
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// DoFullSymbolStripping - Remove all symbolic information from all methods
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// in a module, and all module level symbols. (method names, etc...)
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//
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bool opt::DoFullSymbolStripping(Module *M) {
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// Remove all symbols from methods in this module... and then strip all of the
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// symbols in this module...
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//
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return DoSymbolStripping(M) | StripSymbolTable(M->getSymbolTable());
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}
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