class InternalizePass : public Pass {
virtual bool run(Module &M) {
- bool FoundMain = false; // Look for a function named main...
- for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
- if (I->getName() == "main" && !I->isExternal() &&
- I->hasExternalLinkage()) {
- FoundMain = true;
- break;
- }
-
- if (!FoundMain) return false; // No main found, must be a library...
+ Function *MainFunc = M.getMainFunction();
+
+ if (MainFunc == 0 || MainFunc->isExternal())
+ return false; // No main found, must be a library...
bool Changed = false;
// Found a main function, mark all functions not named main as internal.
for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
- if (I->getName() != "main" && // Leave the main function external
+ if (&*I != MainFunc && // Leave the main function external
!I->isExternal() && // Function must be defined here
!I->hasInternalLinkage()) { // Can't already have internal linkage
- I->setInternalLinkage(true);
+ I->setLinkage(GlobalValue::InternalLinkage);
Changed = true;
++NumFunctions;
DEBUG(std::cerr << "Internalizing func " << I->getName() << "\n");
// Mark all global variables with initializers as internal as well...
for (Module::giterator I = M.gbegin(), E = M.gend(); I != E; ++I)
if (!I->isExternal() && I->hasExternalLinkage()) {
- I->setInternalLinkage(true);
+ I->setLinkage(GlobalValue::InternalLinkage);
Changed = true;
++NumGlobals;
DEBUG(std::cerr << "Internalizing gvar " << I->getName() << "\n");