bool StripDebugDeclare::runOnModule(Module &M) {
Function *Declare = M.getFunction("llvm.dbg.declare");
-
- if (!Declare)
- return false;
-
std::vector<Constant*> DeadConstants;
- while (!Declare->use_empty()) {
- CallInst *CI = cast<CallInst>(Declare->use_back());
- Value *Arg1 = CI->getOperand(1);
- Value *Arg2 = CI->getOperand(2);
- assert(CI->use_empty() && "llvm.dbg intrinsic should have void result");
- CI->eraseFromParent();
- if (Arg1->use_empty()) {
- if (Constant *C = dyn_cast<Constant>(Arg1))
- DeadConstants.push_back(C);
- else
- RecursivelyDeleteTriviallyDeadInstructions(Arg1, NULL);
+ if (Declare) {
+ while (!Declare->use_empty()) {
+ CallInst *CI = cast<CallInst>(Declare->use_back());
+ Value *Arg1 = CI->getOperand(1);
+ Value *Arg2 = CI->getOperand(2);
+ assert(CI->use_empty() && "llvm.dbg intrinsic should have void result");
+ CI->eraseFromParent();
+ if (Arg1->use_empty()) {
+ if (Constant *C = dyn_cast<Constant>(Arg1))
+ DeadConstants.push_back(C);
+ else
+ RecursivelyDeleteTriviallyDeadInstructions(Arg1, NULL);
+ }
+ if (Arg2->use_empty())
+ if (Constant *C = dyn_cast<Constant>(Arg2))
+ DeadConstants.push_back(C);
}
- if (Arg2->use_empty())
- if (Constant *C = dyn_cast<Constant>(Arg2))
- DeadConstants.push_back(C);
+ Declare->eraseFromParent();
}
- Declare->eraseFromParent();
// Delete all llvm.dbg.global_variables.
for (Module::global_iterator I = M.global_begin(), E = M.global_end();