//
// Notice that:
// * This pass has a habit of making definitions be dead. It is a good idea
-// to to run a DIE pass sometime after running this pass.
+// to run a DIE pass sometime after running this pass.
//
//===----------------------------------------------------------------------===//
#include "llvm/Constant.h"
#include "llvm/Instruction.h"
#include "llvm/Pass.h"
-#include "llvm/Support/Compiler.h"
#include "llvm/Support/InstIterator.h"
#include "llvm/ADT/Statistic.h"
#include <set>
STATISTIC(NumInstKilled, "Number of instructions killed");
namespace {
- struct VISIBILITY_HIDDEN ConstantPropagation : public FunctionPass {
+ struct ConstantPropagation : public FunctionPass {
static char ID; // Pass identification, replacement for typeid
- ConstantPropagation() : FunctionPass((intptr_t)&ID) {}
+ ConstantPropagation() : FunctionPass(ID) {
+ initializeConstantPropagationPass(*PassRegistry::getPassRegistry());
+ }
bool runOnFunction(Function &F);
AU.setPreservesCFG();
}
};
-
- char ConstantPropagation::ID = 0;
- RegisterPass<ConstantPropagation> X("constprop",
- "Simple constant propagation");
}
+char ConstantPropagation::ID = 0;
+INITIALIZE_PASS(ConstantPropagation, "constprop",
+ "Simple constant propagation", false, false)
+
FunctionPass *llvm::createConstantPropagationPass() {
return new ConstantPropagation();
}
// Remove the dead instruction.
WorkList.erase(I);
- I->getParent()->getInstList().erase(I);
+ I->eraseFromParent();
// We made a change to the function...
Changed = true;