#include "llvm/Transforms/Scalar.h"
#include "llvm/BasicBlock.h"
#include "llvm/Instructions.h"
+#include "llvm/IntrinsicInst.h"
#include "llvm/Pass.h"
#include "llvm/Support/CFG.h"
-#include "llvm/Support/Compiler.h"
#include "llvm/Support/InstIterator.h"
#include "llvm/ADT/DepthFirstIterator.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
-#include "llvm/Transforms/Utils/DbgInfoUtils.h"
-
using namespace llvm;
STATISTIC(NumRemoved, "Number of instructions removed");
namespace {
- struct VISIBILITY_HIDDEN ADCE : public FunctionPass {
+ struct ADCE : public FunctionPass {
static char ID; // Pass identification, replacement for typeid
ADCE() : FunctionPass(&ID) {}
// Collect the set of "root" instructions that are known live.
for (inst_iterator I = inst_begin(F), E = inst_end(F); I != E; ++I)
if (isa<TerminatorInst>(I.getInstructionIterator()) ||
- I->mayWriteToMemory()) {
+ isa<DbgInfoIntrinsic>(I.getInstructionIterator()) ||
+ I->mayHaveSideEffects()) {
alive.insert(I.getInstructionIterator());
worklist.push_back(I.getInstructionIterator());
}
NumRemoved++;
(*I)->eraseFromParent();
}
-
- if (!worklist.empty()) {
- RemoveDeadDbgIntrinsics(F);
- return true;
- }
- return false;
+ return !worklist.empty();
}
FunctionPass *llvm::createAggressiveDCEPass() {