SmallVector<Instruction*, 128> Worklist;
// Collect the set of "root" instructions that are known live.
- for (Instruction &I : inst_range(F)) {
+ for (Instruction &I : instructions(F)) {
if (isa<TerminatorInst>(I) || isa<DbgInfoIntrinsic>(I) || I.isEHPad() ||
I.mayHaveSideEffects()) {
Alive.insert(&I);
// which have no side effects and do not influence the control flow or return
// value of the function, and may therefore be deleted safely.
// NOTE: We reuse the Worklist vector here for memory efficiency.
- for (Instruction &I : inst_range(F)) {
+ for (Instruction &I : instructions(F)) {
if (!Alive.count(&I)) {
Worklist.push_back(&I);
I.dropAllReferences();