+bool Instruction::isAtomic() const {
+ switch (getOpcode()) {
+ default:
+ return false;
+ case Instruction::AtomicCmpXchg:
+ case Instruction::AtomicRMW:
+ case Instruction::Fence:
+ return true;
+ case Instruction::Load:
+ return cast<LoadInst>(this)->getOrdering() != NotAtomic;
+ case Instruction::Store:
+ return cast<StoreInst>(this)->getOrdering() != NotAtomic;
+ }
+}
+