Profile-based loop metadata that should be accessed only by using llvm::getLoopEstimatedTripCount and llvm::setLoopEstimatedTripCount.
llvm::getLoopEstimatedTripCount
llvm::setLoopEstimatedTripCount.
Declared in <llvm/IR/ProfDataUtils.h>
<llvm/IR/ProfDataUtils.h>
extern char const* LLVMLoopEstimatedTripCount;