PERFORM_HOLE_CHECK 4104 src/hydrogen-instructions.h     HoleCheckMode hole_check_mode = PERFORM_HOLE_CHECK)
PERFORM_HOLE_CHECK 4132 src/hydrogen-instructions.h     return hole_check_mode_ == PERFORM_HOLE_CHECK;
PERFORM_HOLE_CHECK 5789 src/hydrogen.cc       PERFORM_HOLE_CHECK;