When I turn it on again, it stops at DL_SYSCTL_getClockStatus(void)
The following is the location where I met
/* Check that SYSPLL is disabled before configuration */
while ((DL_SYSCTL_getClockStatus() & (DL_SYSCTL_CLK_STATUS_SYSPLL_OFF)) !=
(DL_SYSCTL_CLK_STATUS_SYSPLL_OFF)) {
;
}