https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115752
--- Comment #2 from chenglulu <chenglulu at loongson dot cn> --- I have one place that I don't understand, and the description of the TARGET_HARD_REGNO_MODE_OK is as follows: This hook returns true if it is permissible to store a value of mode mode in hard register number regno (or in several registers starting with that one). The default definition returns true unconditionally. On LA, if mode is TFmode and regno is the number of the floating-point register, can this hook return true, or must it return false?
