https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108357
--- Comment #19 from chenglulu <chenglulu at loongson dot cn> --- (In reply to Xi Ruoyao from comment #18) > (In reply to Richard Biener from comment #17) > > Isn't this the same issue as seen in another bug, most targets defining > > TARGET_PROMOTE_PROTOTYPES to hook_bool_const_tree_true but loongarch not? > > That will cause those conversions to be missed. > > Looks like we should define it, as our psABI says: > > In most cases, the unsigned integer data types are zero-extended when stored > in general-purpose register, and the signed integer data types are > sign-extended. However, in the LP64D ABI, unsigned 32-bit types, such as > unsigned int, are stored in general-purpose registers as proper sign > extensions of their 32-bit values. > > IIUC it matches the semantics of TARGET_PROMOTE_PROTOTYPE I also think this should be considered
