Hi, While working on a port for my custom target I'm looking for some advice on how to define a smaller-than-integer scalar mode. I'm planning to use it together with __attribute__ ((__libgcc_cmp_return__)) mode attribute. In my xx-modes.def file I have PARTIAL_MODE_INT(SI) defined. And my TARGET_LIBGCC_CMP_RETURN_MODE hook is set to a function returning PSImode. However, compilation of the libgcc fails in libgcc2.h at line 172 with an error message: no data type for mode libgcc_cmp_return. The gcc version I'm working on is 4.4.1. PARTIAL_MODE_INT seems to be kind of undocumented feature. Can anybody suggest the steps required to use it properly? Sincerely, -- Lev.
