I don't think it is required. For example, PowerPC port supports V8SImode, but I don't see OImode. Just sometimes it could come handy to have the equal size scalar mode.
Cheers, Bingfeng > -----Original Message----- > From: gcc-ow...@gcc.gnu.org [mailto:gcc-ow...@gcc.gnu.org] On Behalf Of > Matthew Fortune > Sent: 11 December 2014 13:27 > To: gcc@gcc.gnu.org > Subject: Vector modes and the corresponding width integer mode > > Hi, > > I'm working on MIPS SIMD support for MSA. Can anyone point me towards > information about the need for an integer mode of equal size to any > supported vector mode? > > I.e. if I support V4SImode is there any core GCC requirement that > TImode is also supported? > > Any guidance is appreciated. The MIPS port already has limited support > for TImode for 64-bit targets which makes it all the more difficult to > figure out if there is a relationship between vector modes and integer > modes. > > Thanks, > Matthew
