Sorry if I misunderstood, but... On Fri, 18 Dec 2009, Mohamed Shafi wrote:
> 2009/12/18 Hans-Peter Nilsson <h...@bitrange.com>: > > On Fri, 20 Nov 2009, Mohamed Shafi wrote: > >> I tried implementing the suggestion given by Richard, but got into > >> issues. The GCC frame work is written assuming that there are no modes > >> with HOST_BITS_PER_WIDE_INT < GET_MODE_BITSIZE (mode) < 2 * > >> HOST_BITS_PER_WIDE_INT. > > > > (Not seeing a reply regarding this issue, so here's mine, belated:) > > > > Perhaps a wart, but with a 64-bit HOST_BITS_PER_WIDE_INT, would > > that affect your port? It's not? Just set need_64bit_hwint=yes > > in config.gcc. And send a patch for the introductory comment in > > that file, unless your port already matches the "BITS_PER_WORD > > > 32 bits" condition. > > > Thanks Hans for yourr reply > I have already tried that. What you are suggesting is the first > solution that i got from Richard Henderson. Or rather, a prerequisite to that solution, working around the wart you noted. > I have mentioned the > issues if faced with this in my mail. The GCC frame work is written > assuming that there are no modes with HOST_BITS_PER_WIDE_INT < > GET_MODE_BITSIZE (mode) < 2 * HOST_BITS_PER_WIDE_INT. So i had to hack > at places to get things working. For my target the BITS_PER_WORD == > 32. The mode that i am using is RImode (5bytes) You already mentioned all that in the message to which I replied and quoted above (twice now :-) By you mentioning that equation I have to think you misread and missed the point (sorry if instead it's me); In config.gcc, for the line matching your port, set: need_64bit_hwint=yes Then, GET_MODE_BITSIZE (mode) < HOST_BITS_PER_WIDE_INT for your 40-bit mode, as the equation above yields false for 64 < 40 < 64*2. HTH, good luck and happy holidays. brgds, H-P
