On 04/11/2012 06:53 PM, Peter Bigot wrote: > On Mon, Mar 5, 2012 at 10:38 AM, Bernd Schmidt <ber...@codesourcery.com> > wrote: >> On 03/05/2012 05:24 PM, Peter Bigot wrote: >>> And is there any reason (other than it doesn't seem to have been done >>> before) to believe PSImode is the wrong way to support a >>> general-purpose 20-bit integral type in gcc? >> >> If you're using 4.7.0, it should be possible to use FRACTIONAL_INT_MODE >> and get reasonable results. However, it hasn't been tested much, since >> the final bits of the patch series which would have added 40 bit int >> support to the C frontend didn't make it in. See the discussion following >> http://gcc.gnu.org/ml/gcc-patches/2011-07/msg00079.html > > I stuck with PARTIAL_INT_MODE instead of FRACTIONAL_INT_MODE because > in my case the new type should not appear in the widen/narrow > hierarchy of MODE_INT,
May I ask why not? Which problems do you run into? > I've filed two bug reports for cases where BITSIZE needs to be updated > to PRECISION. Patches are best submitted to gcc-patches directly. Do you have a copyright assignment? Bernd
