On Wed, Oct 15, 2025 at 11:36:29AM +0200, Richard Biener wrote:
> > This patch has been tested on x86_64-pc-linux-gnu with make bootstrap
> > and make -k check with no new failures. Ok for mainline?
>
> LGTM. Please leave Jakub time to comment though.
Ok for me.
> I'll note that for "full" TImode or larger mode support the currently
> unsigned HOST_WIDE_INT last_set_nonzero_bits and nonzero_bits
> fields would also need to be enlarged. Not sure how well using
> of sign_bit_copies but not nonzero_bits is guarded within combine.
We'd need to use wide_int or say offset_int or FIXED_WIDE_INT (128)
instead of unsigned HOST_WIDE_INT for nonzero_bits.
I think that would be a good idea, because in many cases for TImode
we just punt and TImode is supported on quite a few targets, but it
would be a larger change.
Jakub
