On Tue, 5 Jul 2016, Richard Biener wrote:
given widest_int has only precision of TImode on x86_64?
Is that the case? The comments say:
It is really finite precision math where the precision is 4 times the
size of the largest integer that the target port can represent.
And the target has
/* Keep the OI and XI modes from confusing the compiler into thinking
that these modes could actually be used for computation. They are
only holders for vectors during data movement. */
#define MAX_BITSIZE_MODE_ANY_INT (128)
I would thus expect widest_int to have at 512 bits on x86_64 (possibly
more depending on the exact definition of largest integer).
--
Marc Glisse
