[Bug target/66112] __builtin_mul_overflow for int16_t emits poor code

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66112

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #35522|0                           |1
        is obsolete|                            |
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2015-05-12
           Assignee|unassigned at gcc dot gnu.org      |jakub at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 35523
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35523&action=edit
gcc6-pr66112-1.patch

Generic fix, to improve minimum precision computation for unsigned values.