[Bug target/97387] we are near 2021, add carry intrinsic still does the wrong thing and generates silly code.

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97387

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|rtl-optimization            |target

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Trying 10, 17 -> 18:
   10: r88:QI=ltu(flags:CCC,0)
      REG_DEAD flags:CCC
   17: {flags:CCC=cmp(r88:QI-0x1,r88:QI);clobber scratch;}
      REG_DEAD r88:QI
   18:
{flags:CCC=cmp(zero_extend(ltu(flags:CCC,0)+r106:DI+r107:DI),zero_extend(r107:DI)+ltu(flags:CCC,0));r109:DI=ltu(flags:CCC,0)+r106:DI+r107:DI
;}
      REG_DEAD r107:DI
      REG_DEAD r106:DI
Can't combine i1 into i3