[Bug tree-optimization/110362] Range information on lower bytes of __uint128_t

roger at nextmovesoftware dot com gcc-bugzilla@gcc.gnu.org
Thu Jul 6 12:37:43 GMT 2023


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110362

Roger Sayle <roger at nextmovesoftware dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|rtl-optimization            |tree-optimization
                 CC|                            |roger at nextmovesoftware dot com

--- Comment #2 from Roger Sayle <roger at nextmovesoftware dot com> ---
The good news is that this has been fixed in the RTL optimizers/x86 backend,
and GCC-14 currently produces the optimal "mov rax, rdx".  However, I agree
with Richard Biener that could/should also be fixed (earlier) at the
tree-level.


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