[Bug gas/26685] Error: invalid register operand size for `movdir64b'

[jbeulich at suse dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26685

Jan Beulich <jbeulich at suse dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jbeulich at suse dot com

--- Comment #3 from Jan Beulich <jbeulich at suse dot com> ---
(In reply to H.J. Lu from comment #0)
> [hjl@gnu-cfl-2 gcc]$ cat x.s
>       movdir64b       (%rdx), %rax
>       movdir64b       (%edx), %eax
>       movdir64b       foo(%rip), %rax
>       movdir64b       foo(%eip), %eax
>       movdir64b       foo(%rip), %eax
> [hjl@gnu-cfl-2 gcc]$ gcc -c x.s 
> x.s: Assembler messages:
> x.s:5: Error: invalid register operand size for `movdir64b'

Which is intended, expected, and correct behavior.

> [hjl@gnu-cfl-2 gcc]$ 
> 
>       movdir64b       foo(%rip), %eax
> 
> should be treated as
> 
>       movdir64b       foo(%eip), %eax

We should not silently change what the programmer has (mistakenly) written, as
it's ambiguous what would be meant: Could be they meant 32-bit addressing, but
could also be they means 64-bit one.

-- 
You are receiving this mail because:
You are on the CC list for the bug.