[Bug target/88952] The asm operator modifiers for rs6000 should be documented like they are for x86

[bergner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88952

Peter Bergner <bergner at gcc dot gnu.org> changed:

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                 CC|                            |bergner at gcc dot gnu.org

--- Comment #15 from Peter Bergner <bergner at gcc dot gnu.org> ---
(In reply to Segher Boessenkool from comment #14)
> Ah no, that is all understood.  What I am commenting on is that you
> have an odd-even register pair (9 and 10), while every GCC I know of
> and/or tested uses an even-odd pair (10 and 11 usually).  Curious.

IIRC, register pairs in the rs6000 backend can be either even/odd or odd/even
registers.  The only exception to that is the _Decimal128 type is forced into
even/odd register pairs due to the hardware instructions used to operate on
them require even/odd register pairs.