https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88952
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |powerpc-*-*
Status|RESOLVED |NEW
Keywords| |documentation
Last reconfirmed| |2019-01-21
Component|inline-asm |target
Resolution|INVALID |---
Ever confirmed|0 |1
Summary|[powerpc] asm input from C |The asm operator modifiers
|expression with type larger |for rs6000 should be
|than GPRs loads wrong value |documented like they are
| |for x86
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Christopher Leonard from comment #2)
> Surely then in the example if r9 is loaded with high and r10 with low then
> %0 should be r10, not r9?
%0 represents the first register which in this case is r9. The pair is r9:r10
to get the low part use %L0 .
Really this should be documented like they are for x86:
https://gcc.gnu.org/onlinedocs/gcc-8.2.0/gcc/Extended-Asm.html#x86-Operand-Modifiers
