[Bug target/39911] The 'z' suffix doesn't work with 16bit integer insn

["hjl dot tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #4 from hjl dot tools at gmail dot com  2009-04-26 19:03 -------
(In reply to comment #3)
> (In reply to comment #1)
> > Created an attachment (id=17716)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=17716&action=view) [edit]
> > A patch
> > 
> > Since "%z' never really worked on integer instructions, this
> > patch makes "%Z" for integer instructions only while providing
> > backward compatibility for existing asm statements.
> 
> But this issue arises because users want %z on integer insn!
> 
> My proposal is, to enhance %Z to handle all x87 operands/instructions and leave
> %z for integer instructions.  I hope there is no users of %z with x87 insns.
> 

It may break existing working asm statements with "%z" on x87
instructions. Since "%z" never really worked on asm statements
with "%z" on integer insns, there is little risk to break
existing working asm statements with "%z" for my proposal.
With older gcc, asm statements with "%z" on integer insns
don't work. With fixed gcc, they can use "%Z".


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39911