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Re: powerpc regnames



On Oct 19, 2007, at 11:04 AM, Andreas Schwab wrote:


Tristan Gingold <gingold@adacore.com> writes:

Hi,

when eabispe is used, gcc (head and for a long time) generates register
names such as in:
cror 4*%cr7+gt,4*%cr6+gt,4*%cr7+gt

[...]


I think this is a bug in gcc, the '%' prefixes should not be there.
AFAIK the ppc assembler has never supported a register prefix, nor does
it need one.

I am confused by your answer. Usually '%' prefixed registers work well, eg:


$ ../as-new -mregnames t1.s
$ cat t1.s
        .text
        stwu %r1,-24(%r1)

(You of course need to use -mregnames).
However in the previous case (cror 4*%cr7+gt,4*%cr6+gt,4*%cr7+gt) it doesn't work
because %cr7 is part of an expression and not recognized in this case (as
opposed to 'gt' which is always emitted by gcc).


Tristan.





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