[Bug target/21721] [4.0 regression] fails to assemble, Use of p0 is not valid in this context
------- Additional Comments From sje at cup dot hp dot com 2005-05-27 18:23 -------
I am not sure the underlying problem is fixed. The assembly language error
seems to come from the line:
.pred.rel.mutex p0, p1
p0 is a fixed predicate register and should never show up here. p1 is not used
in this program and due to the way GCC allocates predicate registers on IA64 I
don't think GCC can ever use p1.
The routine emit_predicate_relation_info in config/ia64/ia64.c looks at all
predicate registers to see if it should put out a pred.rel.mutex for them. I
wonder if it should even look at p0. We could have it start at p2 instead. But
maybe it would be better to understand why it thinks it needs a mutex for p0
in this case.
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What |Removed |Added
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CC| |sje at cup dot hp dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21721
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