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From: Julian S. <js...@ac...> - 2006-01-31 04:37:18
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> modes. A colleague of mine who works on glibc tells me that there are > many places where glibc routines depend on the ability to set rounding > modes I only know of one, the floor/ceil routines. > and there are more in the pipeline. Do you have any more details of this? > I noticed that the "rounding mode project" is no longer on the Valgrind > web site. Is there anyone who has plans to implement full support for > PPC rounding modes? I'm looking at the problem right now. The current kludges work ok for gcc on ppc-linux, but xlc-compiled code is a problem. The real difficulty is not making it work correctly, but to minimise the performance loss resulting from having to ensure the host machine's rounding mode matches the guest's rounding mode, and having to do this in a way which is expressible in the IR representation. Seems to me that fixing it properly is now pretty much essential. J |