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Re: Fix recent SPEC2000/x86-64 ICEs
- From: Roger Sayle <roger at eyesopen dot com>
- To: Jan Hubicka <jh at suse dot cz>
- Cc: gcc-patches at gcc dot gnu dot org, <rth at redhat dot com>
- Date: Sun, 29 Jun 2003 17:03:53 -0600 (MDT)
- Subject: Re: Fix recent SPEC2000/x86-64 ICEs
Hi Jan,
> Roger's patches to add math builtins are not working very well on x86-64
> where we use TARGET_128BIT_LONG_DOUBLE so we must use TFmode instead.
One quick question. On x86-64 in 128-bit long double mode does the x87
instruction "fldpi" load an 80-bit or 128-bit approximation to pi? I
know nothing about AMD64, but it looks like your patch just extends the
truncated 80-bit value. Its just that this seems a bit odd.
Roger
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