[LLVMbugs] [Bug 219] [x86] X86 backend code generates -0.0 as +0.0

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.cs.uiuc.edu/bugs/show_bug.cgi?id=219

sabre at nondot.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED



------- Additional Comments From sabre at nondot.org  2004-02-02 13:35 -------
This patch fixes the bug (do not trust == to compare FP values!):
http://mail.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20040202/011066.html

While I was at it, I also added this patch:
http://mail.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20040202/011074.html

which causes the X86 code generator to generate the 'fchs' instruction to negate
FP numbers efficiently.

-Chris



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