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[Bug target/45365] X86 FP add and multiply aren't commutative
- From: "hjl dot tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 21 Aug 2010 04:14:44 -0000
- Subject: [Bug target/45365] X86 FP add and multiply aren't commutative
- References: <bug-45365-682@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #4 from hjl dot tools at gmail dot com 2010-08-21 04:14 -------
(In reply to comment #2)
> How are they are not commutative with respect of the NaNs? Is it only when
> both are operands are NaNs, it causes an issue?
>
Yes, only when both operands and NaNs with SSE FP.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45365