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[Bug target/36992] Very stange code for _mm_move_epi64
- 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: 1 Aug 2008 12:53:10 -0000
- Subject: [Bug target/36992] Very stange code for _mm_move_epi64
- References: <bug-36992-682@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 2008-08-01 12:53 -------
(In reply to comment #2)
> Google leads me to VC++ reference which says "Moves the lower 64 bits of the
> lower 64 bits of the result, zeroing the upper bits.
>
> I guess inlining and type fixing messes this up very early.
>
Please download Intel64/IA32 SDM from:
http://developer.intel.com/products/processor/manuals/index.htm
_mm_move_epi64 is an intrinsic for "movq".
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36992