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[Bug target/40537] wrong instr. dependency with some SSE intrinsics
- 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: 24 Jun 2009 13:09:11 -0000
- Subject: [Bug target/40537] wrong instr. dependency with some SSE intrinsics
- References: <bug-40537-17873@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #8 from hjl dot tools at gmail dot com 2009-06-24 13:09 -------
(In reply to comment #6)
> _mm_load_sd( (const doubleA*)(from) )
>
> does not work because the prototype of _mm_load_sd does not have a type
> with the may-alias attribute, so it gets stripped again.
>
I think movsd/movhpd intrinsics with union of double/float or
movlps/movhps intrinsics should be used.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40537