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[Bug target/55147] x86: wrong code for 64-bit load
- From: "ubizjak at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 31 Oct 2012 15:47:46 +0000
- Subject: [Bug target/55147] x86: wrong code for 64-bit load
- Auto-submitted: auto-generated
- References: <bug-55147-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55147
--- Comment #2 from Uros Bizjak <ubizjak at gmail dot com> 2012-10-31 15:47:46 UTC ---
> can fix the reg overlap problem between address of operands[1] and high part of
> operands[0]. That said, I wonder what is the advantage of having bswapdi2
> patter on i?86 at all that the generic expand_doubleword_bswap can't handle.
If generic code creates similar assembly, then I'm all for removing this
pattern.