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[Bug target/81664] __attribute__((target("movbe"))) does not work
- From: "bugzilla at poradnik-webmastera dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 02 Aug 2017 13:51:53 +0000
- Subject: [Bug target/81664] __attribute__((target("movbe"))) does not work
- Auto-submitted: auto-generated
- References: <bug-81664-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81664
Daniel Fruzynski <bugzilla@poradnik-webmastera.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|INVALID |---
--- Comment #3 from Daniel Fruzynski <bugzilla@poradnik-webmastera.com> ---
I also found that release notes for gcc 4.5
(https://gcc.gnu.org/gcc-4.5/changes.html) says that it is supported on
IA-32/x86-64:
"A new -mmovbe option is now available to enable GCC to use the movbe
instruction to implement __builtin_bswap32 and __builtin_bswap64.". Now this
issue looks like a regression for me.