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[Bug target/49244] __sync or __atomic builtins will not emit 'lock bts/btr/btc'
- From: "msebor at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 03 Feb 2016 02:57:16 +0000
- Subject: [Bug target/49244] __sync or __atomic builtins will not emit 'lock bts/btr/btc'
- Auto-submitted: auto-generated
- References: <bug-49244-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=49244
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-02-03
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |4.9.3, 5.3.0, 6.0
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed, though I have no idea about the feasibility of the request. It
might worth to add it to the list of Atomic Optimization Ideas on the Wiki:
https://gcc.gnu.org/wiki/Atomic/GCCMM/Optimizations