[Boost-bugs] [Boost C++ Libraries] #6692: spinlock_gcc_arm.hpp uses deprecated assembly instructions on ARMv7

Subject: [Boost-bugs] [Boost C++ Libraries] #6692: spinlock_gcc_arm.hpp uses deprecated assembly instructions on ARMv7
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-03-16 18:29:53

#6692: spinlock_gcc_arm.hpp uses deprecated assembly instructions on ARMv7
------------------------------------------+---------------------------------
 Reporter:  Ben Craig <ben.craig@…>       |        Type:  Bugs        
   Status:  new                           |   Milestone:  Boost 1.50.0
Component:  None                          |     Version:  Boost 1.49.0
 Severity:  Problem                       |    Keywords:              
------------------------------------------+---------------------------------
 spinlock_gcc_arm implements try_lock() in terms of the SWP instruction.
 This instruction is deprecated due to performance issues, and it causes
 linkers to emit tons of warnings.  I have attached a patch that implements
 try_lock in terms of LDREX and STREX, which are the preferred replacements
 for SWP.

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Ticket URL: <https://svn.boost.org/trac/boost/ticket/6692>
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