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Date:      Sun, 19 May 2002 13:19:07 -0700 (PDT)
From:      Marcel Moolenaar <marcel@FreeBSD.org>
To:        cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   cvs commit: src/sys/ia64/include atomic.h
Message-ID:  <200205192019.g4JKJ7r08249@freefall.freebsd.org>

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marcel      2002/05/19 13:19:07 PDT

  Modified files:
    sys/ia64/include     atomic.h 
  Log:
  Simplify IA64_CMPXCHG to avoid having braced-groups in expressions.
  As a minor positive side-effect, code at -O0 is more optimal. As a
  minor negative side-effect, certain boundary cases yield no better
  code than non-boundary cases. For example, atomic_set_acq_32(p, 0)
  does a useless logical OR with value 0. This was previously elimina-
  ted as part of if/while optimizations. Non-boundary cases yield
  identical code at -O1 and -O2.
  
  Revision  Changes    Path
  1.6       +23 -21    src/sys/ia64/include/atomic.h

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