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Add __optnone__ attribute for Clang #4715

Merged
merged 3 commits into from
Jan 30, 2018
Merged

Add __optnone__ attribute for Clang #4715

merged 3 commits into from
Jan 30, 2018

Commits on Jan 15, 2018

  1. Add the __optnone__ attribute to help avoid optimizing out MPIR_Break… 

    …point

Thanks to @kiranchandramohan for the suggestion

Signed-off-by: Ralph Castain <rhc@open-mpi.org>
(cherry picked from commit 5c4185a)
    Ralph Castain committed Jan 15, 2018
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  2. Fix the optnone attribute, add extension attribute 

    See how the various compilers handle these

Signed-off-by: Ralph Castain <rhc@open-mpi.org>
(cherry picked from commit db8ebd3)
    Ralph Castain committed Jan 15, 2018
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Commits on Jan 24, 2018

  1. opal_check_attributes: fix __extension__ test 

    Per
https://gcc.gnu.org/onlinedocs/gcc/Alternate-Keywords.html#index-_005f_005fextension_005f_005f,
use __extension__ in a C statement that will actually verify if the
compiler supports it or not.

Signed-off-by: Jeff Squyres <jsquyres@cisco.com>
(cherry picked from commit ff31da6)
    @jsquyres
    jsquyres committed Jan 24, 2018
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