[Bug go/60790] libatomic convenience library selects IFUNC implementation before obtaining cpu info.

[gary at intrepid dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60790

Gary Funck <gary at intrepid dot com> changed:

           What    |Removed                     |Added
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  Attachment #32569|0                           |1
        is obsolete|                            |

--- Comment #1 from Gary Funck <gary at intrepid dot com> ---
Created attachment 32570
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32570&action=edit
libatomic cpuinfo patch

Test for edx when checking bit_CMPXCHG8B.