extend.texi (x86 transactional memory intrinsics): Reorganize discussion of _xbegin.
2015-02-27 Sandra Loosemore <sandra@codesourcery.com> gcc/ * doc/extend.texi (x86 transactional memory intrinsics): Reorganize discussion of _xbegin. Clarify that the return value is a bit mask. Expand example and move to end of section. From-SVN: r221068
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