* config/rs6000/htm.md (UNSPEC_HTM_FENCE): New.

	* config/rs6000/htm.md (UNSPEC_HTM_FENCE): New.
	(tabort, tabort<wd>c, tabort<wd>ci, tbegin, tcheck, tend,
	trechkpt, treclaim, tsr, ttest): Rename define_insns from this...
	(*tabort, *tabort<wd>c, *tabort<wd>ci, *tbegin, *tcheck, *tend,
	*trechkpt, *treclaim, *tsr, *ttest): ...to this.  Add memory barrier.
	(tabort, tabort<wd>c, tabort<wd>ci, tbegin, tcheck, tend,
	trechkpt, treclaim, tsr, ttest): New define_expands.
	* config/rs6000/rs6000-c.c (rs6000_target_modify_macros): Define
	__TM_FENCE__ for htm.
	* doc/extend.texi: Update documentation for htm builtins.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@228827 138bc75d-0d04-0410-961f-82ee72b054a4