re PR rtl-optimization/60501 (LRA emits add patterns which might clobber cc)

re PR rtl-optimization/60501 (LRA emits add patterns which might clobber cc)

2014-03-24  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

	PR rtl-optimization/60501
	* optabs.def (addptr3_optab): New optab.
	* optabs.c (gen_addptr3_insn, have_addptr3_insn): New function.
	* doc/md.texi ("addptrm3"): Document new RTL standard expander.
	* expr.h (gen_addptr3_insn, have_addptr3_insn): Add prototypes.

	* lra.c (emit_add3_insn): Use the addptr pattern if available.

	* config/s390/s390.md ("addptrdi3", "addptrsi3"): New expanders.

From-SVN: r208796