mips.md (UNSPEC_COMPARE_AND_SWAP_12): New unspec_volitile.

mips.md (UNSPEC_COMPARE_AND_SWAP_12): New unspec_volitile.

gcc/
2008-04-23  David Daney  <ddaney@avtrex.com>

	* config/mips/mips.md (UNSPEC_COMPARE_AND_SWAP_12): New
	unspec_volitile.
	(UNSPEC_SYNC_OLD_OP, UNSPEC_SYNC_NEW_OP, UNSPEC_SYNC_EXCHANGE,
	UNSPEC_MEMORY_BARRIER, UNSPEC_SET_GOT_VERSION,
	UNSPEC_UPDATE_GOT_VERSION): Renumber.
	(sync_compare_and_swap<mode>): New expand for QI and HI modes.
	(compare_and_swap_12): New insn.
	* config/mips/mips-protos.h (mips_expand_compare_and_swap_12): Declare.
	* config/mips/mips.c (mips_force_binary): New function.
	(mips_emit_int_order_test, mips_expand_synci_loop): Use it.
	(mips_expand_compare_and_swap_12): New function.
	* config/mips/mips.h (MIPS_COMPARE_AND_SWAP_12): New macro.

gcc/testsuite/
	* gcc.target/mips/gcc-have-sync-compare-and-swap-1.c: Expect
	__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1 and
	__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 to be defined.
	* gcc.target/mips/gcc-have-sync-compare-and-swap-2.c: Likewise.

From-SVN: r134695