2007-07-10  David Daney  <ddaney@avtrex.com>

	* config/mips/mips.h (ISA_HAS_SYNCI): New target capability
	predicate.
	(INITIALIZE_TRAMPOLINE): Emit clear_cache insn instead of  library
	call.
	* config/mips/mips.c (mips_expand_synci_loop): New function.
	* config/mips/mips.md (UNSPEC_CLEAR_HAZARD): New constant.
	(UNSPEC_RDHWR): Same.
	(UNSPEC_SYNCI): Same.
	(UNSPEC_SYNC): Same.
	(clear_cache): New expand.
	(sync): New insn.
	(synci): Same.
	(rdhwr): Same.
	(clear_hazard): Same.
	* config/mips/mips-protos.h (mips_expand_synci_loop): Declare
	function.
	* testsuite/gcc.target/mips/clear-cache-1.c: New test.
	* testsuite/gcc.target/mips/clear-cache-2.c: New test.

From-SVN: r126537