gcc/
2008-xx-xx  Richard Sandiford  <rdsandiford@goolemail.com>
	    Peter Fuerst  <post@pfrst.de>

	* doc/invoke.texi: Document -mr10k-cache-barrier=.
	* doc/extend.texi: Document __builtin_mips_cache.
	* config/mips/mips-ftypes.def: Add a (VOID, SI, CVPOINTER) entry.
	* config/mips/mips.opt (mr10k-cache-barrier=): New option.
	* config/mips/mips.h (TARGET_CPU_CPP_BUILTINS): Define
	__GCC_HAVE_BUILTIN_MIPS_CACHE.
	(TARGET_CACHE_BUILTIN, ISA_HAS_CACHE): New macros.
	* config/mips/mips.c (mips_r10k_cache_barrier_setting): New enum.
	(set_push_mips_isas): New variable.
	(mips_r10k_cache_barrier): New variable.
	(cache): New availability predicate.
	(mips_builtins): Add an entry for __builtin_mips_cache.
	(mips_build_cvpointer_type): New function.
	(MIPS_ATYPE_CVPOINTER): New macro.
	(mips_prepare_builtin_arg): Only use the insn's mode if the rtx's
	mode is VOIDmode.
	(r10k_simplified_address_p, r10k_simplify_address)
	(r10k_uncached_address_p, r10k_safe_address_p)
	(r10k_needs_protection_p_1, r10k_needs_protection_p_store)
	(r10k_needs_protection_p_call, r10k_needs_protection_p)
	(r10k_insert_cache_barriers): New functions.
	(mips_reorg_process_insns): Delete cache barriers after a
	branch-likely instruction.
	(mips_reorg): Call r10k_insert_cache_barriers.
	(mips_handle_option): Handle OPT_mr10k_cache_barrier_.
	* config/mips/mips.md (UNSPEC_MIPS_CACHE): New constant.
	(UNSPEC_R10K_CACHE_BARRIER): Likewise.
	(mips_cache, r10k_cache_barrier): New define_insns.

gcc/testsuite/
	* gcc.target/mips/mips.exp (dg-mips-options): Make
	-mr10k-cache-barrier=* imply -mips3 or above.
	* gcc.target/mips/cache-1.c: New test.
	* gcc.target/mips/r10k-cache-barrier-1.c: Likewise.
	* gcc.target/mips/r10k-cache-barrier-2.c: Likewise.
	* gcc.target/mips/r10k-cache-barrier-3.c: Likewise.
	* gcc.target/mips/r10k-cache-barrier-4.c: Likewise.
	* gcc.target/mips/r10k-cache-barrier-5.c: Likewise.
	* gcc.target/mips/r10k-cache-barrier-6.c: Likewise.
	* gcc.target/mips/r10k-cache-barrier-7.c: Likewise.
	* gcc.target/mips/r10k-cache-barrier-8.c: Likewise.
	* gcc.target/mips/r10k-cache-barrier-9.c: Likewise.
	* gcc.target/mips/r10k-cache-barrier-10.c: Likewise.
	* gcc.target/mips/r10k-cache-barrier-11.c: Likewise.
	* gcc.target/mips/r10k-cache-barrier-12.c: Likewise.
	* gcc.target/mips/r10k-cache-barrier-13.c: Likewise.
	* gcc.target/mips/r10k-cache-barrier-14.c: Likewise.
	* gcc.target/mips/r10k-cache-barrier-15.c: Likewise.

From-SVN: r140055