extend.texi (__builtin_mips_get_fcsr): Document.

extend.texi (__builtin_mips_get_fcsr): Document.

gcc/
	* doc/extend.texi (__builtin_mips_get_fcsr): Document.
	(__builtin_mips_set_fcsr): Likewise.
	* config/mips/mips-ftypes.def: Add MIPS_VOID_FTYPE_USI and
	MIPS_USI_FTYPE_VOID.
	* config/mips/mips-protos.h (mips16_expand_get_fcsr): Declare
	(mips16_expand_set_fcsr): Likewise.
	* config/mips/mips.c (mips16_get_fcsr_stub): New variable.
	(mips16_set_fcsr_stub): Likewise.
	(mips16_get_fcsr_one_only_stub): New class.
	(mips16_set_fcsr_one_only_stub): Likewise.
	(mips16_expand_get_fcsr, mips16_expand_set_fcsr): New functions.
	(mips_code_end): Output the get_fcsr and set_fcsr stubs, if needed.
	(BUILTIN_AVAIL_MIPS16, AVAIL_ALL): New macros.
	(hard_float): New availability predicate.
	(mips_builtins): Add get_fcsr and set_fcsr.
	(mips_expand_builtin): Check BUILTIN_AVAIL_MIPS16.
	* config/mips/mips.md (UNSPEC_GET_FCSR, UNSPEC_SET_FCSR): New unspecs.
	(GET_FCSR_REGNUM, SET_FCSR_REGNUM): New constants.
	(mips_get_fcsr, *mips_get_fcsr, mips_get_fcsr_mips16_<mode>)
	(mips_set_fcsr, *mips_set_fcsr, mips_set_fcsr_mips16_<mode>): New
	patterns.

gcc/testsuite/
	* gcc.target/mips/get-fcsr-1.c, gcc.target/mips/get-fcsr-2.c,
	gcc.target/mips/set-fcsr-1.c, gcc.target/mips/set-fcsr-2.c: New tests.

From-SVN: r207401