aarch64.c (TARGET_ATOMIC_ASSIGN_EXPAND_FENV): New define.

aarch64.c (TARGET_ATOMIC_ASSIGN_EXPAND_FENV): New define.

2014-05-23  Kugan Vivekanandarajah  <kuganv@linaro.org>

	* config/aarch64/aarch64.c (TARGET_ATOMIC_ASSIGN_EXPAND_FENV): New
	define.
	* config/aarch64/aarch64-protos.h (aarch64_atomic_assign_expand_fenv):
	New function declaration.
	* config/aarch64/aarch64-builtins.c (aarch64_builtins) : Add
	AARCH64_BUILTIN_GET_FPCR, AARCH64_BUILTIN_SET_FPCR.
	AARCH64_BUILTIN_GET_FPSR and AARCH64_BUILTIN_SET_FPSR.
	(aarch64_init_builtins) : Initialize builtins
	__builtins_aarch64_set_fpcr, __builtins_aarch64_get_fpcr.
	__builtins_aarch64_set_fpsr and __builtins_aarch64_get_fpsr.
	(aarch64_expand_builtin) : Expand builtins __builtins_aarch64_set_fpcr
	__builtins_aarch64_get_fpcr, __builtins_aarch64_get_fpsr,
	and __builtins_aarch64_set_fpsr.
	(aarch64_atomic_assign_expand_fenv): New function.
	* config/aarch64/aarch64.md (set_fpcr): New pattern.
	(get_fpcr) : Likewise.
	(set_fpsr) : Likewise.
	(get_fpsr) : Likewise.
	(unspecv): Add UNSPECV_GET_FPCR and UNSPECV_SET_FPCR, UNSPECV_GET_FPSR
	 and UNSPECV_SET_FPSR.
	* doc/extend.texi (AARCH64 Built-in Functions) : Document
	__builtins_aarch64_set_fpcr, __builtins_aarch64_get_fpcr.
	__builtins_aarch64_set_fpsr and __builtins_aarch64_get_fpsr.

From-SVN: r210828