i386.c (standard_80387_constant_p): Accept TFmode constants too.

i386.c (standard_80387_constant_p): Accept TFmode constants too.

	* i386.c (standard_80387_constant_p): Accept TFmode constants too.
	(init_ext_80387_constants): Likewise.
	(standard_80387_constant_rtx): Likewise.
	* i386.md (atanxf): Disable for TARGET_128BIT_LONG_LONG
	(atantf): Disable for !TARGET_128BIT_LONG_LONG
	(fyl2x_sfxf3, fyl2x_dfxf3): Accept TFmode operands.
	(fyl2x_xfxf3, fyl2x_tfxf3): Enable/disable as needed.
	(fscale_sfxf3, fscale_dfxf3): Accept TFmode operands.
	(fscale_xfxf3, fscale_tfxf3): Enable/disable as needed.
	(frndinttf2): New.
	(f2xm1tf2): New.
	(exp?f2): Use expsf2_tf when needed.
	(exp?f2_tf): New.
	(exptf): New.

From-SVN: r68693