i386.md (acos<mode>2): Rename from acossf2 and acosdf2.

i386.md (acos<mode>2): Rename from acossf2 and acosdf2.

	* config/i386/i386.md (acos<mode>2): Rename from acossf2 and acosdf2.
	Macroize expander using X87MODEF12 mode macro.  Extend operand 1
	to XFMode, use acosxf2 and truncate result to requested mode.
	Use SSE_FLOAT_MODE_P to disable patterns for SSE math.
	(asin<mode>2): Similarly, with asin expanders.
	(*fscalexf4_i387): Rename from *fscalexf4.
	(expNcorexf3): New expander.
	(expxf2, exp10xf2, exp2xf2): Use expNcorexf3 expander.
	(exp<mode>2): Rename from expsf2 and expdf2. Macroize expander using
	X87MODEF12 mode macro.  Extend operand 1 to XFMode, use expxf2 and
	truncate result to requested mode. Use SSE_FLOAT_MODE_P to disable
	patterns for SSE math.
	(exp10<mode>2): Similarly, with exp10 expanders.
	(exp2<mode>2): Similarly, with exp2 expanders.
	(expm1<mode>2): Similarly, with expm1 expanders.
	(ldexp<mode>3): Similarly, with ldexp expanders.
	(log<mode>2, log10<mode>2, log2<mode>2, log1p<mode>2, logb<mode>2):
	Use gen_truncxf<mode>2_i387_noop to truncate result.

From-SVN: r120966