rs6000.md (fix_truncdfsi2): Handle e500 doubles.

rs6000.md (fix_truncdfsi2): Handle e500 doubles.

	* config/rs6000/rs6000.md (fix_truncdfsi2): Handle e500
	doubles.
	(floatunssidf2): Same.
	(floatsidf2): Same.
	("extendsfdf2"): New expander.
	(*extendsfdf2_fpr): Rename.
	(*truncdfsf2_fpr): Same.
	(*negdf2_fpr): Same.
	(*absdf2_fpr): Same.
	(*nabsdf2_fpr): Same.
	(*adddf3_fpr): Same.
	(*subdf3_fpr): Same.
	(*muldf3_fpr): Same.
	(*divdf3_fpr): Same.

	* config/rs6000/spe.md ("spe_extendsfdf2"): Remove FIXME comment.
	("spe_fix_truncdfsi2"): Same.
	(spe_floatunssidf2): Same.
	(spe_floatsidf2): Same.

From-SVN: r90379