* config/pa/pa.md (negdf2): Condition on !flag_signed_zeros instead of

	flag_unsafe_math_optimizations.
	(negsf2): Likewise.
	Move fnegabs related patterns together.  Only use fmpynfadd instruction
	to negate a multiply if !flag_signed_zeros is true.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@167159 138bc75d-0d04-0410-961f-82ee72b054a4