Negative numbers added for sreal class.

gcc/ChangeLog:

2014-11-13  Martin Liska  <mliska@suse.cz>

	* predict.c (propagate_freq): More elegant sreal API is used.
	(estimate_bb_frequencies): Precomputed constants replaced by integer
	constants.
	* sreal.c (sreal::normalize): New function.
	(sreal::to_int): Likewise.
	(sreal::operator+): Likewise.
	(sreal::operator-): Likewise.
	* sreal.h: Definition of new functions added.
ipa-inline uses sreal for as fibonacci_heap template argument.

gcc/ChangeLog:

2014-11-13  Martin Liska  <mliska@suse.cz>

	* ipa-inline.c (edge_badness): long is replaced by sreal
	as fibonacci_heap template type.
	(update_edge_key): Likewise.
	(inline_small_functions): Likewise.
	* sreal.h (inline sreal operator<<): New function added.
	(inline sreal operator>>): Likewise.