* x86-tune.def (X86_TUNE_SSE_UNALIGNED_LOAD_OPTIMAL): Enable for generic.
	(X86_TUNE_SSE_UNALIGNED_STORE_OPTIMAL): Likewise.
	(X86_TUNE_FOUR_JUMP_LIMIT): Drop for generic and buldozer.
	(X86_TUNE_PAD_RETURNS): Drop for buldozer chips.
	(X86_TUNE_AVOID_VECTOR_DECODE): Drop for generic.
	(X86_TUNE_REASSOC_FP_TO_PARALLEL): Enable for generic.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@203012 138bc75d-0d04-0410-961f-82ee72b054a4

	* config/i386/x86-tune.def: Add documentation for each of the options;
	add whitespace.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@203013 138bc75d-0d04-0410-961f-82ee72b054a4