PR tree-optimization/45612
	* ipa-split.c (test_nonssa_use): Remove bogus ATTRIBUTE_UNUSED.
	Test LABEL_DECLs as well.  Fix formatting issues.
	(verify_non_ssa_vars): Return false for a GIMPLE_LABEL statement
	whose label is present in NON_SSA_VARS.
	(mark_nonssa_use): Remove bogus ATTRIBUTE_UNUSED.  Handle LABEL_DECLs
	as well.  Fix formatting issues.
	(visit_bb): Fix typos and formatting issue.

From-SVN: r165221