* tree-ssa-phiopt.c (minmax_replacement, blocks_in_phiopt_order):
	New functions.
	(tree_ssa_phiopt): Use blocks_in_phiopt_order and minmax_replacement.
	Remove unused removed_phis variable.
	(conditional_replacement): Use build1/build2.
	(abs_replacement): Use last_and_only_stmt and build1/build2.

	* gcc.dg/tree-ssa/phi-opt-5.c: New test.

From-SVN: r96439