PR tree-optimization/61912
	PR tree-optimization/77485
	* tree-ssa-dse.c: Include expr.h.
	(maybe_trim_constructor_store): New function.
	(maybe_trim_partially_dead_store): Call maybe_trim_constructor_store.

	PR tree-optimization/61912
	PR tree-optimization/77485
	* g++.dg/tree-ssa/ssa-dse-1.C: New test.
	* gcc.dg/tree-ssa/pr30375: Adjust expected output.
	* gcc.dg/tree-ssa/ssa-dse-24.c: New test.

From-SVN: r244443