re PR tree-optimization/43655 (-ftree-ter causes FAIL: g++.old-deja/g++.law/temps5.C execution test)

	PR tree-optimization/43655
	* tree-ssa-ter.c (is_replaceable_p): Don't use
	gimple_references_memory_p for -O0, instead check for load
	by looking at rhs.

	* g++.dg/opt/pr43655.C: New test.

From-SVN: r167955