PR tree-optimization/65053
* tree-ssa-phiopt.c (value_replacement): When moving assign before
cond, either reset VR on lhs or set it to phi result VR.
* gcc.c-torture/execute/pr65053-1.c: New test.
* gcc.c-torture/execute/pr65053-2.c: New test.
From-SVN: r220700
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