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PR tree-optimization/71437 * tree-vrp.c (simplify_stmt_for_jump_threading): Lookup the conditional in the hash table first. (vrp_dom_walker::before_dom_children): Extract condition from ASSERT_EXPR. Record condition, its inverion and any implied conditions as well. PR tree-optimization/71437 * gcc.dg/tree-ssa/pr71437.c: New test. * gcc.dg/tree-ssa/20040305-1.c: Test earlier dump. * gcc.dg/tree-ssa/ssa-dom-thread-4.c: Adjust for jump threads now caught by VRP, but which were previously caught by DOM. From-SVN: r246225
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