tree-ssa-dom.c
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re PR tree-optimization/71947 (x ^ y not folded to 0 if x == y by DOM) · d30078b8PR tree-optimization/71947 * tree-ssa-dom.c (cprop_into_stmt): Avoid replacing A with B, then B with A within a single statement. PR tree-optimization/71947 * gcc.dg/tree-ssa/pr71947-1.c: New test. * gcc.dg/tree-ssa/pr71947-2.c: New test. * gcc.dg/tree-ssa/pr71947-3.c: New test. * gcc.dg/tree-ssa/pr71947-4.c: New test. * gcc.dg/tree-ssa/pr71947-5.c: New test. * gcc.dg/tree-ssa/pr71947-6.c: New test. From-SVN: r240947Jeff Law committed