re PR tree-optimization/23128 (VRP fails for unsigned values)
2005-08-05 James A. Morrison <phython@gcc.gnu.org> PR tree-optimization/23128 * tree-vrp.c (vrp_int_const_binop): Check if unsigned addition or subtraction wrap, and set TREE_OVERFLOW if they do. From-SVN: r102800
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gcc/testsuite/gcc.c-torture/execute/vrp-5.c
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gcc/testsuite/gcc.c-torture/execute/vrp-6.c
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gcc/testsuite/gcc.dg/tree-ssa/vrp21.c
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