f548a3173e
* fold-const.c (fold_unary_loc): Don't optimize POINTER_PLUS_EXPR casted to TYPE_RESTRICT pointer by casting the inner pointer if it isn't TYPE_RESTRICT. * tree-ssa-forwprop.c (forward_propagate_addr_expr_1): Don't through casts from non-TYPE_RESTRICT pointer to TYPE_RESTRICT pointer. * gcc.dg/tree-ssa/restrict-4.c: New test. From-SVN: r179500
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