1a9dddada3
PR tree-optimization/20216 * tree-chrec.c (tree_fold_factorial): Delete. (tree_fold_binomial): Change argument list to take a return type and change the type of K to unsigned int. Rewrite to avoid explicit evaluation of factorials, and (recursively) calling fold to perform compile-time arithmetic. Return NULL on (internal) overflow. (chrec_evaluate): Change type of K to an unsigned int. Avoid calling tree_fold_binomial unnecessarily. Return chrec_dont_know if any intermediate calculation overflows. (chrec_apply): Update call to chrec_evaluate. From-SVN: r95722 |
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