Last active
January 29, 2017 14:31
-
-
Save deque-blog/b749042dd5fb11f3b6ad88eb5539f4ab to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
expression opt_add_alg(expression_r<expression> const& e) | |
{ | |
if (auto* op = get_as_add(e)) | |
return optimize_op(*op, 0, std::plus<int>()); | |
return e; | |
} | |
expression opt_mul_alg(expression_r<expression> const& e) | |
{ | |
if (auto* op = get_as_mul(e)) | |
{ | |
if (has_zero(op->rands())) | |
return cst(0); | |
return optimize_op(*op, 1, std::multiplies<int>()); | |
} | |
return e; | |
} | |
expression optimize_alg(expression_r<expression> const& e) | |
{ | |
return opt_mul_alg(opt_add_alg(e).get()); | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment