scc

commit ba6fc8e2c447455483d2c41241c4d03d85bbb5fb
parent 06dcec5c1db69e60cbc8f3670f58a7b6f65691ea
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Mon,  6 Mar 2017 15:51:13 +0100

[cc1] Add TODO in identity()

It is desirable to trasform power n modulo operations to
and operations. It cannot be done at this moment because
we need a way to detect if a constant is a power of 2.

Diffstat:
M
cc1/fold.c
 | 
1
+

1 file changed, 1 insertion(+), 0 deletions(-)
diff --git a/cc1/fold.c b/cc1/fold.c
@@ -590,6 +590,7 @@ identity(Node *np)
 		return NULL;
 	case OMOD:
 		/* i % 1  => i,1 */
+		/* TODO: i % 2^n => i & n-1 */
 		if (isoner)
 			goto change_to_comma;
 	default: