Added SLI reduce

1991-02-19 16:45:57 +00:00
parent e0be1dfe3a
commit 79cb35ec4f
15 changed files with 19 additions and 24 deletions
--- a/util/ego/sr/sr.h
+++ b/util/ego/sr/sr.h
@@ -9,11 +9,6 @@
 *
 */

-/*#define SLI_REDUCE		/* if defined, shift-lefts are also reduced */
-				/* not defined for the moment; should use
-				 * machine specific information (as should
-				 * reduction of array instructions	*/
-
 typedef struct iv	*iv_p;
 typedef struct code_info *code_p;

@@ -70,6 +65,9 @@ extern int ovfl_harmful;  /* Does overflow during multiplication
 extern int arrbound_harmful;  /* Is it harmful to take the address of
 				* a non-existing array element ?
 				*/
+extern int sli_threshold; /* Try to optimize SLI if shift-count larger than
+			    * this
+			    */
 extern int Ssr;  /* #optimizations found */

 /* core allocation macros */