under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
-
+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-
+
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
+
In other words, you are welcome to use, share and improve this program.
You are forbidden to forbid anyone else to use, share and improve
- what you give them. Help stamp out software-hoarding!
+ what you give them. Help stamp out software-hoarding!
-------------------------------------------------------------------------*/
#include "SDCCBBlock.h"
#include "SDCCcse.h"
#ifndef SDCCLOOP_H
#define SDCCLOOP_H 1
-typedef struct region {
+typedef struct region
+ {
- unsigned int merged:1;
- eBBlock *entry ; /* entry Block */
- int containsLoops; /* contains other loops */
- set *regBlocks ; /* set of all blocks */
- set *exits ; /* set of exits */
-} region ;
+ unsigned int merged:1;
+ unsigned int visited:1;
+ eBBlock *entry; /* entry Block */
+ int containsLoops; /* contains other loops */
+ set *regBlocks; /* set of all blocks */
+ set *exits; /* set of exits */
+ }
+region;
-typedef struct induction {
-
- operand *sym ;
+typedef struct induction
+ {
+
+ operand *sym;
operand *asym;
- unsigned int op ;
- long cval ;
+ unsigned int op;
+ long cval;
iCode *ic;
-} induction ;
+ }
+induction;
-DEFSETFUNC(backEdges);
-DEFSETFUNC(pregion);
-DEFSETFUNC(pinduction);
+DEFSETFUNC (backEdges);
+DEFSETFUNC (pregion);
+DEFSETFUNC (pinduction);
int loopOptimizations (hTab *, eBBlock **, int);
-int addressTaken (set *,operand *);
-hTab *createLoopRegions (eBBlock **, int );
+int addressTaken (set *, operand *);
+hTab *createLoopRegions (eBBlock **, int);
iCode *findDefInRegion (set *, operand *, eBBlock **);
int hasIncomingDefs (region *, operand *);
-int findLoopEndSeq(region *);
-
+int findLoopEndSeq (region *);
+void addLoopBlocks (eBBlock ** ebbs, int count);
#endif