tail inc/dec optimizations were too agressive; fix typo in comments

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@386 4a8a32a2-be11-0410-ad9d-d568d2c75423

diff --git a/src/ds390/gen.c b/src/ds390/gen.c
index 85ec43c0487f10532a6cf89f3e43156435feb186..73a4f0bdc5a77d037ac90eddae9cd25b4b9777fd 100644 (file)
--- a/src/ds390/gen.c
+++ b/src/ds390/gen.c
@@ -741,13 +741,13 @@ dealloc:
     }
 }
 
-/*-----------------------------------------------------------------*/
-/* aopGet - for fetching value of the aop                          */
-/* 
- * Set canClobberACC if you are aure it is OK to clobber the value 
- * in the accumulator. Set it FALSE otherwise; FALSE is always safe,
- * just less efficient.
-/*-----------------------------------------------------------------*/
+/*------------------------------------------------------------------*/
+/* aopGet - for fetching value of the aop                           */
+/*                                                                 */
+/* Set canClobberACC if you are aure it is OK to clobber the value  */
+/* in the accumulator. Set it FALSE otherwise; FALSE is always safe,*/
+/* just less efficient.                                                    */
+/*------------------------------------------------------------------*/
 
 static char *aopGet (asmop *aop, 
                     int offset, 
@@ -2594,14 +2594,14 @@ static bool genPlusIncr (iCode *ic)
         int labelRange;
 
        /* If the next instruction is a goto and the goto target
-        * is < 10 instructions previous to this, we can generate
+        * is <= 5 instructions previous to this, we can generate
         * jumps straight to that target.
         */
         if (ic->next && ic->next->op == GOTO
             && (labelRange = findLabelBackwards(ic, IC_LABEL(ic->next)->key)) != 0
-            && labelRange <= 10 )
+            && labelRange <= 5 )
         {
-           emitcode(";", "tail increment optimized");
+           emitcode(";", "tail increment optimized (range %d)", labelRange);
            tlbl = IC_LABEL(ic->next);
            emitTlbl = 0;
         }
@@ -2929,14 +2929,14 @@ static bool genMinusDec (iCode *ic)
             int labelRange;
 
            /* If the next instruction is a goto and the goto target
-            * is <= 10 instructions previous to this, we can generate
+         * is <= 5 instructions previous to this, we can generate
             * jumps straight to that target.
             */
             if (ic->next && ic->next->op == GOTO
                 && (labelRange = findLabelBackwards(ic, IC_LABEL(ic->next)->key)) != 0
-                && labelRange <= 10 )
+                && labelRange <= 5 )
             {        
-               emitcode(";", "tail decrement optimized");
+               emitcode(";", "tail decrement optimized (range %d)", labelRange);
                tlbl = IC_LABEL(ic->next);
                emitTlbl = 0;
             }