Remove all unused bytes in one pass, instead of one by one.

dmsc · dmsc · commit 0689289449b5 · 2025-10-07T21:27:25.000-03:00
This fixes long compilation times with a lot of dead code, for example
when including bit data files that are not used.
diff --git a/src/compiler/peephole.cc b/src/compiler/peephole.cc
@@ -1480,7 +1480,11 @@ class peephole
                 // Remove dead code after a RET or END
                 if((mtok(0, "TOK_RET") || mtok(0, "TOK_END")) && !mlabel(1))
                 {
-                    del(1);
+                    int last = 1;
+                    while(current + last < code.size() && !mlabel(last))
+                        last++;
+                    while(--last >= 1)
+                        del(last);
                     continue;
                 }
                 // Convert PRINT CHR$(X) to PUT X

Original file line number	Diff line number	Diff line change
`@@ -1480,7 +1480,11 @@ class peephole`
`1480`	`1480`	`// Remove dead code after a RET or END`
`1481`	`1481`	`if((mtok(0, "TOK_RET") \|\| mtok(0, "TOK_END")) && !mlabel(1))`
`1482`	`1482`	`{`
`1483`		`- del(1);`
	`1483`	`+ int last = 1;`
	`1484`	`+ while(current + last < code.size() && !mlabel(last))`
	`1485`	`+ last++;`
	`1486`	`+ while(--last >= 1)`
	`1487`	`+ del(last);`
`1484`	`1488`	`continue;`
`1485`	`1489`	`}`
`1486`	`1490`	`// Convert PRINT CHR$(X) to PUT X`