6502/millfork
1
0
Fork 0
mirror of https://github.com/KarolS/millfork.git synced 2025-01-19 19:30:08 +00:00
Code Issues Projects Releases Wiki Activity

Optimize for loops

Browse Source
This commit is contained in:
Karol Stasiak 2018-12-27 20:47:18 +01:00
parent 985663083a
commit 46bf726818
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/main/scala/millfork/compiler/AbstractStatementCompiler.scala
View File

@ -194,6 +194,12 @@ abstract class AbstractStatementCompiler[T <: AbstractCode] {
DoWhileStatement(Nil, decrement :: f.body, FunctionCallExpression("!=", List(vex, f.start)), names).pos(p)
))
case (ForDirection.Until, Some(NumericConstant(s, _)), Some(NumericConstant(e, _))) if s >= 0 && e > 0 && s < e =>
compile(ctx, List(
Assignment(vex, f.start).pos(p),
DoWhileStatement(f.body, increment::Nil, FunctionCallExpression("!=", List(vex, f.end)).pos(p), names).pos(p)
))
case (ForDirection.DownTo, Some(NumericConstant(s, ssize)), Some(NumericConstant(e, esize))) if s == e =>
val end = ctx.nextLabel("of")
val (main, extra) = compile(ctx.addLabels(names, Label(end), Label(end)), Assignment(vex, LiteralExpression(s, ssize)).pos(p) :: f.body)