remove assigment splitter, it now caused code bloat instead of more efficient code

compiler/src/prog8/compiler/astprocessing/BeforeAsmAstChanger.kt

@@ -39,6 +39,7 @@ internal class BeforeAsmAstChanger(val program: Program, private val options: Co
         return noModifications
     }
 
+/* TODO remove permanently:
     override fun after(assignment: Assignment, parent: Node): Iterable<IAstModification> {
         // Try to replace A = B <operator> Something  by A= B, A = A <operator> Something
         // this triggers the more efficent augmented assignment code generation more often.
@@ -104,6 +105,7 @@ internal class BeforeAsmAstChanger(val program: Program, private val options: Co
         }
         return noModifications
     }
+*/
 
     override fun after(scope: AnonymousScope, parent: Node): Iterable<IAstModification> {
         if(scope.statements.any { it is VarDecl || it is IStatementContainer })

docs/source/todo.rst

@@ -1,8 +1,10 @@
 TODO
 ====
 
-- why does cx16.r1L = lsb(xx) & 3  generate 5 asm instructions? (noopt)
-- optimize asm:  sta VAR / <something with A> / sta VAR
+- monogfx/gfx2 flood fill is broken after removing the after(assignment: Assignment) from BeforeAsmAstChanger that splits assignments
+  also other things broken? rectangle? not sure
+
+- remove after(assignment from BeforeAsmAstChanger permanently once issues above fixed
 - gfx2/monogfx: use vera auto in/decrement in the flood fill routine (getpixels)
 - gfx2: use vera fx fill for horizontal_line of sufficient length?
 

examples/test.p8

@@ -1,44 +1,10 @@
-%import gfx2
-%import textio
-%import math
-
 %option no_sysinit
 %zeropage basicsafe
 
-
 main {
 
     sub start() {
-        ubyte[] shifts = [0,2,4,6]
-        ubyte value = 100
-        ubyte index = 2
-        value >>= shifts[index]
-        txt.print_ub(value)
-        txt.nl()
-        value = 100
-        index = 1
-        value >>= shifts[index]
-        txt.print_ub(value)
-        txt.nl()
-        value = 100
-        index = 0
-        value >>= shifts[index]
-        txt.print_ub(value)
-        txt.nl()
-
-        gfx2.screen_mode(2)
-        demofill()
-        repeat {
-        }
-    }
-
-    sub demofill() {
-        gfx2.circle(160, 120, 110, 1)
-        gfx2.rect(180, 5, 25, 190, 1)
-        gfx2.line(100, 150, 240, 10, 1)
-        gfx2.line(101, 150, 241, 10, 1)
-        gfx2.fill(100,100,2)
-        gfx2.fill(182,140,3)
-        gfx2.fill(182,40,1)
+        uword xx
+        cx16.r1L = lsb(xx) & 3
     }
 }