Identified constant variable (byte*) main::SCREEN
Culled Empty Block (label) main::@4
Culled Empty Block (label) main::@5
Culled Empty Block (label) main::@6
Culled Empty Block (label) main::@8

CONTROL FLOW GRAPH SSA
@begin: scope:[]  from
  to:@1

(void()) main()
main: scope:[main]  from @1
  to:main::@1
main::@1: scope:[main]  from main main::@2
  if(true) goto main::@2
  to:main::@3
main::@2: scope:[main]  from main::@1
  *((const byte*) main::SCREEN) ← ++ *((const byte*) main::SCREEN)
  to:main::@1
main::@3: scope:[main]  from main::@1
  (byte) main::line#0 ← (byte) 0
  to:main::@7
main::@7: scope:[main]  from main::@3 main::@7
  (byte) main::line#2 ← phi( main::@3/(byte) main::line#0 main::@7/(byte) main::line#1 )
  *((const byte*) main::SCREEN + (byte) main::line#2) ← (byte) main::line#2
  (byte) main::line#1 ← (byte) main::line#2 + rangenext(0,$18)
  (bool~) main::$1 ← (byte) main::line#1 != rangelast(0,$18)
  if((bool~) main::$1) goto main::@7
  to:main::@return
main::@return: scope:[main]  from main::@7
  return 
  to:@return
@1: scope:[]  from @begin
  call main 
  to:@2
@2: scope:[]  from @1
  to:@end
@end: scope:[]  from @2

SYMBOL TABLE SSA
(label) @1
(label) @2
(label) @begin
(label) @end
(void()) main()
(bool~) main::$1
(label) main::@1
(label) main::@2
(label) main::@3
(label) main::@7
(label) main::@return
(const byte*) main::SCREEN = (byte*)(number) $400
(byte) main::line
(byte) main::line#0
(byte) main::line#1
(byte) main::line#2

Simplifying constant pointer cast (byte*) 1024
Successful SSA optimization PassNCastSimplification
Simple Condition (bool~) main::$1 [7] if((byte) main::line#1!=rangelast(0,$18)) goto main::@7
Successful SSA optimization Pass2ConditionalJumpSimplification
Constant (const byte) main::line#0 = 0
Successful SSA optimization Pass2ConstantIdentification
if() condition always true - replacing block destination [0] if(true) goto main::@2
Successful SSA optimization Pass2ConstantIfs
Resolved ranged next value [5] main::line#1 ← ++ main::line#2 to ++
Resolved ranged comparison value [7] if(main::line#1!=rangelast(0,$18)) goto main::@7 to (number) $19
Eliminating variable (byte) main::line#2 from unused block main::@7
Eliminating variable (byte) main::line#1 from unused block main::@7
Removing PHI-reference to removed block (main::@3) in block main::@7
Removing unused block main::@3
Removing unused block main::@7
Removing unused block main::@return
Successful SSA optimization Pass2EliminateUnusedBlocks
Eliminating unused constant (const byte) main::line#0
Successful SSA optimization PassNEliminateUnusedVars
Adding NOP phi() at start of @begin
Adding NOP phi() at start of @1
Adding NOP phi() at start of @2
Adding NOP phi() at start of @end
Adding NOP phi() at start of main
Adding NOP phi() at start of main::@1
CALL GRAPH
Calls in [] to main:2 

Created 0 initial phi equivalence classes
Coalesced down to 0 phi equivalence classes
Culled Empty Block (label) @2
Culled Empty Block (label) main::@1
Renumbering block main::@2 to main::@1
Adding NOP phi() at start of @begin
Adding NOP phi() at start of @1
Adding NOP phi() at start of @end
Adding NOP phi() at start of main

FINAL CONTROL FLOW GRAPH
@begin: scope:[]  from
  [0] phi()
  to:@1
@1: scope:[]  from @begin
  [1] phi()
  [2] call main 
  to:@end
@end: scope:[]  from @1
  [3] phi()

(void()) main()
main: scope:[main]  from @1
  [4] phi()
  to:main::@1
main::@1: scope:[main]  from main main::@1
  [5] *((const byte*) main::SCREEN) ← ++ *((const byte*) main::SCREEN)
  to:main::@1


VARIABLE REGISTER WEIGHTS
(void()) main()
(byte) main::line

Initial phi equivalence classes
Complete equivalence classes

INITIAL ASM
Target platform is c64basic / MOS6502X
  // File Comments
// Problem with eliminating unused blocks/vars after the infinite loop (symbol line#2 not removed from symbol table)
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(__bbegin)
.pc = $80d "Program"
  // Global Constants & labels
  // @begin
__bbegin:
  // [1] phi from @begin to @1 [phi:@begin->@1]
__b1_from___bbegin:
  jmp __b1
  // @1
__b1:
  // [2] call main 
  // [4] phi from @1 to main [phi:@1->main]
main_from___b1:
  jsr main
  // [3] phi from @1 to @end [phi:@1->@end]
__bend_from___b1:
  jmp __bend
  // @end
__bend:
  // main
main: {
    .label SCREEN = $400
    jmp __b1
    // main::@1
  __b1:
    // [5] *((const byte*) main::SCREEN) ← ++ *((const byte*) main::SCREEN) -- _deref_pbuc1=_inc__deref_pbuc1 
    inc SCREEN
    jmp __b1
}
  // File Data

REGISTER UPLIFT POTENTIAL REGISTERS

REGISTER UPLIFT SCOPES
Uplift Scope [main] 
Uplift Scope [] 

Uplifting [main] best 132 combination 
Uplifting [] best 132 combination 

ASSEMBLER BEFORE OPTIMIZATION
  // File Comments
// Problem with eliminating unused blocks/vars after the infinite loop (symbol line#2 not removed from symbol table)
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(__bbegin)
.pc = $80d "Program"
  // Global Constants & labels
  // @begin
__bbegin:
  // [1] phi from @begin to @1 [phi:@begin->@1]
__b1_from___bbegin:
  jmp __b1
  // @1
__b1:
  // [2] call main 
  // [4] phi from @1 to main [phi:@1->main]
main_from___b1:
  jsr main
  // [3] phi from @1 to @end [phi:@1->@end]
__bend_from___b1:
  jmp __bend
  // @end
__bend:
  // main
main: {
    .label SCREEN = $400
    jmp __b1
    // main::@1
  __b1:
    // [5] *((const byte*) main::SCREEN) ← ++ *((const byte*) main::SCREEN) -- _deref_pbuc1=_inc__deref_pbuc1 
    inc SCREEN
    jmp __b1
}
  // File Data

ASSEMBLER OPTIMIZATIONS
Removing instruction jmp __b1
Removing instruction jmp __bend
Removing instruction jmp __b1
Succesful ASM optimization Pass5NextJumpElimination
Replacing label __bbegin with __b1
Removing instruction __bbegin:
Removing instruction __b1_from___bbegin:
Removing instruction main_from___b1:
Removing instruction __bend_from___b1:
Succesful ASM optimization Pass5RedundantLabelElimination
Removing instruction __bend:
Succesful ASM optimization Pass5UnusedLabelElimination
Updating BasicUpstart to call main directly
Removing instruction jsr main
Succesful ASM optimization Pass5SkipBegin
Removing instruction __b1:
Succesful ASM optimization Pass5UnusedLabelElimination

FINAL SYMBOL TABLE
(label) @1
(label) @begin
(label) @end
(void()) main()
(label) main::@1
(const byte*) main::SCREEN = (byte*) 1024
(byte) main::line



FINAL ASSEMBLER
Score: 90

  // File Comments
// Problem with eliminating unused blocks/vars after the infinite loop (symbol line#2 not removed from symbol table)
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
  // Global Constants & labels
  // @begin
  // [1] phi from @begin to @1 [phi:@begin->@1]
  // @1
  // [2] call main 
  // [4] phi from @1 to main [phi:@1->main]
  // [3] phi from @1 to @end [phi:@1->@end]
  // @end
  // main
main: {
    .label SCREEN = $400
    // main::@1
  __b1:
    // (*SCREEN)++;
    // [5] *((const byte*) main::SCREEN) ← ++ *((const byte*) main::SCREEN) -- _deref_pbuc1=_inc__deref_pbuc1 
    inc SCREEN
    jmp __b1
}
  // File Data

