Resolved forward reference fn1 to void fn1()
Resolved forward reference fn2 to void fn2()

CONTROL FLOW GRAPH SSA

void main()
main: scope:[main]  from __start
  main::i#0 = 0
  to:main::@1
main::@1: scope:[main]  from main main::@2
  main::i#2 = phi( main/main::i#0, main::@2/main::i#1 )
  main::$0 = main::i#2 & 1
  main::$1 = main::$0 == 0
  if(main::$1) goto main::@2
  to:main::@3
main::@3: scope:[main]  from main::@1
  main::i#4 = phi( main::@1/main::i#2 )
  to:main::@2
main::@2: scope:[main]  from main::@1 main::@3
  main::i#3 = phi( main::@1/main::i#2, main::@3/main::i#4 )
  main::i#1 = main::i#3 + rangenext(0,$64)
  main::$2 = main::i#1 != rangelast(0,$64)
  if(main::$2) goto main::@1
  to:main::@return
main::@return: scope:[main]  from main::@2
  return 
  to:@return

void fn1()
fn1: scope:[fn1]  from
  *fn1::BORDER_COLOR = ++ *fn1::BORDER_COLOR
  to:fn1::@return
fn1::@return: scope:[fn1]  from fn1
  return 
  to:@return

void fn2()
fn2: scope:[fn2]  from
  *fn2::BG_COLOR = ++ *fn2::BG_COLOR
  to:fn2::@return
fn2::@return: scope:[fn2]  from fn2
  return 
  to:@return

void __start()
__start: scope:[__start]  from
  call main
  to:__start::@1
__start::@1: scope:[__start]  from __start
  to:__start::@return
__start::@return: scope:[__start]  from __start::@1
  return 
  to:@return

SYMBOL TABLE SSA
void __start()
void fn1()
__constant char * const fn1::BORDER_COLOR = (char *)$d020
void fn2()
__constant char * const fn2::BG_COLOR = (char *)$d021
void main()
number main::$0
bool main::$1
bool main::$2
char main::i
char main::i#0
char main::i#1
char main::i#2
char main::i#3
char main::i#4

Adding number conversion cast (unumber) 1 in main::$0 = main::i#2 & 1
Adding number conversion cast (unumber) main::$0 in main::$0 = main::i#2 & (unumber)1
Adding number conversion cast (unumber) 0 in main::$1 = main::$0 == 0
Successful SSA optimization PassNAddNumberTypeConversions
Simplifying constant pointer cast (char *) 53280
Simplifying constant pointer cast (char *) 53281
Simplifying constant integer cast 1
Simplifying constant integer cast 0
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (char) 1
Finalized unsigned number type (char) 0
Successful SSA optimization PassNFinalizeNumberTypeConversions
Inferred type updated to char in main::$0 = main::i#2 & 1
Alias main::i#2 = main::i#4 
Successful SSA optimization Pass2AliasElimination
Alias main::i#2 = main::i#3 
Successful SSA optimization Pass2AliasElimination
Simple Condition main::$1 [4] if(main::$0==0) goto main::@2
Simple Condition main::$2 [7] if(main::i#1!=rangelast(0,$64)) goto main::@1
Successful SSA optimization Pass2ConditionalJumpSimplification
Constant main::i#0 = 0
Successful SSA optimization Pass2ConstantIdentification
Resolved ranged next value [5] main::i#1 = ++ main::i#2 to ++
Resolved ranged comparison value [7] if(main::i#1!=rangelast(0,$64)) goto main::@1 to $65
Removing unused procedure fn1
Removing unused procedure block fn1
Removing unused procedure block fn1::@return
Removing unused procedure fn2
Removing unused procedure block fn2
Removing unused procedure block fn2::@return
Successful SSA optimization Pass2EliminateUnusedBlocks
Removing unused procedure __start
Removing unused procedure block __start
Removing unused procedure block __start::@1
Removing unused procedure block __start::@return
Successful SSA optimization PassNEliminateEmptyStart
Adding number conversion cast (unumber) $65 in [4] if(main::i#1!=$65) goto main::@1
Successful SSA optimization PassNAddNumberTypeConversions
Simplifying constant integer cast $65
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (char) $65
Successful SSA optimization PassNFinalizeNumberTypeConversions
Inlining constant with var siblings main::i#0
Constant inlined main::i#0 = 0
Successful SSA optimization Pass2ConstantInlining
Added new block during phi lifting main::@4(between main::@2 and main::@1)
Adding NOP phi() at start of main
Adding NOP phi() at start of main::@3
CALL GRAPH

Created 1 initial phi equivalence classes
Coalesced [8] main::i#5 = main::i#1
Coalesced down to 1 phi equivalence classes
Culled Empty Block label main::@4
Adding NOP phi() at start of main
Adding NOP phi() at start of main::@3

FINAL CONTROL FLOW GRAPH

void main()
main: scope:[main]  from
  [0] phi()
  to:main::@1
main::@1: scope:[main]  from main main::@2
  [1] main::i#2 = phi( main/0, main::@2/main::i#1 )
  [2] main::$0 = main::i#2 & 1
  [3] if(main::$0==0) goto main::@2
  to:main::@3
main::@3: scope:[main]  from main::@1
  [4] phi()
  to:main::@2
main::@2: scope:[main]  from main::@1 main::@3
  [5] main::i#1 = ++ main::i#2
  [6] if(main::i#1!=$65) goto main::@1
  to:main::@return
main::@return: scope:[main]  from main::@2
  [7] return 
  to:@return


VARIABLE REGISTER WEIGHTS
void main()
char main::$0 // 22.0
char main::i
char main::i#1 // 16.5
char main::i#2 // 8.25

Initial phi equivalence classes
[ main::i#2 main::i#1 ]
Added variable main::$0 to live range equivalence class [ main::$0 ]
Complete equivalence classes
[ main::i#2 main::i#1 ]
[ main::$0 ]
Allocated zp[1]:2 [ main::i#2 main::i#1 ]
Allocated zp[1]:3 [ main::$0 ]
REGISTER UPLIFT POTENTIAL REGISTERS
Potential registers zp[1]:2 [ main::i#2 main::i#1 ] : zp[1]:2 , reg byte a , reg byte x , reg byte y , 
Potential registers zp[1]:3 [ main::$0 ] : zp[1]:3 , reg byte a , reg byte x , reg byte y , 

REGISTER UPLIFT SCOPES
Uplift Scope [main] 24.75: zp[1]:2 [ main::i#2 main::i#1 ] 22: zp[1]:3 [ main::$0 ] 
Uplift Scope [] 

Uplifting [main] best 326 combination reg byte x [ main::i#2 main::i#1 ] reg byte a [ main::$0 ] 
Uplifting [] best 326 combination 

ASSEMBLER BEFORE OPTIMIZATION
  // File Comments
// Tests creating and assigning pointers to non-args no-return functions
  // Upstart
  // Commodore 64 PRG executable file
.file [name="function-pointer-noarg-2.prg", type="prg", segments="Program"]
.segmentdef Program [segments="Basic, Code, Data"]
.segmentdef Basic [start=$0801]
.segmentdef Code [start=$80d]
.segmentdef Data [startAfter="Code"]
.segment Basic
:BasicUpstart(main)
  // Global Constants & labels
.segment Code
  // main
main: {
    // [1] phi from main to main::@1 [phi:main->main::@1]
  __b1_from_main:
    // [1] phi main::i#2 = 0 [phi:main->main::@1#0] -- vbuxx=vbuc1 
    ldx #0
    jmp __b1
    // [1] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
  __b1_from___b2:
    // [1] phi main::i#2 = main::i#1 [phi:main::@2->main::@1#0] -- register_copy 
    jmp __b1
    // main::@1
  __b1:
    // [2] main::$0 = main::i#2 & 1 -- vbuaa=vbuxx_band_vbuc1 
    txa
    and #1
    // [3] if(main::$0==0) goto main::@2 -- vbuaa_eq_0_then_la1 
    cmp #0
    beq __b2
    // [4] phi from main::@1 to main::@3 [phi:main::@1->main::@3]
  __b3_from___b1:
    jmp __b3
    // main::@3
  __b3:
    jmp __b2
    // main::@2
  __b2:
    // [5] main::i#1 = ++ main::i#2 -- vbuxx=_inc_vbuxx 
    inx
    // [6] if(main::i#1!=$65) goto main::@1 -- vbuxx_neq_vbuc1_then_la1 
    cpx #$65
    bne __b1_from___b2
    jmp __breturn
    // main::@return
  __breturn:
    // [7] return 
    rts
}
  // File Data

ASSEMBLER OPTIMIZATIONS
Removing instruction jmp __b1
Removing instruction jmp __b3
Removing instruction jmp __b2
Removing instruction jmp __breturn
Succesful ASM optimization Pass5NextJumpElimination
Replacing label __b1_from___b2 with __b1
Removing instruction __b1_from___b2:
Removing instruction __b3_from___b1:
Removing instruction __b3:
Succesful ASM optimization Pass5RedundantLabelElimination
Removing instruction __b1_from_main:
Removing instruction __breturn:
Succesful ASM optimization Pass5UnusedLabelElimination
Removing instruction jmp __b1
Removing instruction beq __b2
Succesful ASM optimization Pass5NextJumpElimination
Removing instruction __b2:
Succesful ASM optimization Pass5UnusedLabelElimination

FINAL SYMBOL TABLE
void main()
char main::$0 // reg byte a 22.0
char main::i
char main::i#1 // reg byte x 16.5
char main::i#2 // reg byte x 8.25

reg byte x [ main::i#2 main::i#1 ]
reg byte a [ main::$0 ]


FINAL ASSEMBLER
Score: 151

  // File Comments
// Tests creating and assigning pointers to non-args no-return functions
  // Upstart
  // Commodore 64 PRG executable file
.file [name="function-pointer-noarg-2.prg", type="prg", segments="Program"]
.segmentdef Program [segments="Basic, Code, Data"]
.segmentdef Basic [start=$0801]
.segmentdef Code [start=$80d]
.segmentdef Data [startAfter="Code"]
.segment Basic
:BasicUpstart(main)
  // Global Constants & labels
.segment Code
  // main
main: {
    // [1] phi from main to main::@1 [phi:main->main::@1]
    // [1] phi main::i#2 = 0 [phi:main->main::@1#0] -- vbuxx=vbuc1 
    ldx #0
    // [1] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
    // [1] phi main::i#2 = main::i#1 [phi:main::@2->main::@1#0] -- register_copy 
    // main::@1
  __b1:
    // i&1
    // [2] main::$0 = main::i#2 & 1 -- vbuaa=vbuxx_band_vbuc1 
    txa
    and #1
    // if((i&1)==0)
    // [3] if(main::$0==0) goto main::@2 -- vbuaa_eq_0_then_la1 
    cmp #0
    // [4] phi from main::@1 to main::@3 [phi:main::@1->main::@3]
    // main::@3
    // main::@2
    // for ( byte i: 0..100)
    // [5] main::i#1 = ++ main::i#2 -- vbuxx=_inc_vbuxx 
    inx
    // [6] if(main::i#1!=$65) goto main::@1 -- vbuxx_neq_vbuc1_then_la1 
    cpx #$65
    bne __b1
    // main::@return
    // }
    // [7] return 
    rts
}
  // File Data

