Culled Empty Block (label) main::@6
Culled Empty Block (label) main::@7
Culled Empty Block (label) main::@5
Culled Empty Block (label) main::@9
Culled Empty Block (label) main::@10

CONTROL FLOW GRAPH SSA
@begin: scope:[]  from
  to:@1
main: scope:[main]  from @1
  (byte) main::i#0 ← (number) $64
  (byte) main::s#0 ← (number) 0
  to:main::@1
main::@1: scope:[main]  from main main::@4 main::@8
  (byte) main::s#6 ← phi( main/(byte) main::s#0 main::@4/(byte) main::s#1 main::@8/(byte) main::s#2 )
  (byte) main::i#2 ← phi( main/(byte) main::i#0 main::@4/(byte) main::i#4 main::@8/(byte) main::i#5 )
  (byte) main::i#1 ← -- (byte) main::i#2
  (bool~) main::$0 ← (byte) main::i#1 > (number) 0
  if((bool~) main::$0) goto main::@2
  to:main::@3
main::@2: scope:[main]  from main::@1
  (byte) main::s#7 ← phi( main::@1/(byte) main::s#6 )
  (byte) main::i#3 ← phi( main::@1/(byte) main::i#1 )
  (bool~) main::$1 ← (byte) main::i#3 > (number) $32
  if((bool~) main::$1) goto main::@4
  to:main::@8
main::@3: scope:[main]  from main::@1
  (byte) main::s#3 ← phi( main::@1/(byte) main::s#6 )
  (byte*) main::SCREEN#0 ← ((byte*)) (number) $400
  *((byte*) main::SCREEN#0) ← (byte) main::s#3
  to:main::@return
main::@4: scope:[main]  from main::@2
  (byte) main::i#4 ← phi( main::@2/(byte) main::i#3 )
  (byte) main::s#4 ← phi( main::@2/(byte) main::s#7 )
  (byte) main::s#1 ← ++ (byte) main::s#4
  to:main::@1
main::@8: scope:[main]  from main::@2
  (byte) main::i#5 ← phi( main::@2/(byte) main::i#3 )
  (byte) main::s#5 ← phi( main::@2/(byte) main::s#7 )
  (byte) main::s#2 ← -- (byte) main::s#5
  to:main::@1
main::@return: scope:[main]  from main::@3
  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::$0
(bool~) main::$1
(label) main::@1
(label) main::@2
(label) main::@3
(label) main::@4
(label) main::@8
(label) main::@return
(byte*) main::SCREEN
(byte*) main::SCREEN#0
(byte) main::i
(byte) main::i#0
(byte) main::i#1
(byte) main::i#2
(byte) main::i#3
(byte) main::i#4
(byte) main::i#5
(byte) main::s
(byte) main::s#0
(byte) main::s#1
(byte) main::s#2
(byte) main::s#3
(byte) main::s#4
(byte) main::s#5
(byte) main::s#6
(byte) main::s#7

Adding number conversion cast (unumber) $64 in (byte) main::i#0 ← (number) $64
Adding number conversion cast (unumber) 0 in (byte) main::s#0 ← (number) 0
Adding number conversion cast (unumber) 0 in (bool~) main::$0 ← (byte) main::i#1 > (number) 0
Adding number conversion cast (unumber) $32 in (bool~) main::$1 ← (byte) main::i#3 > (number) $32
Successful SSA optimization PassNAddNumberTypeConversions
Inlining cast (byte) main::i#0 ← (unumber)(number) $64
Inlining cast (byte) main::s#0 ← (unumber)(number) 0
Inlining cast (byte*) main::SCREEN#0 ← (byte*)(number) $400
Successful SSA optimization Pass2InlineCast
Simplifying constant integer cast $64
Simplifying constant integer cast 0
Simplifying constant integer cast 0
Simplifying constant integer cast $32
Simplifying constant pointer cast (byte*) 1024
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (byte) $64
Finalized unsigned number type (byte) 0
Finalized unsigned number type (byte) 0
Finalized unsigned number type (byte) $32
Successful SSA optimization PassNFinalizeNumberTypeConversions
Alias (byte) main::i#1 = (byte) main::i#3 (byte) main::i#4 (byte) main::i#5 
Alias (byte) main::s#3 = (byte) main::s#7 (byte) main::s#6 (byte) main::s#4 (byte) main::s#5 
Successful SSA optimization Pass2AliasElimination
Simple Condition (bool~) main::$0 [5] if((byte) main::i#1>(byte) 0) goto main::@2
Simple Condition (bool~) main::$1 [8] if((byte) main::i#1>(byte) $32) goto main::@4
Successful SSA optimization Pass2ConditionalJumpSimplification
Constant (const byte) main::i#0 = $64
Constant (const byte) main::s#0 = 0
Constant (const byte*) main::SCREEN#0 = (byte*) 1024
Successful SSA optimization Pass2ConstantIdentification
Rewriting conditional comparison [8] if((byte) main::i#1>(byte) $32) goto main::@4
Adding number conversion cast (unumber) $32+1 in if((byte) main::i#1>=(byte) $32+(number) 1) goto main::@4
Adding number conversion cast (unumber) 1 in if((byte) main::i#1>=(unumber)(byte) $32+(number) 1) goto main::@4
Successful SSA optimization PassNAddNumberTypeConversions
Simplifying constant integer cast (byte) $32+(unumber)(number) 1
Simplifying constant integer cast 1
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (byte) 1
Successful SSA optimization PassNFinalizeNumberTypeConversions
Inlining constant with var siblings (const byte) main::i#0
Inlining constant with var siblings (const byte) main::s#0
Constant inlined main::i#0 = (byte) $64
Constant inlined main::s#0 = (byte) 0
Successful SSA optimization Pass2ConstantInlining
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
CALL GRAPH
Calls in [] to main:2 

Created 2 initial phi equivalence classes
Coalesced [13] main::i#7 ← main::i#1
Coalesced [14] main::s#9 ← main::s#2
Coalesced (already) [16] main::i#6 ← main::i#1
Coalesced [17] main::s#8 ← main::s#1
Coalesced down to 2 phi equivalence classes
Culled Empty Block (label) @2
Renumbering block main::@8 to main::@5
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()
main: scope:[main]  from @1
  [4] phi()
  to:main::@1
main::@1: scope:[main]  from main main::@4 main::@5
  [5] (byte) main::s#3 ← phi( main/(byte) 0 main::@4/(byte) main::s#1 main::@5/(byte) main::s#2 )
  [5] (byte) main::i#2 ← phi( main/(byte) $64 main::@4/(byte) main::i#1 main::@5/(byte) main::i#1 )
  [6] (byte) main::i#1 ← -- (byte) main::i#2
  [7] if((byte) main::i#1>(byte) 0) goto main::@2
  to:main::@3
main::@3: scope:[main]  from main::@1
  [8] *((const byte*) main::SCREEN#0) ← (byte) main::s#3
  to:main::@return
main::@return: scope:[main]  from main::@3
  [9] return 
  to:@return
main::@2: scope:[main]  from main::@1
  [10] if((byte) main::i#1>=(byte) $32+(byte) 1) goto main::@4
  to:main::@5
main::@5: scope:[main]  from main::@2
  [11] (byte) main::s#2 ← -- (byte) main::s#3
  to:main::@1
main::@4: scope:[main]  from main::@2
  [12] (byte) main::s#1 ← ++ (byte) main::s#3
  to:main::@1


VARIABLE REGISTER WEIGHTS
(void()) main()
(byte*) main::SCREEN
(byte) main::i
(byte) main::i#1 11.0
(byte) main::i#2 33.0
(byte) main::s
(byte) main::s#1 22.0
(byte) main::s#2 22.0
(byte) main::s#3 11.5

Initial phi equivalence classes
[ main::i#2 main::i#1 ]
[ main::s#3 main::s#1 main::s#2 ]
Complete equivalence classes
[ main::i#2 main::i#1 ]
[ main::s#3 main::s#1 main::s#2 ]
Allocated zp ZP_BYTE:2 [ main::i#2 main::i#1 ]
Allocated zp ZP_BYTE:3 [ main::s#3 main::s#1 main::s#2 ]

INITIAL ASM
  // File Comments
  // Basic 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
    .label i = 2
    .label s = 3
    // [5] phi from main to main::@1 [phi:main->main::@1]
  b1_from_main:
    // [5] phi (byte) main::s#3 = (byte) 0 [phi:main->main::@1#0] -- vbuz1=vbuc1 
    lda #0
    sta s
    // [5] phi (byte) main::i#2 = (byte) $64 [phi:main->main::@1#1] -- vbuz1=vbuc1 
    lda #$64
    sta i
    jmp b1
    // main::@1
  b1:
    // [6] (byte) main::i#1 ← -- (byte) main::i#2 -- vbuz1=_dec_vbuz1 
    dec i
    // [7] if((byte) main::i#1>(byte) 0) goto main::@2 -- vbuz1_gt_0_then_la1 
    lda i
    bne b2
    jmp b3
    // main::@3
  b3:
    // [8] *((const byte*) main::SCREEN#0) ← (byte) main::s#3 -- _deref_pbuc1=vbuz1 
    lda s
    sta SCREEN
    jmp breturn
    // main::@return
  breturn:
    // [9] return 
    rts
    // main::@2
  b2:
    // [10] if((byte) main::i#1>=(byte) $32+(byte) 1) goto main::@4 -- vbuz1_ge_vbuc1_then_la1 
    lda i
    cmp #$32+1
    bcs b4
    jmp b5
    // main::@5
  b5:
    // [11] (byte) main::s#2 ← -- (byte) main::s#3 -- vbuz1=_dec_vbuz1 
    dec s
    // [5] phi from main::@4 main::@5 to main::@1 [phi:main::@4/main::@5->main::@1]
  b1_from_b4:
  b1_from_b5:
    // [5] phi (byte) main::s#3 = (byte) main::s#1 [phi:main::@4/main::@5->main::@1#0] -- register_copy 
    // [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@4/main::@5->main::@1#1] -- register_copy 
    jmp b1
    // main::@4
  b4:
    // [12] (byte) main::s#1 ← ++ (byte) main::s#3 -- vbuz1=_inc_vbuz1 
    inc s
    jmp b1_from_b4
}
  // File Data

REGISTER UPLIFT POTENTIAL REGISTERS
Potential registers zp ZP_BYTE:2 [ main::i#2 main::i#1 ] : zp ZP_BYTE:2 , reg byte a , reg byte x , reg byte y , 
Potential registers zp ZP_BYTE:3 [ main::s#3 main::s#1 main::s#2 ] : zp ZP_BYTE:3 , reg byte a , reg byte x , reg byte y , 

REGISTER UPLIFT SCOPES
Uplift Scope [main] 55.5: zp ZP_BYTE:3 [ main::s#3 main::s#1 main::s#2 ] 44: zp ZP_BYTE:2 [ main::i#2 main::i#1 ] 
Uplift Scope [] 

Uplifting [main] best 365 combination reg byte y [ main::s#3 main::s#1 main::s#2 ] reg byte x [ main::i#2 main::i#1 ] 
Uplifting [] best 365 combination 

ASSEMBLER BEFORE OPTIMIZATION
  // File Comments
  // Basic 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
    // [5] phi from main to main::@1 [phi:main->main::@1]
  b1_from_main:
    // [5] phi (byte) main::s#3 = (byte) 0 [phi:main->main::@1#0] -- vbuyy=vbuc1 
    ldy #0
    // [5] phi (byte) main::i#2 = (byte) $64 [phi:main->main::@1#1] -- vbuxx=vbuc1 
    ldx #$64
    jmp b1
    // main::@1
  b1:
    // [6] (byte) main::i#1 ← -- (byte) main::i#2 -- vbuxx=_dec_vbuxx 
    dex
    // [7] if((byte) main::i#1>(byte) 0) goto main::@2 -- vbuxx_gt_0_then_la1 
    cpx #0
    bne b2
    jmp b3
    // main::@3
  b3:
    // [8] *((const byte*) main::SCREEN#0) ← (byte) main::s#3 -- _deref_pbuc1=vbuyy 
    sty SCREEN
    jmp breturn
    // main::@return
  breturn:
    // [9] return 
    rts
    // main::@2
  b2:
    // [10] if((byte) main::i#1>=(byte) $32+(byte) 1) goto main::@4 -- vbuxx_ge_vbuc1_then_la1 
    cpx #$32+1
    bcs b4
    jmp b5
    // main::@5
  b5:
    // [11] (byte) main::s#2 ← -- (byte) main::s#3 -- vbuyy=_dec_vbuyy 
    dey
    // [5] phi from main::@4 main::@5 to main::@1 [phi:main::@4/main::@5->main::@1]
  b1_from_b4:
  b1_from_b5:
    // [5] phi (byte) main::s#3 = (byte) main::s#1 [phi:main::@4/main::@5->main::@1#0] -- register_copy 
    // [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@4/main::@5->main::@1#1] -- register_copy 
    jmp b1
    // main::@4
  b4:
    // [12] (byte) main::s#1 ← ++ (byte) main::s#3 -- vbuyy=_inc_vbuyy 
    iny
    jmp b1_from_b4
}
  // File Data

ASSEMBLER OPTIMIZATIONS
Removing instruction jmp b1
Removing instruction jmp bend
Removing instruction jmp b1
Removing instruction jmp b3
Removing instruction jmp breturn
Removing instruction jmp b5
Succesful ASM optimization Pass5NextJumpElimination
Replacing label b1_from_b4 with b1_from_b5
Removing instruction b1_from_bbegin:
Removing instruction b1:
Removing instruction main_from_b1:
Removing instruction bend_from_b1:
Removing instruction b1_from_b4:
Succesful ASM optimization Pass5RedundantLabelElimination
Removing instruction bend:
Removing instruction b1_from_main:
Removing instruction b3:
Removing instruction breturn:
Removing instruction b5:
Succesful ASM optimization Pass5UnusedLabelElimination
Updating BasicUpstart to call main directly
Removing instruction jsr main
Succesful ASM optimization Pass5SkipBegin
Skipping double jump to b1 in jmp b1_from_b5
Succesful ASM optimization Pass5DoubleJumpElimination
Relabelling long label b1_from_b5 to b3
Succesful ASM optimization Pass5RelabelLongLabels
Removing instruction bbegin:
Removing instruction b3:
Succesful ASM optimization Pass5UnusedLabelElimination

FINAL SYMBOL TABLE
(label) @1
(label) @begin
(label) @end
(void()) main()
(label) main::@1
(label) main::@2
(label) main::@3
(label) main::@4
(label) main::@5
(label) main::@return
(byte*) main::SCREEN
(const byte*) main::SCREEN#0 SCREEN = (byte*) 1024
(byte) main::i
(byte) main::i#1 reg byte x 11.0
(byte) main::i#2 reg byte x 33.0
(byte) main::s
(byte) main::s#1 reg byte y 22.0
(byte) main::s#2 reg byte y 22.0
(byte) main::s#3 reg byte y 11.5

reg byte x [ main::i#2 main::i#1 ]
reg byte y [ main::s#3 main::s#1 main::s#2 ]


FINAL ASSEMBLER
Score: 260

  // File Comments
  // Basic 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
    // [5] phi from main to main::@1 [phi:main->main::@1]
    // [5] phi (byte) main::s#3 = (byte) 0 [phi:main->main::@1#0] -- vbuyy=vbuc1 
    ldy #0
    // [5] phi (byte) main::i#2 = (byte) $64 [phi:main->main::@1#1] -- vbuxx=vbuc1 
    ldx #$64
    // main::@1
  b1:
    // while(--i>0)
    // [6] (byte) main::i#1 ← -- (byte) main::i#2 -- vbuxx=_dec_vbuxx 
    dex
    // [7] if((byte) main::i#1>(byte) 0) goto main::@2 -- vbuxx_gt_0_then_la1 
    cpx #0
    bne b2
    // main::@3
    // *SCREEN = s
    // [8] *((const byte*) main::SCREEN#0) ← (byte) main::s#3 -- _deref_pbuc1=vbuyy 
    sty SCREEN
    // main::@return
    // }
    // [9] return 
    rts
    // main::@2
  b2:
    // if(i>50)
    // [10] if((byte) main::i#1>=(byte) $32+(byte) 1) goto main::@4 -- vbuxx_ge_vbuc1_then_la1 
    cpx #$32+1
    bcs b4
    // main::@5
    // s--;
    // [11] (byte) main::s#2 ← -- (byte) main::s#3 -- vbuyy=_dec_vbuyy 
    dey
    // [5] phi from main::@4 main::@5 to main::@1 [phi:main::@4/main::@5->main::@1]
    // [5] phi (byte) main::s#3 = (byte) main::s#1 [phi:main::@4/main::@5->main::@1#0] -- register_copy 
    // [5] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@4/main::@5->main::@1#1] -- register_copy 
    jmp b1
    // main::@4
  b4:
    // s++;
    // [12] (byte) main::s#1 ← ++ (byte) main::s#3 -- vbuyy=_inc_vbuyy 
    iny
    jmp b1
}
  // File Data

