Fixing pointer array-indexing *((signed word[]) VALS + (number) 1)
Fixing pointer array-indexing *((signed word[]) VALS + (byte) main::i)
Fixing pointer array-indexing *((signed word*) SCREEN + (byte) idx)
Culled Empty Block (label) main::@2

CONTROL FLOW GRAPH SSA
@begin: scope:[]  from
  (signed word[]) VALS#0 ← { (number) 1, (number) 2, (number) 3, (number) 4 }
  to:@1
main: scope:[main]  from @2
  (byte) idx#15 ← phi( @2/(byte) idx#17 )
  (signed word*) print::p#0 ← (signed word[]) VALS#0
  call print 
  to:main::@3
main::@3: scope:[main]  from main
  (byte) idx#8 ← phi( main/(byte) idx#6 )
  (byte) idx#0 ← (byte) idx#8
  (number~) main::$6 ← (number) 1 * (const byte) SIZEOF_SIGNED_WORD
  (signed word*~) main::$1 ← & *((signed word[]) VALS#0 + (number~) main::$6)
  (signed word*) print::p#1 ← (signed word*~) main::$1
  call print 
  to:main::@4
main::@4: scope:[main]  from main::@3
  (byte) idx#9 ← phi( main::@3/(byte) idx#6 )
  (byte) idx#1 ← (byte) idx#9
  (byte) main::i#0 ← (byte) 2
  to:main::@1
main::@1: scope:[main]  from main::@4 main::@5
  (byte) idx#16 ← phi( main::@4/(byte) idx#1 main::@5/(byte) idx#2 )
  (byte) main::i#2 ← phi( main::@4/(byte) main::i#0 main::@5/(byte) main::i#1 )
  (byte~) main::$7 ← (byte) main::i#2 * (const byte) SIZEOF_SIGNED_WORD
  (signed word*~) main::$3 ← & *((signed word[]) VALS#0 + (byte~) main::$7)
  (signed word*) print::p#2 ← (signed word*~) main::$3
  call print 
  to:main::@5
main::@5: scope:[main]  from main::@1
  (byte) main::i#3 ← phi( main::@1/(byte) main::i#2 )
  (byte) idx#10 ← phi( main::@1/(byte) idx#6 )
  (byte) idx#2 ← (byte) idx#10
  (byte) main::i#1 ← (byte) main::i#3 + rangenext(2,3)
  (bool~) main::$5 ← (byte) main::i#1 != rangelast(2,3)
  if((bool~) main::$5) goto main::@1
  to:main::@return
main::@return: scope:[main]  from main::@5
  (byte) idx#11 ← phi( main::@5/(byte) idx#2 )
  (byte) idx#3 ← (byte) idx#11
  return 
  to:@return
@1: scope:[]  from @begin
  (signed word*) SCREEN#0 ← ((signed word*)) (number) $400
  (byte) idx#4 ← (number) 0
  to:@2
print: scope:[print]  from main main::@1 main::@3
  (signed word*) print::p#3 ← phi( main/(signed word*) print::p#0 main::@1/(signed word*) print::p#2 main::@3/(signed word*) print::p#1 )
  (byte) idx#12 ← phi( main/(byte) idx#15 main::@1/(byte) idx#16 main::@3/(byte) idx#0 )
  (byte~) print::$0 ← (byte) idx#12 * (const byte) SIZEOF_SIGNED_WORD
  *((signed word*) SCREEN#0 + (byte~) print::$0) ← *((signed word*) print::p#3)
  (byte) idx#5 ← ++ (byte) idx#12
  to:print::@return
print::@return: scope:[print]  from print
  (byte) idx#13 ← phi( print/(byte) idx#5 )
  (byte) idx#6 ← (byte) idx#13
  return 
  to:@return
@2: scope:[]  from @1
  (byte) idx#17 ← phi( @1/(byte) idx#4 )
  call main 
  to:@3
@3: scope:[]  from @2
  (byte) idx#14 ← phi( @2/(byte) idx#3 )
  (byte) idx#7 ← (byte) idx#14
  to:@end
@end: scope:[]  from @3

SYMBOL TABLE SSA
(label) @1
(label) @2
(label) @3
(label) @begin
(label) @end
(signed word*) SCREEN
(signed word*) SCREEN#0
(const byte) SIZEOF_SIGNED_WORD = (byte) 2
(signed word[]) VALS
(signed word[]) VALS#0
(byte) idx
(byte) idx#0
(byte) idx#1
(byte) idx#10
(byte) idx#11
(byte) idx#12
(byte) idx#13
(byte) idx#14
(byte) idx#15
(byte) idx#16
(byte) idx#17
(byte) idx#2
(byte) idx#3
(byte) idx#4
(byte) idx#5
(byte) idx#6
(byte) idx#7
(byte) idx#8
(byte) idx#9
(void()) main()
(signed word*~) main::$1
(signed word*~) main::$3
(bool~) main::$5
(number~) main::$6
(byte~) main::$7
(label) main::@1
(label) main::@3
(label) main::@4
(label) main::@5
(label) main::@return
(byte) main::i
(byte) main::i#0
(byte) main::i#1
(byte) main::i#2
(byte) main::i#3
(void()) print((signed word*) print::p)
(byte~) print::$0
(label) print::@return
(signed word*) print::p
(signed word*) print::p#0
(signed word*) print::p#1
(signed word*) print::p#2
(signed word*) print::p#3

Adding number conversion cast (unumber) 1 in (number~) main::$6 ← (number) 1 * (const byte) SIZEOF_SIGNED_WORD
Adding number conversion cast (unumber) main::$6 in (number~) main::$6 ← (unumber)(number) 1 * (const byte) SIZEOF_SIGNED_WORD
Adding number conversion cast (unumber) 0 in (byte) idx#4 ← (number) 0
Successful SSA optimization PassNAddNumberTypeConversions
Added casts to value list in (signed word[]) VALS#0 ← (signed word[]){ (signed word)(number) 1, (signed word)(number) 2, (signed word)(number) 3, (signed word)(number) 4 }
Successful SSA optimization PassNAddInitializerValueListTypeCasts
Inlining cast (signed word*) SCREEN#0 ← (signed word*)(number) $400
Inlining cast (byte) idx#4 ← (unumber)(number) 0
Successful SSA optimization Pass2InlineCast
Simplifying constant integer cast 1
Simplifying constant integer cast 2
Simplifying constant integer cast 3
Simplifying constant integer cast 4
Simplifying constant integer cast 1
Simplifying constant pointer cast (signed word*) 1024
Simplifying constant integer cast 0
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (byte) 1
Finalized unsigned number type (byte) 0
Successful SSA optimization PassNFinalizeNumberTypeConversions
Inferred type updated to byte in (unumber~) main::$6 ← (byte) 1 * (const byte) SIZEOF_SIGNED_WORD
Alias (byte) idx#0 = (byte) idx#8 
Alias (signed word*) print::p#1 = (signed word*~) main::$1 
Alias (byte) idx#1 = (byte) idx#9 
Alias (signed word*) print::p#2 = (signed word*~) main::$3 
Alias (byte) main::i#2 = (byte) main::i#3 
Alias (byte) idx#10 = (byte) idx#2 (byte) idx#11 (byte) idx#3 
Alias (byte) idx#13 = (byte) idx#5 (byte) idx#6 
Alias (byte) idx#17 = (byte) idx#4 
Alias (byte) idx#14 = (byte) idx#7 
Successful SSA optimization Pass2AliasElimination
Identical Phi Values (byte) idx#15 (byte) idx#17
Identical Phi Values (byte) idx#0 (byte) idx#13
Identical Phi Values (byte) idx#1 (byte) idx#13
Identical Phi Values (byte) idx#10 (byte) idx#13
Identical Phi Values (byte) idx#14 (byte) idx#10
Successful SSA optimization Pass2IdenticalPhiElimination
Identical Phi Values (byte) idx#16 (byte) idx#13
Successful SSA optimization Pass2IdenticalPhiElimination
Simple Condition (bool~) main::$5 [22] if((byte) main::i#1!=rangelast(2,3)) goto main::@1
Successful SSA optimization Pass2ConditionalJumpSimplification
Rewriting array member address-of to pointer addition [7] (signed word*) print::p#1 ← (signed word[]) VALS#0 + (byte~) main::$6
Rewriting array member address-of to pointer addition [15] (signed word*) print::p#2 ← (signed word[]) VALS#0 + (byte~) main::$7
Successful SSA optimization PassNArrayElementAddressOfRewriting
Constant right-side identified [6] (byte~) main::$6 ← (byte) 1 * (const byte) SIZEOF_SIGNED_WORD
Successful SSA optimization Pass2ConstantRValueConsolidation
Identified constant from value list (signed word[]) { (signed word) 1, (signed word) 2, (signed word) 3, (signed word) 4 }
Successful SSA optimization Pass2ConstantInitializerValueLists
Constant (const signed word[]) VALS#0 = { 1, 2, 3, 4 }
Constant (const byte) main::$6 = 1*SIZEOF_SIGNED_WORD
Constant (const byte) main::i#0 = 2
Constant (const signed word*) SCREEN#0 = (signed word*) 1024
Constant (const byte) idx#17 = 0
Successful SSA optimization Pass2ConstantIdentification
Constant (const signed word*) print::p#0 = VALS#0
Successful SSA optimization Pass2ConstantIdentification
Resolved ranged next value [20] main::i#1 ← ++ main::i#2 to ++
Resolved ranged comparison value [22] if(main::i#1!=rangelast(2,3)) goto main::@1 to (number) 4
Adding number conversion cast (unumber) 4 in if((byte) main::i#1!=(number) 4) goto main::@1
Successful SSA optimization PassNAddNumberTypeConversions
Simplifying constant integer cast 4
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (byte) 4
Successful SSA optimization PassNFinalizeNumberTypeConversions
Constant right-side identified [1] (signed word*) print::p#1 ← (const signed word[]) VALS#0 + (const byte) main::$6
Successful SSA optimization Pass2ConstantRValueConsolidation
Constant (const signed word*) print::p#1 = VALS#0+main::$6
Successful SSA optimization Pass2ConstantIdentification
Rewriting multiplication to use shift [3] (byte~) main::$7 ← (byte) main::i#2 * (const byte) SIZEOF_SIGNED_WORD
Rewriting multiplication to use shift [10] (byte~) print::$0 ← (byte) idx#12 * (const byte) SIZEOF_SIGNED_WORD
Successful SSA optimization Pass2MultiplyToShiftRewriting
Inlining constant with var siblings (const byte) main::i#0
Inlining constant with var siblings (const signed word*) print::p#0
Inlining constant with var siblings (const signed word*) print::p#1
Inlining constant with var siblings (const byte) idx#17
Constant inlined main::i#0 = (byte) 2
Constant inlined main::$6 = (byte) 1*(const byte) SIZEOF_SIGNED_WORD
Constant inlined idx#17 = (byte) 0
Constant inlined print::p#1 = (const signed word[]) VALS#0+(byte) 1*(const byte) SIZEOF_SIGNED_WORD
Constant inlined print::p#0 = (const signed word[]) VALS#0
Successful SSA optimization Pass2ConstantInlining
Added new block during phi lifting main::@6(between main::@5 and main::@1)
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 @3
Adding NOP phi() at start of @end
Adding NOP phi() at start of main
Adding NOP phi() at start of main::@4
CALL GRAPH
Calls in [] to main:3 
Calls in [main] to print:7 print:9 print:16 

Created 3 initial phi equivalence classes
Coalesced [8] idx#19 ← idx#13
Coalesced (already) [14] idx#18 ← idx#13
Coalesced [15] print::p#4 ← print::p#2
Coalesced [20] main::i#4 ← main::i#1
Coalesced down to 3 phi equivalence classes
Culled Empty Block (label) @1
Culled Empty Block (label) @3
Culled Empty Block (label) main::@4
Culled Empty Block (label) main::@6
Renumbering block @2 to @1
Renumbering block main::@3 to main::@2
Renumbering block main::@5 to main::@3
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
Adding NOP phi() at start of main::@2

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()
  [5] call print 
  to:main::@2
main::@2: scope:[main]  from main
  [6] phi()
  [7] call print 
  to:main::@1
main::@1: scope:[main]  from main::@2 main::@3
  [8] (byte) main::i#2 ← phi( main::@2/(byte) 2 main::@3/(byte) main::i#1 )
  [9] (byte~) main::$7 ← (byte) main::i#2 << (byte) 1
  [10] (signed word*) print::p#2 ← (const signed word[]) VALS#0 + (byte~) main::$7
  [11] call print 
  to:main::@3
main::@3: scope:[main]  from main::@1
  [12] (byte) main::i#1 ← ++ (byte) main::i#2
  [13] if((byte) main::i#1!=(byte) 4) goto main::@1
  to:main::@return
main::@return: scope:[main]  from main::@3
  [14] return 
  to:@return
print: scope:[print]  from main main::@1 main::@2
  [15] (signed word*) print::p#3 ← phi( main/(const signed word[]) VALS#0 main::@1/(signed word*) print::p#2 main::@2/(const signed word[]) VALS#0+(byte) 1*(const byte) SIZEOF_SIGNED_WORD )
  [15] (byte) idx#12 ← phi( main/(byte) 0 main::@1/(byte) idx#13 main::@2/(byte) idx#13 )
  [16] (byte~) print::$0 ← (byte) idx#12 << (byte) 1
  [17] *((const signed word*) SCREEN#0 + (byte~) print::$0) ← *((signed word*) print::p#3)
  [18] (byte) idx#13 ← ++ (byte) idx#12
  to:print::@return
print::@return: scope:[print]  from print
  [19] return 
  to:@return


VARIABLE REGISTER WEIGHTS
(signed word*) SCREEN
(signed word[]) VALS
(byte) idx
(byte) idx#12 5.666666666666667
(byte) idx#13 1.3636363636363638
(void()) main()
(byte~) main::$7 22.0
(byte) main::i
(byte) main::i#1 16.5
(byte) main::i#2 8.25
(void()) print((signed word*) print::p)
(byte~) print::$0 4.0
(signed word*) print::p
(signed word*) print::p#2 22.0
(signed word*) print::p#3 6.5

Initial phi equivalence classes
[ main::i#2 main::i#1 ]
[ idx#12 idx#13 ]
[ print::p#3 print::p#2 ]
Added variable main::$7 to zero page equivalence class [ main::$7 ]
Added variable print::$0 to zero page equivalence class [ print::$0 ]
Complete equivalence classes
[ main::i#2 main::i#1 ]
[ idx#12 idx#13 ]
[ print::p#3 print::p#2 ]
[ main::$7 ]
[ print::$0 ]
Allocated zp ZP_BYTE:2 [ main::i#2 main::i#1 ]
Allocated zp ZP_BYTE:3 [ idx#12 idx#13 ]
Allocated zp ZP_WORD:4 [ print::p#3 print::p#2 ]
Allocated zp ZP_BYTE:6 [ main::$7 ]
Allocated zp ZP_BYTE:7 [ print::$0 ]

INITIAL ASM
Target platform is c64basic
  // File Comments
// Test address-of an array element
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(bbegin)
.pc = $80d "Program"
  // Global Constants & labels
  .const SIZEOF_SIGNED_WORD = 2
  .label SCREEN = $400
  .label idx = 3
  // @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 _7 = 6
    .label i = 2
    // [5] call print 
    // [15] phi from main to print [phi:main->print]
  print_from_main:
    // [15] phi (signed word*) print::p#3 = (const signed word[]) VALS#0 [phi:main->print#0] -- pwsz1=pwsc1 
    lda #<VALS
    sta.z print.p
    lda #>VALS
    sta.z print.p+1
    // [15] phi (byte) idx#12 = (byte) 0 [phi:main->print#1] -- vbuz1=vbuc1 
    lda #0
    sta.z idx
    jsr print
    // [6] phi from main to main::@2 [phi:main->main::@2]
  b2_from_main:
    jmp b2
    // main::@2
  b2:
    // [7] call print 
    // [15] phi from main::@2 to print [phi:main::@2->print]
  print_from_b2:
    // [15] phi (signed word*) print::p#3 = (const signed word[]) VALS#0+(byte) 1*(const byte) SIZEOF_SIGNED_WORD [phi:main::@2->print#0] -- pwsz1=pwsc1 
    lda #<VALS+1*SIZEOF_SIGNED_WORD
    sta.z print.p
    lda #>VALS+1*SIZEOF_SIGNED_WORD
    sta.z print.p+1
    // [15] phi (byte) idx#12 = (byte) idx#13 [phi:main::@2->print#1] -- register_copy 
    jsr print
    // [8] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
  b1_from_b2:
    // [8] phi (byte) main::i#2 = (byte) 2 [phi:main::@2->main::@1#0] -- vbuz1=vbuc1 
    lda #2
    sta.z i
    jmp b1
    // [8] phi from main::@3 to main::@1 [phi:main::@3->main::@1]
  b1_from_b3:
    // [8] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@3->main::@1#0] -- register_copy 
    jmp b1
    // main::@1
  b1:
    // [9] (byte~) main::$7 ← (byte) main::i#2 << (byte) 1 -- vbuz1=vbuz2_rol_1 
    lda.z i
    asl
    sta.z _7
    // [10] (signed word*) print::p#2 ← (const signed word[]) VALS#0 + (byte~) main::$7 -- pwsz1=pwsc1_plus_vbuz2 
    lda.z _7
    clc
    adc #<VALS
    sta.z print.p
    lda #>VALS
    adc #0
    sta.z print.p+1
    // [11] call print 
    // [15] phi from main::@1 to print [phi:main::@1->print]
  print_from_b1:
    // [15] phi (signed word*) print::p#3 = (signed word*) print::p#2 [phi:main::@1->print#0] -- register_copy 
    // [15] phi (byte) idx#12 = (byte) idx#13 [phi:main::@1->print#1] -- register_copy 
    jsr print
    jmp b3
    // main::@3
  b3:
    // [12] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuz1=_inc_vbuz1 
    inc.z i
    // [13] if((byte) main::i#1!=(byte) 4) goto main::@1 -- vbuz1_neq_vbuc1_then_la1 
    lda #4
    cmp.z i
    bne b1_from_b3
    jmp breturn
    // main::@return
  breturn:
    // [14] return 
    rts
}
  // print
// print(signed word* zeropage(4) p)
print: {
    .label _0 = 7
    .label p = 4
    // [16] (byte~) print::$0 ← (byte) idx#12 << (byte) 1 -- vbuz1=vbuz2_rol_1 
    lda.z idx
    asl
    sta.z _0
    // [17] *((const signed word*) SCREEN#0 + (byte~) print::$0) ← *((signed word*) print::p#3) -- pwsc1_derefidx_vbuz1=_deref_pwsz2 
    ldx.z _0
    ldy #0
    lda (p),y
    sta SCREEN,x
    iny
    lda (p),y
    sta SCREEN+1,x
    // [18] (byte) idx#13 ← ++ (byte) idx#12 -- vbuz1=_inc_vbuz1 
    inc.z idx
    jmp breturn
    // print::@return
  breturn:
    // [19] return 
    rts
}
  // File Data
  VALS: .word 1, 2, 3, 4

REGISTER UPLIFT POTENTIAL REGISTERS
Statement [9] (byte~) main::$7 ← (byte) main::i#2 << (byte) 1 [ main::i#2 main::$7 idx#13 ] ( main:2 [ main::i#2 main::$7 idx#13 ] ) always clobbers reg byte a 
Removing always clobbered register reg byte a as potential for zp ZP_BYTE:2 [ main::i#2 main::i#1 ]
Removing always clobbered register reg byte a as potential for zp ZP_BYTE:3 [ idx#12 idx#13 ]
Statement [10] (signed word*) print::p#2 ← (const signed word[]) VALS#0 + (byte~) main::$7 [ main::i#2 print::p#2 idx#13 ] ( main:2 [ main::i#2 print::p#2 idx#13 ] ) always clobbers reg byte a 
Statement [16] (byte~) print::$0 ← (byte) idx#12 << (byte) 1 [ idx#12 print::p#3 print::$0 ] ( main:2::print:5 [ idx#12 print::p#3 print::$0 ] main:2::print:7 [ idx#12 print::p#3 print::$0 ] main:2::print:11 [ main::i#2 idx#12 print::p#3 print::$0 ] ) always clobbers reg byte a 
Statement [17] *((const signed word*) SCREEN#0 + (byte~) print::$0) ← *((signed word*) print::p#3) [ idx#12 ] ( main:2::print:5 [ idx#12 ] main:2::print:7 [ idx#12 ] main:2::print:11 [ main::i#2 idx#12 ] ) always clobbers reg byte a reg byte y 
Removing always clobbered register reg byte y as potential for zp ZP_BYTE:3 [ idx#12 idx#13 ]
Removing always clobbered register reg byte y as potential for zp ZP_BYTE:2 [ main::i#2 main::i#1 ]
Statement [9] (byte~) main::$7 ← (byte) main::i#2 << (byte) 1 [ main::i#2 main::$7 idx#13 ] ( main:2 [ main::i#2 main::$7 idx#13 ] ) always clobbers reg byte a 
Statement [10] (signed word*) print::p#2 ← (const signed word[]) VALS#0 + (byte~) main::$7 [ main::i#2 print::p#2 idx#13 ] ( main:2 [ main::i#2 print::p#2 idx#13 ] ) always clobbers reg byte a 
Statement [16] (byte~) print::$0 ← (byte) idx#12 << (byte) 1 [ idx#12 print::p#3 print::$0 ] ( main:2::print:5 [ idx#12 print::p#3 print::$0 ] main:2::print:7 [ idx#12 print::p#3 print::$0 ] main:2::print:11 [ main::i#2 idx#12 print::p#3 print::$0 ] ) always clobbers reg byte a 
Statement [17] *((const signed word*) SCREEN#0 + (byte~) print::$0) ← *((signed word*) print::p#3) [ idx#12 ] ( main:2::print:5 [ idx#12 ] main:2::print:7 [ idx#12 ] main:2::print:11 [ main::i#2 idx#12 ] ) always clobbers reg byte a reg byte y 
Potential registers zp ZP_BYTE:2 [ main::i#2 main::i#1 ] : zp ZP_BYTE:2 , reg byte x , 
Potential registers zp ZP_BYTE:3 [ idx#12 idx#13 ] : zp ZP_BYTE:3 , reg byte x , 
Potential registers zp ZP_WORD:4 [ print::p#3 print::p#2 ] : zp ZP_WORD:4 , 
Potential registers zp ZP_BYTE:6 [ main::$7 ] : zp ZP_BYTE:6 , reg byte a , reg byte x , reg byte y , 
Potential registers zp ZP_BYTE:7 [ print::$0 ] : zp ZP_BYTE:7 , reg byte a , reg byte x , reg byte y , 

REGISTER UPLIFT SCOPES
Uplift Scope [main] 24.75: zp ZP_BYTE:2 [ main::i#2 main::i#1 ] 22: zp ZP_BYTE:6 [ main::$7 ] 
Uplift Scope [print] 28.5: zp ZP_WORD:4 [ print::p#3 print::p#2 ] 4: zp ZP_BYTE:7 [ print::$0 ] 
Uplift Scope [] 7.03: zp ZP_BYTE:3 [ idx#12 idx#13 ] 

Uplifting [main] best 572 combination zp ZP_BYTE:2 [ main::i#2 main::i#1 ] reg byte a [ main::$7 ] 
Uplifting [print] best 568 combination zp ZP_WORD:4 [ print::p#3 print::p#2 ] reg byte a [ print::$0 ] 
Uplifting [] best 568 combination zp ZP_BYTE:3 [ idx#12 idx#13 ] 
Attempting to uplift remaining variables inzp ZP_BYTE:2 [ main::i#2 main::i#1 ]
Uplifting [main] best 568 combination zp ZP_BYTE:2 [ main::i#2 main::i#1 ] 
Attempting to uplift remaining variables inzp ZP_BYTE:3 [ idx#12 idx#13 ]
Uplifting [] best 568 combination zp ZP_BYTE:3 [ idx#12 idx#13 ] 

ASSEMBLER BEFORE OPTIMIZATION
  // File Comments
// Test address-of an array element
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(bbegin)
.pc = $80d "Program"
  // Global Constants & labels
  .const SIZEOF_SIGNED_WORD = 2
  .label SCREEN = $400
  .label idx = 3
  // @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 i = 2
    // [5] call print 
    // [15] phi from main to print [phi:main->print]
  print_from_main:
    // [15] phi (signed word*) print::p#3 = (const signed word[]) VALS#0 [phi:main->print#0] -- pwsz1=pwsc1 
    lda #<VALS
    sta.z print.p
    lda #>VALS
    sta.z print.p+1
    // [15] phi (byte) idx#12 = (byte) 0 [phi:main->print#1] -- vbuz1=vbuc1 
    lda #0
    sta.z idx
    jsr print
    // [6] phi from main to main::@2 [phi:main->main::@2]
  b2_from_main:
    jmp b2
    // main::@2
  b2:
    // [7] call print 
    // [15] phi from main::@2 to print [phi:main::@2->print]
  print_from_b2:
    // [15] phi (signed word*) print::p#3 = (const signed word[]) VALS#0+(byte) 1*(const byte) SIZEOF_SIGNED_WORD [phi:main::@2->print#0] -- pwsz1=pwsc1 
    lda #<VALS+1*SIZEOF_SIGNED_WORD
    sta.z print.p
    lda #>VALS+1*SIZEOF_SIGNED_WORD
    sta.z print.p+1
    // [15] phi (byte) idx#12 = (byte) idx#13 [phi:main::@2->print#1] -- register_copy 
    jsr print
    // [8] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
  b1_from_b2:
    // [8] phi (byte) main::i#2 = (byte) 2 [phi:main::@2->main::@1#0] -- vbuz1=vbuc1 
    lda #2
    sta.z i
    jmp b1
    // [8] phi from main::@3 to main::@1 [phi:main::@3->main::@1]
  b1_from_b3:
    // [8] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@3->main::@1#0] -- register_copy 
    jmp b1
    // main::@1
  b1:
    // [9] (byte~) main::$7 ← (byte) main::i#2 << (byte) 1 -- vbuaa=vbuz1_rol_1 
    lda.z i
    asl
    // [10] (signed word*) print::p#2 ← (const signed word[]) VALS#0 + (byte~) main::$7 -- pwsz1=pwsc1_plus_vbuaa 
    clc
    adc #<VALS
    sta.z print.p
    lda #>VALS
    adc #0
    sta.z print.p+1
    // [11] call print 
    // [15] phi from main::@1 to print [phi:main::@1->print]
  print_from_b1:
    // [15] phi (signed word*) print::p#3 = (signed word*) print::p#2 [phi:main::@1->print#0] -- register_copy 
    // [15] phi (byte) idx#12 = (byte) idx#13 [phi:main::@1->print#1] -- register_copy 
    jsr print
    jmp b3
    // main::@3
  b3:
    // [12] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuz1=_inc_vbuz1 
    inc.z i
    // [13] if((byte) main::i#1!=(byte) 4) goto main::@1 -- vbuz1_neq_vbuc1_then_la1 
    lda #4
    cmp.z i
    bne b1_from_b3
    jmp breturn
    // main::@return
  breturn:
    // [14] return 
    rts
}
  // print
// print(signed word* zeropage(4) p)
print: {
    .label p = 4
    // [16] (byte~) print::$0 ← (byte) idx#12 << (byte) 1 -- vbuaa=vbuz1_rol_1 
    lda.z idx
    asl
    // [17] *((const signed word*) SCREEN#0 + (byte~) print::$0) ← *((signed word*) print::p#3) -- pwsc1_derefidx_vbuaa=_deref_pwsz1 
    tax
    ldy #0
    lda (p),y
    sta SCREEN,x
    iny
    lda (p),y
    sta SCREEN+1,x
    // [18] (byte) idx#13 ← ++ (byte) idx#12 -- vbuz1=_inc_vbuz1 
    inc.z idx
    jmp breturn
    // print::@return
  breturn:
    // [19] return 
    rts
}
  // File Data
  VALS: .word 1, 2, 3, 4

ASSEMBLER OPTIMIZATIONS
Removing instruction jmp b1
Removing instruction jmp bend
Removing instruction jmp b2
Removing instruction jmp b1
Removing instruction jmp b3
Removing instruction jmp breturn
Removing instruction jmp breturn
Succesful ASM optimization Pass5NextJumpElimination
Replacing label b1_from_b3 with b1
Removing instruction b1_from_bbegin:
Removing instruction b1:
Removing instruction main_from_b1:
Removing instruction bend_from_b1:
Removing instruction b2_from_main:
Removing instruction print_from_b2:
Removing instruction b1_from_b3:
Succesful ASM optimization Pass5RedundantLabelElimination
Removing instruction bend:
Removing instruction print_from_main:
Removing instruction b2:
Removing instruction b1_from_b2:
Removing instruction print_from_b1:
Removing instruction b3:
Removing instruction breturn:
Removing instruction breturn:
Succesful ASM optimization Pass5UnusedLabelElimination
Updating BasicUpstart to call main directly
Removing instruction jsr main
Succesful ASM optimization Pass5SkipBegin
Removing instruction jmp b1
Succesful ASM optimization Pass5NextJumpElimination
Removing instruction bbegin:
Succesful ASM optimization Pass5UnusedLabelElimination

FINAL SYMBOL TABLE
(label) @1
(label) @begin
(label) @end
(signed word*) SCREEN
(const signed word*) SCREEN#0 SCREEN = (signed word*) 1024
(const byte) SIZEOF_SIGNED_WORD SIZEOF_SIGNED_WORD = (byte) 2
(signed word[]) VALS
(const signed word[]) VALS#0 VALS = { (signed word) 1, (signed word) 2, (signed word) 3, (signed word) 4 }
(byte) idx
(byte) idx#12 idx zp ZP_BYTE:3 5.666666666666667
(byte) idx#13 idx zp ZP_BYTE:3 1.3636363636363638
(void()) main()
(byte~) main::$7 reg byte a 22.0
(label) main::@1
(label) main::@2
(label) main::@3
(label) main::@return
(byte) main::i
(byte) main::i#1 i zp ZP_BYTE:2 16.5
(byte) main::i#2 i zp ZP_BYTE:2 8.25
(void()) print((signed word*) print::p)
(byte~) print::$0 reg byte a 4.0
(label) print::@return
(signed word*) print::p
(signed word*) print::p#2 p zp ZP_WORD:4 22.0
(signed word*) print::p#3 p zp ZP_WORD:4 6.5

zp ZP_BYTE:2 [ main::i#2 main::i#1 ]
zp ZP_BYTE:3 [ idx#12 idx#13 ]
zp ZP_WORD:4 [ print::p#3 print::p#2 ]
reg byte a [ main::$7 ]
reg byte a [ print::$0 ]


FINAL ASSEMBLER
Score: 457

  // File Comments
// Test address-of an array element
  // Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
  // Global Constants & labels
  .const SIZEOF_SIGNED_WORD = 2
  .label SCREEN = $400
  .label idx = 3
  // @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 i = 2
    // print(VALS)
    // [5] call print 
    // [15] phi from main to print [phi:main->print]
    // [15] phi (signed word*) print::p#3 = (const signed word[]) VALS#0 [phi:main->print#0] -- pwsz1=pwsc1 
    lda #<VALS
    sta.z print.p
    lda #>VALS
    sta.z print.p+1
    // [15] phi (byte) idx#12 = (byte) 0 [phi:main->print#1] -- vbuz1=vbuc1 
    lda #0
    sta.z idx
    jsr print
    // [6] phi from main to main::@2 [phi:main->main::@2]
    // main::@2
    // print(&VALS[1])
    // [7] call print 
    // [15] phi from main::@2 to print [phi:main::@2->print]
    // [15] phi (signed word*) print::p#3 = (const signed word[]) VALS#0+(byte) 1*(const byte) SIZEOF_SIGNED_WORD [phi:main::@2->print#0] -- pwsz1=pwsc1 
    lda #<VALS+1*SIZEOF_SIGNED_WORD
    sta.z print.p
    lda #>VALS+1*SIZEOF_SIGNED_WORD
    sta.z print.p+1
    // [15] phi (byte) idx#12 = (byte) idx#13 [phi:main::@2->print#1] -- register_copy 
    jsr print
    // [8] phi from main::@2 to main::@1 [phi:main::@2->main::@1]
    // [8] phi (byte) main::i#2 = (byte) 2 [phi:main::@2->main::@1#0] -- vbuz1=vbuc1 
    lda #2
    sta.z i
    // [8] phi from main::@3 to main::@1 [phi:main::@3->main::@1]
    // [8] phi (byte) main::i#2 = (byte) main::i#1 [phi:main::@3->main::@1#0] -- register_copy 
    // main::@1
  b1:
    // &VALS[i]
    // [9] (byte~) main::$7 ← (byte) main::i#2 << (byte) 1 -- vbuaa=vbuz1_rol_1 
    lda.z i
    asl
    // print(&VALS[i])
    // [10] (signed word*) print::p#2 ← (const signed word[]) VALS#0 + (byte~) main::$7 -- pwsz1=pwsc1_plus_vbuaa 
    clc
    adc #<VALS
    sta.z print.p
    lda #>VALS
    adc #0
    sta.z print.p+1
    // [11] call print 
    // [15] phi from main::@1 to print [phi:main::@1->print]
    // [15] phi (signed word*) print::p#3 = (signed word*) print::p#2 [phi:main::@1->print#0] -- register_copy 
    // [15] phi (byte) idx#12 = (byte) idx#13 [phi:main::@1->print#1] -- register_copy 
    jsr print
    // main::@3
    // for(char i:2..3)
    // [12] (byte) main::i#1 ← ++ (byte) main::i#2 -- vbuz1=_inc_vbuz1 
    inc.z i
    // [13] if((byte) main::i#1!=(byte) 4) goto main::@1 -- vbuz1_neq_vbuc1_then_la1 
    lda #4
    cmp.z i
    bne b1
    // main::@return
    // }
    // [14] return 
    rts
}
  // print
// print(signed word* zeropage(4) p)
print: {
    .label p = 4
    // SCREEN[idx++] = *p
    // [16] (byte~) print::$0 ← (byte) idx#12 << (byte) 1 -- vbuaa=vbuz1_rol_1 
    lda.z idx
    asl
    // [17] *((const signed word*) SCREEN#0 + (byte~) print::$0) ← *((signed word*) print::p#3) -- pwsc1_derefidx_vbuaa=_deref_pwsz1 
    tax
    ldy #0
    lda (p),y
    sta SCREEN,x
    iny
    lda (p),y
    sta SCREEN+1,x
    // SCREEN[idx++] = *p;
    // [18] (byte) idx#13 ← ++ (byte) idx#12 -- vbuz1=_inc_vbuz1 
    inc.z idx
    // print::@return
    // }
    // [19] return 
    rts
}
  // File Data
  VALS: .word 1, 2, 3, 4

