Culled Empty Block (label) @1
Culled Empty Block (label) print_msg::@4
Culled Empty Block (label) print::@4
Culled Empty Block (label) print::@3
Culled Empty Block (label) print::@5
Culled Empty Block (label) print::@6

CONTROL FLOW GRAPH SSA
@begin: scope:[]  from
  to:@2
main: scope:[main]  from @3
  (byte*) screen#17 ← phi( @3/(byte*) screen#20 )
  (byte) print_msg::idx#0 ← (number) 1
  call print_msg 
  to:main::@1
main::@1: scope:[main]  from main
  (byte*) screen#9 ← phi( main/(byte*) screen#4 )
  (byte*) screen#0 ← (byte*) screen#9
  (byte) print_msg::idx#1 ← (number) 2
  call print_msg 
  to:main::@2
main::@2: scope:[main]  from main::@1
  (byte*) screen#10 ← phi( main::@1/(byte*) screen#4 )
  (byte*) screen#1 ← (byte*) screen#10
  to:main::@return
main::@return: scope:[main]  from main::@2
  (byte*) screen#11 ← phi( main::@2/(byte*) screen#1 )
  (byte*) screen#2 ← (byte*) screen#11
  return 
  to:@return
print_msg: scope:[print_msg]  from main main::@1
  (byte*) screen#24 ← phi( main/(byte*) screen#17 main::@1/(byte*) screen#0 )
  (byte) print_msg::idx#2 ← phi( main/(byte) print_msg::idx#0 main::@1/(byte) print_msg::idx#1 )
  (byte*) print_msg::msg#0 ← (byte*) 0
  (bool~) print_msg::$0 ← (byte) print_msg::idx#2 == (number) 1
  if((bool~) print_msg::$0) goto print_msg::@1
  to:print_msg::@3
print_msg::@1: scope:[print_msg]  from print_msg
  (byte*) screen#21 ← phi( print_msg/(byte*) screen#24 )
  (byte*) print_msg::msg#1 ← (const string) print_msg::$2
  to:print_msg::@2
print_msg::@3: scope:[print_msg]  from print_msg
  (byte*) screen#22 ← phi( print_msg/(byte*) screen#24 )
  (byte*) print_msg::msg#2 ← (const string) print_msg::$3
  to:print_msg::@2
print_msg::@2: scope:[print_msg]  from print_msg::@1 print_msg::@3
  (byte*) screen#18 ← phi( print_msg::@1/(byte*) screen#21 print_msg::@3/(byte*) screen#22 )
  (byte*) print_msg::msg#3 ← phi( print_msg::@1/(byte*) print_msg::msg#1 print_msg::@3/(byte*) print_msg::msg#2 )
  (byte*) print::msg#0 ← (byte*) print_msg::msg#3
  call print 
  to:print_msg::@5
print_msg::@5: scope:[print_msg]  from print_msg::@2
  (byte*) screen#12 ← phi( print_msg::@2/(byte*) screen#7 )
  (byte*) screen#3 ← (byte*) screen#12
  to:print_msg::@return
print_msg::@return: scope:[print_msg]  from print_msg::@5
  (byte*) screen#13 ← phi( print_msg::@5/(byte*) screen#3 )
  (byte*) screen#4 ← (byte*) screen#13
  return 
  to:@return
@2: scope:[]  from @begin
  (byte*) screen#5 ← ((byte*)) (number) $400
  to:@3
print: scope:[print]  from print_msg::@2
  (byte*) screen#23 ← phi( print_msg::@2/(byte*) screen#18 )
  (byte*) print::msg#4 ← phi( print_msg::@2/(byte*) print::msg#0 )
  to:print::@1
print::@1: scope:[print]  from print print::@2
  (byte*) screen#19 ← phi( print/(byte*) screen#23 print::@2/(byte*) screen#6 )
  (byte*) print::msg#2 ← phi( print/(byte*) print::msg#4 print::@2/(byte*) print::msg#1 )
  (bool~) print::$0 ← *((byte*) print::msg#2) != (byte) '@'
  if((bool~) print::$0) goto print::@2
  to:print::@return
print::@2: scope:[print]  from print::@1
  (byte*) screen#14 ← phi( print::@1/(byte*) screen#19 )
  (byte*) print::msg#3 ← phi( print::@1/(byte*) print::msg#2 )
  *((byte*) screen#14) ← *((byte*) print::msg#3)
  (byte*) screen#6 ← ++ (byte*) screen#14
  (byte*) print::msg#1 ← ++ (byte*) print::msg#3
  to:print::@1
print::@return: scope:[print]  from print::@1
  (byte*) screen#15 ← phi( print::@1/(byte*) screen#19 )
  (byte*) screen#7 ← (byte*) screen#15
  return 
  to:@return
@3: scope:[]  from @2
  (byte*) screen#20 ← phi( @2/(byte*) screen#5 )
  call main 
  to:@4
@4: scope:[]  from @3
  (byte*) screen#16 ← phi( @3/(byte*) screen#2 )
  (byte*) screen#8 ← (byte*) screen#16
  to:@end
@end: scope:[]  from @4

SYMBOL TABLE SSA
(label) @2
(label) @3
(label) @4
(label) @begin
(label) @end
(void()) main()
(label) main::@1
(label) main::@2
(label) main::@return
(void()) print((byte*) print::msg)
(bool~) print::$0
(label) print::@1
(label) print::@2
(label) print::@return
(byte*) print::msg
(byte*) print::msg#0
(byte*) print::msg#1
(byte*) print::msg#2
(byte*) print::msg#3
(byte*) print::msg#4
(void()) print_msg((byte) print_msg::idx)
(bool~) print_msg::$0
(const string) print_msg::$2 = (string) "Hello @"
(const string) print_msg::$3 = (string) "World!@"
(label) print_msg::@1
(label) print_msg::@2
(label) print_msg::@3
(label) print_msg::@5
(label) print_msg::@return
(byte) print_msg::idx
(byte) print_msg::idx#0
(byte) print_msg::idx#1
(byte) print_msg::idx#2
(byte*) print_msg::msg
(byte*) print_msg::msg#0
(byte*) print_msg::msg#1
(byte*) print_msg::msg#2
(byte*) print_msg::msg#3
(byte*) screen
(byte*) screen#0
(byte*) screen#1
(byte*) screen#10
(byte*) screen#11
(byte*) screen#12
(byte*) screen#13
(byte*) screen#14
(byte*) screen#15
(byte*) screen#16
(byte*) screen#17
(byte*) screen#18
(byte*) screen#19
(byte*) screen#2
(byte*) screen#20
(byte*) screen#21
(byte*) screen#22
(byte*) screen#23
(byte*) screen#24
(byte*) screen#3
(byte*) screen#4
(byte*) screen#5
(byte*) screen#6
(byte*) screen#7
(byte*) screen#8
(byte*) screen#9

Adding number conversion cast (unumber) 1 in (byte) print_msg::idx#0 ← (number) 1
Adding number conversion cast (unumber) 2 in (byte) print_msg::idx#1 ← (number) 2
Adding number conversion cast (unumber) 1 in (bool~) print_msg::$0 ← (byte) print_msg::idx#2 == (number) 1
Successful SSA optimization PassNAddNumberTypeConversions
Inlining cast (byte) print_msg::idx#0 ← (unumber)(number) 1
Inlining cast (byte) print_msg::idx#1 ← (unumber)(number) 2
Inlining cast (byte*) screen#5 ← (byte*)(number) $400
Successful SSA optimization Pass2InlineCast
Simplifying constant integer cast 1
Simplifying constant integer cast 2
Simplifying constant integer cast 1
Simplifying constant pointer cast (byte*) 1024
Successful SSA optimization PassNCastSimplification
Finalized unsigned number type (byte) 1
Finalized unsigned number type (byte) 2
Finalized unsigned number type (byte) 1
Successful SSA optimization PassNFinalizeNumberTypeConversions
Alias (byte*) screen#0 = (byte*) screen#9 
Alias (byte*) screen#1 = (byte*) screen#10 (byte*) screen#11 (byte*) screen#2 
Alias (byte*) screen#21 = (byte*) screen#24 (byte*) screen#22 
Alias (byte*) screen#12 = (byte*) screen#3 (byte*) screen#13 (byte*) screen#4 
Alias (byte*) print::msg#2 = (byte*) print::msg#3 
Alias (byte*) screen#14 = (byte*) screen#19 (byte*) screen#15 (byte*) screen#7 
Alias (byte*) screen#20 = (byte*) screen#5 
Alias (byte*) screen#16 = (byte*) screen#8 
Successful SSA optimization Pass2AliasElimination
Alias (byte*) screen#18 = (byte*) screen#21 
Successful SSA optimization Pass2AliasElimination
Identical Phi Values (byte*) screen#17 (byte*) screen#20
Identical Phi Values (byte*) screen#0 (byte*) screen#12
Identical Phi Values (byte*) screen#1 (byte*) screen#12
Identical Phi Values (byte*) screen#12 (byte*) screen#14
Identical Phi Values (byte*) print::msg#4 (byte*) print::msg#0
Identical Phi Values (byte*) screen#23 (byte*) screen#18
Identical Phi Values (byte*) screen#16 (byte*) screen#1
Successful SSA optimization Pass2IdenticalPhiElimination
Simple Condition (bool~) print_msg::$0 [15] if((byte) print_msg::idx#2==(byte) 1) goto print_msg::@1
Simple Condition (bool~) print::$0 [32] if(*((byte*) print::msg#2)!=(byte) '@') goto print::@2
Successful SSA optimization Pass2ConditionalJumpSimplification
Constant (const byte) print_msg::idx#0 = 1
Constant (const byte) print_msg::idx#1 = 2
Constant (const byte*) print_msg::msg#0 = (byte*) 0
Constant (const byte*) print_msg::msg#1 = print_msg::$2
Constant (const byte*) print_msg::msg#2 = print_msg::$3
Constant (const byte*) screen#20 = (byte*) 1024
Successful SSA optimization Pass2ConstantIdentification
Eliminating unused constant (const byte*) print_msg::msg#0
Successful SSA optimization PassNEliminateUnusedVars
Inlining constant with var siblings (const byte) print_msg::idx#0
Inlining constant with var siblings (const byte) print_msg::idx#1
Inlining constant with var siblings (const byte*) print_msg::msg#1
Inlining constant with var siblings (const byte*) print_msg::msg#2
Inlining constant with var siblings (const byte*) screen#20
Constant inlined print_msg::idx#1 = (byte) 2
Constant inlined print_msg::idx#0 = (byte) 1
Constant inlined screen#20 = (byte*) 1024
Constant inlined print_msg::$3 = (const byte*) print_msg::msg#2
Constant inlined print_msg::$2 = (const byte*) print_msg::msg#1
Successful SSA optimization Pass2ConstantInlining
Inlining constant with var siblings (const byte*) print_msg::msg#1
Inlining constant with var siblings (const byte*) print_msg::msg#2
Inlining constant with var siblings (const byte*) print_msg::msg#1
Inlining constant with var siblings (const byte*) print_msg::msg#2
Adding NOP phi() at start of @begin
Adding NOP phi() at start of @2
Adding NOP phi() at start of @3
Adding NOP phi() at start of @4
Adding NOP phi() at start of @end
Adding NOP phi() at start of main
Adding NOP phi() at start of main::@2
Adding NOP phi() at start of print_msg::@3
Adding NOP phi() at start of print_msg::@5
Adding NOP phi() at start of print_msg::@1
CALL GRAPH
Calls in [] to main:3 
Calls in [main] to print_msg:7 print_msg:9 
Calls in [print_msg] to print:17 

Created 5 initial phi equivalence classes
Coalesced [8] screen#25 ← screen#14
Coalesced [21] print::msg#5 ← print::msg#0
Coalesced (already) [22] screen#26 ← screen#18
Coalesced [29] print::msg#6 ← print::msg#1
Coalesced [30] screen#27 ← screen#6
Coalesced down to 4 phi equivalence classes
Culled Empty Block (label) @2
Culled Empty Block (label) @4
Culled Empty Block (label) main::@2
Culled Empty Block (label) print_msg::@3
Culled Empty Block (label) print_msg::@5
Renumbering block @3 to @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
Adding NOP phi() at start of main::@1
Adding NOP phi() at start of print_msg::@1
Adding NOP phi() at start of print

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_msg 
  to:main::@1
main::@1: scope:[main]  from main
  [6] phi()
  [7] call print_msg 
  to:main::@return
main::@return: scope:[main]  from main::@1
  [8] return 
  to:@return
print_msg: scope:[print_msg]  from main main::@1
  [9] (byte*) screen#18 ← phi( main/(byte*) 1024 main::@1/(byte*) screen#14 )
  [9] (byte) print_msg::idx#2 ← phi( main/(byte) 1 main::@1/(byte) 2 )
  [10] if((byte) print_msg::idx#2==(byte) 1) goto print_msg::@1
  to:print_msg::@2
print_msg::@1: scope:[print_msg]  from print_msg
  [11] phi()
  to:print_msg::@2
print_msg::@2: scope:[print_msg]  from print_msg print_msg::@1
  [12] (byte*) print_msg::msg#3 ← phi( print_msg::@1/(const byte*) print_msg::msg#1 print_msg/(const byte*) print_msg::msg#2 )
  [13] (byte*) print::msg#0 ← (byte*) print_msg::msg#3
  [14] call print 
  to:print_msg::@return
print_msg::@return: scope:[print_msg]  from print_msg::@2
  [15] return 
  to:@return
print: scope:[print]  from print_msg::@2
  [16] phi()
  to:print::@1
print::@1: scope:[print]  from print print::@2
  [17] (byte*) screen#14 ← phi( print/(byte*) screen#18 print::@2/(byte*) screen#6 )
  [17] (byte*) print::msg#2 ← phi( print/(byte*) print::msg#0 print::@2/(byte*) print::msg#1 )
  [18] if(*((byte*) print::msg#2)!=(byte) '@') goto print::@2
  to:print::@return
print::@return: scope:[print]  from print::@1
  [19] return 
  to:@return
print::@2: scope:[print]  from print::@1
  [20] *((byte*) screen#14) ← *((byte*) print::msg#2)
  [21] (byte*) screen#6 ← ++ (byte*) screen#14
  [22] (byte*) print::msg#1 ← ++ (byte*) print::msg#2
  to:print::@1


VARIABLE REGISTER WEIGHTS
(void()) main()
(void()) print((byte*) print::msg)
(byte*) print::msg
(byte*) print::msg#0 2.0
(byte*) print::msg#1 22.0
(byte*) print::msg#2 11.5
(void()) print_msg((byte) print_msg::idx)
(byte) print_msg::idx
(byte) print_msg::idx#2 2.0
(byte*) print_msg::msg
(byte*) print_msg::msg#3 2.0
(byte*) screen
(byte*) screen#14 4.625
(byte*) screen#18 0.6666666666666666
(byte*) screen#6 11.0

Initial phi equivalence classes
[ print_msg::idx#2 ]
[ screen#18 screen#14 screen#6 ]
[ print_msg::msg#3 ]
[ print::msg#2 print::msg#0 print::msg#1 ]
Complete equivalence classes
[ print_msg::idx#2 ]
[ screen#18 screen#14 screen#6 ]
[ print_msg::msg#3 ]
[ print::msg#2 print::msg#0 print::msg#1 ]
Allocated zp ZP_BYTE:2 [ print_msg::idx#2 ]
Allocated zp ZP_WORD:3 [ screen#18 screen#14 screen#6 ]
Allocated zp ZP_WORD:5 [ print_msg::msg#3 ]
Allocated zp ZP_WORD:7 [ print::msg#2 print::msg#0 print::msg#1 ]

INITIAL ASM
  // File Comments
// Inline Strings in assignments
  // Basic Upstart
.pc = $801 "Basic"
:BasicUpstart(bbegin)
.pc = $80d "Program"
  // Global Constants & labels
  .label screen = 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: {
    // [5] call print_msg 
    // [9] phi from main to print_msg [phi:main->print_msg]
  print_msg_from_main:
    // [9] phi (byte*) screen#18 = (byte*) 1024 [phi:main->print_msg#0] -- pbuz1=pbuc1 
    lda #<$400
    sta screen
    lda #>$400
    sta screen+1
    // [9] phi (byte) print_msg::idx#2 = (byte) 1 [phi:main->print_msg#1] -- vbuz1=vbuc1 
    lda #1
    sta print_msg.idx
    jsr print_msg
    // [6] phi from main to main::@1 [phi:main->main::@1]
  b1_from_main:
    jmp b1
    // main::@1
  b1:
    // [7] call print_msg 
    // [9] phi from main::@1 to print_msg [phi:main::@1->print_msg]
  print_msg_from_b1:
    // [9] phi (byte*) screen#18 = (byte*) screen#14 [phi:main::@1->print_msg#0] -- register_copy 
    // [9] phi (byte) print_msg::idx#2 = (byte) 2 [phi:main::@1->print_msg#1] -- vbuz1=vbuc1 
    lda #2
    sta print_msg.idx
    jsr print_msg
    jmp breturn
    // main::@return
  breturn:
    // [8] return 
    rts
}
  // print_msg
// print_msg(byte zeropage(2) idx)
print_msg: {
    .label idx = 2
    .label msg = 5
    // [10] if((byte) print_msg::idx#2==(byte) 1) goto print_msg::@1 -- vbuz1_eq_vbuc1_then_la1 
    lda #1
    cmp idx
    beq b1_from_print_msg
    // [12] phi from print_msg to print_msg::@2 [phi:print_msg->print_msg::@2]
  b2_from_print_msg:
    // [12] phi (byte*) print_msg::msg#3 = (const byte*) print_msg::msg#2 [phi:print_msg->print_msg::@2#0] -- pbuz1=pbuc1 
    lda #<msg_2
    sta msg
    lda #>msg_2
    sta msg+1
    jmp b2
    // [11] phi from print_msg to print_msg::@1 [phi:print_msg->print_msg::@1]
  b1_from_print_msg:
    jmp b1
    // print_msg::@1
  b1:
    // [12] phi from print_msg::@1 to print_msg::@2 [phi:print_msg::@1->print_msg::@2]
  b2_from_b1:
    // [12] phi (byte*) print_msg::msg#3 = (const byte*) print_msg::msg#1 [phi:print_msg::@1->print_msg::@2#0] -- pbuz1=pbuc1 
    lda #<msg_1
    sta msg
    lda #>msg_1
    sta msg+1
    jmp b2
    // print_msg::@2
  b2:
    // [13] (byte*) print::msg#0 ← (byte*) print_msg::msg#3 -- pbuz1=pbuz2 
    lda msg
    sta print.msg
    lda msg+1
    sta print.msg+1
    // [14] call print 
    // [16] phi from print_msg::@2 to print [phi:print_msg::@2->print]
  print_from_b2:
    jsr print
    jmp breturn
    // print_msg::@return
  breturn:
    // [15] return 
    rts
    msg_1: .text "Hello @"
    msg_2: .text "World!@"
}
  // print
// print(byte* zeropage(7) msg)
print: {
    .label msg = 7
    // [17] phi from print print::@2 to print::@1 [phi:print/print::@2->print::@1]
  b1_from_print:
  b1_from_b2:
    // [17] phi (byte*) screen#14 = (byte*) screen#18 [phi:print/print::@2->print::@1#0] -- register_copy 
    // [17] phi (byte*) print::msg#2 = (byte*) print::msg#0 [phi:print/print::@2->print::@1#1] -- register_copy 
    jmp b1
    // print::@1
  b1:
    // [18] if(*((byte*) print::msg#2)!=(byte) '@') goto print::@2 -- _deref_pbuz1_neq_vbuc1_then_la1 
    ldy #0
    lda (msg),y
    cmp #'@'
    bne b2
    jmp breturn
    // print::@return
  breturn:
    // [19] return 
    rts
    // print::@2
  b2:
    // [20] *((byte*) screen#14) ← *((byte*) print::msg#2) -- _deref_pbuz1=_deref_pbuz2 
    ldy #0
    lda (msg),y
    ldy #0
    sta (screen),y
    // [21] (byte*) screen#6 ← ++ (byte*) screen#14 -- pbuz1=_inc_pbuz1 
    inc screen
    bne !+
    inc screen+1
  !:
    // [22] (byte*) print::msg#1 ← ++ (byte*) print::msg#2 -- pbuz1=_inc_pbuz1 
    inc msg
    bne !+
    inc msg+1
  !:
    jmp b1_from_b2
}
  // File Data

REGISTER UPLIFT POTENTIAL REGISTERS
Statement [13] (byte*) print::msg#0 ← (byte*) print_msg::msg#3 [ screen#18 print::msg#0 ] ( main:2::print_msg:5 [ screen#18 print::msg#0 ] main:2::print_msg:7 [ screen#18 print::msg#0 ] ) always clobbers reg byte a 
Statement [18] if(*((byte*) print::msg#2)!=(byte) '@') goto print::@2 [ screen#14 print::msg#2 ] ( main:2::print_msg:5::print:14 [ screen#14 print::msg#2 ] main:2::print_msg:7::print:14 [ screen#14 print::msg#2 ] ) always clobbers reg byte a reg byte y 
Statement [20] *((byte*) screen#14) ← *((byte*) print::msg#2) [ screen#14 print::msg#2 ] ( main:2::print_msg:5::print:14 [ screen#14 print::msg#2 ] main:2::print_msg:7::print:14 [ screen#14 print::msg#2 ] ) always clobbers reg byte a reg byte y 
Potential registers zp ZP_BYTE:2 [ print_msg::idx#2 ] : zp ZP_BYTE:2 , reg byte a , reg byte x , reg byte y , 
Potential registers zp ZP_WORD:3 [ screen#18 screen#14 screen#6 ] : zp ZP_WORD:3 , 
Potential registers zp ZP_WORD:5 [ print_msg::msg#3 ] : zp ZP_WORD:5 , 
Potential registers zp ZP_WORD:7 [ print::msg#2 print::msg#0 print::msg#1 ] : zp ZP_WORD:7 , 

REGISTER UPLIFT SCOPES
Uplift Scope [print] 35.5: zp ZP_WORD:7 [ print::msg#2 print::msg#0 print::msg#1 ] 
Uplift Scope [] 16.29: zp ZP_WORD:3 [ screen#18 screen#14 screen#6 ] 
Uplift Scope [print_msg] 2: zp ZP_BYTE:2 [ print_msg::idx#2 ] 2: zp ZP_WORD:5 [ print_msg::msg#3 ] 
Uplift Scope [main] 

Uplifting [print] best 740 combination zp ZP_WORD:7 [ print::msg#2 print::msg#0 print::msg#1 ] 
Uplifting [] best 740 combination zp ZP_WORD:3 [ screen#18 screen#14 screen#6 ] 
Uplifting [print_msg] best 731 combination reg byte x [ print_msg::idx#2 ] zp ZP_WORD:5 [ print_msg::msg#3 ] 
Uplifting [main] best 731 combination 
Coalescing zero page register with common assignment [ zp ZP_WORD:5 [ print_msg::msg#3 ] ] with [ zp ZP_WORD:7 [ print::msg#2 print::msg#0 print::msg#1 ] ] - score: 1
Allocated (was zp ZP_WORD:3) zp ZP_WORD:2 [ screen#18 screen#14 screen#6 ]
Allocated (was zp ZP_WORD:5) zp ZP_WORD:4 [ print_msg::msg#3 print::msg#2 print::msg#0 print::msg#1 ]

ASSEMBLER BEFORE OPTIMIZATION
  // File Comments
// Inline Strings in assignments
  // Basic Upstart
.pc = $801 "Basic"
:BasicUpstart(bbegin)
.pc = $80d "Program"
  // Global Constants & labels
  .label screen = 2
  // @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: {
    // [5] call print_msg 
    // [9] phi from main to print_msg [phi:main->print_msg]
  print_msg_from_main:
    // [9] phi (byte*) screen#18 = (byte*) 1024 [phi:main->print_msg#0] -- pbuz1=pbuc1 
    lda #<$400
    sta screen
    lda #>$400
    sta screen+1
    // [9] phi (byte) print_msg::idx#2 = (byte) 1 [phi:main->print_msg#1] -- vbuxx=vbuc1 
    ldx #1
    jsr print_msg
    // [6] phi from main to main::@1 [phi:main->main::@1]
  b1_from_main:
    jmp b1
    // main::@1
  b1:
    // [7] call print_msg 
    // [9] phi from main::@1 to print_msg [phi:main::@1->print_msg]
  print_msg_from_b1:
    // [9] phi (byte*) screen#18 = (byte*) screen#14 [phi:main::@1->print_msg#0] -- register_copy 
    // [9] phi (byte) print_msg::idx#2 = (byte) 2 [phi:main::@1->print_msg#1] -- vbuxx=vbuc1 
    ldx #2
    jsr print_msg
    jmp breturn
    // main::@return
  breturn:
    // [8] return 
    rts
}
  // print_msg
// print_msg(byte register(X) idx)
print_msg: {
    .label msg = 4
    // [10] if((byte) print_msg::idx#2==(byte) 1) goto print_msg::@1 -- vbuxx_eq_vbuc1_then_la1 
    cpx #1
    beq b1_from_print_msg
    // [12] phi from print_msg to print_msg::@2 [phi:print_msg->print_msg::@2]
  b2_from_print_msg:
    // [12] phi (byte*) print_msg::msg#3 = (const byte*) print_msg::msg#2 [phi:print_msg->print_msg::@2#0] -- pbuz1=pbuc1 
    lda #<msg_2
    sta msg
    lda #>msg_2
    sta msg+1
    jmp b2
    // [11] phi from print_msg to print_msg::@1 [phi:print_msg->print_msg::@1]
  b1_from_print_msg:
    jmp b1
    // print_msg::@1
  b1:
    // [12] phi from print_msg::@1 to print_msg::@2 [phi:print_msg::@1->print_msg::@2]
  b2_from_b1:
    // [12] phi (byte*) print_msg::msg#3 = (const byte*) print_msg::msg#1 [phi:print_msg::@1->print_msg::@2#0] -- pbuz1=pbuc1 
    lda #<msg_1
    sta msg
    lda #>msg_1
    sta msg+1
    jmp b2
    // print_msg::@2
  b2:
    // [13] (byte*) print::msg#0 ← (byte*) print_msg::msg#3
    // [14] call print 
    // [16] phi from print_msg::@2 to print [phi:print_msg::@2->print]
  print_from_b2:
    jsr print
    jmp breturn
    // print_msg::@return
  breturn:
    // [15] return 
    rts
    msg_1: .text "Hello @"
    msg_2: .text "World!@"
}
  // print
// print(byte* zeropage(4) msg)
print: {
    .label msg = 4
    // [17] phi from print print::@2 to print::@1 [phi:print/print::@2->print::@1]
  b1_from_print:
  b1_from_b2:
    // [17] phi (byte*) screen#14 = (byte*) screen#18 [phi:print/print::@2->print::@1#0] -- register_copy 
    // [17] phi (byte*) print::msg#2 = (byte*) print::msg#0 [phi:print/print::@2->print::@1#1] -- register_copy 
    jmp b1
    // print::@1
  b1:
    // [18] if(*((byte*) print::msg#2)!=(byte) '@') goto print::@2 -- _deref_pbuz1_neq_vbuc1_then_la1 
    ldy #0
    lda (msg),y
    cmp #'@'
    bne b2
    jmp breturn
    // print::@return
  breturn:
    // [19] return 
    rts
    // print::@2
  b2:
    // [20] *((byte*) screen#14) ← *((byte*) print::msg#2) -- _deref_pbuz1=_deref_pbuz2 
    ldy #0
    lda (msg),y
    ldy #0
    sta (screen),y
    // [21] (byte*) screen#6 ← ++ (byte*) screen#14 -- pbuz1=_inc_pbuz1 
    inc screen
    bne !+
    inc screen+1
  !:
    // [22] (byte*) print::msg#1 ← ++ (byte*) print::msg#2 -- pbuz1=_inc_pbuz1 
    inc msg
    bne !+
    inc msg+1
  !:
    jmp b1_from_b2
}
  // File Data

ASSEMBLER OPTIMIZATIONS
Removing instruction jmp b1
Removing instruction jmp bend
Removing instruction jmp b1
Removing instruction jmp breturn
Removing instruction jmp b1
Removing instruction jmp b2
Removing instruction jmp breturn
Removing instruction jmp b1
Removing instruction jmp breturn
Succesful ASM optimization Pass5NextJumpElimination
Removing instruction ldy #0
Succesful ASM optimization Pass5UnnecesaryLoadElimination
Replacing label b1_from_print_msg with b1
Replacing label b1_from_b2 with b1
Removing instruction b1_from_bbegin:
Removing instruction b1:
Removing instruction main_from_b1:
Removing instruction bend_from_b1:
Removing instruction b1_from_main:
Removing instruction print_msg_from_b1:
Removing instruction b1_from_print_msg:
Removing instruction b2_from_b1:
Removing instruction print_from_b2:
Removing instruction b1_from_print:
Removing instruction b1_from_b2:
Succesful ASM optimization Pass5RedundantLabelElimination
Removing instruction bend:
Removing instruction print_msg_from_main:
Removing instruction b1:
Removing instruction breturn:
Removing instruction b2_from_print_msg:
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 bbegin:
Succesful ASM optimization Pass5UnusedLabelElimination

FINAL SYMBOL TABLE
(label) @1
(label) @begin
(label) @end
(void()) main()
(label) main::@1
(label) main::@return
(void()) print((byte*) print::msg)
(label) print::@1
(label) print::@2
(label) print::@return
(byte*) print::msg
(byte*) print::msg#0 msg zp ZP_WORD:4 2.0
(byte*) print::msg#1 msg zp ZP_WORD:4 22.0
(byte*) print::msg#2 msg zp ZP_WORD:4 11.5
(void()) print_msg((byte) print_msg::idx)
(label) print_msg::@1
(label) print_msg::@2
(label) print_msg::@return
(byte) print_msg::idx
(byte) print_msg::idx#2 reg byte x 2.0
(byte*) print_msg::msg
(const byte*) print_msg::msg#1 msg#1 = (string) "Hello @"
(const byte*) print_msg::msg#2 msg#2 = (string) "World!@"
(byte*) print_msg::msg#3 msg zp ZP_WORD:4 2.0
(byte*) screen
(byte*) screen#14 screen zp ZP_WORD:2 4.625
(byte*) screen#18 screen zp ZP_WORD:2 0.6666666666666666
(byte*) screen#6 screen zp ZP_WORD:2 11.0

reg byte x [ print_msg::idx#2 ]
zp ZP_WORD:2 [ screen#18 screen#14 screen#6 ]
zp ZP_WORD:4 [ print_msg::msg#3 print::msg#2 print::msg#0 print::msg#1 ]


FINAL ASSEMBLER
Score: 612

  // File Comments
// Inline Strings in assignments
  // Basic Upstart
.pc = $801 "Basic"
:BasicUpstart(main)
.pc = $80d "Program"
  // Global Constants & labels
  .label screen = 2
  // @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: {
    // print_msg(1)
    // [5] call print_msg 
    // [9] phi from main to print_msg [phi:main->print_msg]
    // [9] phi (byte*) screen#18 = (byte*) 1024 [phi:main->print_msg#0] -- pbuz1=pbuc1 
    lda #<$400
    sta screen
    lda #>$400
    sta screen+1
    // [9] phi (byte) print_msg::idx#2 = (byte) 1 [phi:main->print_msg#1] -- vbuxx=vbuc1 
    ldx #1
    jsr print_msg
    // [6] phi from main to main::@1 [phi:main->main::@1]
    // main::@1
    // print_msg(2)
    // [7] call print_msg 
    // [9] phi from main::@1 to print_msg [phi:main::@1->print_msg]
    // [9] phi (byte*) screen#18 = (byte*) screen#14 [phi:main::@1->print_msg#0] -- register_copy 
    // [9] phi (byte) print_msg::idx#2 = (byte) 2 [phi:main::@1->print_msg#1] -- vbuxx=vbuc1 
    ldx #2
    jsr print_msg
    // main::@return
    // }
    // [8] return 
    rts
}
  // print_msg
// print_msg(byte register(X) idx)
print_msg: {
    .label msg = 4
    // if(idx==1)
    // [10] if((byte) print_msg::idx#2==(byte) 1) goto print_msg::@1 -- vbuxx_eq_vbuc1_then_la1 
    cpx #1
    beq b1
    // [12] phi from print_msg to print_msg::@2 [phi:print_msg->print_msg::@2]
    // [12] phi (byte*) print_msg::msg#3 = (const byte*) print_msg::msg#2 [phi:print_msg->print_msg::@2#0] -- pbuz1=pbuc1 
    lda #<msg_2
    sta msg
    lda #>msg_2
    sta msg+1
    jmp b2
    // [11] phi from print_msg to print_msg::@1 [phi:print_msg->print_msg::@1]
    // print_msg::@1
  b1:
    // [12] phi from print_msg::@1 to print_msg::@2 [phi:print_msg::@1->print_msg::@2]
    // [12] phi (byte*) print_msg::msg#3 = (const byte*) print_msg::msg#1 [phi:print_msg::@1->print_msg::@2#0] -- pbuz1=pbuc1 
    lda #<msg_1
    sta msg
    lda #>msg_1
    sta msg+1
    // print_msg::@2
  b2:
    // print(msg)
    // [13] (byte*) print::msg#0 ← (byte*) print_msg::msg#3
    // [14] call print 
    // [16] phi from print_msg::@2 to print [phi:print_msg::@2->print]
    jsr print
    // print_msg::@return
    // }
    // [15] return 
    rts
    msg_1: .text "Hello @"
    msg_2: .text "World!@"
}
  // print
// print(byte* zeropage(4) msg)
print: {
    .label msg = 4
    // [17] phi from print print::@2 to print::@1 [phi:print/print::@2->print::@1]
    // [17] phi (byte*) screen#14 = (byte*) screen#18 [phi:print/print::@2->print::@1#0] -- register_copy 
    // [17] phi (byte*) print::msg#2 = (byte*) print::msg#0 [phi:print/print::@2->print::@1#1] -- register_copy 
    // print::@1
  b1:
    // while(*msg!='@')
    // [18] if(*((byte*) print::msg#2)!=(byte) '@') goto print::@2 -- _deref_pbuz1_neq_vbuc1_then_la1 
    ldy #0
    lda (msg),y
    cmp #'@'
    bne b2
    // print::@return
    // }
    // [19] return 
    rts
    // print::@2
  b2:
    // *(screen++) = *(msg++)
    // [20] *((byte*) screen#14) ← *((byte*) print::msg#2) -- _deref_pbuz1=_deref_pbuz2 
    ldy #0
    lda (msg),y
    sta (screen),y
    // *(screen++) = *(msg++);
    // [21] (byte*) screen#6 ← ++ (byte*) screen#14 -- pbuz1=_inc_pbuz1 
    inc screen
    bne !+
    inc screen+1
  !:
    // [22] (byte*) print::msg#1 ← ++ (byte*) print::msg#2 -- pbuz1=_inc_pbuz1 
    inc msg
    bne !+
    inc msg+1
  !:
    jmp b1
}
  // File Data

